ONE GROUP INVESTMENT TRUST
497, 2000-05-01
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<PAGE>   1
ONE GROUP(R) INVESTMENT TRUST
                  PROSPECTUS
                  MAY 1, 2000


                  One Group(R) Investment Trust Bond Portfolio
                  One Group(R) Investment Trust Government Bond Portfolio
                  One Group(R) Investment Trust Balanced Portfolio
                  One Group(R) Investment Trust Large Cap Growth Portfolio
                  One Group(R) Investment Trust Equity Index Portfolio
                  One Group(R) Investment Trust Diversified Equity Portfolio
                  One Group(R) Investment Trust Mid Cap Growth Portfolio
                  One Group(R) Investment Trust Diversified Mid Cap Portfolio
                  One Group(R) Investment Trust Mid Cap Value Portfolio




THE SECURITIES AND EXCHANGE COMMISSION HAS NOT APPROVED OR DISAPPROVED THE
SHARES OF ANY OF THE PORTFOLIOS AS AN INVESTMENT OR DETERMINED WHETHER THIS
PROSPECTUS IS ACCURATE OR COMPLETE. ANYONE WHO TELLS YOU OTHERWISE IS COMMITTING
A CRIME.
<PAGE>   2

       TABLE OF
            CONTENTS

<TABLE>
<C>                                                           <S>
             FUND SUMMARIES: INVESTMENTS, RISK & PERFORMANCE
                   One Group Investment Trust Bond Portfolio  2
                                                              ---------
        One Group Investment Trust Government Bond Portfolio  5
                                                              ---------
               One Group Investment Trust Balanced Portfolio  8
                                                              ---------
       One Group Investment Trust Large Cap Growth Portfolio  11
                                                              ---------
           One Group Investment Trust Equity Index Portfolio  13
                                                              ---------
     One Group Investment Trust Diversified Equity Portfolio  15
                                                              ---------
         One Group Investment Trust Mid Cap Growth Portfolio  17
                                                              ---------
    One Group Investment Trust Diversified Mid Cap Portfolio  19
                                                              ---------
          One Group Investment Trust Mid Cap Value Portfolio  21
                                                              ---------
</TABLE>

<TABLE>
<C>                                                           <S>
                                   MORE ABOUT THE PORTFOLIOS
                             Principal Investment Strategies  23
                                                              ---------
                                         Types of Portfolios  23
                                                              ---------
                                  One Group Investment Trust  23
                                                              ---------
                                            Investment Risks  27
                                                              ---------
                                         Investment Policies  28
                                                              ---------
                               Temporary Defensive Positions  29
                                                              ---------
                                          Portfolio Turnover  30
                                                              ---------
</TABLE>

<TABLE>
<C>                                                           <S>
                                     SHAREHOLDER INFORMATION
                                    Pricing Portfolio Shares  30
                                                              ---------
                                 Purchasing Portfolio Shares  31
                                                              ---------
                                         Voting and Meetings  31
                                                              ---------
                                  Redeeming Portfolio Shares  31
                                                              ---------
                                                   Dividends  32
                                                              ---------
                                                   Questions  32
                                                              ---------
                                             Tax Information  32
                                                              ---------
                                             Qualified Plans  32
                                                              ---------
</TABLE>

<TABLE>
<C>                                                           <S>
                    MANAGEMENT OF ONE GROUP INVESTMENT TRUST
                                                 The Advisor  33
                                                              ---------
                                      The Portfolio Managers  34
                                                              ---------
</TABLE>

<TABLE>
<C>                                                           <S>
                                        FINANCIAL HIGHLIGHTS  35
                                                              ---------
                            APPENDIX A: INVESTMENT PRACTICES  44
                                                              ---------
</TABLE>
<PAGE>   3

                                  FUND SUMMARIES
                                  Investments, Risk & Performance
<PAGE>   4

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

2

                        FUND SUMMARY: INVESTMENTS, RISK & PERFORMANCE

                        Bond Portfolio

WHAT IS THE GOAL OF THE
  BOND PORTFOLIO?       The Portfolio seeks to maximize total return by
                        investing primarily in a diversified portfolio of
                        intermediate and long-term debt securities.

WHAT ARE THE BOND
  PORTFOLIO'S MAIN
  INVESTMENT STRATEGIES?The Portfolio invests mainly in investment grade bonds
                        and debt securities. These include mortgage-backed and
                        asset-backed securities. Banc One Investment Advisors
                        analyzes four major factors in managing and constructing
                        the Portfolio: duration, market sector, maturity
                        concentrations, and individual securities. Banc One
                        Investment Advisors selects individual securities that
                        it believes will perform well over time. Banc One
                        Investment Advisors is value oriented and selects
                        individual securities after performing a risk/reward
                        analysis that includes an evaluation of interest rate
                        risk, credit risk, and structural risk. For more
                        information about the Bond Portfolio's investment
                        strategies, please read "More About the Portfolios" and
                        "Principal Investment Strategies."

WHAT IS A "BOND"?       A "bond" is a debt security with a remaining maturity of
                        ninety days or more issued by the U.S. Government or its
                        agencies and instrumentalities, a corporation, or a
                        municipality, securities issued or guaranteed by a
                        foreign government or its agencies and
                        instrumentalities, securities issued or guaranteed by
                        domestic and supranational banks, mortgage-related and
                        mortgage-backed securities, asset-backed securities,
                        stripped government securities, and zero coupon
                        obligations.

WHAT ARE THE MAIN RISKS
  OF INVESTING IN THE
  BOND
  PORTFOLIO?            The main risks of investing in the Bond Portfolio and
                        the circumstances likely to adversely affect your
                        investment are described below. The share price of the
                        Bond Portfolio and its yield will change every day in
                        response to interest rates and other market conditions.
                        You may lose money if you invest in the Bond Portfolio.
                        For additional information on risk, please read
                        "Investment Risks."

                MAIN RISKS
- --------------------------
                        Interest Rate Risk. The Portfolio mainly invests in
                        bonds and other debt securities. These securities will
                        increase or decrease in value based on changes in
                        interest rates. If rates increase, the value of the
                        Portfolio's investments generally declines. On the other
                        hand, if rates fall, the value of the investments
                        generally increases. Your investment will decline in
                        value if the value of the Portfolio's investments
                        decreases. Securities with greater interest rate
                        sensitivity and longer maturities tend to produce higher
                        yields, but are subject to greater fluctuations in
                        value. Usually, changes in the value of fixed income
                        securities will not affect cash income generated, but
                        may affect the value of your investment.
<PAGE>   5

- ---------------------------

                           Bond Portfolio

                                                                               3

                        Credit Risk. There is a risk that issuers and
                        counterparties will not make payments on securities and
                        repurchase agreements held by the Portfolio. Such
                        default could result in losses to the Portfolio. In
                        addition, the credit quality of securities held by the
                        Portfolio may be lowered if an issuer's financial
                        condition changes. Lower credit quality may lead to
                        greater volatility in the price of a security and in
                        shares of a Portfolio. Lower credit quality also may
                        affect a security's liquidity and make it difficult for
                        the Portfolio to sell the security.

                        Prepayment and Call Risk. As part of its main investment
                        strategy, the Portfolio invests in mortgage-backed and
                        asset-backed securities. The issuers of these securities
                        and other callable securities may be able to repay
                        principal in advance, especially when interest rates
                        fall. Changes in prepayment rates affect the return on
                        investment and yield of mortgage and asset-backed
                        securities. When mortgage and other obligations are
                        prepaid and when securities are called, the Portfolio
                        may have to reinvest in securities with a lower yield.
                        The Portfolio also may fail to recover additional
                        amounts paid (i.e., premiums) for securities with higher
                        interest rates, resulting in an unexpected capital loss.

                        Derivative Risk. The Portfolio invests in securities
                        that may be considered to be DERIVATIVES (e.g., certain
                        types of mortgage-backed securities, CMOs, IOs, POs, and
                        inverse floaters). The value of derivative securities is
                        dependent upon the performance of underlying assets or
                        securities. If the underlying assets do not perform as
                        expected, the value of the derivative security and your
                        investment in the Portfolio declines. Derivatives
                        generally are more volatile and are riskier in terms of
                        both liquidity and value than traditional investments.

                        Not FDIC insured. An investment in the Portfolio is not
                        a deposit of Bank One Corporation or any of its
                        affiliates and is not insured or guaranteed by the
                        Federal Deposit Insurance Corporation or any other
                        government agency.
<PAGE>   6
4

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

                           Bond Portfolio

HOW HAS THE BOND
  PORTFOLIO PERFORMED?  By showing the variability of the Bond Portfolio's
                        performance from year to year, the chart and table below
                        help show the risk of investing in the Portfolio. The
                        chart and table reflect that the Bond Portfolio became
                        the accounting successor to the financial history of the
                        Pegasus Variable Bond Fund on March 31, 1999. The
                        returns in the bar chart and table below DO NOT reflect
                        insurance separate account charges. If these charges
                        were included, the returns would be lower than shown.
                        PLEASE REMEMBER THAT THE PAST PERFORMANCE OF THE BOND
                        PORTFOLIO IS NOT NECESSARILY AN INDICATION OF HOW THE
                        PORTFOLIO WILL PERFORM IN THE FUTURE.

The Bar Chart shows changes in the Portfolio's performance from year to year.
Total returns assume reinvestment of dividends and distributions.

                         BAR CHART (per calendar year)
- --------------------------------------------------------------------------------

<TABLE>
<S>                                                           <C>
1998                                                                             8.66%
1999                                                                            -1.50%
</TABLE>

- --------------------------------------------------------------------------------
Best Quarter:  4.78%  3Q1998       Worst Quarter:  -0.97%  1Q1999
- --------------------------------------------------------------------------------

The Average Annual Total Return Table shows how the Portfolio's average annual
returns for the periods indicated compare to those of a broad measure of market
performance. Average annual total returns for more than one year tend to smooth
out variations in the Portfolio's total returns and are not the same as actual
year-by-year results.

                        AVERAGE ANNUAL TOTAL RETURNS through December 31, 1999
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                1 YEAR     LIFE OF FUND
                                                          (since 5/1/97)
   <S>                                          <C>       <C>
   One Group Investment Trust Bond
     Portfolio                                  -1.50%         5.67%
   ----------------------------------------------------------------------
   Lehman Brothers Aggregate Bond Index(1)      -0.83%         6.51%
</TABLE>

                        (1) The Lehman Brothers Aggregate Bond Index is an
                            unmanaged index generally representative of the
                            bond market as a whole. The performance of the
                            index does not reflect the deduction of expenses
                            associated with a mutual fund, such as investment
                            management fees. By contrast, the performance of
                            the Portfolio reflects the deduction of these
                            expenses.
<PAGE>   7

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

                                                                               5

                        FUND SUMMARY: INVESTMENTS, RISK & PERFORMANCE

                        Government Bond Portfolio

WHAT IS THE GOAL OF THE
  GOVERNMENT BOND
  PORTFOLIO?            The Portfolio seeks a high level of current income with
                        liquidity and safety of principal.

WHAT ARE THE GOVERNMENT
  BOND PORTFOLIO'S MAIN
  INVESTMENT STRATEGIES?The Portfolio limits its investments to securities
                        issued by the U.S. Government and its agencies and
                        instrumentalities (i.e., government bonds) or related to
                        securities issued by the U.S. Government and its
                        agencies and instrumentalities. The Portfolio mainly
                        invests in government bonds with intermediate to long
                        remaining maturities including mortgage-backed
                        securities. Banc One Investment Advisors is value
                        oriented and looks for individual securities that it
                        believes will perform well over market cycles. The
                        Government Bond Portfolio spreads its holdings across
                        various security types within the Government market
                        sector (e.g., treasuries, U.S. Government agency
                        securities, and agency mortgage-backed securities). Banc
                        One Investment Advisors selects individual securities
                        after performing a risk/reward analysis that includes an
                        evaluation of interest rate risk, credit risk, and
                        structural risk. For more information about the
                        Government Bond Portfolio's investment strategies,
                        please read "More About the Portfolios" and "Principal
                        Investment Strategies."

WHAT IS A "GOVERNMENT
  BOND"?                A "government bond" is a debt instrument issued or
                        guaranteed by the U.S. Government or its agencies and
                        instrumentalities. Government bonds may include stripped
                        government securities and mortgage-related and
                        mortgage-backed securities. Certain agency securities
                        purchased by the Portfolio may be guaranteed only by the
                        credit of the issuer and not by the full faith and
                        credit of the U.S. Government.

WHAT ARE THE MAIN RISKS
  OF INVESTING IN THE
  GOVERNMENT BOND
  PORTFOLIO?            The main risks of investing in the Government Bond
                        Portfolio and the circumstances likely to adversely
                        affect your investment are described below. The share
                        price of the Government Bond Portfolio and its yield
                        will change every day in response to interest rates and
                        other market conditions. You may lose money if you
                        invest in the Government Bond Portfolio. For additional
                        information on risk, please read "Investment Risks."

               MAIN RISKS
- --------------------------
                        Interest Rate Risk. The Portfolio mainly invests in
                        bonds and other debt securities. These securities will
                        increase or decrease in value based on changes in
                        interest rates. If rates increase, the value of the
                        Portfolio's investments generally declines. On the other
                        hand, if rates fall, the value of the investments
                        generally increases. Your investment will decline in
                        value if the value of the Portfolio's investments
                        decreases. Securities with greater interest rate
                        sensitivity and longer maturities tend to produce higher
                        yields, but are subject to greater fluctuations in
                        value. Usually, changes in the value of fixed income
                        securities will not affect cash income generated, but
                        may affect the value of your investment.
<PAGE>   8

- ---------------------------

                           Government Bond Portfolio

6

                        Prepayment and Call Risk. As part of its main investment
                        strategy, the Portfolio invests in mortgage-backed and
                        asset-backed securities. The issuers of these securities
                        and other callable securities may be able to repay
                        principal in advance, especially when interest rates
                        fall. Changes in prepayment rates affect the return on
                        investment and yield of mortgage and asset-backed
                        securities. When mortgage and other obligations are
                        prepaid and when securities are called, the Portfolio
                        may have to reinvest in securities with a lower yield.
                        The Portfolio also may fail to recover additional
                        amounts (i.e., premiums) paid for securities with higher
                        interest rates, resulting in an unexpected capital loss.

                        Derivative Risk. The Portfolio invests in securities
                        that may be considered to be DERIVATIVES. The value of
                        derivative securities is dependent upon the performance
                        of underlying assets or securities. If the underlying
                        assets do not perform as expected, the value of the
                        derivative security and your investment in the Portfolio
                        declines. Derivatives generally are more volatile and
                        are riskier in terms of both liquidity and value than
                        traditional investments.

                        Not FDIC insured. An investment in the Portfolio is not
                        a deposit of Bank One Corporation or any of its
                        affiliates and is not insured or guaranteed by the
                        Federal Deposit Insurance Corporation or any other
                        government agency.
<PAGE>   9
                                                                               7

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

                           Government Bond Portfolio

HOW HAS THE GOVERNMENT
  BOND PORTFOLIO
  PERFORMED?            By showing the variability of the Government Bond
                        Portfolio's performance from year to year, the chart and
                        table below help show the risk of investing in the
                        Portfolio. The returns in the bar chart and table below
                        DO NOT reflect insurance separate account charges. If
                        these charges were included, the returns would be lower
                        than shown. PLEASE REMEMBER THAT THE PAST PERFORMANCE OF
                        THE GOVERNMENT BOND PORTFOLIO IS NOT NECESSARILY AN
                        INDICATION OF HOW THE PORTFOLIO WILL PERFORM IN THE
                        FUTURE.

The Bar Chart shows changes in the Portfolio's performance from year to year.
Total returns assume reinvestment of dividends and distributions.

                        BAR CHART (per calendar year)
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>

<S>                                                           <C>
1995                                                          16.69%
1996                                                           2.69%
1997                                                           9.67%
1998                                                           7.32%
1999                                                          -1.31%
</TABLE>

- --------------------------------------------------------------------------------
Best Quarter:  5.00%  2Q1995       Worst Quarter:  -2.05%  1Q1996
- --------------------------------------------------------------------------------

The Average Annual Total Return Table shows how the Portfolio's average annual
returns for the periods indicated compare to those of a broad measure of market
performance. Average annual total returns for more than one year tend to smooth
out variations in the Portfolio's total returns and are not the same as actual
year-by-year results.

                        AVERAGE ANNUAL TOTAL RETURNS through December 31, 1999
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                          1 YEAR       5 YEARS      LIFE OF FUND
                                                                                   (since 8/1/94)
   <S>                                                    <C>          <C>        <C>
   One Group Investment Trust Government Bond
     Portfolio                                            -1.31%        6.84%          6.12%
   -----------------------------------------------------------------------------------------------
   Lehman Brothers Government Bond Index (1)              -0.43%        7.27%          6.46%
   -----------------------------------------------------------------------------------------------
   Salomon Brothers 3-7 Year Treasury Index (2)           -2.25%        7.43%          6.85%
</TABLE>

                        (1) The Lehman Brothers Government Bond Index is an
                            unmanaged market weighted index that encompasses
                            U.S. Treasury and agency securities with
                            maturities between 5 and 10 years. The
                            performance of the index does not reflect the
                            deduction of expenses associated with a mutual
                            fund, such as investment management fees. By
                            contrast, the performance of the Portfolio
                            reflects the deduction of these expenses. The
                            benchmark index for the Government Bond Portfolio
                            has been changed from the Salomon Brothers 3-7
                            Year Treasury Index to the Lehman Brothers
                            Government Bond Index in order to better
                            represent the investment policies of the
                            Portfolio for comparison purposes.

                        (2) The Salomon Brothers 3 to 7 Year Treasury Index
                            is an unmanaged index comprised of U.S.
                            Government agency and Treasury securities and
                            agency mortgage-backed securities. The
                            performance of the index does not reflect the
                            deduction of expenses associated with a mutual
                            fund, such as investment management fees. By
                            contrast, the performance of the Portfolio
                            reflects the deduction of these expenses.
<PAGE>   10

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

8

                        FUND SUMMARY: INVESTMENTS, RISK & PERFORMANCE

                        Balanced Portfolio

WHAT IS THE GOAL OF THE
  BALANCED PORTFOLIO?   The Portfolio seeks to provide total return while
                        preserving capital.

WHAT ARE THE BALANCED
  PORTFOLIO'S MAIN
  INVESTMENT STRATEGIES?The Portfolio invests in a combination of stocks
                        (including both growth and value securities), fixed
                        income securities and money market instruments. Banc One
                        Investment Advisors will regularly review the
                        Portfolio's asset allocations and vary them over time to
                        favor investments that it believes will provide the most
                        favorable total return. In making asset allocation
                        decisions, Banc One Investment Advisors will evaluate
                        projections of risk, market and economic conditions,
                        volatility, yields and expected returns. Because the
                        Portfolio seeks total return over the long term, Banc
                        One Investment Advisors will not attempt to time the
                        market. Rather, asset allocation shifts will be made
                        gradually over time. For more information about the
                        Balanced Portfolio's investment strategies, please read
                        "More About the Portfolios" and "Principal Investment
                        Strategies."

WHAT ARE THE MAIN RISKS
  OF INVESTING IN THE
  BALANCED PORTFOLIO?   The main risks of investing in the Balanced Portfolio
                        and the circumstances likely to adversely affect your
                        investment are described below. The share price of the
                        Balanced Portfolio and its yield will change every day
                        in response to interest rates and other market
                        conditions. You may lose money if you invest in the
                        Balanced Portfolio. For additional information on risk,
                        please read "Investment Risks."

MAIN RISKS
- --------------------------
                        Market Risk. The Portfolio invests in equity securities
                        (such as stocks) which are more volatile and carry more
                        risks than some other forms of investment. The price of
                        equity securities may rise or fall because of economic
                        or political changes or changes in a company's financial
                        condition. Equity securities are also subject to "stock
                        market risk" meaning that stock prices in general may
                        decline over short or extended periods of time. When the
                        value of the Portfolio's securities goes down, your
                        investment in the Portfolio decreases in value.

                        Interest Rate Risk. In connection with the Portfolio's
                        fixed income strategy, the Portfolio invests in bonds
                        and other debt securities. These securities will
                        increase or decrease in value based on changes in
                        interest rates. If rates increase, the value of the
                        Portfolio's investments generally declines. On the other
                        hand, if rates fall, the value of the investments
                        generally increases. Your investment will decline in
                        value if the value of the Portfolio's investments
                        decrease. Securities with greater interest rate
                        sensitivity and longer maturities tend to produce higher
                        yields, but are subject to greater fluctuations in
                        value. Usually, changes in the value of fixed income
                        securities will not affect cash income generated, but
                        may affect the value of your investment.
<PAGE>   11

- ---------------------------

                           Balanced Portfolio

                                                                               9

                        Credit Risk. There is a risk that issuers and
                        counterparties will not make payments on securities and
                        repurchase agreements held by the Portfolio. Such
                        default could result in losses to the Portfolio. In
                        addition, the credit quality of securities held by the
                        Portfolio may be lowered if an issuer's financial
                        condition changes. Lower credit quality may lead to
                        greater volatility in the price of a security and in
                        shares of a Portfolio. Lower credit quality also may
                        affect a security's liquidity and make it difficult for
                        the Portfolio to sell the security.

                        Derivative Risk. The Portfolio invests in securities
                        that may be considered to be DERIVATIVES. The value of
                        derivative securities is dependent upon the performance
                        of underlying assets or securities. If the underlying
                        assets do not perform as expected, the value of the
                        derivative security and your investment in the Portfolio
                        declines. Derivatives may be more volatile and are
                        riskier in terms of both liquidity and value than
                        traditional investments.

                        Prepayment and Call Risk. As part of its fixed income
                        strategy, the Portfolio invests in mortgage-backed and
                        asset-backed securities. The issuers of mortgage-backed
                        and asset-backed securities held by the Portfolio may be
                        able to repay principal in advance, especially when
                        interest rates fall. Changes in prepayment rates can
                        affect the return on investment and yield of mortgage
                        and asset-backed securities. When mortgage and other
                        obligations are prepaid and when securities are called,
                        the Portfolio may have to reinvest in securities with a
                        lower yield. The Portfolio may also fail to recover
                        additional amounts (i.e. premiums) paid for securities
                        with higher interest rates, resulting in an unexpected
                        capital loss.

                        Not FDIC insured. An investment in the Portfolio is not
                        a deposit of Bank One Corporation or any of its
                        affiliates and is not insured or guaranteed by the
                        Federal Deposit Insurance Corporation or any other
                        government agency.
<PAGE>   12
                                                                              10

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

                           Balanced Portfolio

HOW HAS THE BALANCED
  PORTFOLIO PERFORMED?  By showing the variability of the Balanced Portfolio's
                        performance from year to year, the chart and table below
                        help show the risk of investing in the Portfolio. The
                        returns in the bar chart and table below DO NOT reflect
                        insurance separate account charges. If these charges
                        were included, the returns would be lower than shown.
                        PLEASE REMEMBER THAT THE PAST PERFORMANCE OF THE
                        BALANCED PORTFOLIO IS NOT NECESSARILY AN INDICATION OF
                        HOW THE PORTFOLIO WILL PERFORM IN THE FUTURE.

The Bar Chart shows changes in the Portfolio's performance from year to year.
Total returns assume reinvestment of dividends and distributions.

                        BAR CHART (per calendar year)
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>

<S>                                                           <C>
1995                                                          20.69%
1996                                                          11.92%
1997                                                          22.90%
1998                                                          19.09%
1999                                                           8.20%
</TABLE>

- --------------------------------------------------------------------------------
Best Quarter:  11.84%  2Q1997       Worst Quarter:  -3.63%  3Q1998
- --------------------------------------------------------------------------------

The Average Annual Total Return Table shows how the Portfolio's average annual
returns for the periods indicated compare to those of a broad measure of market
performance. Average annual total returns for more than one year tend to smooth
out variations in the Portfolio's total returns and are not the same as actual
year-by-year results.

                        AVERAGE ANNUAL TOTAL RETURNS through December 31,
                        1999(1)
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                1 YEAR       5 YEARS     LIFE OF FUND
                                                                        (since 8/1/94)
   <S>                                          <C>          <C>        <C>
   One Group Investment Trust Balanced
     Portfolio                                  8.20%        16.43%         14.79%
   ------------------------------------------------------------------------------------
   S&P 500 Index(2)                             21.04%       28.56%         27.39%
   ------------------------------------------------------------------------------------
   Lehman Brothers Intermediate
     Government/Corporate Bond Index(3)         0.39%         7.09%          6.59%
   ------------------------------------------------------------------------------------
   Lipper Balanced Funds Index(4)               5.64%        14.32%         13.44%
</TABLE>

                        (1) The table above compares the average annual
                            return of the Portfolio, which holds a mix of
                            stocks, bonds and other debt securities to an
                            unmanaged, broad-based index (i.e., the S&P 500
                            Index) as well as supplemental indices for the
                            periods indicated.

                        (2) The S&P 500 Index is an unmanaged index generally
                            representative of the performance of large
                            companies in the U.S. stock market. The
                            performance of the index does not reflect the
                            deduction of expenses associated with a mutual
                            fund, such as investment management fees. By
                            contrast, the performance of the Portfolio
                            reflects the deduction of these expenses.

                        (3) The Lehman Brothers Intermediate
                            Government/Corporate Bond Index is an unmanaged
                            market weighted index which encompasses U.S.
                            Treasury and agency securities and investment
                            grade corporate and international
                            (dollar-denominated) bonds, with maturities
                            between 5 and 10 years. The performance of the
                            index does not reflect the deduction of expenses
                            associated with a mutual fund, such as investment
                            management fees. By contrast, the performance of
                            the Portfolio reflects the deduction of these
                            expenses.

                        (4) The Lipper Balanced Funds Index is an index of
                            funds whose primary objective is to conserve
                            principal by maintaining at all times a balanced
                            portfolio of both stocks and bonds. Unlike the
                            indices shown above, the performance of the index
                            reflects the deduction of expenses associated
                            with mutual funds, such as investment management
                            fees. These expenses are not identical to the
                            expenses charged by the Portfolio.
<PAGE>   13

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

                                                                              11

                        FUND SUMMARY: INVESTMENTS, RISK & PERFORMANCE

                        Large Cap Growth
                        Portfolio

WHAT IS THE GOAL OF THE
  LARGE CAP GROWTH
  PORTFOLIO?            The Portfolio seeks long-term capital appreciation and
                        growth of income by investing primarily in equity
                        securities.

WHAT ARE THE LARGE CAP
  GROWTH PORTFOLIO'S MAIN
  INVESTMENT STRATEGIES?The Portfolio invests mainly in equity securities of
                        large, well-established companies. The weighted average
                        capitalization of companies in which the Portfolio
                        invests normally will exceed the market median
                        capitalization of the Standard & Poor's 500 Composite
                        Stock Price Index ("S&P 500 Index").(1) For more
                        information about the Large Cap Growth Portfolio's
                        investment strategies, please read "More About the
                        Portfolios" and "Principal Investment Strategies."

WHAT ARE THE MAIN RISKS
  OF INVESTING IN THE
  LARGE CAP GROWTH
  PORTFOLIO?            The main risks of investing in the Large Cap Growth
                        Portfolio and the circumstances likely to adversely
                        affect your investment are described below. The share
                        price of the Large Cap Growth Portfolio will change
                        every day in response to market conditions. You may lose
                        money if you invest in the Large Cap Growth Portfolio.
                        For additional information on risk, please read
                        "Investment Risks."

MAIN RISKS
- --------------------------
                        Market Risk. The Portfolio invests in equity securities
                        (such as stocks) that are more volatile and carry more
                        risks than some other forms of investment. The price of
                        equity securities may rise or fall because of economic
                        or political changes or changes in a company's financial
                        condition. Equity securities are also subject to "stock
                        market risk" meaning that stock prices in general (or
                        large cap growth stock prices in particular) may decline
                        over short or extended periods of time. When the value
                        of the Portfolio's securities goes down, your investment
                        in the Portfolio decreases in value.

                        Not FDIC insured. An investment in the Portfolio is not
                        a deposit of Bank One Corporation or any of its
                        affiliates and is not insured or guaranteed by the
                        Federal Deposit Insurance Corporation or any other
                        government agency.

                        (1) "S&P 500" is a registered service mark of
                            Standard & Poor's Corporation, which does not
                            sponsor and is in no way affiliated with One
                            Group Investment Trust.
<PAGE>   14
12

- ---------------------------

                           Large Cap Growth Portfolio

HOW HAS THE LARGE CAP
  GROWTH PORTFOLIO
  PERFORMED?            By showing the variability of the Large Cap Growth
                        Portfolio's performance from year to year, the chart and
                        table below help show the risk of investing in the
                        Portfolio. The returns in the bar chart and table below
                        DO NOT reflect insurance separate account charges. If
                        these charges were included, the returns would be lower
                        than shown. PLEASE REMEMBER THAT THE PAST PERFORMANCE OF
                        THE LARGE CAP GROWTH PORTFOLIO IS NOT NECESSARILY AN
                        INDICATION OF HOW THE PORTFOLIO WILL PERFORM IN THE
                        FUTURE.

The Bar Chart shows changes in the Portfolio's performance from year to year.
Total returns assume reinvestment of dividends and distributions.

                        BAR CHART (per calendar year)
- --------------------------------------------------------------------------------

<TABLE>
<S>                                                           <C>
1995                                                                             24.13%
1996                                                                             16.67%
1997                                                                             31.93%
1998                                                                             41.27%
1999                                                                             29.26%
</TABLE>

- --------------------------------------------------------------------------------
Best Quarter:  23.96%  4Q1998        Worst Quarter:  -6.79%  3Q1998
- --------------------------------------------------------------------------------

The Average Annual Total Return Table shows how the Portfolio's average annual
returns for the periods indicated compare to those of a broad measure of market
performance. Average annual total returns for more than one year tend to smooth
out variations in the Portfolio's total returns and are not the same as actual
year-by-year results.

                        AVERAGE ANNUAL TOTAL RETURNS through December 31, 1999
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                  1 YEAR       5 YEARS      LIFE OF FUND
                                                                           (since 8/1/94)
   <S>                                            <C>          <C>        <C>
   One Group Investment Trust Large Cap
     Growth Portfolio                             29.26%       28.39%          26.07%
   ---------------------------------------------------------------------------------------
   Russell 1000 Index (1)                         33.16%       32.42%          30.74%
   ---------------------------------------------------------------------------------------
   S&P 500/BARRA Growth Index (2)                 28.25%       33.64%          32.91%
</TABLE>

                        (1) The Russell 1000 Index is an unmanaged index
                            representing the performance of those Russell
                            1000 companies with higher price-to-book ratios
                            and higher forecasted growth values. The
                            performance of the index does not reflect the
                            deduction of expenses associated with a mutual
                            fund, such as investment management fees. By
                            contrast, the performance of the Portfolio
                            reflects the deduction of these expenses. The
                            benchmark index for the Large Cap Growth
                            Portfolio has been changed from the S&P 500/BARRA
                            Growth Index to the Russell 1000 index in order
                            to better represent the investment policies of
                            the Portfolio for comparison purposes.

                        (2) The S&P 500/BARRA Growth Index is an unmanaged
                            index representing the performance of those
                            companies in the S&P 500 Index with the highest
                            price to book ratios. The performance of the
                            index does not reflect the deduction of expenses
                            associated with a mutual fund, such as investment
                            management fees. By contrast, the performance of
                            the Portfolio reflects the deduction of these
                            expenses.
<PAGE>   15

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

                                                                              13

                        FUND SUMMARY: INVESTMENTS, RISK & PERFORMANCE

                        Equity Index Portfolio

WHAT IS THE GOAL OF THE
  EQUITY INDEX PORTFOLIO?
                        The Portfolio seeks investment results that correspond
                        to the aggregate price and dividend performance of
                        securities in the Standard & Poor's 500 Composite Stock
                        Price Index ("S&P 500 Index").(1)

WHAT ARE THE EQUITY INDEX
  PORTFOLIO'S MAIN
  INVESTMENT STRATEGIES?The Portfolio invests mainly in stocks included in the
                        S&P 500 Index. The Portfolio may also invest in stock
                        index futures and other equity derivatives. Banc One
                        Investment Advisors attempts to track the performance of
                        the S&P 500 Index to achieve a correlation of 0.95
                        between the performance of the Portfolio and that of the
                        S&P 500 Index without taking into account the
                        Portfolio's expenses. For more information about the
                        Equity Index Portfolio's investment strategies, please
                        read "More About the Portfolios" and "Principal
                        Investment Strategies."

WHAT ARE THE MAIN RISKS
  OF INVESTING IN THE
  EQUITY INDEX PORTFOLIO?
                        The main risks of investing in the Equity Index
                        Portfolio and the circumstances likely to adversely
                        affect your investment are described below. The share
                        price of the Equity Index Portfolio will change every
                        day in response to market conditions. You may lose money
                        if you invest in the Equity Index Portfolio. For
                        additional information on risk, please read "Investment
                        Risks."

MAIN RISKS
- --------------------------
                        Index Investing. The Portfolio attempts to track the
                        performance of the S&P 500 Index. Therefore, securities
                        may be purchased, retained and sold by the Portfolio at
                        times when an actively managed fund would not do so. If
                        the value of securities that are heavily weighted in the
                        index changes, you can expect a greater risk of loss
                        than would be the case if the Portfolio were not fully
                        invested in such securities.

                        Market Risk. The Portfolio invests in equity securities
                        (such as stocks) that are more volatile and carry more
                        risks than other forms of investment. The price of
                        equity securities may rise or fall because of economic
                        or political changes or changes in a company's financial
                        condition. Equity securities are also subject to "stock
                        market risk" meaning that stock prices in general (or
                        S&P 500 Index stock prices in particular) may decline
                        over short or extended periods of time. When the value
                        of the Portfolio's securities goes down, your investment
                        in the Portfolio decreases in value.

                        Derivative Risk. The Portfolio invests in securities
                        that may be considered to be DERIVATIVES. The value of
                        derivative securities is dependent upon the performance
                        of underlying assets or securities. If the underlying
                        assets do not perform as expected, the value of the
                        derivative security and your investment in the Portfolio
                        declines. Derivatives generally are more volatile and
                        are riskier in terms of both liquidity and value than
                        traditional investments.

                        Not FDIC insured. An investment in the Portfolio is not
                        a deposit of Bank One Corporation or any of its
                        affiliates and is not insured or guaranteed by the
                        Federal Deposit Insurance Corporation or any other
                        government agency.

                        (1) "S&P 500" is a registered service mark of
                            Standard & Poor's Corporation, which does not
                            sponsor and is in no way affiliated with One
                            Group Investment Trust.
<PAGE>   16
                                                                              14
- ---------------------------

                           Equity Index Portfolio


HOW HAS THE EQUITY INDEX
  PORTFOLIO PERFORMED?  By showing the variability of the Equity Index
                        Portfolio's performance from year to year, the chart and
                        table below help show the risk of investing in the
                        Portfolio. The returns in the bar chart and table below
                        DO NOT reflect insurance separate account charges. If
                        these charges were included, the returns would be lower
                        than shown. PLEASE REMEMBER THAT THE PAST PERFORMANCE OF
                        THE EQUITY INDEX PORTFOLIO IS NOT NECESSARILY AN
                        INDICATION OF HOW THE PORTFOLIO WILL PERFORM IN THE
                        FUTURE.

The Bar Chart shows changes in the Portfolio's performance from year to year.
Total returns assume reinvestment of dividends and distributions.

                        BAR CHART (per calendar year)
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
<S>                                                           <C>
1999                                                          21.11%
</TABLE>

- --------------------------------------------------------------------------------
Best Quarter:  14.61%  4Q1999       Worst Quarter:  -6.09%  3Q1999
- --------------------------------------------------------------------------------

The Average Annual Total Return Table shows how the Portfolio's average annual
returns for the periods indicated compare to those of a broad measure of market
performance. Average annual total returns for more than one year tend to smooth
out variations in the Portfolio's total returns and are not the same as actual
year-by-year results.

                        AVERAGE ANNUAL TOTAL RETURNS through December 31, 1999
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                  1 YEAR      LIFE OF FUND
                                                             (since 5/1/98)
   <S>                                            <C>       <C>
   One Group Investment Trust Equity Index
     Portfolio                                    21.11%         19.09%
   -------------------------------------------------------------------------
   S&P 500 Index(1)                               21.04%         22.22%
</TABLE>

                        (1) The S&P 500 Index is an unmanaged index generally
                            representative of the performance of large
                            companies in the U.S. stock market. The
                            performance of the index does not reflect the
                            deduction of expenses associated with a mutual
                            fund, such as investment management fees. By
                            contrast, the performance of the Portfolio
                            reflects the deduction of these expenses.
<PAGE>   17

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

                                                                              15

                        FUND SUMMARY: INVESTMENTS, RISK & PERFORMANCE

                        Diversified Equity Portfolio

WHAT IS THE GOAL OF THE
  DIVERSIFIED EQUITY
  PORTFOLIO?            The Portfolio seeks long term capital growth and growth
                        of income with a secondary objective of providing a
                        moderate level of current income.

WHAT ARE THE DIVERSIFIED
  EQUITY PORTFOLIO'S MAIN
  INVESTMENT STRATEGIES?The Portfolio invests mainly in common stocks of
                        companies that have good fundamentals and reasonable
                        valuations with the potential for continued earnings
                        growth over time. The Portfolio uses a multi-style
                        approach, meaning that it may invest across different
                        capitalization levels targeting both value and growth
                        oriented companies. Because the Portfolio seeks return
                        over the long term, Banc One Investment Advisors will
                        not attempt to time the market. For more information
                        about the Diversified Equity Portfolio's investment
                        strategies, please read "More About the Portfolios" and
                        "Principal Investment Strategies."

WHAT ARE THE MAIN RISKS
  OF INVESTING IN THE
  DIVERSIFIED EQUITY
  PORTFOLIO?            The main risks of investing in the Diversified Equity
                        Portfolio and the circumstances likely to adversely
                        affect your investment are described below. The share
                        price of the Diversified Equity Portfolio will change
                        every day in response to market conditions. You may lose
                        money if you invest in the Diversified Equity Portfolio.
                        For additional information on risk, please read
                        "Investment Risks."

            MAIN RISKS
- --------------------------------
                        Market Risk. The Portfolio invests in equity securities
                        (such as stocks) that are more volatile and carry more
                        risks than some other forms of investment. The price of
                        equity securities may rise or fall because of economic
                        or political changes or changes in a company's financial
                        condition. Equity securities are also subject to "stock
                        market risk" meaning that stock prices in general may
                        decline over short or extended periods of time. When the
                        value of the Portfolio's securities goes down, your
                        investment in the Portfolio decreases in value.

                        Smaller Companies. Investments in smaller, newer
                        companies may be riskier than investments in larger,
                        more established companies. Securities of smaller
                        companies tend to be less liquid than securities of
                        larger companies. In addition, small companies may be
                        more vulnerable to economic, market, and industry
                        changes. Because economic events have a greater impact
                        on smaller companies, there may be greater and more
                        frequent changes in their stock price. This may cause
                        unexpected and frequent decreases in the value of your
                        investment in the Portfolio.

                        Not FDIC insured. An investment in the Portfolio is not
                        a deposit of Bank One Corporation or any of its
                        affiliates and is not insured or guaranteed by the
                        Federal Deposit Insurance Corporation or any other
                        government agency.
<PAGE>   18
                                                                              16
- ---------------------------

                           Diversified Equity Portfolio

HOW HAS THE DIVERSIFIED
  EQUITY PORTFOLIO
  PERFORMED?            By showing the variability of the Diversified Equity
                        Portfolio's performance from year to year, the chart and
                        table below help show the risk of investing in the
                        Portfolio. The chart and table reflect that the
                        Diversified Equity Portfolio became the accounting
                        successor to the financial history of the Pegasus
                        Variable Growth and Value Fund on March 31, 1999. The
                        returns in the bar chart and table below DO NOT reflect
                        insurance separate account charges. If these charges
                        were included, the returns would be lower than shown.
                        PLEASE REMEMBER THAT THE PAST PERFORMANCE OF THE
                        DIVERSIFIED EQUITY PORTFOLIO IS NOT NECESSARILY AN
                        INDICATION OF HOW THE PORTFOLIO WILL PERFORM IN THE
                        FUTURE.

The Bar Chart shows changes in the Portfolio's performance from year to year.
Total returns assume reinvestment of dividends and distributions.

                        BAR CHART (per calendar year)
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
<S>                                                           <C>
1996                                                          18.75%
1997                                                          26.80%
1998                                                          13.10%
1999                                                           9.13%
</TABLE>

- --------------------------------------------------------------------------------
Best Quarter:  15.80%  4Q1998       Worst Quarter:  -9.92%  3Q1998
- --------------------------------------------------------------------------------

The Average Annual Total Return Table shows how the Portfolio's average annual
returns for the periods indicated compare to those of a broad measure of market
performance. Average annual total returns for more than one year tend to smooth
out variations in the Portfolio's total returns and are not the same as actual
year-by-year results.

                        AVERAGE ANNUAL TOTAL RETURNS through December 31, 1999
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                              1 YEAR      LIFE OF FUND
                                                                        (since 3/30/95)
                                     <S>                      <C>       <C>
                                     One Group
                                       Investment Trust
                                       Diversified
                                       Equity Portfolio        9.13%         17.88%
                                     ---------------------------------------------------
                                     S&P SuperComposite
                                       1500 Index(1)          20.25%         28.70%
</TABLE>

                        (1) The S&P SuperComposite 1500 Index is an unmanaged
                            index consisting of those stocks making up the
                            S&P 500, S&P MidCap 400 and S&P SmallCap 600
                            Indices representing approximately 87% of the
                            total U.S. equity market capitalization. The
                            performance of the index does not reflect the
                            deduction of expenses associated with a mutual
                            fund, such as investment management fees. By
                            contrast, the performance of the Portfolio
                            reflects the deduction of these expenses.
<PAGE>   19

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

                                                                              17

                        FUND SUMMARY: INVESTMENTS, RISK & PERFORMANCE

                        Mid Cap Growth Portfolio

WHAT IS THE GOAL OF THE
  MID CAP GROWTH
  PORTFOLIO?            The Portfolio seeks growth of capital and secondarily,
                        current income by investing primarily in equity
                        securities.

WHAT ARE THE MID CAP
  GROWTH PORTFOLIO'S MAIN
  INVESTMENT STRATEGIES?The Portfolio invests in securities that have the
                        potential to produce above-average earnings growth per
                        share over a one to three year period. The Portfolio
                        typically invests in mid cap companies with market
                        capitalizations of $500 million to $10 billion.
                        Typically, the Portfolio acquires shares of established
                        companies with a history of above-average growth, as
                        well as those companies expected to enter periods of
                        above-average growth. Not all the securities purchased
                        by the Portfolio will pay dividends. The Portfolio also
                        invests in smaller companies in emerging growth
                        industries. For more information about the Mid Cap
                        Growth Portfolio's investment strategies, please read
                        "More About the Portfolios" and "Principal Investment
                        Strategies."

WHAT ARE THE MAIN RISKS
  OF INVESTING IN THE MID
  CAP GROWTH PORTFOLIO? The main risks of investing in the Mid Cap Growth
                        Portfolio and the circumstances likely to adversely
                        affect your investment are described below. The share
                        price of the Mid Cap Growth Portfolio will change every
                        day in response to market conditions. You may lose money
                        if you invest in the Mid Cap Growth Portfolio. For
                        additional information on risk, please read "Investment
                        Risks."

            MAIN RISKS
- --------------------------------
                        Market Risk. The Portfolio invests in equity securities
                        (such as stocks) that are more volatile and carry more
                        risks than some other forms of investment. The price of
                        equity securities may rise or fall because of economic
                        or political changes or changes in a company's financial
                        condition. Equity securities are also subject to "stock
                        market risk" meaning that stock prices in general (or
                        mid cap growth stock prices in particular) may decline
                        over short or extended periods of time. When the value
                        of the Portfolio's securities goes down, your investment
                        in the Portfolio decreases in value.

                        Smaller Companies. Investments in smaller, newer
                        companies may be riskier than investments in larger,
                        more established companies. Securities of smaller
                        companies tend to be less liquid than securities of
                        larger companies. In addition, small companies may be
                        more vulnerable to economic, market, and industry
                        changes. Because economic events have a greater impact
                        on smaller companies, there may be greater and more
                        frequent changes in their stock price. This may cause
                        unexpected and frequent decreases in the value of your
                        investment in the Portfolio.

                        Not FDIC insured. An investment in the Portfolio is not
                        a deposit of Bank One Corporation or any of its
                        affiliates and is not insured or guaranteed by the
                        Federal Deposit Insurance Corporation or any other
                        government agency.
<PAGE>   20
                                                                              18
- ---------------------------

                           Mid Cap Growth Portfolio

HOW HAS THE MID CAP
  GROWTH PORTFOLIO
  PERFORMED?            By showing the variability of the Mid Cap Growth
                        Portfolio's performance from year to year, the chart and
                        table below help show the risk of investing in the
                        Portfolio. The returns in the bar chart and table below
                        DO NOT reflect insurance separate account charges. If
                        these charges were included, the returns would be lower
                        than shown. PLEASE REMEMBER THAT THE PAST PERFORMANCE OF
                        THE MID CAP GROWTH PORTFOLIO IS NOT NECESSARILY AN
                        INDICATION OF HOW THE PORTFOLIO WILL PERFORM IN THE
                        FUTURE.

The Bar Chart shows changes in the Portfolio's performance from year to year.
Total returns assume reinvestment of dividends and distributions.

                        BAR CHART (per calendar year)
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
<S>                                                           <C>
1995                                                          24.06%
1996                                                          15.67%
1997                                                          29.81%
1998                                                          38.82%
1999                                                          25.42%
</TABLE>

- --------------------------------------------------------------------------------
Best Quarter:  40.10%  4Q1998        Worst Quarter:  -14.67%  3Q1998
- --------------------------------------------------------------------------------

The Average Annual Total Return Table shows how the Portfolio's average annual
returns for the periods indicated compare to those of a broad measure of market
performance. Average annual total returns for more than one year tend to smooth
out variations in the Portfolio's total returns and are not the same as actual
year-by-year results.

AVERAGE ANNUAL TOTAL RETURNS through December 31, 1999
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                                 1 YEAR       5 YEARS       LIFE OF FUND
                                                                                           (Since 8/1/94)
                                     <S>                         <C>          <C>         <C>
                                     One Group Investment
                                       Trust Mid Cap Growth
                                       Portfolio                 25.42%        26.53%          23.56%
                                     ---------------------------------------------------------------------
                                     S&P Mid Cap 400/BARRA
                                       Growth Index(1)           28.74%        27.80%          27.05%
</TABLE>

                        (1) The S&P Mid Cap 400/BARRA Growth Index is an
                            unmanaged index representing the performance of
                            the highest price to book securities in the S&P
                            Mid Cap 400 Index. The performance of the index
                            does not reflect the deduction of expenses
                            associated with a mutual fund, such as investment
                            management fees. By contrast, the performance of
                            the Portfolio reflects the deduction of these
                            expenses.
<PAGE>   21

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

                                                                              19

                        FUND SUMMARY: INVESTMENTS, RISK & PERFORMANCE

                        Diversified Mid Cap Portfolio

WHAT IS THE GOAL OF THE
  DIVERSIFIED MID CAP
  PORTFOLIO?            The Portfolio seeks long term capital growth by
                        investing primarily in equity securities of companies
                        with intermediate capitalizations.

WHAT ARE THE DIVERSIFIED
  MID CAP PORTFOLIO'S
  MAIN INVESTMENT
  STRATEGIES?           The Portfolio invests mainly in equity securities of mid
                        cap companies. Mid cap companies are defined as
                        companies with market capitalizations of $500 million to
                        $10 billion. The Portfolio looks for companies of this
                        size with strong growth potential, stable market share,
                        and an ability to quickly respond to new business
                        opportunities. In choosing securities, the Portfolio
                        invests in mid cap and other companies across different
                        capitalization levels targeting both value and growth
                        oriented companies. Because the Portfolio seeks return
                        over the long term, Banc One Investment Advisors will
                        not attempt to time the market. For more information
                        about the Diversified Mid Cap Portfolio's investment
                        strategies, please read "More About the Portfolios" and
                        "Principal Investment Strategies."

WHAT ARE THE MAIN RISKS
  OF INVESTING IN THE
  DIVERSIFIED MID CAP
  PORTFOLIO?            The main risks of investing in the Diversified Mid Cap
                        Portfolio and the circumstances likely to adversely
                        affect your investment are described below. The share
                        price of the Diversified Mid Cap Portfolio will change
                        every day in response to market conditions. You may lose
                        money if you invest in the Diversified Mid Cap
                        Portfolio. For additional information on risk, please
                        read "Investment Risks."

MAIN RISKS
- --------------------------
                        Market Risk. The Portfolio invests in equity securities
                        (such as stocks) that are more volatile and carry more
                        risks than some other forms of investment. The price of
                        equity securities may rise or fall because of economic
                        or political changes or changes in a company's financial
                        condition. Equity securities also are subject to "stock
                        market risk" meaning that stock prices in general (or
                        mid cap stock prices in particular) may decline over
                        short or extended periods of time. When the value of the
                        Portfolio's securities goes down, your investment in the
                        Portfolio decreases in value.

                        Smaller Companies. Investments in smaller, newer
                        companies may be riskier than investments in larger,
                        more established companies. Securities of smaller
                        companies tend to be less liquid than securities of
                        larger companies. In addition, small companies may be
                        more vulnerable to economic, market, and industry
                        changes. Because economic events have a greater impact
                        on smaller companies, there may be greater and more
                        frequent changes in their stock price. This may cause
                        unexpected and frequent decreases in the value of your
                        investment in the Portfolio.

                        Not FDIC insured. An investment in the Portfolio is not
                        a deposit of Bank One Corporation or any of its
                        affiliates and is not insured or guaranteed by the
                        Federal Deposit Insurance Corporation or any other
                        government agency.
<PAGE>   22
                                                                              20
- ---------------------------

                           Diversified Mid Cap Portfolio

HOW HAS THE DIVERSIFIED
  MID CAP PORTFOLIO
  PERFORMED?            By showing the variability of the Diversified Mid Cap
                        Portfolio's performance from year to year, the chart and
                        table below help show the risk of investing in the
                        Portfolio. The chart and table reflect that the
                        Diversified Mid Cap Portfolio became the accounting
                        successor to the financial history of the Pegasus
                        Variable Mid-Cap Opportunity Fund on March 31, 1999. The
                        returns in the bar chart and table below DO NOT reflect
                        insurance separate account charges. If these charges
                        were included, the returns would be lower than shown.
                        PLEASE REMEMBER THAT THE PAST PERFORMANCE OF THE
                        DIVERSIFIED MID CAP PORTFOLIO IS NOT NECESSARILY AN
                        INDICATION OF HOW THE PORTFOLIO WILL PERFORM IN THE
                        FUTURE.

The Bar Chart shows changes in the Portfolio's performance from year to year.
Total returns assume reinvestment of dividends and distributions.

                        BAR CHART (per calendar year)
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
<S>                                                           <C>
1996                                                          24.53%
1997                                                          26.65%
1998                                                           4.91%
1999                                                          10.50%
</TABLE>

%------------------------------------------------------------------------------
Best Quarter:  22.38%  4Q1998       Worst Quarter:  -20.05%  3Q1998
- -------------------------------------------------------------------------------

The Average Annual Total Return Table shows how the Portfolio's average annual
returns for the periods indicated compare to those of a broad measure of market
performance. Average annual total returns for more than one year tend to smooth
out variations in the Portfolio's total returns and are not the same as actual
year-by-year results.

AVERAGE ANNUAL TOTAL RETURNS through December 31, 1999
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                  1 YEAR      LIFE OF FUND
                                                             (Since 3/30/95)
   <S>                                            <C>       <C>
   One Group Investment Trust Diversified
     Mid Cap Portfolio                            10.50%         15.98%
   --------------------------------------------------------------------------
   S&P Mid Cap 400 Index(1)                       14.72%         23.24%
</TABLE>

                        (1) The S&P Mid Cap 400 Index is an unmanaged index
                            representing the mid-size company segment of the
                            U.S. market. The performance of the index does
                            not reflect the deduction of expenses associated
                            with a mutual fund, such as investment management
                            fees. By contrast, the performance of the
                            Portfolio reflects the deduction of these
                            expenses.
<PAGE>   23

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

                                                                              21

                        FUND SUMMARY: INVESTMENTS, RISK & PERFORMANCE

                        Mid Cap Value Portfolio

WHAT IS THE GOAL OF THE
MID CAP VALUE
PORTFOLIO?              The Portfolio seeks capital appreciation with the
                        secondary goal of achieving current income by investing
                        primarily in equity securities.

WHAT ARE THE MID CAP
  VALUE PORTFOLIO'S MAIN
  INVESTMENT STRATEGIES?The Portfolio invests mainly in equity securities of
                        companies with below market average price-to-earnings
                        and price-to-book value ratios and with market
                        capitalizations of $500 million to $10 billion. In
                        choosing investments, the Portfolio considers the
                        issuer's soundness and earnings prospects. In seeking to
                        achieve the objective of capital appreciation, Banc One
                        Investment Advisors looks at anticipated changes that
                        may positively impact the value of the company such as
                        new products, deployment of new technologies, cost
                        cutting efforts and changes in management. As a
                        secondary consideration, Banc One Investment Advisors
                        looks for companies that have the potential to increase
                        their dividends over time. If Banc One Investment
                        Advisors thinks that a company's fundamentals are
                        declining or that a company's ability to pay dividends
                        has been impaired, it may eliminate the Portfolio's
                        holding of the company's stock. For more information
                        about the Mid Cap Value Portfolio's investment
                        strategies, please read "More About the Portfolios" and
                        "Principal Investment Strategies."

WHAT ARE THE MAIN RISKS
  OF INVESTING IN THE MID
  CAP VALUE PORTFOLIO?  The main risks of investing in the Mid Cap Value
                        Portfolio and the circumstances likely to adversely
                        affect your investment are described below. The share
                        price of the Mid Cap Value Portfolio and its yield will
                        change every day in response to interest rates and other
                        market conditions. You may lose money if you invest in
                        the Mid Cap Value Portfolio. For additional information
                        on risk, please read "Investment Risks."

MAIN RISKS
- --------------------------
                        Market Risk. The Portfolio invests in equity securities
                        (such as stocks) which are more volatile and carry more
                        risks than some other forms of investment. The price of
                        equity securities may rise or fall because of economic
                        or political changes or changes in a company's financial
                        condition. Equity securities are also subject to "stock
                        market risk" meaning that stock prices in general (or
                        mid cap value stock prices in particular) may decline
                        over short or extended periods of time. When the value
                        of the Portfolio's securities goes down, your investment
                        in the Portfolio decreases in value.

                        Smaller Companies. The Portfolio's investments in
                        smaller, newer companies may be riskier than investments
                        in larger, more established companies. Securities of
                        small companies tend to be less liquid than securities
                        of larger companies. In addition, small companies may be
                        more vulnerable to economic, market, and industry
                        changes. Because economic events have a greater impact
                        on smaller companies, there may be greater and more
                        frequent changes in their stock price. This may cause
                        unexpected and frequent decreases in the value of your
                        investment in the Portfolio.

                        Not FDIC insured. An investment in the Portfolio is not
                        a deposit of Bank One Corporation or any of its
                        affiliates and is not insured or guaranteed by the
                        Federal Deposit Insurance Corporation or any other
                        government agency.
<PAGE>   24
22

- ---------------------------

                           Mid Cap Value Portfolio

HOW HAS THE MID CAP
  VALUE PORTFOLIO
  PERFORMED?            By showing the variability of the Mid Cap Value
                        Portfolio's performance from year to year, the chart and
                        table below help show the risk of investing in the
                        Portfolio. The chart and table reflect that the Mid Cap
                        Value Portfolio became the accounting successor to the
                        financial history of the Pegasus Variable Intrinsic
                        Value Fund on March 31, 1999. The returns in the bar
                        chart and table below DO NOT reflect insurance separate
                        account charges. If these charges were included, the
                        returns would be lower than shown. PLEASE REMEMBER THAT
                        THE PAST PERFORMANCE OF THE MID CAP VALUE PORTFOLIO IS
                        NOT NECESSARILY AN INDICATION OF HOW THE PORTFOLIO WILL
                        PERFORM IN THE FUTURE.

The Bar Chart shows changes in the Portfolio's performance from year to year.
Total returns assume reinvestment of dividends and distributions.

                        BAR CHART (per calendar year)
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
<S>                                                           <C>
1998                                                          -3.31%
1999                                                          -1.84%
</TABLE>

- --------------------------------------------------------------------------------
Best Quarter:  11.30%  2Q1999        Worst Quarter:  -14.07%  3Q1998
- --------------------------------------------------------------------------------

The Average Annual Total Return Table shows how the Portfolio's average annual
returns for the periods indicated compare to those of a broad measure of market
performance. Average annual total returns for more than one year tend to smooth
out variations in the Portfolio's total returns and are not the same as actual
year-by-year results.

                        AVERAGE ANNUAL TOTAL RETURNS through December 31, 1999
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                              1 YEAR      LIFE OF FUND
                                                                         (since 5/1/97)
                                     <S>                      <C>       <C>
                                     One Group
                                       Investment Trust
                                       Mid Cap Value
                                       Portfolio              -1.84%          3.99%
                                     ---------------------------------------------------
                                     S&P Mid Cap
                                       400/BARRA Value
                                       Index(1)                2.32%         14.64%
</TABLE>

                        (1) The S&P Mid Cap 400/BARRA Value Index is an
                            unmanaged index representing the performance of
                            the lowest price to book securities in the S&P
                            Mid Cap 400 Index. The performance of the index
                            does not reflect the deduction of expenses
                            associated with a mutual fund, such as investment
                            management fees. By contrast, the performance of
                            the Portfolio reflects the deduction of these
                            expenses.
<PAGE>   25

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

                                                                              23

                        More About The Portfolios

                        Each of the nine portfolios described in this Prospectus
                        is a series of One Group Investment Trust and is managed
                        by Banc One Investment Advisors Corporation. For more
                        information about One Group Investment Trust and Banc
                        One Investment Advisors, please read "Management of One
                        Group Investment Trust" and the Statement of Additional
                        Information.

- --------------------------------------------------------------------------------
PRINCIPAL
   INVESTMENT
   STRATEGIES           This Prospectus describes nine mutual funds with a
                        variety of investment objectives. The principal
                        investment strategies that are used to meet each
                        Portfolio's investment strategy are described in Fund
                        Summaries: Investments, Risk, & Performance in the front
                        of this prospectus. They are also described below. There
                        can be no assurance that the Portfolios will achieve
                        their investment objectives. Please note that each
                        Portfolio may also use strategies that are not described
                        below, but which are described in the Statement of
                        Additional Information.

- -----
                        TYPES OF PORTFOLIOS. The following pages describe
                        investment strategies that are used in more than one
                        Portfolio. Where indicated, the strategies only apply to
                        the Bond Portfolios or the Equity Portfolios.

                        The BOND PORTFOLIOS include:

                        - One Group Investment Trust Bond Portfolio, and

                        - One Group Investment Trust Government Bond Portfolio.

                        The EQUITY PORTFOLIOS include:

                        - One Group Investment Trust Balanced Portfolio,

                        - One Group Investment Trust Large Cap Growth Portfolio,

                        - One Group Investment Trust Equity Index Portfolio,

                        - One Group Investment Trust Diversified Equity
                          Portfolio,

                        - One Group Investment Trust Mid Cap Growth Portfolio,

                        - One Group Investment Trust Diversified Mid Cap
                          Portfolio, and

                        - One Group Investment Trust Mid Cap Value Portfolio.

                        ONE GROUP INVESTMENT TRUST. ALTHOUGH ONE GROUP
                        INVESTMENT TRUST PORTFOLIOS HAVE THE SAME OR SIMILAR
                        INVESTMENT OBJECTIVES AND INVESTMENT STRATEGIES AS
                        SIMILARLY NAMED FUNDS OF ONE GROUP(R) MUTUAL FUNDS, ONE
                        GROUP INVESTMENT TRUST PORTFOLIOS:

                        - ARE NOT THE SAME FUNDS AS ONE GROUP MUTUAL FUNDS;

                        - ARE SMALLER THAN ONE GROUP MUTUAL FUNDS; AND

                        - HAVE DIFFERENT PERFORMANCE, FEES AND EXPENSES THAN ONE
                          GROUP MUTUAL FUNDS.
<PAGE>   26

24

                                          FUNDAMENTAL POLICIES

                        Each Portfolio's investment strategy may involve
                        "fundamental policies." A policy is fundamental if it
                        cannot be changed without the consent of a majority of
                        the outstanding shares of the Portfolio.

- -----
                        THE BOND PORTFOLIOS. Banc One Investment Advisors
                        analyzes four major factors in managing and constructing
                        the Portfolio: duration, market sector, maturity
                        concentrations, and individual securities. Rather than
                        attempting to time the market, Banc One Investment
                        Advisors looks for sectors and securities that it
                        believes will perform consistently well over time as
                        measured by total return. The Bond Portfolios attempt to
                        enhance total return by selecting market sectors and
                        securities that offer risk/reward advantages based on
                        market trends, structural make-up, and credit trends.
                        Individual securities that are purchased by the
                        Portfolios are subject to a disciplined risk/reward
                        analysis both at the time of purchase and on an ongoing
                        basis. This analysis includes an evaluation of interest
                        rate risk, credit risk, and risks associated with the
                        complex legal and technical structure of the investment
                        (e.g., asset-backed securities).

- -----
                        ONE GROUP INVESTMENT TRUST BOND PORTFOLIO. The Portfolio
                        invests in all types of debt securities rated as
                        investment grade, as well as convertible securities,
                        preferred stock, and loan participations.

                        - The Portfolio invests at least 65% of its total assets
                          in debt securities of all types with intermediate to
                          long maturities.

                        - As a matter of fundamental policy, at least 65% of the
                          Portfolio's total assets will consist of bonds.

                        - The Portfolio also may purchase taxable or tax-exempt
                          municipal securities.

                        - The Portfolio's AVERAGE WEIGHTED MATURITY will
                          ordinarily range between four and twelve years,
                          although the Portfolio may shorten its average
                          weighted maturity if deemed appropriate for temporary
                          defensive purposes.

                  WHAT IS AVERAGE WEIGHTED MATURITY?

              Average weighted maturity is the average
              of all the current maturities (that is,
              the term of the securities) of the
              individual securities in a Portfolio
              calculated so as to count most heavily
              those securities with the highest dollar
              value. Average weighted maturity is
              important to bond investors as an
              indication of a Portfolio's sensitivity to
              changes in interest rates. Usually, the
              longer the average weighted maturity, the
              more fluctuation in share price you can
              expect.

- -----
                        ONE GROUP INVESTMENT TRUST GOVERNMENT BOND PORTFOLIO.
                        The Portfolio limits its investments to securities
                        issued by the U.S. Government and its agencies and
                        instrumentalities and related to securities issued by
                        the U.S. government and its agencies and
                        instrumentalities.

                        - At least 65% of the Portfolio's total assets will be
                          invested in debt instruments with principal and
                          interest guaranteed by the U.S. Government or its
                          agencies and instrumentalities, some of which may be
                          subject to repurchase agreements, and other securities
                          representing an interest in or secured by mortgages
                          that are issued or guaranteed by certain U.S.
                          Government agencies or instrumentalities.
<PAGE>   27

                                                                              25

                        - The Portfolio's average weighted maturity will
                          ordinarily range between three and fifteen years,
                          taking into account expected prepayment of principal
                          on certain investments. However, the Portfolio's
                          average weighted remaining maturity may be outside
                          this range if warranted by market conditions.

- -----
                        THE EQUITY PORTFOLIOS. The investment strategies
                        utilized by the Equity Portfolios are described in Fund
                        Summaries; Investments, Risk & Performance and below.

- -----
                        ONE GROUP INVESTMENT TRUST BALANCED PORTFOLIO. The
                        Portfolio invests in a combination of stocks, fixed
                        income securities and money market instruments.
                        Normally, the Portfolio will invest:

                        - between 40% and 75% of total assets in all types of
                          equity securities (including stock of both large and
                          small capitalization companies and growth and value
                          securities). Up to 20% of the equities may be foreign
                          securities, including American Depositary Receipts.

                        - between 25% and 60% of total assets in mid to
                          long-term fixed income securities, including bonds,
                          notes, and other debt securities. The balance will be
                          invested in cash equivalents. For more information on
                          how Banc One Investment Advisors selects fixed income
                          securities, please read "The Bond Portfolios" above.

- -----
                        ONE GROUP INVESTMENT TRUST LARGE CAP GROWTH PORTFOLIO.
                        The Portfolio invests mainly in equity securities of
                        large, well-established companies. The weighted average
                        capitalization of companies in which the Portfolio
                        invests normally will exceed the market median
                        capitalization of the S&P 500 Index.

                        - At least 65% of the Portfolio's total assets will be
                          invested in the equity securities of large,
                          well-established companies.

- -----
                        ONE GROUP INVESTMENT TRUST EQUITY INDEX PORTFOLIO. The
                        Portfolio invests in stocks included in the S&P 500
                        Index. (The Portfolio also invests in stock index
                        futures and other equity derivatives.) Banc One
                        Investment Advisors seeks to achieve a correlation of
                        0.95 between the performance of the Portfolio and that
                        of the S&P 500 Index. The Portfolio may hold up to 10%
                        of its total assets in cash or cash equivalents. (Assets
                        held in margin deposits and segregated accounts for
                        futures contracts are not considered cash or cash
                        equivalents for purposes of the 10% limitation).

                        - The percentage of a stock that the Portfolio holds
                          will be approximately the same percentage that the
                          stock represents in the S&P 500 Index.

                        - Banc One Investment Advisors generally picks stocks in
                          the order of their weightings in the S&P 500 Index,
                          starting with the heaviest weighted stock.

                        - The Portfolio attempts to achieve a correlation
                          between the performance of its portfolio and that of
                          the S&P 500 Index of at least 0.95, without taking
                          into account Portfolio expenses. Perfect correlation
                          would be 1.00.
<PAGE>   28

26

- -----
                        ONE GROUP INVESTMENT TRUST DIVERSIFIED EQUITY PORTFOLIO.
                        The Portfolio invests mainly in common stocks of
                        companies that have the potential for continued earnings
                        growth with strong fundamentals and a reasonable value.

                        - At least 65% of the Portfolio's total assets will be
                          invested in equity securities.

                        - Although the Portfolio may invest up to 35% of the
                          Portfolio's total assets in U.S. government
                          securities, other investment grade fixed income
                          securities, cash, and cash equivalents, the
                          Portfolio's main investment strategy is to invest in
                          equity securities.

- -----
                        ONE GROUP INVESTMENT TRUST DIVERSIFIED MID CAP
                        PORTFOLIO. The Portfolio invests mainly in equity
                        securities of mid capitalization companies. Mid cap
                        companies are defined as companies with market
                        capitalizations of $500 million to $10 billion.

                        - At least 65% of the Portfolio's total assets will be
                          invested in common and preferred stock, rights,
                          warrants, convertible securities, and other equity
                          securities of mid capitalization companies.

                        - Up to 25% of the Portfolio's total assets may be
                          invested in foreign securities. Up to 20% of the
                          Portfolio's total assets may be invested in U.S.
                          Government Securities, other investment grade fixed
                          income securities, cash, and cash equivalents.
                          Although the Portfolio may use these strategies more
                          in the future, the Portfolio's main investment
                          strategy is to invest in equity securities of mid
                          capitalization companies.

- -----
                        ONE GROUP INVESTMENT TRUST MID CAP GROWTH PORTFOLIO. The
                        Portfolio invests in securities of companies that have
                        the potential to produce above-average earnings growth
                        per share over a one-to-three year period.

                        - At least 80% of the Portfolio's total assets will be
                          invested in equity securities of mid cap companies,
                          including common stocks and debt securities and
                          preferred stocks that are convertible to common stock.
                          Mid cap companies are defined as companies with market
                          capitalizations of $500 million to $10 billion.

                        - A portion of the Portfolio's assets will be held in
                          cash equivalents.

- -----
                        ONE GROUP INVESTMENT TRUST MID CAP VALUE PORTFOLIO. The
                        Portfolio invests mainly in equity securities of mid cap
                        companies with below-market average price-to-earnings
                        and price-to-book value ratios. Mid cap companies are
                        defined as companies with market capitalizations of $500
                        million to $10 billion.

                        - At least 80% of the Portfolio's total assets will be
                          invested in equity securities, including common stock
                          and debt securities and preferred stocks both of which
                          are convertible into common stock.

                        - A portion of the Portfolio's assets will be held in
                          cash equivalents.
<PAGE>   29

                                                                              27

- --------------------------------------------------------------------------------
INVESTMENT RISKS        The risks associated with investing in the Portfolios
                        are described below and in Fund Summaries: Investments,
                        Risk & Performance at the front of this prospectus. For
                        information concerning risks associated with specific
                        types of investments, please read Appendix A.

- -----
                        FIXED INCOME SECURITIES: Investments in fixed income
                        securities (for example, bonds) will increase or
                        decrease in value based on changes in interest rates. If
                        rates increase, the value of a Portfolio's investments
                        generally declines. On the other hand, if rates fall,
                        the value of the investments generally increases. The
                        value of your investment in a Bond Portfolio (or an
                        Equity Portfolio such as the Balanced Portfolio that
                        uses bonds as part of its main investment strategy) will
                        increase and decrease as the value of a Portfolio's
                        investments increases and decreases. While securities
                        with longer duration and maturities tend to produce
                        higher yields, they also are subject to greater
                        fluctuations in value when interest rates change.
                        Usually, changes in the value of fixed income securities
                        will not affect cash income generated, but may affect
                        the value of your investment. Fixed income securities
                        also are subject to the risk that the issuer of the
                        security will be unable to meet its repayment
                        obligation.

- -----
                        DERIVATIVES: The Portfolios may invest in securities
                        that may be considered to be DERIVATIVES. These
                        securities may be more volatile than other investments.
                        Derivatives present, to varying degrees, market, credit,
                        leverage, liquidity, and management risks.

                        WHAT IS A DERIVATIVE?
              Derivatives are securities or contracts
              (like futures and options) that derive
              their value from the performance of
              underlying assets or securities.

- -----
                        SMALL CAPITALIZATION COMPANIES: Investments in smaller,
                        younger companies may be riskier and more volatile than
                        investments in larger, more established companies. These
                        companies may be more vulnerable to changes in economic
                        conditions, specific industry conditions, market
                        fluctuations, and other factors affecting the
                        profitability of other companies. Because economic
                        events may have a greater impact on smaller companies,
                        there may be a greater and more frequent fluctuation in
                        their stock price. This may cause frequent and
                        unexpected increases or decreases in the value of your
                        investment.

- -----
                        LOWER RATED SECURITIES: The Bond Portfolio may purchase
                        corporate and municipal bonds that are rated in ANY
                        category. Bonds in the lowest investment grade rating
                        category are considered to have speculative
                        characteristics. Changes in economic conditions or other
                        circumstances may have a greater effect on the ability
                        of issuers of these securities to make principal and
                        interest payments than they do on issuers of higher
                        grade securities. Bonds rated below investment grade are
                        considered speculative and may be classified as "junk
                        bonds." JUNK BONDS are considered to be high risk
                        investments. These risks include greater risk of loss,
                        greater sensitivity to economic changes, valuation
                        difficulties, and liquidity difficulties. The Bond
                        Portfolio will invest no more than 5% of its net assets
                        in securities rated below investment grade.
<PAGE>   30

28

- --------------------------------------------------------------------------------
INVESTMENT
   POLICIES             Each Portfolio's investment objective and the investment
                        policies summarized below are fundamental. This means
                        that they cannot be changed without the consent of a
                        majority of the outstanding shares of the Portfolios.
                        The full text of the fundamental policies can be found
                        in the Statement of Additional Information.

- -----
                        Each Portfolio may not:

                        1. Purchase the securities of an issuer if as a result
                           more than 5% of its total assets would be invested in
                           the securities of that issuer or the Portfolio would
                           own more than 10% of the outstanding voting
                           securities of that issuer. This does not include
                           securities issued or guaranteed by the United States,
                           its agencies or instrumentalities, securities of
                           registered investment companies, and repurchase
                           agreements involving these securities. This
                           restriction applies with respect to 75% of a
                           Portfolio's total assets.

                        2. Concentrate its investments in the securities of one
                           or more issuers conducting their principal business
                           in a particular industry or group of industries. This
                           does not include obligations issued or guaranteed by
                           the U.S. Government or its agencies and
                           instrumentalities and repurchase agreements involving
                           such securities.

                        3. Make loans, except that a Portfolio may:

                            (i) purchase or hold debt instruments in accordance
                                with its investment objective and policies;
                           (ii) enter into repurchase agreements; and
                          (iii) engage in securities lending.

                        The Equity Index Portfolio may not:

                        1. Invest more than 10% of its total assets in
                           securities issued or guaranteed by the United States,
                           its agencies or instrumentalities. Repurchase
                           agreements held in margin deposits and segregated
                           accounts for futures contracts are not considered
                           issued or guaranteed by the United States, its
                           agencies or instrumentalities for purposes of the 10%
                           limitation.

                        Additional investment policies can be found in the
                        Statement of Additional Information.

- --------------------------------------------------------------------------------
PORTFOLIO QUALITY       Various rating organizations (like Standard & Poor's
                        Corporation and Moody's Investor Service) assign ratings
                        to securities (other than equity securities). Generally,
                        ratings are divided into two main categories:
                        "Investment Grade Securities" and "Non-Investment Grade
                        Securities." Although there is always a risk of default,
                        rating agencies believe that issuers of Investment Grade
                        Securities have a high probability of making payments on
                        such securities. Non-Investment Grade Securities include
                        securities that, in the opinion of the rating agencies,
                        are more likely to default than Investment Grade
                        Securities. The Portfolios only purchase securities that
                        meet the rating criteria described below. Banc One
                        Investment Advisors will look at a security's rating at
                        the time of investment. If the securities are unrated,
                        Banc One Investment Advisors must determine that they
                        are of comparable quality to rated securities.
<PAGE>   31

                                                                              29

- -----
                        RATINGS OF THE BOND PORTFOLIOS' SECURITIES

                        One Group Investment Trust Government Bond Portfolio
                        only may invest in debt securities rated in any of the
                        three highest investment grade rating categories.

                        One Group Investment Trust Bond Portfolio may purchase
                        securities that meet the following rating criteria:

                          - corporate and municipal bonds -- rated in any rating
                            category.

                          - preferred stock -- rated in any of the four
                            investment grade rating categories.

                          - commercial paper -- rated in the highest or second
                            highest rating categories.

- -----
                        RATINGS OF THE EQUITY PORTFOLIOS' SECURITIES

                        - If a Portfolio invests in municipal bonds, the bonds
                          must be rated as investment grade.

                        - Other municipal securities, such as tax exempt
                          commercial paper, notes and variable rate demand
                          obligations, must be rated in one of the two highest
                          investment grade categories at the time of investment.

                        - Corporate bonds generally will be rated in one of the
                          three highest investment grade categories.

                        Banc One Investment Advisors reserves the right to
                        invest in corporate bonds that present attractive
                        opportunities and are rated in the lowest investment
                        grade category. These corporate bonds may be riskier
                        than higher rated bonds.

                        For more information about ratings, please see
                        "Description of Ratings" in the Statement of Additional
                        Information.

- --------------------------------------------------------------------------------
TEMPORARY
   DEFENSIVE
   POSITIONS            To respond to unusual market conditions, the Portfolios
                        may invest their assets in cash and CASH EQUIVALENTS for
                        temporary defensive purposes. These investments may
                        result in a lower yield than lower-quality or longer
                        term investments and may prevent the Portfolios from
                        meeting their investment objectives.

                      WHAT IS A CASH EQUIVALENT?

              Cash Equivalents are highly liquid, high
              quality instruments with maturities of
              three months or less on the date they are
              purchased. They include securities issued
              by the U.S. Government, its agencies and
              instrumentalities, repurchase agreements
              (other than equity repurchase agreements),
              certificates of deposit, bankers'
              acceptances, commercial paper (rated in
              one of the two highest rating categories),
              variable rate master demand notes, and
              bank money market deposit accounts.

                        Bond Portfolios. For temporary defensive purposes as
                        determined by Banc One Investment Advisors, the Bond
                        Portfolios may invest up to 100% of their assets in cash
                        equivalents, and may hold a portion of their assets in
                        cash for liquidity purposes.
<PAGE>   32

30

                        Equity Portfolios. For temporary defensive purposes as
                        determined by Banc One Investment Advisors, the Equity
                        Portfolios (except the Equity Index Portfolio and
                        Diversified Mid Cap Portfolio), may invest 100% of their
                        total assets in cash and cash equivalents. The
                        Diversified Mid Cap Portfolio may invest up to 20% and
                        the Equity Index Portfolio may invest 10% of their total
                        assets in cash and cash equivalents. (Assets held in
                        margin deposits and segregated accounts for futures
                        contracts are not considered cash or cash equivalents
                        for purposes of the 10% limitation in the Equity Index
                        Portfolio).

- --------------------------------------------------------------------------------
PORTFOLIO
   TURNOVER             The Portfolios may engage in active and frequent trading
                        of portfolio securities to achieve their principal
                        investment strategies. Portfolio turnover may vary
                        greatly from year to year, as well as within a
                        particular year.

                        Higher portfolio turnover rates will likely result in
                        higher transaction costs to the Portfolios. The
                        portfolio turnover rate for each Portfolio for the
                        fiscal year ended December 31, 1999 is shown on the
                        Financial Highlights.

- --------------------------------------------------------------------------------
SHAREHOLDER
   INFORMATION

                  PRICING
         PORTFOLIO SHARES
- --------------------------------
                        HOW ARE PORTFOLIO SHARES PRICED? The net asset value or
                        NAV per share for each Portfolio is determined as of the
                        close of regular trading on the New York Stock Exchange
                        (usually 4 P.M. Eastern Time), on each day the
                        Portfolios are open for business. On occasion, the New
                        York Stock Exchange will close before 4 P.M. Eastern
                        Time. When that happens, the NAV will be calculated as
                        of the time the New York Stock Exchange closes. The NAV
                        per share is calculated by adding the value of all
                        securities and other assets of a Portfolio, deducting
                        its liabilities, and dividing by the number of shares of
                        the Portfolio that are outstanding.

                        WHEN ARE THE PORTFOLIOS' BUSINESS DAYS? The Portfolios
                        are open for business on days that the New York Stock
                        Exchange is open for business. The Portfolios will be
                        closed on weekends and days on which the New York Stock
                        Exchange is closed including the following holidays: New
                        Year's Day, Martin Luther King, Jr. Day, President's
                        Day, Good Friday, Memorial Day, Independence Day, Labor
                        Day, Thanksgiving, and Christmas.
<PAGE>   33

                                                                              31

               PURCHASING
         PORTFOLIO SHARES
- --------------------------------
                        WHO CAN PURCHASE SHARES OF THE PORTFOLIOS? Shares of the
                        Portfolios are sold at net asset value to SEPARATE
                        ACCOUNTS of insurance companies to fund variable annuity
                        and variable life contracts. You and other purchasers of
                        variable life or variable annuity contracts will not own
                        shares of the Portfolios directly. Rather, all shares
                        will be held by the separate accounts for your benefit
                        and the benefit of other purchasers of variable annuity
                        and variable life contracts. All investments in the
                        Portfolios are credited to the shareholder's account in
                        the form of full or fractional shares of the designated
                        Portfolios. The Portfolios do not issue share
                        certificates. The interests of different separate
                        accounts are not always the same and material,
                        irreconcilable conflicts may arise. The Board of
                        Trustees will monitor events for such conflicts and,
                        should they arise, will determine what action, if any,
                        should be taken.

                        ARE THERE LIMITS ON PORTFOLIO PURCHASES? Yes. Initial
                        and subsequent purchase payments allocated to a specific
                        Portfolio are subject to any limits set by your variable
                        annuity or variable life contract. For information
                        concerning the purchase and redemption of shares through
                        your variable annuity or variable life contract, refer
                        to the literature that you received when you purchased
                        your variable annuity or variable life contract.

      VOTING AND MEETINGS
- --------------------------------
                        HOW ARE SHARES OF THE PORTFOLIO VOTED? If required by
                        the SEC, the insurance company that issued your variable
                        annuity or variable life contract will solicit voting
                        instructions from you and other purchasers of variable
                        annuity or variable life contracts with respect to any
                        matters that are presented to a vote of shareholders.
                        Each Portfolio votes separately on matters relating
                        solely to that Portfolio or which affect that Portfolio
                        differently. However, all shareholders will have equal
                        voting rights on matters that affect all shareholders
                        equally. Shareholders shall be entitled to one vote for
                        each share held.

                        WHEN ARE SHAREHOLDER MEETINGS HELD? One Group Investment
                        Trust does not hold annual meetings of shareholders but
                        may hold special meetings. Special meetings are held,
                        for example, to elect or remove Trustees, change a
                        Portfolio's fundamental investment objectives, or
                        approve an investment advisory contract.

                REDEEMING
         PORTFOLIO SHARES
- --------------------------------
                        Separate accounts may redeem shares to make benefit or
                        surrender payments to you and other purchasers of
                        variable annuity or variable life contracts or for other
                        reasons described in the separate account literature
                        that you received when you purchased your variable
                        annuity or variable life contract. Redemptions are
                        processed on any day on which the Portfolios are open
                        for business. Shares are redeemed at the net asset value
                        next determined after the redemption order, in proper
                        form, is received by One Group Investment Trust's
                        transfer agent, State Street Bank and Trust Company.
<PAGE>   34

32

                DIVIDENDS
- --------------------------------
                          - All dividends are distributed to the separate
                            accounts on a quarterly basis and will be
                            automatically reinvested in Portfolio shares.

                          - Dividends are not taxable as current income to you
                            or other purchasers of variable annuity or variable
                            life insurance contracts.

                QUESTIONS
- --------------------------------
                          - Any questions regarding the Portfolios should be
                            directed to One Group Investment Trust, 1111 Polaris
                            Parkway, Suite B-2, Columbus, Ohio 43271-0211,
                            1-800-480-4111. All questions regarding variable
                            annuities or variable life insurance contracts
                            should be directed to the address indicated in the
                            prospectuses or other literature that you received
                            when you purchased your variable annuity or variable
                            life product.

          TAX INFORMATION
- --------------------------------
                        Generally, owners of variable annuity and variable life
                        contracts are not taxed currently on income or gains
                        realized with respect to such contracts. However, some
                        distributions from such contracts may be taxable at
                        ordinary income tax rates. In addition, distributions
                        made to an owner who is younger than 59 1/2 may be
                        subject to a 10% penalty tax. Investors should ask their
                        own tax advisors for more information on their own tax
                        situation, including possible state or local taxes.

                        In order for investors to receive the favorable tax
                        treatment available to holders of variable annuity and
                        variable life contracts, the separate accounts
                        underlying such contracts, as well as the Portfolios in
                        which such accounts invest, must meet certain
                        diversification requirements. Each Portfolio intends to
                        comply with these requirements. If a Portfolio does not
                        meet such requirements, income allocable to the
                        contracts would be taxable currently to the holders of
                        such contracts.

                        Please refer to the Statement of Additional Information
                        for more information regarding the tax treatment of the
                        Portfolios. For a discussion of the tax consequences of
                        variable annuity and variable life contracts, please
                        refer to the prospectuses or other documents that you
                        received when you purchased your variable annuity or
                        variable life product.

          QUALIFIED PLANS
- --------------------------------
                        In the future, shares of the portfolios may also be sold
                        to qualified pension and retirement plans for the
                        benefit of plan participants. For information about the
                        purchase and redemption of shares by qualified pension
                        and retirement plans as well as the tax consequences
                        impacting such plans, refer to the literature received
                        from your plan administrator.
<PAGE>   35

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

                                                                              33

                                   Management of One Group
                                   Investment  Trust

- --------------------------------------------------------------------------------
THE ADVISOR             Banc One Investment Advisors (1111 Polaris Parkway, P.O.
                        Box 710211, Columbus, Ohio 43271-0211) makes the
                        day-to-day investment decisions for the Portfolios and
                        continuously reviews, supervises and administers each
                        Portfolio's investment program. Banc One Investment
                        Advisors performs its responsibilities subject to the
                        supervision of, and policies established by, the
                        Trustees of One Group Investment Trust. Banc One
                        Investment Advisors has served as investment advisor to
                        the Trust since its inception. In addition, Banc One
                        Investment Advisors serves as investment advisor to
                        other mutual funds and individual corporate, charitable,
                        and retirement accounts. As of December 31, 1999, Banc
                        One Investment Advisors, an indirect wholly-owned
                        subsidiary of Bank One Corporation, managed over $127
                        billion in assets.

- --------------------------------------------------------------------------------
ADVISORY FEES           Banc One Investment Advisors is paid a fee based on an
                        annual percentage of the average daily net assets of
                        each Portfolio. For the fiscal year ended December 31,
                        1999, the Portfolios paid advisory fees at the following
                        rates:

- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                                 ANNUAL RATE
                                                               AS PERCENTAGE OF
                                     PORTFOLIO             AVERAGE DAILY NET ASSETS
                                     <S>                 <C>
                                     Government Bond
                                       Portfolio                     .45%
                                     ------------------------------------------------
                                     Balanced Portfolio              .70%
                                     ------------------------------------------------
                                     Large Cap Growth
                                       Portfolio                     .65%
                                     ------------------------------------------------
                                     Equity Index
                                       Portfolio                  .27%(2)
                                     ------------------------------------------------
                                     Mid Cap Growth
                                       Portfolio                     .65%
                                     ------------------------------------------------
                                     Bond Portfolio(1)            .45%(2)
                                     ------------------------------------------------
                                     Diversified Equity
                                       Portfolio(1)               .68%(2)
                                     ------------------------------------------------
                                     Diversified Mid
                                       Cap Portfolio(1)           .60%(2)
                                     ------------------------------------------------
                                     Mid Cap Value
                                       Portfolio(1)               .63%(2)
                                     ------------------------------------------------
</TABLE>

                        (1)On March 31, 1999, the Bond Portfolio, the
                           Diversified Equity Portfolio, the Diversified Mid
                           Cap Portfolio, and Mid Cap Value Portfolio were
                           substituted for certain Pegasus Variable Funds.
                           The investment advisory fees include fees paid to
                           First Chicago NBD Investment Management Company
                           ("FCNIMCo"), an affiliate of Banc One Investment
                           Advisors, as advisor to the Pegasus Variable
                           Funds.

                        (2)A portion of the advisory fees for the fiscal year
                           ended December 31, 1999 for the Equity Index
                           Portfolio, the Bond Portfolio, the Diversified
                           Equity Portfolio, the Diversified Mid Cap
                           Portfolio, and the Mid Cap Value Portfolios were
                           voluntarily waived. Without such waivers, the
                           investment advisory fees would have been as
                           follows:

<TABLE>
<CAPTION>
                                                                                             ANNUAL RATE AS PERCENTAGE
                                     PORTFOLIO                                              OF AVERAGE DAILY NET ASSETS
                                     <S>                                                    <C>
                                     Equity Index Portfolio                                           .30%
                                     Bond Portfolio                                                   .55%*
                                     Diversified Equity Portfolio                                     .70%*
                                     Diversified Mid Cap Portfolio                                    .71%*
                                     Mid Cap Value Portfolio                                          .70%*
</TABLE>

                            (*)Represents a blended contractual rate
                               consisting of the contractual fees payable to
                               FCNIMCo for the period January 1, 1999 through
                               March 31, 1999 and the contractual fees
                               payable to Banc One Investment Advisors from
                               March 31, 1999 through December 31, 1999.
<PAGE>   36

34

- -----------------------------------------------------------------------------
THE PORTFOLIO
   MANAGERS             The Bond Portfolios are managed by teams of portfolio
                        managers, research analysts and fixed income traders.
                        The team works together to establish general duration
                        and sector strategies for the Portfolio. Each team
                        member makes recommendations about securities in the
                        Portfolio. The research analysts and trading personnel
                        support individual security and sector recommendations,
                        while the portfolio managers select and allocate
                        individual securities in a manner designed to meet the
                        investment objectives of the Portfolio.

                        The Equity Portfolios are managed by teams of portfolio
                        managers, research analysts, and other investment
                        management professionals. For all Equity Portfolios
                        except the Equity Index Portfolio, each team member
                        makes recommendations about the securities in a
                        Portfolio. The research analysts support in-depth
                        industry analysis and recommendations, while the
                        portfolio managers determine strategy, industry
                        weightings, portfolio holdings, and cash positions.
<PAGE>   37

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

                              FINANCIAL HIGHLIGHTS
                           Bond Portfolio

                                                                              35

The Financial Highlights table is intended to help you understand the
Portfolio's performance for the last five years or the period of the Portfolio's
operations, whichever is shorter. Certain information reflects financial results
for a single Portfolio share. The total returns in the table represent the rate
that an investor would have earned or lost on an investment in the Portfolio
(assuming reinvestment of all dividends and distributions). This information for
the Portfolio has been audited by PricewaterhouseCoopers LLP and other
independent accountants. PricewaterhouseCoopers LLP's report, along with the
Portfolio's financial statements, is incorporated by reference in the Statement
of Additional Information, which is available upon request.

<TABLE>
<CAPTION>
                                                                     YEAR ENDED
                                                                    DECEMBER 31,           MAY 1 TO
                                                                 -------------------     DECEMBER 31,
                                                                 1999(A)      1998         1997(B)
- -----------------------------------------------------------------------------------------------------
<S>                                                              <C>         <C>         <C>
NET ASSET VALUE, BEGINNING OF PERIOD                             $ 10.73     $ 10.44       $ 10.00
- -----------------------------------------------------------------------------------------------------
Investment Operations:
  Net investment income                                             0.60        0.57          0.37
  Net realized and unrealized appreciation (depreciation)          (0.76)       0.31          0.45
- -----------------------------------------------------------------------------------------------------
Total from investment operations                                   (0.16)       0.88          0.82
- -----------------------------------------------------------------------------------------------------
Distributions:
  From net investment income                                       (0.59)      (0.58)        (0.37)
  From net realized gains from investments                             -       (0.01)        (0.01)
- -----------------------------------------------------------------------------------------------------
Total distributions                                                (0.59)      (0.59)        (0.38)
- -----------------------------------------------------------------------------------------------------
Net increase (decrease) in net asset value                         (0.75)       0.29          0.44
- -----------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD                                   $  9.98     $ 10.73       $ 10.44
- -----------------------------------------------------------------------------------------------------
Total return                                                      (1.50%)      8.66%        12.29%(C)

RATIOS AND SUPPLEMENTAL DATA:
  Net assets, end of period (000)                                $67,844     $60,892       $34,230
  Ratio of expenses to average net assets                          0.75%       0.75%         0.75%(C)
  Ratio of expenses to average net assets excluding
    waivers/reimbursements (D)                                     0.85%       0.81%         0.77%(C)
  Ratio of net investment income to average net assets             5.86%       5.36%         5.97%(C)
  Portfolio turnover                                               7.50%      14.50%        14.80%(C)
</TABLE>

(A) On March 31, 1999, the One Group Investment Trust Bond Portfolio was
substituted for the Pegasus Variable Bond Fund. Financial highlights for the
period prior to March 31, 1999 represent the Pegasus Variable Bond Fund. (B)
Commenced operations on May 1, 1997. (C) Annualized. (D) Ratios calculated as if
no expenses were waived.
<PAGE>   38
36

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

                              FINANCIAL HIGHLIGHTS
                           Government Bond Portfolio


The Financial Highlights table is intended to help you understand the
Portfolio's performance for the last five years or the period of the Portfolio's
operations, whichever is shorter. Certain information reflects financial results
for a single Portfolio share. The total returns in the table represent the rate
that an investor would have earned or lost on an investment in the Portfolio
(assuming reinvestment of all dividends and distributions). This information for
the Portfolio has been audited by PricewaterhouseCoopers LLP whose report, along
with the Portfolio's financial statements, is incorporated by reference in the
Statement of Additional Information, which is available upon request.

<TABLE>
<CAPTION>
                                                                              YEAR ENDED DECEMBER 31,
                                                              -------------------------------------------------------
                                                               1999        1998        1997        1996        1995
- -----------------------------------------------------------------------------------------------------------------------------
<S>                                                           <C>         <C>         <C>         <C>         <C>     <C>
NET ASSET VALUE, BEGINNING OF PERIOD                          $ 10.64     $ 10.48     $ 10.15     $ 10.48     $  9.69
- -----------------------------------------------------------------------------------------------------------------------------
Investment Operations:
  Net investment income                                          0.56        0.56        0.60        0.59        0.64
  Net realized and unrealized appreciation (depreciation)       (0.70)       0.20        0.35       (0.33)       0.94
- -----------------------------------------------------------------------------------------------------------------------------
Total from investment operations                                (0.14)       0.76        0.95        0.26        1.58
- -----------------------------------------------------------------------------------------------------------------------------
Distributions:
  From net investment income                                    (0.54)      (0.56)      (0.60)      (0.59)      (0.64)
  In excess of net investment income                                -       (0.01)          -           -           -
  From net realized gains from investments                          -       (0.03)      (0.02)          -       (0.15)
- -----------------------------------------------------------------------------------------------------------------------------
Total distributions                                             (0.54)      (0.60)      (0.62)      (0.59)      (0.79)
- -----------------------------------------------------------------------------------------------------------------------------
Net increase (decrease) in net asset value                      (0.68)       0.16        0.33       (0.33)       0.79
- -----------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD                                $  9.96     $ 10.64     $ 10.48     $ 10.15     $ 10.48
- -----------------------------------------------------------------------------------------------------------------------------
Total return                                                   (1.31%)      7.32%       9.67%       2.69%      16.69%
RATIOS/SUPPLEMENTAL DATA:
  Net assets, end of period (000)                             $64,159     $42,187     $22,365     $14,622     $ 9,016
  Ratio of expenses to average net assets                       0.73%       0.75%       0.75%       0.75%       0.75%
  Ratio of expenses to average net assets excluding
    waivers/reimbursements (A)                                  0.73%       0.78%       0.88%       1.01%       1.47%
  Ratio of net investment income to average net assets          5.68%       5.56%       6.06%       6.11%       6.54%
  Ratio of net investment income to average net assets
    excluding waivers/reimbursements (A)                        5.68%       5.53%       5.93%       5.85%       5.80%
  Portfolio turnover                                           55.15%      40.40%      21.30%      21.30%      34.10%
</TABLE>

(A) Ratios calculated as if no expenses were waived.
<PAGE>   39

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

                              FINANCIAL HIGHLIGHTS
                           Balanced Portfolio

                                                                              37

The Financial Highlights table is intended to help you understand the
Portfolio's performance for the last five years or the period of the Portfolio's
operations, whichever is shorter. Certain information reflects financial results
for a single Portfolio share. The total returns in the table represent the rate
that an investor would have earned or lost on an investment in the Portfolio
(assuming reinvestment of all dividends and distributions). This information for
the Portfolio has been audited by PricewaterhouseCoopers LLP whose report, along
with the Portfolio's financial statements, is incorporated by reference in the
Statement of Additional Information, which is available upon request.

<TABLE>
<CAPTION>
                                                                               YEAR ENDED DECEMBER 31,
                                                              ---------------------------------------------------------
                                                                1999         1998        1997        1996        1995
- -----------------------------------------------------------------------------------------------------------------------
<S>                                                           <C>          <C>          <C>         <C>         <C>
NET ASSET VALUE, BEGINNING OF PERIOD                          $  15.14     $  13.19     $ 11.93     $ 11.24     $  9.81
- -----------------------------------------------------------------------------------------------------------------------
Investment Operations:
  Net investment income                                           0.39         0.39        0.39        0.34        0.36
  Net realized and unrealized appreciation                        0.83         2.14        2.31        0.98        1.64
- -----------------------------------------------------------------------------------------------------------------------
Total from investment operations                                  1.22         2.53        2.70        1.32        2.00
- -----------------------------------------------------------------------------------------------------------------------
Distributions:
  From net investment income                                     (0.38)       (0.39)      (0.39)      (0.34)      (0.36)
  From net realized gains from investments                       (0.30)       (0.19)      (1.05)      (0.23)      (0.21)
  In excess of realized gains from investments                       -            -           -       (0.04)          -
  Tax return of capital                                              -            -           -       (0.02)          -
- -----------------------------------------------------------------------------------------------------------------------
Total distributions                                              (0.68)       (0.58)      (1.44)      (0.63)      (0.57)
- -----------------------------------------------------------------------------------------------------------------------
Net increase in net asset value                                   0.54         1.95        1.26        0.69        1.43
- -----------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD                                $  15.68     $  15.14     $ 13.19     $ 11.93     $ 11.24
- -----------------------------------------------------------------------------------------------------------------------
Total return                                                     8.20%       19.09%      22.90%      11.92%      20.69%
RATIOS/SUPPLEMENTAL DATA:
  Net assets, end of period (000)                             $183,980     $102,845     $41,446     $14,883     $ 5,455
  Ratio of expenses to average net assets                        0.95%        1.00%       1.00%       1.00%       1.00%
  Ratio of expenses to average net assets excluding
    waivers/reimbursements (A)                                   0.95%        1.00%       1.15%       1.44%       1.96%
  Ratio of net investment income to average net assets           2.74%        2.66%       3.24%       3.27%       3.66%
  Ratio of net investment income to average net assets
    excluding waivers/reimbursements (A)                         2.74%        2.66%       3.07%       2.83%       2.70%
  Portfolio turnover                                            60.13%       32.10%      60.90%      64.80%      66.30%
</TABLE>

(A) Ratios calculated as if no expenses were waived.
<PAGE>   40
38

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

                              FINANCIAL HIGHLIGHTS
                           Large Cap Growth Portfolio


The Financial Highlights table is intended to help you understand the
Portfolio's performance for the last five years or the period of the Portfolio's
operations, whichever is shorter. Certain information reflects financial results
for a single Portfolio share. The total returns in the table represent the rate
that an investor would have earned or lost on an investment in the Portfolio
(assuming reinvestment of all dividends and distributions). This information for
the Portfolio has been audited by PricewaterhouseCoopers LLP whose report, along
with the Portfolio's financial statements, is incorporated by reference in the
Statement of Additional Information, which is available upon request.

<TABLE>
<CAPTION>
                                                                               YEAR ENDED DECEMBER 31,
                                                              ---------------------------------------------------------
                                                                1999         1998        1997        1996        1995
- -----------------------------------------------------------------------------------------------------------------------
<S>                                                           <C>          <C>          <C>         <C>         <C>
NET ASSET VALUE, BEGINNING OF PERIOD                          $  22.63     $  17.21     $ 13.67     $ 12.12     $  9.99
- -----------------------------------------------------------------------------------------------------------------------
Investment Operations:
  Net investment income                                           0.02         0.06        0.10        0.16        0.20
  Net realized and unrealized appreciation                        6.60         7.03        4.25        1.86        2.20
- -----------------------------------------------------------------------------------------------------------------------
Total from investment operations                                  6.62         7.09        4.35        2.02        2.40
- -----------------------------------------------------------------------------------------------------------------------
Distributions:
  From net investment income                                     (0.02)       (0.06)      (0.10)      (0.16)      (0.20)
  In excess of net investment income                             (0.02)           -           -           -           -
  From net realized gains from investments                       (2.65)       (1.61)      (0.71)      (0.30)      (0.07)
  In excess of realized gains from investments                       -            -           -       (0.01)          -
- -----------------------------------------------------------------------------------------------------------------------
Total distributions                                              (2.69)       (1.67)      (0.81)      (0.47)      (0.27)
- -----------------------------------------------------------------------------------------------------------------------
Net increase in net asset value                                   3.93         5.42        3.54        1.55        2.13
- -----------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD                                $  26.56     $  22.63     $ 17.21     $ 13.67     $ 12.12
- -----------------------------------------------------------------------------------------------------------------------
Total Return                                                    29.26%       41.27%      31.93%      16.67%      24.13%
RATIOS/SUPPLEMENTAL DATA:
  Net assets, end of period (000)                             $360,018     $202,035     $99,628     $42,893     $16,119
  Ratio of expenses to average net assets                        0.88%        0.93%       1.00%       0.98%       0.90%
  Ratio of expenses to average net assets excluding
    waivers/reimbursements(A)                                    0.88%        0.93%       1.00%       1.16%       1.64%
  Ratio of net investment income to average net assets           0.08%        0.32%       0.69%       1.29%       2.02%
  Ratio of net investment income to average net assets
    excluding waivers/reimbursements(A)                          0.08%        0.32%       0.69%       1.11%       1.28%
  Portfolio turnover                                            94.18%       61.00%      34.40%      38.70%      37.40%
</TABLE>

(A) Ratios calculated as if no expenses were waived.
<PAGE>   41

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

                              FINANCIAL HIGHLIGHTS
                           Equity Index Portfolio

                                                                              39

The Financial Highlights table is intended to help you understand the
Portfolio's performance for the last five years or the period of the Portfolio's
operations, whichever is shorter. Certain information reflects financial results
for a single Portfolio share. The total returns in the table represent the rate
that an investor would have earned or lost on an investment in the Portfolio
(assuming reinvestment of all dividends and distributions). This information for
the Portfolio has been audited by PricewaterhouseCoopers LLP whose report, along
with the Portfolio's financial statements, is incorporated by reference in the
Statement of Additional Information, which is available upon request.

<TABLE>
<CAPTION>
                                                                  YEAR ENDED        MAY 1 TO
                                                                 DECEMBER 31,     DECEMBER 31,
                                                                     1999           1998(A)
- ----------------------------------------------------------------------------------------------
<S>                                                              <C>              <C>
NET ASSET VALUE, BEGINNING OF PERIOD                               $ 10.97          $ 10.00
- ----------------------------------------------------------------------------------------------
Investment Operations:
  Net investment income                                               0.17             0.08
  Net realized and unrealized appreciation                            2.13             0.97
- ----------------------------------------------------------------------------------------------
Total from investment operations                                      2.30             1.05
- ----------------------------------------------------------------------------------------------
Distributions:
  From net investment income                                         (0.17)           (0.08)
  From net realized gains from investments                           (0.16)               -
- ----------------------------------------------------------------------------------------------
Total distributions                                                  (0.33)           (0.08)
- ----------------------------------------------------------------------------------------------
Net increase in net asset value                                       1.97             0.97
- ----------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD                                     $ 12.94          $ 10.97
- ----------------------------------------------------------------------------------------------
Total return                                                        21.11%           10.52%

RATIOS/SUPPLEMENTAL DATA:
  Net assets, end of period (000)                                  $55,128          $14,481
  Ratio of expenses to average net assets                            0.55%         0.55%(B)
  Ratio of expenses to average net asset excluding
    waivers/reimbursements(c)                                        0.58%         1.13%(B)
  Ratio of net investment income to average net assets               1.67%         1.45%(B)
  Ratio of net investment income to average net assets
    excluding waivers/reimbursements(c)                              1.64%         0.87%(B)
  Portfolio turnover                                                 1.50%            2.30%
</TABLE>

(A) Commenced operations on May 1, 1998. (B) Annualized. (C) Ratios calculated
as if no expenses were waived.
<PAGE>   42

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

                              FINANCIAL HIGHLIGHTS
                           Diversified Equity Portfolio

40

The Financial Highlights table is intended to help you understand the
Portfolio's performance for the last five years or the period of the Portfolio's
operations, whichever is shorter. Certain information reflects financial results
for a single Portfolio share. The total returns in the table represent the rate
that an investor would have earned or lost on an investment in the Portfolio
(assuming reinvestment of all dividends and distributions). This information for
the Portfolio has been audited by PricewaterhouseCoopers LLP and other
independent accountants. PricewaterhouseCoopers LLP's report, along with the
Portfolio's financial statements, is incorporated by reference in the Statement
of Additional Information, which is available upon request.

<TABLE>
<CAPTION>
                                                                                                                MARCH 30
                                                                        YEAR ENDED DECEMBER 31,                    TO
                                                              -------------------------------------------     DECEMBER 31,
                                                              1999(A)      1998        1997        1996         1995(B)
- --------------------------------------------------------------------------------------------------------------------------
<S>                                                           <C>         <C>         <C>         <C>         <C>
NET ASSET VALUE, BEGINNING OF PERIOD                          $ 17.80     $ 16.22     $ 13.19     $ 11.63       $ 10.00
- --------------------------------------------------------------------------------------------------------------------------
Investment Operations:
  Net investment income                                          0.10        0.11        0.13        0.15          0.13
  Net realized and unrealized appreciation                       1.51        2.00        3.38        2.02          1.63
- --------------------------------------------------------------------------------------------------------------------------
Total from investment operations                                 1.61        2.11        3.51        2.17          1.76
- --------------------------------------------------------------------------------------------------------------------------
Distributions:
  From net investment income                                    (0.10)      (0.12)      (0.13)      (0.14)        (0.13)
  From net realized gains from investments                      (1.73)      (0.41)      (0.35)      (0.47)            -
  In excess of realized gains from investments                  (0.01)          -           -           -             -
- --------------------------------------------------------------------------------------------------------------------------
Total distributions                                             (1.84)      (0.53)      (0.48)      (0.61)        (0.13)
- --------------------------------------------------------------------------------------------------------------------------
Net increase (decrease) in net asset value                      (0.23)       1.58        3.03        1.56          1.63
- --------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD                                $ 17.57     $ 17.80     $ 16.22     $ 13.19       $ 11.63
- --------------------------------------------------------------------------------------------------------------------------
Total return                                                    9.13%      13.10%      26.80%      18.75%        22.75%(C)
RATIOS/SUPPLEMENTAL DATA:
  Net assets, end of period (000)                             $71,066     $59,560     $38,705     $ 8,603       $ 3,754
  Ratio of expenses to average net assets                       0.95%       0.95%       0.93%       0.85%         0.85%(C)
  Ratio of expenses to average net assets excluding
    waivers/reimbursements (D)                                  0.97%       1.02%       1.10%       2.27%         4.93%(C)
  Ratio of net investment income to average net assets          0.54%       0.69%       0.93%       1.35%         1.78%(C)
  Portfolio turnover                                           91.90%      43.20%      31.10%      46.80%        17.50%(C)
</TABLE>

(A) On March 31, 1999, the One Group Investment Trust Diversified Equity
Portfolio was substituted for the Pegasus Variable Growth and Value Fund.
Financial highlights for the period prior to March 31, 1999 represent the
Pegasus Variable Growth and Value Fund. (B) Commenced operations on March 30,
1995. (C) Annualized. (D) Ratios calculated as if no expenses were waived.
<PAGE>   43

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

                              FINANCIAL HIGHLIGHTS
                           Mid Cap Growth Portfolio

                                                                              41

The Financial Highlights table is intended to help you understand the
Portfolio's performance for the last five years or the period of the Portfolio's
operations, whichever is shorter. Certain information reflects financial results
for a single Portfolio share. The total returns in the table represent the rate
that an investor would have earned or lost on an investment in the Portfolio
(assuming reinvestment of all dividends and distributions). This information for
the Portfolio has been audited by PricewaterhouseCoopers LLP whose report, along
with the Portfolio's financial statements, is incorporated by reference in the
Statement of Additional Information, which is available upon request.

<TABLE>
<CAPTION>
                                                                               YEAR ENDED DECEMBER 31,
                                                              ---------------------------------------------------------
                                                                1999        1998        1997         1996        1995
- -----------------------------------------------------------------------------------------------------------------------
<S>                                                           <C>          <C>         <C>         <C>          <C>
NET ASSET VALUE, BEGINNING OF PERIOD                          $  18.52     $ 14.21     $ 12.11     $  11.52     $  9.70
- -----------------------------------------------------------------------------------------------------------------------
Investment Operations:
  Net investment income (loss)                                   (0.03)      (0.03)      (0.03)        0.18        0.04
  Net realized and unrealized appreciation                        4.73        5.95        3.63         1.62        2.29
- -----------------------------------------------------------------------------------------------------------------------
Total from investment operations                                  4.70        5.92        3.60         1.80        2.33
- -----------------------------------------------------------------------------------------------------------------------
Distributions:
  From net investment income                                         -           -           -        (0.19)      (0.04)
  From net realized gains from investments                       (2.67)      (1.38)      (1.48)       (0.78)      (0.47)
  In excess of realized gains from investments                       -       (0.03)          -        (0.24)          -
  Tax return of capital                                              -       (0.20)      (0.02)           -           -
- -----------------------------------------------------------------------------------------------------------------------
Total distributions                                              (2.67)      (1.61)      (1.50)       (1.21)      (0.51)
- -----------------------------------------------------------------------------------------------------------------------
Net increase in net asset value                                   2.03        4.31        2.10         0.59        1.82
- -----------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD                                $  20.55     $ 18.52     $ 14.21     $  12.11     $ 11.52
- -----------------------------------------------------------------------------------------------------------------------
Total return                                                    25.42%      38.82%      29.81%       15.67%      24.06%
RATIOS/SUPPLEMENTAL DATA:
  Net assets, end of period (000)                             $140,451     $92,674     $50,707     $ 22,339     $ 6,685
  Ratio of expenses to average net assets                        0.92%       0.97%       1.10%        1.06%       0.90%
  Ratio of expenses to average net assets excluding
    waivers/reimbursements(A)                                    0.92%       0.97%       1.11%        1.40%       2.78%
  Ratio of net investment income to average net assets          (0.21%)     (0.25%)     (0.25%)       1.85%       0.46%
  Ratio of net investment income to average net assets
    excluding waivers/reimbursements(A)                         (0.21%)     (0.25%)     (0.26%)       1.51%      (1.42%)
  Portfolio turnover                                           167.61%      87.70%     175.60%      326.90%     193.30%
</TABLE>

(A) Ratios calculated as if no expenses were waived.
<PAGE>   44

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

                              FINANCIAL HIGHLIGHTS
                           Diversified Mid Cap Portfolio

42

The Financial Highlights table is intended to help you understand the
Portfolio's performance for the last five years or the period of the Portfolio's
operations, whichever is shorter. Certain information reflects financial results
for a single Portfolio share. The total returns in the table represent the rate
that an investor would have earned or lost on an investment in the Portfolio
(assuming reinvestment of all dividends and distributions). This information for
the Portfolio has been audited by PricewaterhouseCoopers LLP and other
independent accountants. PricewaterhouseCoopers LLP's report, along with the
Portfolio's financial statements, is incorporated by reference in the Statement
of Additional Information, which is available upon request.

<TABLE>
<CAPTION>
                                                                        YEAR ENDED DECEMBER 31,               MARCH 30 TO
                                                              -------------------------------------------     DECEMBER 31,
                                                              1999(A)      1998        1997        1996         1995(B)
- --------------------------------------------------------------------------------------------------------------------------
<S>                                                           <C>         <C>         <C>         <C>         <C>
NET ASSET VALUE, BEGINNING OF PERIOD                          $ 14.76     $ 14.38     $ 13.46     $ 11.02       $ 10.00
- --------------------------------------------------------------------------------------------------------------------------
Investment Operations:
  Net investment income                                          0.03       (0.01)       0.01        0.03          0.05
  Net realized and unrealized appreciation                       1.50        0.70        3.55        2.67          1.02
- --------------------------------------------------------------------------------------------------------------------------
Total from investment operations                                 1.53        0.69        3.56        2.70          1.07
- --------------------------------------------------------------------------------------------------------------------------
Distributions:
  From net investment income                                    (0.02)          -       (0.01)      (0.03)        (0.05)
  From net realized gains from investments                      (1.09)      (0.31)      (2.63)      (0.23)            -
- --------------------------------------------------------------------------------------------------------------------------
Total distributions                                             (1.11)      (0.31)      (2.64)      (0.26)        (0.05)
- --------------------------------------------------------------------------------------------------------------------------
Net increase in net asset value                                  0.42        0.38        0.92        2.44          1.02
- --------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD                                $ 15.18     $ 14.76     $ 14.38     $ 13.46       $ 11.02
- --------------------------------------------------------------------------------------------------------------------------
Total return                                                   10.50%       4.91%      26.65%      24.53%        14.20%(C)
RATIOS/SUPPLEMENTAL DATA:
  Net assets, end of period (000)                             $21,625     $18,160     $11,668     $ 9,216       $ 4,972
  Ratio of expenses to average net assets                       0.92%       0.95%       0.91%       0.85%         0.85%(C)
  Ratio of expenses to average net assets excluding
    waivers/reimbursements (D)                                  1.03%       1.52%       1.49%       2.11%         4.64%(C)
  Ratio of net investment income to average net assets          0.26%      (0.10%)      0.04%       0.28%         0.67%(C)
  Portfolio turnover                                           58.77%      26.20%      80.70%      37.40%        32.10%(C)
</TABLE>

(A) On March 31, 1999, the One Group Investment Trust Diversified Mid Cap
Portfolio was substituted for the Pegasus Variable Mid-Cap Opportunity Fund.
Financial highlights for the period prior to March 31, 1999 represent the
Pegasus Variable Mid-Cap Opportunity Fund. (B) Commenced operations on March
30, 1995. (C) Annualized. (D) Ratio calculated as if no expenses were waived.
<PAGE>   45

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

                              FINANCIAL HIGHLIGHTS
                           Mid Cap Value Portfolio

                                                                              43

The Financial Highlights table is intended to help you understand the
Portfolio's performance for the last five years or the period of the Portfolio's
operations, whichever is shorter. Certain information reflects financial results
for a single Portfolio share. The total returns in the table represent the rate
that an investor would have earned or lost on an investment in the Portfolio
(assuming reinvestment of all dividends and distributions). This information for
the Portfolio has been audited by PricewaterhouseCoopers LLP and other
independent accountants. PricewaterhouseCoopers LLP's report, along with the
Portfolio's financial statements, is incorporated by reference in the Statement
of Additional Information, which is available upon request.

<TABLE>
<CAPTION>
                                                                                                 MAY 1
                                                                  YEAR ENDED                       TO
                                                                 DECEMBER 31,                 DECEMBER 31,
                                                                   1999(A)         1998         1997(B)
- ----------------------------------------------------------------------------------------------------------
<S>                                                              <C>              <C>         <C>
NET ASSET VALUE, BEGINNING OF PERIOD                               $  10.70       $ 11.53       $ 10.00
- ----------------------------------------------------------------------------------------------------------
Investment Operations:
  Net investment income                                                0.11          0.21          0.12
  Net realized and unrealized appreciation (depreciation)             (0.31)        (0.58)         1.57
- ----------------------------------------------------------------------------------------------------------
Total from investment operations                                      (0.20)        (0.37)         1.69
- ----------------------------------------------------------------------------------------------------------
Distributions:
  From net investment income                                          (0.11)        (0.21)        (0.12)
  From net realized gains from investments                                -         (0.20)        (0.04)
  In excess of realized gains from investments                            -         (0.05)            -
- ----------------------------------------------------------------------------------------------------------
Total distributions                                                   (0.11)        (0.46)        (0.16)
- ----------------------------------------------------------------------------------------------------------
Net increase (decrease) in net asset value                            (0.31)        (0.83)         1.53
- ----------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF PERIOD                                     $  10.39       $ 10.70       $ 11.53
- ----------------------------------------------------------------------------------------------------------
Total return                                                         (1.84%)       (3.31%)       25.26%(C)
RATIOS/SUPPLEMENTAL DATA:
  Net assets, end of period (000)                                  $ 28,489       $22,501       $13,926
  Ratio of expenses to average net assets                             0.95%         0.95%         0.95%(C)
  Ratio of expenses to average net assets excluding
    waivers/reimbursements(D)                                         1.02%         1.27%         1.22%(C)
  Ratio of net investment income to average net assets                1.90%         1.90%         1.83%(C)
  Portfolio turnover                                                198.01%        39.30%        19.60%(C)
</TABLE>

 (A) On March 31, 1999, the One Group Investment Trust Mid Cap Value
Portfolio was substituted for the Pegasus Variable Intrinsic Value Fund.
Financial highlights for the period prior to March 31, 1999 represent the
Pegasus Variable Intrinsic Value Fund. (B) Commenced operations on May 1,
1997. (C) Annualized. (D) Ratios calculated as if no expenses were waived.
<PAGE>   46

ONE GROUP(R)
INVESTMENT TRUST
- ---------------------------

44

                        Appendix A

                        --------------------------------------------------------
INVESTMENT
   PRACTICES            The Portfolios invest in a variety of securities and
                        employ a number of investment techniques. Each security
                        and technique involves certain risks. What follows is a
                        list of some of the securities and techniques which may
                        be utilized by the Portfolios, as well as the risks
                        inherent in their use. Equity securities are subject
                        mainly to market risk. Fixed income securities are
                        primarily influenced by market, credit and prepayment
                        risks, although certain securities may be subject to
                        additional risks. For a more complete discussion, see
                        the Statement of Additional Information. Following the
                        table is a more complete discussion of risk.

- ------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                          PORTFOLIO NAME                       PORTFOLIO CODE
                                      -----------------------------------------------------------------------
    <S>                               <C>                                                      <C>
                                                   One Group Investment Trust Bond Portfolio          1
                                       ----------------------------------------------------------------------
                                        One Group Investment Trust Government Bond Portfolio          2
                                       ----------------------------------------------------------------------
                                               One Group Investment Trust Balanced Portfolio          3
                                       ----------------------------------------------------------------------
                                         One Group Investment Trust Mid Cap Growth Portfolio          4
                                       ----------------------------------------------------------------------
                                       One Group Investment Trust Large Cap Growth Portfolio          5
                                       ----------------------------------------------------------------------
                                               One Group Investment Trust Diversified Equity
                                                                                   Portfolio          6
                                       ----------------------------------------------------------------------
                                           One Group Investment Trust Equity Index Portfolio          7
                                       ----------------------------------------------------------------------
                                              One Group Investment Trust Diversified Mid Cap
                                                                                   Portfolio          8
                                       ----------------------------------------------------------------------
                                          One Group Investment Trust Mid Cap Value Portfolio          9
                                       ----------------------------------------------------------------------
</TABLE>

<TABLE>
<CAPTION>
                                                                                             PORTFOLIO        RISK
                                      INSTRUMENT                                                CODE          TYPE
- ---------------------------------------------------------------------------------------------------------------------
<S>                                   <C>                                                   <C>            <C>
                                      U.S. Treasury Obligations: Bills, notes, bonds,       1-9            Market
                                      STRIPS,
                                      and CUBES.
                                      -------------------------------------------------------------------------------
                                      Treasury Receipts: TRS, TIGRs, and CATS.              1-9            Market
                                      -------------------------------------------------------------------------------
                                      U.S. Government Agency Securities: Securities         1-9            Market
                                      issued by agencies and instrumentalities of the                      Credit
                                      U.S. Government. These include Ginnie Mae, Fannie
                                      Mae, and Freddie Mac.
                                      -------------------------------------------------------------------------------
                                      Certificates of Deposit: Negotiable instruments       1, 3-9         Market
                                      with a stated maturity.                                              Credit
                                      -------------------------------------------------------------------------------
                                      Time Deposits: Non-negotiable receipts issued by a    1, 3-9         Liquidity
                                      bank in exchange for the deposit of funds.                           Credit
                                                                                                           Market
                                      -------------------------------------------------------------------------------
</TABLE>
<PAGE>   47

                                                                              45

<TABLE>
<CAPTION>
                                                                                             PORTFOLIO        RISK
                                      INSTRUMENT                                                CODE          TYPE
- ---------------------------------------------------------------------------------------------------------------------
<S>                                   <C>                                                   <C>            <C>
                                      Common Stock: Shares of ownership of a company.       3-9            Market
                                      -------------------------------------------------------------------------------
                                      Repurchase Agreements: The purchase of a security     1-9            Credit
                                      and the simultaneous commitment to return the                        Market
                                      security to the seller at an agreed upon price on                    Liquidity
                                      an agreed upon date. This is treated as a loan.
                                      -------------------------------------------------------------------------------
                                      Reverse Repurchase Agreement: The sale of a           1-9            Market
                                      security and the simultaneous commitment to buy                      Leverage
                                      the security back at an agreed upon price on an
                                      agreed upon date. This is treated as a borrowing
                                      by a Portfolio.
                                      -------------------------------------------------------------------------------
                                      Securities Lending: The lending of up to 33 1/3%      1-9            Credit
                                      of the Portfolio's total assets. In return the                       Market
                                      Portfolio will receive cash, other securities,                       Leverage
                                      and/or letters of credit as collateral.
                                      -------------------------------------------------------------------------------
                                      When-Issued Securities and Forward Commitments:       1-9            Market
                                      Purchase or contract to purchase securities at a                     Leverage
                                      fixed price for delivery at a future date.                           Liquidity
                                                                                                           Credit
                                      -------------------------------------------------------------------------------
                                      Investment Company Securities: Shares of other        1-9            Market
                                      mutual funds, including money market funds of One
                                      Group Mutual Funds and shares of other money
                                      market funds for which Banc One Investment
                                      Advisors or its affiliates serve as investment
                                      advisor or administrator. Banc One Investment
                                      Advisors will waive certain fees when investing in
                                      funds for which it serves as investment advisor.
                                      -------------------------------------------------------------------------------
                                      Convertible Securities: Bonds or preferred stock      1, 3-9         Market
                                      that can convert to common stock.                                    Credit
                                      -------------------------------------------------------------------------------
                                      Call and Put Options: A call option gives the         1-9            Management
                                      buyer the right to buy, and obligates the seller                     Liquidity
                                      of the option to sell, a security at a specified                     Credit
                                      price at a future date. A put option gives the                       Market
                                      buyer the right to sell, and obligates the seller                    Leverage
                                      of the option to buy, a security at a specified
                                      price at a future date. The Portfolios will sell
                                      only covered call and secured put options.
                                      -------------------------------------------------------------------------------
</TABLE>
<PAGE>   48

46

<TABLE>
<CAPTION>
                                                                                             PORTFOLIO        RISK
                                      INSTRUMENT                                                CODE          TYPE
- ---------------------------------------------------------------------------------------------------------------------
<S>                                   <C>                                                   <C>            <C>
                                      Futures and Related Options: A contract providing     1-9            Management
                                      for the future sale and purchase of a specified                      Market
                                      amount of a specified security, class of                             Credit
                                      securities, or an index at a specified time in the                   Liquidity
                                      future and at a specified price.                                     Leverage
                                      -------------------------------------------------------------------------------
                                      Real Estate Investment Trusts ("REITs"): Pooled       3-9            Liquidity
                                      investment vehicles which invest primarily in                        Management
                                      income producing real estate or real estate                          Market
                                      related loans or interest.                                           Regulatory
                                                                                                           Tax
                                                                                                           Prepayment
                                      -------------------------------------------------------------------------------
                                      Bankers' Acceptances: Bills of exchange or time       1, 3-9         Credit
                                      drafts drawn on and accepted by a commercial bank.                   Liquidity
                                      Maturities are generally six months or less.                         Market
                                      -------------------------------------------------------------------------------
                                      Commercial Paper: Secured and unsecured short-term    1, 3-9         Credit
                                      promissory notes issued by corporations and other                    Liquidity
                                      entities. Maturities generally vary from a few                       Market
                                      days to nine months.
                                      -------------------------------------------------------------------------------
                                      Foreign Securities: Stocks issued by foreign          1, 3-9         Market
                                      companies, as well as commercial paper of foreign                    Political
                                      issuers and obligations of foreign banks, overseas                   Liquidity
                                      branches of U.S. banks and supranational entities.                   Foreign
                                      The Equity Portfolios may also invest in American                    Investment
                                      Depositary Receipts, Global Depositary Receipts,
                                      and American Depositary Securities.
                                      -------------------------------------------------------------------------------
                                      Restricted Securities: Securities not registered      1-9            Liquidity
                                      under the Securities Act of 1933, such as                            Market
                                      privately placed commercial paper and Rule 144A
                                      securities.
                                      -------------------------------------------------------------------------------
                                      Variable and Floating Rate Instruments:               1, 3-9         Credit
                                      Obligations with interest rates which are reset                      Liquidity
                                      daily, weekly, quarterly or some other period and                    Market
                                      which may be payable to the Portfolio on demand.
                                      -------------------------------------------------------------------------------
                                      Warrants: Securities, typically issued with           3-8            Market
                                      preferred stock or bonds, that give the holder the                   Credit
                                      right to buy a proportionate amount of common
                                      stock at a specified price.
                                      -------------------------------------------------------------------------------
                                      Preferred Stock: A class of stock that generally      1, 3-9         Market
                                      pays a dividend at a specified rate and has
                                      preference over common stock in the payment of
                                      dividends and in liquidation.
                                      -------------------------------------------------------------------------------
</TABLE>
<PAGE>   49

                                                                              47

<TABLE>
<CAPTION>
                                                                                             PORTFOLIO        RISK
                                      INSTRUMENT                                                CODE          TYPE
- ---------------------------------------------------------------------------------------------------------------------
<S>                                   <C>                                                   <C>            <C>
                                      Mortgage-Backed Securities: Debt obligations          1-3, 8         Prepayment
                                      secured by real estate loans and pools of loans.                     Market
                                      These include collateralized mortgage obligations                    Credit
                                      ("CMOs") and Real Estate Mortgage Investment
                                      Conduits ("REMICs").
                                      -------------------------------------------------------------------------------
                                      Corporate Debt Securities: Corporate bonds and        1, 3, 5        Market
                                      non-convertible debt securities.                                     Credit
                                      -------------------------------------------------------------------------------
                                      Demand Features: Securities that are subject to       1, 3, 5        Market
                                      puts and standby commitments to purchase the                         Liquidity
                                      securities at a fixed price (usually with accrued                    Management
                                      interest) within a fixed period of time following
                                      demand by a Portfolio.
                                      -------------------------------------------------------------------------------
                                      Asset-Backed Securities: Securities secured by        1, 3, 8        Prepayment
                                      company receivables, home equity loans, truck and                    Market
                                      auto loans, leases, credit card receivables and                      Credit
                                      other securities backed by other types of                            Regulatory
                                      receivables or other assets.
                                      -------------------------------------------------------------------------------
                                      Mortgage Dollar Rolls: A transaction in which a       1-3, 8         Prepayment
                                      Portfolio sells securities for delivery in a                         Market
                                      current month and simultaneously contracts with                      Regulatory
                                      the same party to repurchase similar but not
                                      identical securities on a specified future date.
                                      -------------------------------------------------------------------------------
                                      Adjustable Rate Mortgage Loans ("ARMs"): Loans in     1-3            Prepayment
                                      a mortgage pool which provide for a fixed initial                    Market
                                      mortgage interest rate for a specified period of                     Credit
                                      time, after which the rate may be subject to                         Regulatory
                                      periodic adjustments.
                                      -------------------------------------------------------------------------------
                                      Swaps, Caps and Floors: A Portfolio may enter into    1-9            Management
                                      these transactions to manage its exposure to                         Credit
                                      changing interest rates and other factors. Swaps                     Liquidity
                                      involve an exchange of obligations by two parties.                   Market
                                      Caps and floors entitle a purchaser to a principal
                                      amount from the seller of the cap or floor to the
                                      extent that a specified index exceeds or falls
                                      below a predetermined interest rate or amount.
                                      -------------------------------------------------------------------------------
                                      New Financial Products: New options and futures       1-9            Management
                                      contracts and other financial products continue to                   Credit
                                      be developed and the Portfolios may invest in such                   Market
                                      options, contracts and products.                                     Liquidity
                                      -------------------------------------------------------------------------------
</TABLE>
<PAGE>   50

48

<TABLE>
<CAPTION>
                                                                                             PORTFOLIO        RISK
                                      INSTRUMENT                                                CODE          TYPE
- ---------------------------------------------------------------------------------------------------------------------
<S>                                   <C>                                                   <C>            <C>
                                      Structured Instruments: Debt securities issued by     1-9            Market
                                      agencies and instrumentalities of the U.S.                           Liquidity
                                      government, banks, municipalities, corporations                      Management
                                      and other businesses whose interest and/or                           Credit
                                      principal payments are indexed to foreign currency                   Foreign
                                      exchange rates, interest rates, or one or more                       Investment
                                      other referenced indices.
                                      -------------------------------------------------------------------------------
                                      Municipal Securities: Securities issued by a state    1-3            Market
                                      or political subdivision to obtain funds for                         Credit
                                      various public purposes. Municipal securities                        Political
                                      include private activity bonds and industrial                        Tax
                                      development bonds, as well as General Obligation
                                      Notes, Tax Anticipation Notes, Bond Anticipation
                                      Notes, Revenue Anticipation Notes, Project Notes,
                                      other short-term tax-exempt obligations, municipal
                                      leases, and obligations of municipal housing
                                      authorities and single family revenue bonds.
                                      -------------------------------------------------------------------------------
                                      Index Shares: Ownership interests in unit             3-9            Market
                                      investment trusts and other pooled investment
                                      vehicles that hold a portfolio of securities or
                                      stocks designed to track the price performance and
                                      dividend yield of a particular index such as
                                      Standard & Poor's Depository Receipts ("SPDRs")
                                      and Nasdaq 100's. The Equity Index Portfolio
                                      invests only in SPDRs.
                                      -------------------------------------------------------------------------------
                                      Obligations of Supranational Agencies: Obligations    3, 8           Credit
                                      of supranational agencies which are chartered to                     Foreign
                                      promote economic development and are supported by                    Investment
                                      various governments and governmental agencies.
                                      -------------------------------------------------------------------------------
                                      Zero-Coupon Debt Securities: Bonds and other debt     1-3, 8         Credit
                                      that pay no interest, but are issued at a discount                   Market
                                      from their value at maturity. When held to                           Zero
                                      maturity, their entire return equals the                             Coupon
                                      difference between their issue price and their
                                      maturity value.
                                      -------------------------------------------------------------------------------
                                      Zero-Fixed-Coupon Debt Securities: Zero coupon        1-3, 8         Credit
                                      debt securities which convert on a specified date                    Market
                                      to interest bearing debt securities.                                 Zero
                                                                                                           Coupon
                                      -------------------------------------------------------------------------------
                                      Stripped Mortgage-Backed Securities: Derivative       1-3            Prepayment
                                      multi-class mortgage securities which are usually                    Market
                                      structured with two classes of shares that receive                   Credit
                                      different proportions of the interest and                            Regulatory
                                      principal from a pool of mortgage assets. These
                                      include IOs and POs.
                                      -------------------------------------------------------------------------------
</TABLE>
<PAGE>   51

                                                                              49

<TABLE>
<CAPTION>
                                                                                             PORTFOLIO        RISK
                                      INSTRUMENT                                                CODE          TYPE
- ---------------------------------------------------------------------------------------------------------------------
<S>                                   <C>                                                   <C>            <C>
                                      Inverse Floating Rate Instruments: Floating rate      1-3            Market
                                      debt instruments with interest rates that reset in                   Leverage
                                      the opposite direction from the market rate of                       Credit
                                      interest to which the inverse floater is indexed.
                                      -------------------------------------------------------------------------------
                                      Loan Participations and Assignments:                  1, 3           Credit
                                      Participations in, or assignments of all or a                        Political
                                      portion of loans to corporations or to                               Liquidity
                                      governments, including governments of the less                       Foreign
                                      developed countries ("LDCs").                                        Investment
                                                                                                           Market
                                      -------------------------------------------------------------------------------
                                      Fixed Rate Mortgage Loans: Investments in fixed       1-3            Credit
                                      rate mortgage loans or mortgage pools which bear                     Prepayment
                                      simple interest at fixed annual rates and have                       Regulatory
                                      original terms ranging from 5 to 40 years.                           Market
                                      -------------------------------------------------------------------------------
                                      Short-Term Funding Agreements: Funding agreements     1, 3           Credit
                                      issued by banks and highly rated U.S. insurance                      Liquidity
                                      companies such as Guaranteed Investment Contracts                    Market
                                      ("GICs") and Bank Investment Contracts ("BICs").
</TABLE>

- --------------------------------------------------------------------------------
INVESTMENT RISKS        Below is a more complete discussion of the types of
                        risks inherent in the securities and investment
                        techniques listed above. Because of these risks, the
                        value of the securities held by the Portfolios may
                        fluctuate, as will the value of your investment in the
                        Portfolios. Certain investments are more susceptible to
                        these risks than others.

                        - Credit Risk. The risk that the issuer of a security,
                          or the counterparty to a contract, will default or
                          otherwise become unable to honor a financial
                          obligation. Credit risk is generally higher for
                          non-investment grade securities. The price of a
                          security can be adversely affected prior to actual
                          default as its credit status deteriorates and the
                          probability of default rises.

                        - Leverage Risk. The risk associated with securities or
                          practices that multiply small index or market
                          movements into large changes in value. Leverage is
                          often associated with investments in derivatives, but
                          also may be embedded directly in the characteristics
                          of other securities.

                           Hedged. When a derivative (a security whose value is
                           based on another security or index) is used as a
                           hedge against an opposite position that the Portfolio
                           also holds, any loss generated by the derivative
                           should be substantially offset by gains on the hedged
                           investment, and vice versa. While hedging can reduce
                           or eliminate losses, it can also reduce or eliminate
                           gains. Hedges are sometimes subject to imperfect
                           matching between the derivative and underlying
                           security, and there can be no assurance that a
                           Portfolio's hedging transactions will be effective.
<PAGE>   52

50

                           Speculative. To the extent that a derivative is not
                           used as a hedge, the Portfolio is directly exposed to
                           the risks of that derivative. Gains or losses from
                           speculative positions in a derivative may be
                           substantially greater than the derivative's original
                           cost.

                        - Liquidity Risk. The risk that certain securities may
                          be difficult or impossible to sell at the time and the
                          price that would normally prevail in the market. The
                          seller may have to lower the price, sell other
                          securities instead or forego an investment
                          opportunity, any of which could have a negative effect
                          on Portfolio management or performance. This includes
                          the risk of missing out on an investment opportunity
                          because the assets necessary to take advantage of it
                          are tied up in less advantageous investments.

                        - Management Risk. The risk that a strategy used by a
                          Portfolio's management may fail to produce the
                          intended result. This includes the risk that changes
                          in the value of a hedging instrument will not match
                          those of the asset being hedged. Incomplete matching
                          can result in unanticipated risks.

                        - Market Risk. The risk that the market value of a
                          security may move up and down, sometimes rapidly and
                          unpredictably. These fluctuations may cause a security
                          to be worth less than the price originally paid for
                          it, or 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. There
                          is also the risk that the current interest rate may
                          not accurately reflect existing market rates. For
                          fixed income securities, market risk is largely, but
                          not exclusively, influenced by changes in interest
                          rates. A rise in interest rates typically causes a
                          fall in values, while a fall in rates typically causes
                          a rise in values. Finally, key information about a
                          security or market may be inaccurate or unavailable.
                          This is particularly relevant to investments in
                          foreign securities.

                        - Political Risk. The risk of losses attributable to
                          unfavorable governmental or political actions, seizure
                          of foreign deposits, changes in tax or trade statutes,
                          and governmental collapse and war.

                        - Foreign Investment Risk. The risk associated with
                          higher transaction costs, delayed settlements,
                          currency controls and adverse economic developments.
                          This also includes the risk that fluctuations in the
                          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. Exchange rate
                          volatility also may affect the ability of an issuer to
                          repay U.S. dollar denominated debt, thereby increasing
                          credit risk.

                        - Prepayment Risk. The risk that the principal repayment
                          of a security will occur at an unexpected time,
                          especially that the repayment of a mortgage or
                          asset-backed security occurs either significantly
                          sooner or later than expected. Changes in prepayment
                          rates can result in greater price and yield
                          volatility. Prepayments generally accelerate when
                          interest rates decline. When mortgage and other
                          obligations are prepaid, a Portfolio may have to
                          reinvest in securities with a lower yield. Further,
                          with early prepayment, a Portfolio may fail to recover
                          any premium paid, resulting in an unexpected capital
                          loss.
<PAGE>   53

                                                                              51

                        - Tax Risk. The risk that the issuer of the securities
                          will fail to comply with certain requirements of the
                          Internal Revenue Code, which could cause adverse tax
                          consequences.

                        - Regulatory Risk. The risk associated with Federal and
                          state laws which may restrict the remedies that a
                          lender has when a borrower defaults on loans. These
                          laws include restrictions on foreclosures, redemption
                          rights after foreclosure, Federal and state bankruptcy
                          and debtor relief laws, restrictions on "due on sale"
                          clauses, and state usury laws.

                        - Zero Coupon Risk. The market prices of securities
                          structured as zero coupon or pay-in-kind securities
                          are generally affected to a greater extent by interest
                          rate changes. These securities tend to be more
                          volatile than securities which pay interest
                          periodically.
<PAGE>   54

                           (Intentionally Left Blank)
<PAGE>   55

                           (Intentionally Left Blank)
<PAGE>   56

- --------------------------------------------------------------------------------
                        If you want more information about the Portfolios, the
                        following documents are free upon request:

                        ANNUAL/SEMI-ANNUAL REPORTS: Additional information about
                        the Portfolios' investments is available in the
                        Portfolios' annual and semi-annual reports to
                        shareholders. In each Portfolio's annual report, you
                        will find a discussion of the market conditions and
                        investment strategies that significantly affected the
                        Portfolio's performance during its last fiscal year.

                        STATEMENT OF ADDITIONAL INFORMATION ("SAI"): The SAI
                        provides more detailed information about the Portfolios
                        and is incorporated into this prospectus by reference.

                        HOW CAN I GET MORE INFORMATION? You can get a free copy
                        of the semi-annual/ annual reports or the SAI, request
                        other information or discuss your questions about the
                        Portfolios by calling 1 800-480-4111 or by writing the
                        Portfolios at:

                        ONE GROUP(R) INVESTMENT TRUST
                        1111 POLARIS PARKWAY, SUITE B-2
                        COLUMBUS, OHIO 43271-0211

                        You can also review and copy the Portfolios' reports and
                        the SAI at the Public Reference Room of the Securities
                        and Exchange Commission ("SEC"). (For information about
                        the SEC's Public Reference Room call 1-202-942-8090).
                        You can also get reports and other information about the
                        Portfolios from the EDGAR Database on the SEC's web site
                        at http://www.sec.gov. Copies of this information may be
                        obtained, after paying a copying charge, by electronic
                        request at the following E-mail address:
                        [email protected] or by writing the Public Reference
                        Section of the SEC, Washington, D.C. 20549-6009.

                        VARIABLE ANNUITY AND LIFE INSURANCE CONTRACTS: This
                        prospectus is for use with variable life insurance
                        contracts and variable annuity contracts. All questions
                        regarding variable annuity contracts or variable life
                        insurance contracts should be directed to the address or
                        phone numbers in the prospectus or other materials that
                        you received when you purchased your variable annuity or
                        variable life product.

                        (Investment Company Act File No. 811-7874)

<PAGE>   57
                       STATEMENT OF ADDITIONAL INFORMATION

                          ONE GROUP(R)INVESTMENT TRUST

        ONE GROUP INVESTMENT TRUST BOND PORTFOLIO (THE "BOND PORTFOLIO")

   ONE GROUP INVESTMENT TRUST GOVERNMENT BOND PORTFOLIO (THE "GOVERNMENT BOND
                                   PORTFOLIO")

    ONE GROUP INVESTMENT TRUST BALANCED PORTFOLIO (THE "BALANCED PORTFOLIO")

  ONE GROUP INVESTMENT TRUST LARGE CAP GROWTH PORTFOLIO (THE "LARGE CAP GROWTH
                                   PORTFOLIO")

      ONE GROUP INVESTMENT TRUST EQUITY INDEX PORTFOLIO (THE "EQUITY INDEX
                                   PORTFOLIO")

             ONE GROUP INVESTMENT TRUST DIVERSIFIED EQUITY PORTFOLIO
                      (THE "DIVERSIFIED EQUITY PORTFOLIO")

            ONE GROUP INVESTMENT TRUST DIVERSIFIED MID CAP PORTFOLIO
                      (THE "DIVERSIFIED MID CAP PORTFOLIO")

    ONE GROUP INVESTMENT TRUST MID CAP GROWTH PORTFOLIO (THE "MID CAP GROWTH
                                   PORTFOLIO")

               ONE GROUP INVESTMENT TRUST MID CAP VALUE PORTFOLIO
                         (THE "MID CAP VALUE PORTFOLIO")

             (EACH A "PORTFOLIO," AND COLLECTIVELY THE "PORTFOLIOS")

                                   May 1, 2000

         This Statement of Additional Information is not a Prospectus, but
supplements and should be read with the Prospectus dated May 1, 2000 for the
Portfolios (the "Prospectus"). This Statement of Additional Information is
incorporated in its entirety into the Prospectus. The Annual Report for the
Portfolios for the fiscal year ended December 31, 1999 is incorporated by
reference into this Statement of Additional Information. A copy of the Annual
Report and the Prospectus are available without charge by writing to One Group
Investment Trust (the "Trust") at 1111 Polaris Parkway, P.O. Box 710211,
Columbus, Ohio 43271-0211 or by calling toll free at 1-800-480-4111.

<PAGE>   58

<TABLE>
<S>                                                                                                                  <C>
                                                                                                                     PAGE

THE TRUST...........................................................................................................   1
INVESTMENT OBJECTIVES AND POLICIES..................................................................................   3
Additional Information on Portfolio Investments.....................................................................   3
      Asset-Backed Securities.......................................................................................   3
      Bank Obligations..............................................................................................   3
      Commercial Paper..............................................................................................   4
      Common Stock..................................................................................................   4
      Convertible Securities........................................................................................   4
      Demand Features...............................................................................................   4
      Foreign Investments...........................................................................................   5
      Risk Factors of Foreign Investments...........................................................................   5
      Futures and Options Trading...................................................................................   5
        Futures Contracts...........................................................................................   6
        Limitations on the Use of Futures Contracts.................................................................   7
        Risk Factors in Futures Transactions........................................................................   8
        Options Contracts...........................................................................................   9
        Writing (Selling) Covered Calls.............................................................................   9
        Purchasing Call Options.....................................................................................  11
        Purchasing Put Options......................................................................................  11
        Secured Puts................................................................................................  11
        Straddles and Spreads.......................................................................................  11
        Risk Factors in Options Transactions........................................................................  11
        Limitations on the Use of Options...........................................................................  12
      Government Securities.........................................................................................  12
      High Yield/High Risk Securities/Junk Bonds....................................................................  13
      Index Shares..................................................................................................  14
      Investment Company Securities.................................................................................  14
      Loan Participations and Assignments...........................................................................  14
      Mortgage-Related Securities...................................................................................  15
        Mortgage-Backed Securities (CMOs and REMICs)................................................................  15
        Mortgage Dollar Rolls.......................................................................................  16
        Stripped Mortgage Backed Securities.........................................................................  17
        Adjustable Rate Mortgage Loans..............................................................................  17
        Risk Factors of Mortgage-Related Securities.................................................................  18
      Municipal Securities..........................................................................................  20
        Risk Factors in Municipal Securities........................................................................  22
        Limitations on the use of Municipal Securities..............................................................  23
      New Financial Products........................................................................................  23
      PERCs.........................................................................................................  23
      Preferred Stock...............................................................................................  23
      Real Estate Investment Trusts ("REITs").......................................................................  24
      Repurchase Agreements.........................................................................................  24
      Reverse Repurchase Agreements.................................................................................  25
      Restricted Securities.........................................................................................  25
      Securities Lending............................................................................................  26
      Short-term Funding Agreements.................................................................................  26
      Structured Instruments........................................................................................  27
      Swaps, Caps and Floors........................................................................................  28
      Treasury Receipts.............................................................................................  30
      U.S. Treasury Obligations.....................................................................................  30
</TABLE>



                                       i

<PAGE>   59

<TABLE>
<S>                                                                                                                  <C>
                                                                                                                     PAGE

      Variable and Floating Rate Instruments........................................................................  30
   Limitations on the Use of Variable and Floating Rate Notes.......................................................  30
   Warrants.........................................................................................................  31
   When-Issued Securities and Forward Commitments ..................................................................  31
Investment Restrictions.............................................................................................  32
Portfolio Turnover..................................................................................................  33
Additional Tax Information Concerning the Portfolios................................................................  34
VALUATION. .........................................................................................................  36
Valuation of the Portfolios.........................................................................................  36
Additional Information Regarding the Calculation of Per Share Net Asset Value.......................................  36
Additional Purchase and Redemption Information......................................................................  37
Dividends...........................................................................................................  37
MANAGEMENT OF THE TRUST.............................................................................................  37
Trustees & Officers.................................................................................................  37
Investment Advisor..................................................................................................  41
Codes of Ethics.....................................................................................................  44
Portfolio Transactions..............................................................................................  46
Administrator.......................................................................................................  47
Sub-Administrators..................................................................................................  50
Custodian, Sub-Custodian, and Transfer Agent........................................................................  50
Experts    .........................................................................................................  51
ADDITIONAL INFORMATION..............................................................................................  52
Description of Shares...............................................................................................  52
Shareholder and Trustee Liability...................................................................................  53
Shareholders........................................................................................................  53
Calculation of Performance Data.....................................................................................  56
Administrative Services Plan........................................................................................  57
Miscellaneous.......................................................................................................  58

FINANCIAL STATEMENTS................................................................................................  60



Appendix A - Description of Ratings
Appendix B - Investment Practices
</TABLE>



                                       ii
<PAGE>   60



                                    THE TRUST

One Group Investment Trust (formerly called The One Group Investment Trust) (the
"Trust") is an open-end management investment company. The Trust was formed as a
Massachusetts business trust on June 7, 1993. The Trust consists of nine series
of units of beneficial interest ("Shares") each representing interests in one of
the following separate investment portfolios:

         1.      Bond Portfolio (formerly called the Bond Fund)
         2.      Government Bond Portfolio (formerly called the Government Bond
                 Fund)
         3.      Balanced Portfolio (formerly called the Asset Allocation Fund)
         4.      Mid Cap Growth Portfolio (formerly called the Growth
                 Opportunities Fund)
         5.      Large Cap Growth Portfolio (formerly called the Large Company
                 Growth Fund)
         6.      Equity Index Portfolio (formerly called the Equity Index Fund)
         7.      Diversified Equity Portfolio (formerly called the Value Growth
                 Fund)
         8.      Diversified Mid Cap Portfolio (formerly called the Mid Cap
                 Opportunities Fund)
         9.      Mid Cap Value Portfolio (formerly called the Mid Cap Value
                 Fund)

For ease of reference, this Statement of Additional Information sometimes refers
to the Portfolios as the BOND PORTFOLIOS and the EQUITY PORTFOLIOS.


The BOND PORTFOLIOS include:

         1.      Bond Portfolio and

         2.      Government Bond Portfolio.

The EQUITY PORTFOLIOS include:

         1.      Balanced Portfolio,
         2.      Mid Cap Growth Portfolio,
         3.      Large Cap Growth Portfolio,
         4.      Equity Index Portfolio,
         5.      Diversified Equity Portfolio,
         6.      Diversified Mid Cap Portfolio, and
         7.      Mid Cap Value Portfolio.

All of the Portfolios are diversified, as defined under the Investment Company
Act of 1940, as amended, (the "1940 Act").
SUBSTITUTION OF ONE GROUP INVESTMENT TRUST PORTFOLIOS FOR PEGASUS VARIABLE
FUNDS. On March 31, 1999, the following portfolios of the Trust were substituted
for the following Pegasus Variable Funds in separate accounts maintained by
Hartford Life and Annuity Insurance Company:
ONE GROUP INVESTMENT TRUST PORTFOLIO         PEGASUS VARIABLE FUND

1.  Bond Portfolio                           1.   Bond Fund
2.  Large Cap Growth Portfolio               2.   Growth Fund
3.  Diversified Mid Cap Portfolio            3.   Mid-Cap Opportunity Fund
4.  Mid Cap Value Portfolio                  4.   Intrinsic Value Fund
5.  Diversified Equity Portfolio             5.   Growth and Value Fund

                                       1
<PAGE>   61



With the exception of the Large Cap Growth Portfolio, the Pegasus Variable Funds
are the surviving funds for accounting purposes. The Pegasus Variable Bond Fund,
the Pegasus Variable Mid-Cap Opportunity Fund, the Pegasus Variable Intrinsic
Value Fund, and the Pegasus Variable Growth and Value Fund are referred to as
the "Predecessor Funds" in this Statement of Additional Information. Individual
Predecessor Funds are identified in this Statement of Additional Information by
reference to the applicable One Group Investment Trust Portfolio. Much of the
information in this Statement of Additional Information expands upon subjects
discussed in the Prospectus. You should not invest in the Portfolios without
first reading the Prospectus.


                                       2
<PAGE>   62



                       INVESTMENT OBJECTIVES AND POLICIES
The following policies supplement each Portfolio's investment objective and
policies as described in the Prospectus. Additional details about each
Portfolio's investment objectives and policies are contained in Appendix B
to this Statement of Additional Information and in the Prospectus under "Fund
Summary: Investments, Risk & Performance," "More About the Portfolios" and
Appendix A - Investment Practices.
ADDITIONAL INFORMATION ON PORTFOLIO INVESTMENTS

ASSET-BACKED SECURITIES

Asset-backed securities include securities secured by company receivables, home
equity loans, truck and auto loans, leases, or credit card receivables.
Asset-Backed Securities also include other securities backed by other types of
receivables or other assets. These securities are generally pass-through
securities, which means that principal and interest payments on the underlying
securities (less servicing fees) are passed through to shareholders on a pro
rata basis.
Prepayment Risks. The issuers of asset-backed securities may be able to repay
principal in advance if interest rates fall. Also, the underlying assets (for
example, the underlying credit card debt) may be refinanced or paid off prior to
maturity during periods of declining interest rates. If asset-backed securities
are pre-paid, a Portfolio may have to reinvest the proceeds from these
securities at a lower rate. In addition, potential market gains on a security
subject to prepayment risk may be more limited than potential market gains on a
comparable security that is not subject to prepayment risk. Under certain
prepayment rate scenarios, a Portfolio may fail to recover additional amounts
paid (i.e., premiums) for securities with higher interest rates, resulting in
an unexpected loss.
BANK OBLIGATIONS

Bank obligations include bankers' acceptances, certificates of deposit, and time
deposits. The Portfolios (other than the Government Bond Portfolio) may invest
in bank obligations.

Bankers' Acceptances are negotiable drafts or bills of exchange typically drawn
by an importer or exporter to pay for specific merchandise. These drafts are
"accepted" by a bank, meaning, in effect, that the bank unconditionally agrees
to pay the face value of the instrument on maturity. To be eligible for purchase
by a Portfolio, a bankers' acceptance must be guaranteed by domestic and foreign
banks and savings and loan associations having, at the time of investment, total
assets in excess of $1 billion (as of the date of their most recently published
financial statements).

Certificates of Deposit are negotiable certificates issued against funds
deposited in a commercial bank or a savings and loan association for a definite
period of time and earning a specified return. To be eligible for investment, a
certificate of deposit must be issued by domestic and foreign branches of U.S.
commercial banks which are members of the Federal Reserve System or the deposits
of which are insured by the Federal Deposit Insurance Corporation, and in
certificates of deposit of domestic savings and loan associations the deposits
of which are insured by the Federal Deposit Insurance Corporation if, at the
time of purchase, such institutions have total assets in excess of $1 billion
(as of the date of their most recently published financial statements).
Certificates of deposit may also include those issued by foreign banks outside
the United States with total assets at the time of purchase in excess of the
equivalent of $1 billion.

The Portfolios may also invest in Eurodollar certificates of deposit. Eurodollar
certificates of deposit are U.S. dollar-denominated certificates of deposit
issued by branches of foreign and domestic banks located outside the United
States. The Portfolios may also invest in Yankee Certificates of Deposit. Yankee
Certificates of Deposits are certificates of deposit issued by a U.S. branch of
a foreign bank denominated in U.S. dollars and held in the United States. The
Portfolios may also invest in obligations (including banker's acceptances and
certificates of deposit) denominated in foreign currencies (see "Foreign
Investments").

Time Deposits are interest-bearing non-negotiable deposits at a bank or a
savings and loan association that have a specific maturity date. A time deposit
earns a specific rate of interest over a definite period of time. Time deposits
cannot be traded on the secondary market. Time deposits that exceed seven days
and include a withdrawal penalty are considered to be illiquid. Demand Deposits
are funds deposited in a commercial bank or a savings and loan association
which, without prior notice to the bank, may be withdrawn generally by
negotiable draft. Time and demand deposits will be maintained only at banks or
savings and loan associations from which a Portfolio could purchase certificates
of deposit.



                                       3
<PAGE>   63

COMMERCIAL PAPER
Commercial paper consists of promissory notes issued by corporations. Although
these notes are generally unsecured, the Portfolios may also purchase secured
commercial paper. Except as noted below with respect to variable amount master
demand notes, issues of commercial paper normally have maturities of less than
nine months and fixed rates of return. The Portfolios only purchase commercial
paper that meet the following criteria.
          Bond Portfolio. The Bond Portfolio may purchase commercial paper
          consisting of issues rated at the time of purchase in the highest or
          second highest rating category by at least one Nationally Recognized
          Statistical Rating Organization ("NRSRO") (such as A-2 or better by
          Standard & Poor's Corporation ("S&P"), P-2 or better by Moody's
          Investors Service, Inc. ("Moody's") or F2 or better by Fitch IBCA
          ("Fitch")) or if unrated, determined by Banc One Investment Advisors
          Corporation ("Banc One Investment Advisors") to be of comparable
          quality.

          Equity Portfolios. The Equity Portfolios may purchase commercial paper
          consisting of issues rated at the time of purchase in the highest or
          second highest rating category by at least one NRSRO (such as A-2 or
          better by S&P, P-2 or better by Moody's or F2 or better by Fitch) or
          if unrated, determined by Banc One Investment Advisors to be of
          comparable quality.

COMMON STOCK

Common stock represents a share of ownership in a company and usually carries
voting rights and earns dividends. Unlike preferred stock, common stock
dividends are not fixed but are declared at the discretion of the issuer's board
of directors.

CONVERTIBLE SECURITIES

Convertible securities are similar to both fixed income and equity securities.
Convertible securities may be issued as bonds or preferred stock. Because of the
conversion feature, the market value of convertible securities tends to move
together with the market value of the underlying stock. As a result, the
Portfolios base selection of convertible securities, to a great extent, on the
potential for capital appreciation that may exist in the underlying stock. The
value of convertible securities is also affected by prevailing interest rates,
the credit quality of the issuer, and any call provisions.

DEMAND FEATURES

The Bond Portfolio, the Balanced Portfolio, and the Large Cap Growth Portfolio
may invest in securities that are subject to puts and standby commitments
("Demand Features"). A Demand Feature allows a Portfolio to sell securities at
their principal amount (usually with accrued interest) within a fixed period
(usually seven days) following a demand by the Portfolio. The Demand Feature may
be issued by the issuer of the underlying securities, a dealer in the securities
or by another third party, and may not be transferred separately from the
underlying security. The underlying securities subject to a put may be sold at
any time at market rates. The Portfolios expect that they will acquire puts only
where the puts are available without the payment of any direct or indirect
consideration. However, if advisable or necessary, a premium may be paid for put
features. A premium paid will reduce the yield otherwise payable on the
underlying security.

Under a "Stand-By Commitment," a dealer agrees to purchase, at a Portfolio's
option, specified securities at a specified price. A Portfolio will acquire
these commitments only to aid portfolio liquidity and does not intend to
exercise the demand feature for trading purposes. Stand-by commitments may also
be referred to as put options. Each Portfolio will generally limit its
investments in stand-by commitments to 25% of its total assets.

The Portfolios engage in put transactions to maintain flexibility and liquidity,
to permit them to meet redemption requests and to remain as fully invested as
possible.


                                       4
<PAGE>   64

FOREIGN INVESTMENTS

Some of the Portfolios may invest in certain obligations or securities of
foreign issuers. Possible investments include equity securities of foreign
entities, obligations of foreign branches of U.S. banks and of foreign banks,
including, without limitation, Eurodollar Certificates of Deposit, Eurodollar
Time Deposits, Eurodollar Banker's Acceptances, Canadian Time Deposits and
Yankee Certificates of Deposits, and investments in Canadian Commercial Paper,
foreign securities and Europaper.
The Equity Portfolios may purchase sponsored and unsponsored American Depositary
Receipts ("ADRs"). Sponsored ADRs are listed on the New York Stock Exchange;
unsponsored ADRs are not. Therefore, there may be less information available
about the issuers of unsponsored ADRs than the issuers of sponsored ADRs.
Unsponsored ADRs are restricted securities.

RISK FACTORS OF FOREIGN INVESTMENTS

Political and Exchange Risks. Foreign investments involve investment risks that
differ in some respects from those related to investments in obligations of U.S.
domestic issuers. Such risks include future adverse political and economic
developments, the possible imposition of withholding taxes on interest or other
income, possible seizure, nationalization or expropriation of foreign deposits,
the possible establishment of exchange controls or taxation at the source,
greater fluctuations in value due to changes in exchange rates, or the adoption
of other foreign governmental restrictions which might adversely affect the
payment of principal and interest on such obligations.

Higher Transaction Costs. Foreign investments may entail higher custodial fees
and sales commissions than domestic investments.
Accounting and Regulatory Differences. Foreign issuers of securities or
obligations are often subject to accounting treatment and engage in business
practices different from those of domestic issuers of similar securities
or obligations. Foreign branches of U.S. banks and foreign banks are not
regulated by U.S. banking authorities and may be subject to less stringent
reserve requirements than those applicable to domestic branches of U.S. banks.
In addition, foreign banks generally are not bound by the accounting, auditing,
and financial reporting standards comparable to those applicable to U.S. banks.
Currency Risk. Foreign securities are typically denominated in foreign
currencies. The value of a Portfolio's investments in securities denominated in
foreign currencies will be affected by: (i) changes in currency exchange rates;
(ii) the relative strength of the foreign currencies and the U.S. dollar, and
(iii) exchange control regulations. Changes in the foreign currency exchange
rates also may affect the value of dividends and interest earned, gains and
losses realized on the sale of securities, and net investment income and gains.

Limitations on the Use of Foreign Investments. With respect to all Portfolios
other than the Balanced Portfolio, investments in all types of foreign
obligations or securities will not exceed 25% of the net assets of a Portfolio.
With respect to the Balanced Portfolio, up to 20% of the equity securities may
be foreign securities, including American Depositary Receipts.

FUTURES AND OPTIONS TRADING

The Portfolios may enter into futures contracts, options, options on futures
contracts and stock index futures contracts and options thereon for the purposes
of remaining fully invested, reducing transaction costs, or managing interest
rate risk.


                                       5
<PAGE>   65


FUTURES CONTRACTS

Futures contracts provide for the future sale by one party and purchase by
another party of a specified amount of a specific security, class of securities,
or an index at a specified future time and at a specified price. A stock index
futures contract is a bilateral agreement where two parties agree to take or
make delivery of an amount of cash equal to a specified dollar amount times the
difference between the stock index value at the close of trading of the
contracts and the price at which the futures contract is originally struck.
Futures contracts which are standardized as to maturity date and underlying
financial instrument are traded on national futures exchanges. Futures exchanges
and trading are regulated under the Commodity Exchange Act by the Commodity
Futures Trading Commission ("CFTC"), a U.S. government agency.

Although the terms of most futures contracts call for actual delivery and
acceptance of the underlying securities, in most cases the contracts are closed
out before the settlement date without the making or taking of delivery. Closing
out an open futures position is done by taking an opposite position ("buying" a
contract which has previously been "sold," or "selling" a contract previously
"purchased") in an identical contract to terminate the position. The acquisition
of put and call options on futures contracts will, respectively, give a
Portfolio the right (but not the obligation), for a specified price, to sell or
to purchase the underlying futures contract, upon exercise of the option, at any
time during the option period. Brokerage commissions are incurred when a futures
contract is bought or sold.

When making futures trades, the Portfolios are required to make a good faith
margin deposit in cash or government securities with a broker or custodian to
initiate and maintain open positions in futures contracts. A margin deposit is
intended to assure completion of the contract (delivery or acceptance of the
underlying security) if it is not terminated prior to the specified delivery
date. Minimal initial margin requirements are established by the futures
exchange and may be changed. Brokers may establish deposit requirements which
are higher than the exchange minimums. Initial margin deposits on futures
contracts are customarily set at levels much lower than the prices at which the
underlying securities are purchased and sold, typically ranging upward from less
than 5% of the value of the contract being traded.

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

Traders in futures contracts may be broadly classified as either "hedgers" or
"speculators." Hedgers use the futures markets primarily to offset unfavorable
changes in the value of securities otherwise held for investment purposes or
expected to be acquired by them. Speculators are less inclined to own the
securities underlying the futures contracts which they trade, and use futures
contracts with the expectation of realizing profits from fluctuations in the
prices of underlying securities. The Portfolios intend to enter into futures
contracts, options on futures contracts, index futures and options thereon that
are traded on an exchange regulated by the CFTC if, to the extent that these
futures and options are not for "bona fide hedging purposes" (as defined by the
CFTC), the aggregate initial margin and premiums on these positions (excluding
the amount by which options are in the money) do not exceed 5% of the
Portfolio's total assets at current value. A Portfolio, however, may invest more
than this amount for bona fide hedging purposes, and also may invest more than
that amount if it obtains authority to do so from the CFTC without rendering the
Portfolio a commodity pool operator or adversely affecting its status as an
investment company under Federal securities laws.

A Portfolio may buy and sell futures contracts and related options to manage its
exposure to changing interest rates and security prices. When interest rates are
expected to rise or market values of portfolio securities are expected to fall,
a Portfolio can seek through the sale of futures contracts to offset a decline
in the value of its portfolio securities. When interest rates are expected to
fall or market values are expected to rise, a Portfolio, through the purchase of
these contracts, can attempt to secure better rates or prices for the Portfolio
than might later be available in the market when it makes anticipated purchases.

Although techniques other than the sale and purchase of futures contracts could
be used to control the Portfolios' exposure to market fluctuations, the use of
futures contracts may be a more effective means of managing this exposure. While
the Portfolios will incur commission expenses in both opening and closing out
futures positions, these costs may be lower than transaction costs that would be
incurred in the purchase and sale of the underlying securities.


                                       6
<PAGE>   66


A Portfolio's ability to effectively use futures trading depends on several
factors. First, price correlation between the futures contracts and their
underlying reference security or index may not be perfect. Second, it is
possible that a lack of liquidity for futures contracts could exist in the
secondary market, resulting in an inability to close a futures position prior to
its maturity date. Third, the purchase of a futures contract involves the risk
that a Portfolio could lose more than the original margin deposit required to
initiate a futures transaction.

LIMITATIONS ON THE USE OF FUTURES CONTRACTS

Except for bona fide hedging purposes, none of the Portfolios will enter into
futures contract transactions if immediately after the transaction, the sum of
its initial margin deposits and premiums on open contracts exceeds 5% of the
market value of the respective Portfolio's total assets. None of the Portfolios
will enter into futures contracts if the value of the futures contracts held
would exceed 25% of the applicable Portfolio's total assets.

The Portfolios restrict their futures contract trading as follows:

1.   The Portfolios will not engage in transactions in futures contracts for
     speculative purposes;

2.   The Portfolios will not market themselves to the public as commodity pools
     or otherwise as vehicles for trading in the commodities futures or
     commodity options markets;

3.   The Portfolios will disclose to all prospective Shareholders the purpose of
     and limitations on their commodity futures trading;

4.   The Portfolios will submit to the CFTC special calls for information.
     Accordingly, registration as a commodities pool operator with the CFTC is
     not required.

In addition to the margin restrictions discussed above, transactions in futures
contracts may involve the segregation of funds in a segregated account pursuant
to requirements imposed by the SEC. Under those requirements, where a Portfolio
has a long position in a futures contract, it may be required to establish a
segregated account (not with a futures commission merchant or broker) containing
cash or certain liquid assets equal to the purchase price of the contract (less
any margin on deposit). For a short position in futures or forward contracts
held by a Portfolio, those requirements may mandate the establishment of a
segregated account (not with a futures commission merchant or broker) with cash
or certain liquid assets that, when added to the amounts deposited as margin,
equal the market value of the instruments underlying the futures contracts (but
are not less than the price at which the short positions were established).
However, segregation of assets is not required if a Portfolio "covers" a long
position. For example, instead of segregating assets, a Portfolio, when holding
a long position in a futures contract, could purchase a put option on the same
futures contract with a strike price as high or higher than the price of the
contract held by the Portfolio. In addition, where a Portfolio takes short
positions, or engages in sales of call options, it need not segregate assets if
it "covers" these positions. For example, where a Portfolio holds a short
position in a futures contract, it may cover by owning the instruments
underlying the contract. The Portfolios may also cover such a position by
holding a call option permitting it to purchase the same futures contract at a
price no higher than the price at which the short position was established.
Where a Portfolio sells a call option on a futures contract, it may cover either
by entering into a long position in the same contract at a price no higher than
the strike price of the call option or by owning the instruments underlying the
futures contract. A Portfolio could also cover this position by holding a
separate call option permitting it to purchase the same futures contract at a
price no higher than the strike price of the call option sold by the Portfolio.
In certain circumstances, entry into a futures contract that substantially
eliminates risk of loss and the opportunity for gain in an "appreciated
financial position" will also accelerate gain to the Portfolios.


                                       7
<PAGE>   67


RISK FACTORS IN FUTURES TRANSACTIONS

Liquidity. Positions in futures contracts may be closed out only on an exchange
which provides a secondary market for such futures. However, there can be no
assurance that a liquid secondary market will exist for any particular futures
contract at any specific time. Thus, it may not be possible to close a futures
position. In the event of adverse price movements, a Portfolio would continue to
be required to make daily cash payments to maintain the required margin. In
these situations, if a Portfolio has insufficient cash, it may have to sell
portfolio securities to meet daily margin requirements even though it may be
disadvantageous to do so. In addition, a Portfolio may be required to deliver
the instruments underlying futures contracts it holds. The inability to close
options and futures positions could also adversely impact the Portfolio's
ability to effectively hedge these positions. The Portfolios will minimize the
risk that they will be unable to close out a futures contract by only entering
into futures contracts which are traded on national futures exchanges and for
which there appears to be a liquid secondary market.

Risk of Loss. The risk of loss in trading futures contracts in some strategies
can be substantial, due both to the low margin deposits required, and the
extremely high degree of leverage involved in futures pricing. Because the
deposit requirements in the futures markets are less onerous than margin
requirements in the securities market, there may be increased participation by
speculators in the futures market which may also cause temporary price
distortions. A relatively small price movement in a futures contract may result
in immediate and substantial loss (as well as gain) to the investor. For
example, if at the time of purchase, 10% of the value of the futures contract is
deposited as margin, a subsequent 10% decrease in the value of the futures
contract would result in a total loss of the margin deposit, before any
deduction for the transaction costs, if the account were then closed out. Thus,
a purchase or sale of a futures contract may result in losses in excess of the
amount invested in the contract. However, because the futures strategies engaged
in by the Portfolios typically are for risk management purposes, Banc One
Investment Advisors does not believe that the Portfolios are subject to the
risks of loss frequently associated with futures transactions. Each Portfolio
would presumably have sustained comparable losses if, instead of the futures
contract, it had invested in the underlying financial instrument and sold it
after the decline.

Correlation Risk. A Portfolio's use of futures transactions involves the risk of
imperfect or no correlation where the securities underlying futures contracts
have different maturities than the portfolio securities being hedged. A
Portfolio could also lose money on futures contracts and also experience a
decline in value of its portfolio securities. There is also the risk of loss by
a Portfolio of margin deposits in the event of bankruptcy of a broker with whom
the Portfolio has an open position in a futures contract or related option.

Price Fluctuations. Most futures exchanges limit the amount of fluctuation
permitted in futures contract prices during a single trading day. The daily
limit establishes the maximum amount that the price of a futures contract may
vary either up or down from the previous day's settlement price at the end of a
trading session. Once the daily limit has been reached in a particular type of
contract, no trades may be made on that day at a price beyond that limit. The
daily limit governs only price movement during a particular trading day and
therefore does not limit potential losses, because the limit may prevent the
liquidation of unfavorable positions. Futures contract prices have occasionally
moved to the daily limit for several consecutive trading days with little or no
trading, thereby preventing prompt liquidation of futures positions and
subjecting some futures traders to substantial losses.

Some futures strategies, including selling futures, buying puts and writing
covered calls, may reduce a Portfolio's exposure to price fluctuations. Other
strategies, including buying futures, and buying calls, tend to increase market
exposure. Futures and options may be combined with each other in order to adjust
the risk and return characteristics of the overall portfolio. A Portfolio
expects to enter into these transactions to manage a return or spread on a
particular investment or portion of its assets, to protect against any increase
in the price of securities a Portfolio anticipates purchasing at a later date,
or for other risk management strategies.


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OPTIONS CONTRACTS

The Portfolios may use options on securities or futures contracts as a hedging
device. An option gives the buyer the right (but not the obligation) to purchase
a futures contract or security at a specified price (also called the STRIKE
price). A CALL OPTION gives the buyer the "right to purchase" a security at a
specified price (the exercise price) at any time until a certain date (the
expiration date). So long as the obligation of the writer of a call option
continues, the writer may be assigned an exercise notice by the broker-dealer
through whom the option was sold, requiring the writer to deliver the underlying
security against payment of the exercise price. This obligation terminates upon
the expiration of the call option, or such earlier time at which the writer
effects a closing purchase transaction by repurchasing an option identical to
that previously sold. To secure the writer's obligation to deliver the
underlying security in the case of a call option, subject to the rules of the
Options Clearing Corporation, a writer is required to deposit in escrow the
underlying security or other assets in accordance with these rules.

A PUT OPTION gives the buyer the right to sell the underlying futures contract
or security. The seller (or "writer") of a put option must purchase futures
contracts or securities at a strike price if the option is exercised. In the
case of a call option, the seller must sell the futures contract or security in
the underlying futures contract or security at the strike price if the option is
exercised.

A NAKED OPTION is an option written by a party who does not own the underlying
futures contract or security. A COVERED OPTION is an option written by a party
who does own the underlying position. The initial purchase (sale) of an option
is an "opening transaction." In order to close out an option position, the
Portfolio may enter into a "closing transaction". This involves the sale
(purchase) of an option contract on the same security with the same exercise
price and expiration date as the option contract originally opened.

A call option on a futures contract or security is said to be "in-the-money" if
the strike price is below current market levels and "out-of-the-money" if the
strike price is above current market levels. A put option is "in-the-money" if
the strike price is above current market levels, and "out-of-the-money" if the
strike price is below current market levels.

Options have limited life spans, usually tied to the delivery or settlement date
of the underlying futures contract or security. Some options, however, expire
significantly in advance of such dates. An option that is "out-of-the-money" and
not offset by the time it expires becomes worthless. On certain exchanges
"in-the-money" options are automatically exercised on their expiration date, but
on others unexercised options simply become worthless after their expiration
date. Options usually trade at a premium (referred to as the "time value" of the
option) above their intrinsic value (the difference between the market price for
the underlying futures contract or equity security and the strike price). As an
option nears its expiration date, the market value and the intrinsic value move
into parity as the time value diminishes.

Increased market volatility generally increases the value of options by
increasing the probability of favorable market swings, putting outstanding
options "in-the-money." Although purchasing options is a limited risk trading
approach, significant losses can be incurred by doing so.

WRITING (SELLING) COVERED CALLS

The Portfolios may write (sell) covered call options and purchase options to
close out options previously written by the Portfolio. The Portfolios' purpose
in writing covered call options is to generate additional premium income. This
premium income will serve to enhance a Portfolio's total return and will reduce
the effect of any price decline of the security involved in the option.
Generally, the Portfolios will write covered call options on securities which,
in the opinion of Banc One Investment Advisors are not expected to make any
major price moves in the near future but which, over the long term, are deemed
to be attractive investments for the Portfolio. The Portfolios will write only
covered call options. This means that a Portfolio will only write a call option
on a security which a Portfolio already owns.

Portfolio securities on which call options may be written will be purchased
solely on the basis of investment considerations consistent with each
Portfolio's investment objectives. The writing of covered call options is a
conservative investment technique believed to involve relatively little risk (in
contrast to the writing of naked options, which a Portfolio will not do), but
capable of enhancing the Portfolio's total return. When writing a covered call
option, a Portfolio, in return for the premium, gives up the opportunity for
profit from a price increase in the underlying security above the exercise
price, but conversely retains the risk of loss should the price of the security
decline. Unlike one who owns securities not subject to an option, a Portfolio
has no control


                                       9
<PAGE>   69


over when it may be required to sell the underlying securities, since it may be
assigned an exercise notice at any time prior to the expiration of its
obligation as a writer. Thus, the security could be "called away" at a price
substantially below the fair market value of the security. If a call option
which a Portfolio has written expires, a Portfolio will realize a gain in the
amount of the premium; however, such gain may be offset by a decline in the
market value of the underlying security during the option period. If the call
option is exercised, a Portfolio will realize a gain or loss from the sale of
the underlying security. The security covering the call will be maintained in a
segregated account of the Portfolio's custodian. The Portfolios do not consider
a security covered by a call to be "pledged" as that term is used in each
Portfolio's policy which limits the pledging or mortgaging of its assets.

The premium received is the market value of an option. The premium each
Portfolio will receive from writing a call option will reflect, among other
things, the current market price of the underlying security, the relationship of
the exercise price to the market price, the historical price volatility of the
underlying security, and the length of the option period. Once the decision to
write a call option has been made, Banc One Investment Advisors, in determining
whether a particular call option should be written on a particular security,
will consider the reasonableness of the anticipated premium and the likelihood
that a liquid secondary market will exist for those options. The premium
received by a Portfolio for writing covered call options will be recorded as a
liability in the Portfolio's statement of assets and liabilities. This liability
will be adjusted daily to the option's current market value, which will be the
latest sale price at the time at which the net asset value per Share of the
Portfolio is computed (close of the New York Stock Exchange), or, in the absence
of such sale, the latest asked price. The liability will be extinguished upon
expiration of the option, the purchase of an identical option in the closing
transaction, or delivery of the underlying security upon the exercise of the
option.

Generally, a Portfolio, in order to avoid the exercise of an option sold by it,
will be able to cancel its obligation under the option by entering into a
closing purchase transaction, if available, unless selling (in the case of a
call option) or purchasing (in the case of a put option) the underlying
securities is determined to be in a Portfolio's best interest. A closing
purchase transaction consists of a Portfolio purchasing an option having the
same terms as the option sold by a Portfolio, and has the effect of cancelling a
Portfolio's position as a seller. The premium which a Portfolio will pay in
executing a closing purchase transaction may be higher (or lower) than the
premium received when the option was sold, depending in large part upon the
relative price of the underlying security at the time of each transaction. To
the extent options sold by a Portfolio are exercised and a Portfolio delivers
securities to the holder of a call option, a Portfolio's turnover rate will
increase, which would cause a Portfolio to incur additional brokerage expenses.

Closing transactions will be effected in order to realize a profit on an
outstanding call option, to prevent an underlying security from being called, or
to permit the sale of the underlying security. Furthermore, effecting a closing
transaction permits a Portfolio to write another call option on the underlying
security with either a different exercise price or expiration date or both. If a
Portfolio desires to sell a particular security from its portfolio on which it
has written a call option it will seek to effect a closing transaction prior
to, or concurrently with, the sale of the security. There is, of course, no
assurance that a Portfolio will be able to effect such closing transactions at a
favorable price. If a Portfolio cannot enter into a closing transaction, it may
be required to hold a security that it might otherwise have sold, in which case
it would continue to be at market risk on the security. This could result in
higher transaction costs. A Portfolio will pay transaction costs in connection
with the writing of options to close out previously written options. Such
transaction costs are normally higher than those applicable to purchases and
sales of portfolio securities.

Call options written by a Portfolio will normally have expiration dates of less
than nine months from the date written. The exercise price of the options may be
below, equal to, or above the current market values of the underlying securities
at the time the options are written. From time to time, a Portfolio may purchase
an underlying security for delivery in accordance with an exercise notice of a
call option assigned to it, rather than delivering the security from its
portfolio. In such cases, additional costs will be incurred.

A Portfolio will realize a profit or loss from a closing purchase transaction if
the cost of the transaction is less or more than the premium received from the
writing of the option. Because increases in the market price of a call option
will generally reflect increases in the market price of the underlying security,
any loss resulting from the repurchase of a call option is likely to be offset
in whole or in part by appreciation of the underlying security owned by the
Portfolio.


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<PAGE>   70


PURCHASING CALL OPTIONS

The Portfolios may purchase call options to hedge against an increase in the
price of securities that the Portfolio wants ultimately to buy. Such hedge
protection is provided during the life of the call option because the Portfolio,
as holder of the call option, is able to buy the underlying security at the
exercise price regardless of any increase in the underlying security's market
price. In order for a call option to be profitable, the market price of the
underlying security must rise sufficiently above the exercise price to cover the
premium and transaction costs. These costs will reduce any profit the Portfolio
might have realized had it bought the underlying security at the time it
purchased the call option. If paying a premium for a call option, together with
a price movement in the underlying security, is such that exercise of the option
would not be profitable to the Portfolio, loss of the premium may be offset by a
decrease in the acquisition cost of securities by the Portfolio.

PURCHASING PUT OPTIONS

The Portfolios may also purchase put options to protect their portfolio holdings
in an underlying security against a decline in market value. Hedge protection is
provided during the life of the put option since the Portfolio, as holder of the
put option, is able to sell the underlying security at the put exercise price
regardless of any decline in the underlying security's market price. For a put
option to be profitable, the market price of the underlying security must
decline sufficiently below the exercise price to cover the premium and
transaction costs. By using put options in this manner, the Portfolio will
reduce any profit it might otherwise have realized from appreciation of the
underlying security by the premium paid for the put option and by transaction
costs. However, any loss of premium may be offset by an increase in the value of
the Portfolio's securities.

SECURED PUTS

The Portfolios may write secured puts. For the secured put writer, substantial
depreciation in the value of the underlying security would result in the
security being "put to" the writer at the strike price of the option which may
be substantially greater than the fair market value of the security. If a
secured put option expires unexercised, the writer realizes a gain in the amount
of the premium.

STRADDLES AND SPREADS

The Portfolios also may engage in straddles and spreads. In a straddle
transaction, a Portfolio either buys a call and a put or sells a call and a put
on the same security. In a spread, the Portfolio purchases and sells a call or a
put. The Portfolio will sell a straddle when Banc One Investment Advisors
believes the price of a security will be stable. The Portfolio will receive a
premium on the sale of the put and the call. A spread permits the Portfolio to
make a hedged investment that the price of a security will increase or decline.

RISK FACTORS IN OPTIONS TRANSACTIONS

Risk of Loss. When it purchases an option, a Portfolio runs the risk of losing
its entire investment in the option in a relatively short period of time, unless
the Portfolio exercises the option or enters into a closing sale transaction
with respect to the option during the life of the option. If the price of the
underlying security does not rise (in the case of a call) or fall (in the case
of a put) to an extent sufficient to cover the option premium and transaction
costs, a Portfolio will lose part or all of its investment in the option. This
contrasts with an investment by a Portfolio in the underlying securities,
because the Portfolio may continue to hold its investment in those securities
notwithstanding the lack of a change in price of those securities. In addition,
there may be imperfect or no correlation between the changes in market value of
the securities held by the Portfolios and the prices of the options.

Judgement of Advisor. The successful use of the options strategies depends on
the ability of Banc One Investment Advisors to assess interest rate and market
movements correctly and to accurately calculate the fair price of the option.
The effective use of options also depends on a Portfolio's ability to terminate
option positions at times when Banc One Investment Advisors deems it desirable
to do so. A Portfolio will take an option position only if Banc One Investment
Advisors believes there is a liquid secondary market for the option, however,
there is no assurance that a Portfolio will be able to effect closing
transactions at any particular time or at an acceptable price.


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<PAGE>   71


Liquidity. If a secondary trading market in options were to become unavailable,
a Portfolio could no longer engage in closing transactions. Lack of investor
interest might adversely affect the liquidity of the market for particular
options or series of options. A marketplace may discontinue trading of a
particular option or options generally. In addition, a market could become
temporarily unavailable if unusual events, such as volume in excess of trading
or clearing capability, were to interrupt normal market operations. A
marketplace may at times find it necessary to impose restrictions on particular
types of options transactions, which may limit a Portfolio's ability to realize
its profits or limit its losses.

Market Restrictions. Disruptions in the markets for the securities underlying
options purchased or sold by a Portfolio could result in losses on the options.
If trading is interrupted in an underlying security, the trading of options on
that security is normally halted as well. As a result, a Portfolio as purchaser
or writer of an option will be unable to close out its positions until option
trading resumes, and it may be faced with losses if trading in the security
reopens at a substantially different price. In addition, the Options Clearing
Corporation ("OCC") or other options markets may impose exercise restrictions.
If a prohibition on exercise is imposed at the time when trading in the option
has also been halted, a Portfolio as purchaser or writer of an option will be
locked into its position until one of the two restrictions has been lifted. If a
prohibition on exercise remains in effect until an option owned by a Portfolio
has expired, the Portfolio could lose the entire value of its option.

Foreign Investment Risks. Special risks are presented by internationally-traded
options. Because of time differences between the United States and the various
foreign countries, and because different holidays are observed in different
countries, foreign option markets may be open for trading during hours or on
days when U.S. markets are closed. As a result, option premiums may not reflect
the current prices of the underlying interest in the United States.


LIMITATIONS ON THE USE OF OPTIONS


Each Portfolio will limit the writing of put and call options to 25% of its net
assets. Some Portfolios may enter into over-the-counter option transactions.
There will be an active over-the-counter market for such options which will
establish their pricing and liquidity. The Portfolios will only enter into these
option transactions with broker/dealers who have a minimum net worth of
$20,000,000.

GOVERNMENT SECURITIES

The Portfolios invest in securities issued by agencies and instrumentalities of
the U.S. Government. Not all securities issued by U.S. Government agencies and
instrumentalities are backed by the full faith and credit of the U.S. Treasury.

- -    Obligations of certain agencies and instrumentalities of the U.S.
     government, such as the Government National Mortgage Association ("Ginnie
     Mae") and the Export-Import Bank, are supported by the full faith and
     credit of the U.S. Treasury;

- -    Others, such as the Federal National Mortgage Association ("Fannie Mae"),
     are supported by the right of the issuer to borrow from the Treasury;

- -    Others are supported by the discretionary authority of the U.S. government
     to purchase the agency's obligations; and

- -    Still others, such as the Federal Farm Credit Banks and the Federal Home
     Loan Mortgage Corporation ("Freddie Mac") are supported only by the credit
     of the instrumentality.

No assurance can be given that the U.S. government would provide financial
support to U.S. government-sponsored agencies or instrumentalities if it is not
obligated to do so by law. A Portfolio will invest in the obligations of these
agencies or instrumentalities only when Banc One Investment Advisors believes
that the credit risk is minimal. For information on mortgage-related securities
issued by certain agencies or instrumentalities of the U.S. government, see
"Investment Objectives and Policies--Mortgage-Related Securities" in this
Statement of Additional Information.


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<PAGE>   72



HIGH YIELD/HIGH RISK SECURITIES/JUNK BONDS

The Diversified Mid Cap Portfolio may invest in convertible securities that are
rated below investment grade by the primary rating agencies (BB or lower by S&P
and BA or lower by Moody's). Such convertible securities may be structured as
bonds or preferred stock that convert to common stock. The Bond Portfolio may
invest up to 5% of its net assets in corporate and municipal bonds that are
rated below investment grade. Terms used to describe securities that are rated
below investment grade include "high yield securities," "lower rated bonds,"
"non-investment grade bonds," "below investment grade bonds" and "junk bonds."
These securities are considered to be high risk investments. The risks include
the following:

     Greater Risk of Loss. There is a greater risk that issuers of lower rated
     securities will default than issuers of higher rated securities. Issuers of
     lower rated securities may be less creditworthy, highly indebted,
     financially distressed, or bankrupt. These issuers are more vulnerable to
     real or perceived economic changes, political changes or adverse industry
     developments. If an issuer fails to pay principal or interest, the
     Portfolio would experience a decrease in income and a decline in the market
     value of their investments. The Portfolio may also incur additional
     expenses in seeking recovery from the issuer.

     Sensitivity to Interest Rate and Economic Changes. The income and market
     value of lower-rated securities may fluctuate more than higher rated
     securities. Although non-investment grade securities tend to be less
     sensitive to interest rate changes than investment grade securities,
     non-investment grade securities are more sensitive to short-term corporate,
     economic and market developments. During periods of economic uncertainty
     and change, the market price of the investments in lower-rated securities
     may be volatile.

     Valuation Difficulties. It is often more difficult to value lower rated
     securities than higher rated securities. If an issuer's financial condition
     deteriorates, accurate financial and business information may be limited or
     unavailable. In addition, the lower rated investments may be thinly traded
     and there may be no established secondary market. Because of the lack of
     market pricing and current information for investments in lower rated
     securities, valuation of such investments is much more dependent on
     judgment than is the case with higher rated securities.

     Liquidity. There may be no established secondary or public market for
     investments in lower rated securities. As a result, a Portfolio that
     invests in lower rated securities may be required to sell investments at
     substantial losses or retain them indefinitely even where an issuer's
     financial condition is deteriorating.

     High Yield Bond Market. Unlike investment grade securities (including
     securities which were investment grade when issued but have fallen below
     investment grade), the track record for bond default rates on new issues of
     non-investment grade bonds is relatively short. It may be that future
     default rates on new issues of non-investment grade securities will be more
     widespread and higher than in the past, especially if economic conditions
     deteriorate.

     Credit Quality. Credit quality of non-investment grade securities can
     change suddenly and unexpectedly, and even recently-issued credit ratings
     may not fully reflect the actual risks posed by a particular high-yield
     security.

     New Legislation. Future legislation may have a possible negative impact on
     the market for high yield, high risk bonds. As an example, in the late
     1980's, legislation required federally-insured savings and loan
     associations to divest their investments in high yield, high risk bonds.
     New legislation, if enacted, could have a material negative effect on a
     Portfolio's investments in lower rated securities.


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INDEX SHARES

Certain of the Portfolios may invest in Index Shares. Index Shares are ownership
interests in unit investment trusts and other pooled investment vehicles that
hold a portfolio of securities or stocks designed to track the price performance
and dividend yield of a specified index. Index shares include Standard & Poor's
Depository Receipts ("SPDRS") and Nasdaq-100 Trusts (Nasdaq-100s). New types of
Index Shares continue to be developed such as select sector SPDRs and other
Index Shares that are designed to track indices other than the S&P 500 Index or
Nasdaq-100 Index. In the future, the Portfolios may invest in these types of
Index Shares.

SPDRs invest in a securities portfolio that includes substantially all of the
common stocks (in substantially the same weights) as the common stocks included
in a particular Standard & Poor's Index such as the S&P 500. Nasdaq-100s invest
in a securities portfolio that includes substantially all of the securities of
the Nasdaq-100 index. SPDRs and Nasdaq-100s are traded on the American Stock
Exchange, but may not be redeemed. The results of SPDRs and Nasdaq-100s will not
match the performance of the designated index due to reductions in the
performance attributable to transaction and other expenses, including fees paid
by the SPDR or Nasdaq-100s to service providers. Nasdaq-100 Shares are subject
to risks specific to the performance of a few component securities that
currently represent a highly concentrated weighting in the Nasadaq-100 Index.
SPDRs distribute dividends on a quarterly basis.

Index Shares are not actively managed. Rather, an Index Share's objective is to
track the performance of a specified index. Therefore, securities may be
purchased, retained and sold at times when an actively managed trust would not
do so. As a result, you can expect greater risk of loss (and a correspondingly
greater prospect of gain) from changes in the value of securities that are
heavily weighted in the index than would be the case if the Index Share was not
fully invested in such securities.

A Portfolio will limit its investments in any one Index Share to 5% of the
Portfolio's total assets and 3% of the outstanding voting securities of the
Index Share. Moreover, a Portfolio's investments in Index Shares will not exceed
10% of the Portfolio's total assets, when aggregated with all other investments
in investment companies.

INVESTMENT COMPANY SECURITIES

The Portfolios may invest up to 5% of their total assets in the securities of
any one investment company (another mutual fund), but may not own more than 3%
of the outstanding securities of any one investment company or invest more than
10% of their total assets in the securities of other investment companies. Other
investment company securities may include securities of a money market fund of
One Group(R) Mutual Funds and securities of other money market funds for which
Banc One Investment Advisors or its affiliate serves as investment advisor or
administrator. Because other investment companies employ an investment advisor,
such investments by the Portfolios may cause Shareholders to bear duplicate
fees. Banc One Investment Advisors will waive its fee attributable to Portfolio
assets invested in funds advised by Banc One Investment Advisors. Banc One
Investment Advisors will also waive its fees attributable to the assets of any
Portfolio invested in any investment company if required by the laws of any
state in which shares of the Trust are sold.

LOAN PARTICIPATIONS AND ASSIGNMENTS

Some of the Portfolios may invest in fixed and floating rate loans ("Loans").
Loans are typically arranged through private negotiations between borrowers
(which may be corporate issuers or issuers of sovereign debt obligations) and
one or more financial institutions ("Lenders"). Generally, the Portfolios invest
in Loans by purchasing Loan Participations ("Participations") or assignments of
all or a portion of Loans ("Assignments") from third parties.

Typically, a Portfolio will have a contractual relationship only with the Lender
and not with the borrower when it purchases a Participation. In contrast, a
Portfolio has direct rights against the borrower on the Loan when it purchases
an Assignment. Because Assignments are arranged through private negotiations
between potential assignees and potential assignors, however, the rights and
obligations acquired by a Portfolio as the purchaser of an Assignment may differ
from, and be more limited than, those held by the assigning Lender.

Limitations on Investments in Loan Participations and Assignments. Loan
participants and assignments may be illiquid. As a result, a Portfolio will
invest no more than 15% of its net assets in these investments. If a government
entity is a borrower on a Loan, the Portfolio will consider the government to be
the issuer of a Participation or Assignment for purposes of the Portfolio's
fundamental investment policy that it will not invest 25% or more of its total
assets in securities of issuers conducting their principal business activities
in the same industry (i.e., foreign government).

Risk Factors of Loan Participations and Assignments. A Portfolio may have
difficulty disposing of Assignments and Participations because to do so it will
have to assign such securities to a third party. Because there is no liquid
market for such securities, the Portfolios anticipate that such securities could
be sold only to a limited number of institutional investors. The lack of a
liquid secondary market may have an adverse impact on the value of such
securities and a Portfolio's ability to dispose of particular Assignments or
Participations when necessary to meet a Portfolio's liquidity needs in response
to a specific economic


                                       14
<PAGE>   74

event such as a deterioration in the creditworthiness of the borrower. The lack
of a liquid secondary market for Assignments and Participations also may make it
more difficult for a Portfolio to assign a value to those securities when
valuing the Portfolio's securities and calculating its net asset value.

MORTGAGE-RELATED SECURITIES

Mortgage-Backed Securities (CMOs and REMICs). Mortgage-backed securities include
collateralized mortgage obligations ("CMOs") and Real Estate Mortgage Investment
Conduits ("REMICs"). (A REMIC is a CMO that qualifies for special tax treatment
under the Code and invests in certain mortgages principally secured by interests
in real property and other permitted investments).

Mortgage-backed securities represent pools of mortgage loans assembled for sale
to investors by:

- -    various governmental agencies such as Ginnie Mae;

- -    government-related organizations such as Fannie Mae and Freddie Mac;

- -    nongovernmental issuers such as commercial banks, savings and loan
     institutions, mortgage bankers, and private mortgage insurance companies.
     (Non-governmental mortgage securities cannot be treated as U.S. government
     securities for purposes of investment policies).

There are a number of important differences among the agencies and
instrumentalities of the U.S. government that issue mortgage-related securities
and among the securities that they issue.

     Ginnie Mae Securities. Mortgage-related securities issued by Ginnie Mae
     include Ginnie Mae Mortgage Pass-Through Certificates which are guaranteed
     as to the timely payment of principal and interest by Ginnie Mae. Ginnie
     Mae's guarantee is backed by the full faith and credit of the United
     States. Ginnie Mae is a wholly-owned U.S. government corporation within the
     Department of Housing and Urban Development. Ginnie Mae certificates also
     are supported by the authority of Ginnie Mae to borrow funds from the U.S.
     Treasury to make payments under its guarantee.

     Fannie Mae Securities. Mortgage-related securities issued by Fannie Mae
     include Fannie Mae Guaranteed Mortgage Pass-Through Certificates which are
     solely the obligations of Fannie Mae and are not backed by or entitled to
     the full faith and credit of the United States. Fannie Mae is a
     government-sponsored organization owned entirely by private stock-holders.
     Fannie Mae Certificates are guaranteed as to timely payment of the
     principal and interest by Fannie Mae.

     Freddie Mac Securities. Mortgage-related securities issued by Freddie Mac
     include Freddie Mac Mortgage Participation Certificates. Freddie Mac is a
     corporate instrumentality of the United States, created pursuant to an Act
     of Congress, which is owned entirely by Federal Home Loan Banks. Freddie
     Mac Certificates are not guaranteed by the United States or by any Federal
     Home Loan Bank and do not constitute a debt or obligation of the United
     States or of any Federal Home Loan Bank. Freddie Mac Certificates entitle
     the holder to timely payment of interest, which is guaranteed by Freddie
     Mac. Freddie Mac guarantees either ultimate collection or timely payment of
     all principal payments on the underlying mortgage loans. When Freddie Mac
     does not guarantee timely payment of principal, Freddie Mac may remit the
     amount due on account of its guarantee of ultimate payment of principal at
     any time after default on an underlying mortgage, but in no event later
     than one year after it becomes payable.

CMOs and guaranteed REMIC pass-through certificates ("REMIC Certificates")
issued by Fannie Mae, Freddie Mac, Ginnie Mae and private issuers are types of
multiple class pass-through securities. Investors may purchase beneficial
interests in REMICs, which are known as "regular" interests or "residual"
interests. The BOND PORTFOLIO does not currently intend to purchase residual
interests in REMICs. The REMIC Certificates represent beneficial ownership
interests in a REMIC Trust, generally consisting of mortgage loans or Fannie
Mae, Freddie Mac or Ginnie Mae guaranteed mortgage pass-through certificates
(the "Mortgage Assets"). The obligations of Fannie Mae, Freddie Mac or Ginnie
Mae under their respective guaranty of the REMIC Certificates are obligations
solely of Fannie Mae, Freddie Mac or Ginnie Mae, respectively.


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<PAGE>   75


     Ginnie Mae REMIC Certificates. Ginnie Mae guarantees the full and timely
     payment of interest and principal on each class of securities (in
     accordance with the terms of those classes as specified in the related
     offering circular supplement). The Ginnie Mae guarantee is backed by the
     full faith and credit of the United States of America.

     Fannie Mae REMIC Certificates. Fannie Mae REMIC Certificates are issued and
     guaranteed as to timely distribution of principal and interest by Fannie
     Mae. In addition, Fannie Mae will be obligated to distribute the principal
     balance of each class of REMIC Certificates in full, whether or not
     sufficient funds are available.

     Freddie Mac REMIC Certificates. Freddie Mac guarantees the timely payment
     of interest, and also guarantees the payment of principal as payments are
     required to be made on the underlying mortgage participation certificates
     ("PCs"). PCs represent undivided interests in specified residential
     mortgages or participation therein purchased by Freddie Mac and placed in a
     PC pool. With respect to principal payments on PCs, Freddie Mac generally
     guarantees ultimate collection of all principal of the related mortgage
     loans without offset or deduction. Freddie Mac also guarantees timely
     payment of principal on certain PCs referred to as "Gold PCs."

REMIC Certificates issued by Fannie Mae, Freddie Mac and Ginnie Mae are treated
as U.S. government securities for purposes of investment policies.

CMOs and REMIC Certificates provide for the redistribution of cash flow to
multiple classes. Each class of CMOs or REMIC Certificates, often referred to as
a "tranche," is issued at a specific adjustable or fixed interest rate and must
be fully retired no later than its final distribution date. This reallocation of
interest and principal results in the redistribution of prepayment risk across
to different classes. This allows for the creation of bonds with more or less
risk than the underlying collateral exhibits. Principal prepayments on the
mortgage loans or the Mortgage Assets underlying the CMOs or REMIC Certificates
may cause some or all of the classes of CMOs or REMIC Certificates to be retired
substantially earlier than their final distribution dates. Generally, interest
is paid or accrues on all classes of CMOs or REMIC Certificates on a monthly
basis.

The principal of and interest on the Mortgage Assets may be allocated among the
several classes of CMOs or REMIC Certificates in various ways. In certain
structures (known as "sequential pay" CMOs or REMIC Certificates), payments of
principal, including any principal prepayments, on the Mortgage Assets generally
are applied to the classes of CMOs or REMIC Certificates in the order of their
respective final distribution dates. Thus, no payment of principal will be made
on any class of sequential pay CMOs or REMIC Certificates until all other
classes having an earlier final distribution date have been paid in full.

Additional structures of CMOs and REMIC Certificates include, among others,
"parallel pay" CMOs and REMIC Certificates. Parallel pay CMOs or REMIC
Certificates are those which are structured to apply principal payments and
prepayments of the Mortgage Assets to two or more classes concurrently on a
proportionate or disproportionate basis. These simultaneous payments are taken
into account in calculating the final distribution date of each class.

A wide variety of REMIC Certificates may be issued in the parallel pay or
sequential pay structures. These securities include accrual certificates (also
known as "Z-Bonds"), which only accrue interest at a specified rate until all
other certificates having an earlier final distribution date have been retired
and are converted thereafter to an interest-paying security, and planned
amortization class ("PAC") certificates, which are parallel pay REMIC
Certificates which generally require that specified amounts of principal be
applied on each payment date to one or more classes of REMIC Certificates (the
"PAC Certificates"), even though all other principal payments and prepayments of
the Mortgage Assets are then required to be applied to one or more other classes
of the certificates. The scheduled principal payments for the PAC Certificates
generally have the highest priority on each payment date after interest due has
been paid to all classes entitled to receive interest currently. Shortfalls, if
any, are added to the amount of principal payable on the next payment date. The
PAC Certificate payment schedule is taken into account in calculating the final
distribution date of each class of PAC. In order to create PAC tranches, one or
more tranches generally must be created that absorb most of the volatility in
the underlying Mortgage Assets. These tranches tend to have market prices and
yields that are much more volatile than the PAC classes. The Z-Bonds in which
the Portfolios may invest may bear the same non-credit-related risks as do
other types of Z-Bonds. Z-Bonds in which the Portfolio may invest will not
include residual interest.

Mortgage Dollar Rolls. Some of the Portfolios may enter into Mortgage Dollar
Rolls. In a Mortgage Dollar Role transaction, the Portfolios sell securities for
delivery in the current month and simultaneously contract with the same
counterparty to repurchase similar (same type, coupon and maturity) but not
identical securities on a specified future date. When a Portfolio enters into


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<PAGE>   76


mortgage dollar rolls, the Portfolio will hold and maintain a segregated account
until the settlement date. The segregated account will contain cash or liquid,
high grade debt securities in an amount equal to the purchase price that the
Portfolio is required to pay. The Portfolios benefit from a mortgage dollar roll
to the extent of:

- -    the difference between the price received for the securities sold and the
     lower price for the future purchase (often referred to as the "drop"); and

- -    fee income plus the interest earned on the cash proceeds of the securities
     sold until the settlement date of the future purchase.

Unless such benefits exceed the amount of income, capital appreciation or gains
on the securities sold as part of the mortgage dollar roll, the investment
performance of the Portfolios will be less than what the performance would have
been without the use of mortgage dollar rolls. The benefits of mortgage dollar
rolls may depend upon Banc One Investment Advisors' ability to predict mortgage
prepayments and interest rates. There is no assurance that mortgage dollar rolls
can be successfully employed. The Portfolios currently intend to enter into
mortgage dollar rolls that are accounted for as a financing transaction. For
purposes of diversification and investment limitations, mortgage dollar rolls
are considered to be mortgage-backed securities.

Stripped Mortgage Backed Securities. Stripped Mortgage Backed Securities
("SMBS") are derivative multi-class mortgage securities. SMBS are usually
structured with two classes that receive different proportions of the interest
and principal distributions from a pool of mortgage assets. A common type of
SMBS will have one class receiving all of the interest from the mortgage assets
("IOs"), while the other class will receive all of the principal ("POs").
Mortgage IOs receive monthly interest payments based upon a notional amount that
declines over time as a result of the normal monthly amortization and
unscheduled prepayments of principal on the associated mortgage POs.

In addition to the risks applicable to Mortgage-Related Securities in general,
SMBS are subject to the following additional risks:

     Prepayment/Interest Rate Sensitivity. SMBS are extremely sensitive to
     changes in prepayments and interest rates. Even though these securities
     have been guaranteed by an agency or instrumentality of the U.S.
     government, under certain interest rate or prepayment rate scenarios, the
     Portfolios may lose money on investments in SMBS.

     Interest Only SMBS. Changes in prepayment rates can cause the return on
     investment in IOs to be highly volatile. Under extremely high prepayment
     conditions, IOs can incur significant losses.
     Principal Only SMBS. POs are bought at a discount to the ultimate principal
     repayment value. The rate of return on a PO will vary with prepayments,
     rising as prepayments increase and falling as prepayments decrease.
     Generally, the market value of these securities is unusually volatile in
     response to changes in interest rates.
     Yield Characteristics. Although SMBS may yield more than other
     mortgage-backed securities, their cash flow patterns are more volatile and
     there is a greater risk that any premium paid will not be fully recouped.
     Banc One Investment Advisors will seek to manage these risks (and potential
     benefits) by investing in a variety of such securities and by using certain
     analytical and hedging techniques.

A Portfolio may only invest in SMBS issued or guaranteed by the U.S. government,
its agencies or instrumentalities. Although the market for SMBS is increasingly
liquid, certain SMBS may not be readily marketable and will be considered
illiquid for purposes of the Portfolios' limitations on investments in illiquid
securities.

Adjustable Rate Mortgage Loans. The Bond Portfolio, the Government Bond
Portfolio, and the Balanced Portfolio may invest in adjustable rate mortgage
loans ("ARMS"). ARMs eligible for inclusion in a mortgage pool will generally
provide for a fixed initial mortgage interest rate for a specified period of
time. Thereafter, the interest rates (the "Mortgage Interest Rates") may be
subject to periodic adjustment based on changes in the applicable index rate
(the "Index Rate"). The adjusted rate would be equal to the Index Rate plus a
gross margin, which is a fixed percentage spread over the Index Rate established
for each ARM at the time of its origination.

                                       17
<PAGE>   77


Adjustable interest rates can cause payment increases that some borrowers may
find difficult to make. However, certain ARMs may provide that the Mortgage
Interest Rate may not be adjusted to a rate above a maximum rate or below a
minimum rate. Certain ARMs may also be subject to limitations on the maximum
amount by which the Mortgage Interest Rate may adjust for any single adjustment
period (the "Maximum Adjustment"). Other ARMs ("Negatively Amortizing ARMs") may
provide for limitations on changes in the monthly payment on such ARMs.
Limitations on monthly payments can result in monthly payments which are greater
or less than the amount necessary to amortize a Negatively Amortizing ARM by its
maturity at the Mortgage Interest Rate in effect in any particular month. In the
event that a monthly payment is not sufficient to pay the interest accruing on a
Negatively Amortizing ARM, any excess interest is added to the principal balance
of the loan, causing negative amortization and will be repaid through future
monthly payments. It may take borrowers under Negatively Amortizing ARMs longer
periods of time to achieve equity and may increase the likelihood of default by
such borrowers. In the event that a monthly payment exceeds the sum of the
interest accrued at the applicable Mortgage Interest Rate and the principal
payment which would have been necessary to amortize the outstanding principal
balance over the remaining term of the loan, the excess (or "accelerated
amortization") further reduces the principal balance of the ARM. Negatively
Amortizing ARMs do not provide for the extension of their original maturity to
accommodate changes in their Mortgage Interest Rate. As a result, unless there
is a periodic recalculation of the payment amount (which there generally is),
the final payment may be substantially larger than the other payments. These
limitations on periodic increases in interest rates and on changes in monthly
payment protect borrowers from unlimited interest rate and payment increases.

Certain adjustable rate mortgage loans may provide for periodic adjustments of
scheduled payments in order to amortize fully the mortgage loan by its stated
maturity. Other adjustable rate mortgage loans may permit their stated maturity
to be extended or shortened in accordance with the portion of each payment that
is applied to interest as affected by the periodic interest rate adjustments.

There are two main categories of indices which provide the basis for rate
adjustments on ARMs: those based on U.S. Treasury securities and those derived
from a calculated measure such as a cost of funds index or a moving average of
mortgage rates. Commonly utilized indices include the one-year, three-year and
five-year constant maturity Treasury bill rates, the three-month Treasury bill
rate, the 180-day Treasury bill rate, rates on longer-term Treasury securities,
the 11th District Federal Home Loan Bank Cost of Funds, the National Median Cost
of Funds, the one-month, three-month, six-month or one-year London Interbank
Offered Rate ("LIBOR"), the prime rate of a specific bank, or commercial paper
rates. Some indices, such as the one-year constant maturity Treasury rate,
closely mirror changes in market interest rate levels. Others, such as the 11th
District Federal Home Loan Bank Cost of Funds index, tend to lag behind changes
in market rate levels and tend to be somewhat less volatile. The degree of
volatility in the market value of the Portfolio's portfolio and therefore in the
net asset value of the Portfolio's shares will be a function of the length of
the interest rate reset periods and the degree of volatility in the applicable
indices.

In general, changes in both prepayment rates and interest rates will change the
yield on Mortgage-Backed Securities. The rate of principal prepayments with
respect to ARMs has fluctuated in recent years. As is the case with fixed
mortgage loans, ARMs may be subject to a greater rate of principal prepayments
in a declining interest rate environment. For example, if prevailing interest
rates fall significantly, ARMs could be subject to higher prepayment rates than
if prevailing interest rates remain constant because the availability of fixed
rate mortgage loans at competitive interest rates may encourage mortgagors to
refinance their ARMs to "lock-in" a lower fixed interest rate. Conversely, if
prevailing interest rates rise significantly, ARMs may prepay at lower rates
than if prevailing rates remain at or below those in effect at the time such
ARMs were originated. As with fixed rate mortgages, there can be no certainty as
to the rate of prepayments on the ARMs in either stable or changing interest
rate environments. In addition, there can be no certainty as to whether
increases in the principal balances of the ARMs due to the addition of deferred
interest may result in a default rate higher than that on ARMs that do not
provide for negative amortization. Other factors affecting prepayment of ARMs
include changes in mortgagors' housing needs, job transfers, unemployment,
mortgagors' net equity in the mortgage properties and servicing decisions.


RISKS FACTORS OF MORTGAGE-RELATED SECURITIES


Guarantor Risk. There can be no assurance that the U.S. government would provide
financial support to Fannie Mae, Freddie Mac or Ginnie Mae if necessary in the
future. Although certain mortgage-related securities are guaranteed by a third
party or otherwise similarly secured, the market value of the security, which
may fluctuate, is not so secured.


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<PAGE>   78


Interest Rate Sensitivity. If a Portfolio purchases a mortgage-related security
at a premium, that portion may be lost if there is a decline in the market value
of the security whether resulting from changes in interest rates or prepayments
in the underlying mortgage collateral. As with other interest-bearing
securities, the prices of such securities are inversely affected by changes in
interest rates. However, though the value of a mortgage-related security may
decline when interest rates rise, the converse is not necessarily true because
in periods of declining interest rates the mortgages underlying the securities
are prone to prepayment. For this and other reasons, a mortgage-related
security's stated maturity may be shortened by unscheduled prepayments on the
underlying mortgages and, therefore, it is not possible to predict accurately
the security's return to the Portfolios. In addition, regular payments received
on mortgage-related securities include both interest and principal. No assurance
can be given as to the return the Portfolios of the Trust will receive when
these amounts are reinvested.

Market Value. The market value of the Portfolio's adjustable rate
Mortgage-Backed Securities may be adversely affected if interest rates rise
faster than the rates of interest payable on these securities or by the
adjustable rate mortgage loans underlying the securities. Furthermore,
adjustable rate Mortgage-Backed Securities or the mortgage loans underlying
these securities may contain provisions limiting the amount by which rates may
be adjusted upward and downward and may limit the amount by which monthly
payments may be increased or decreased to accommodate upward and downward
adjustments in interest rates.

Prepayments. Adjustable rate Mortgage-Backed Securities have less potential for
capital appreciation than fixed rate Mortgage-Backed Securities because their
coupon rates will decline in response to market interest rate declines. The
market value of fixed rate Mortgage-Backed Securities may be adversely affected
by increases in interest rates and, because of the risk of unscheduled principal
prepayments, may benefit less than other fixed rate securities of similar
maturity from declining interest rates. Finally, to the extent Mortgage-Backed
Securities are purchased at a premium, mortgage foreclosures and unscheduled
principal prepayments may result in some loss of the Portfolio's principal
investment to the extent of the premium paid. On the other hand, if these
securities are purchased at a discount, both a scheduled payment of principal
and an unscheduled prepayment of principal will increase current and total
returns and will accelerate the recognition of income.

Yield Characteristics. The yield characteristics of Mortgage-Backed Securities
differ from those of traditional fixed income securities. The major differences
typically include more frequent interest and principal payments, usually
monthly, and the possibility that prepayments of principal may be made at any
time. Prepayment rates are influenced by changes in current interest rates and a
variety of economic, geographic, social and other factors and cannot be
predicted with certainty. As with fixed rate mortgage loans, adjustable rate
mortgage loans may be subject to a greater prepayment rate in a declining
interest rate environment. The yields to maturity of the Mortgage-Backed
Securities in which the Portfolios invest will be affected by the actual rate of
payment (including prepayments) of principal of the underlying mortgage loans.
The mortgage loans underlying these securities generally may be prepaid at any
time without penalty. In a fluctuating interest rate environment, a predominant
factor affecting the prepayment rate on a pool of mortgage loans is the
difference between the interest rates on the mortgage loans and prevailing
mortgage loan interest rates (giving consideration to the cost of any
refinancing). In general, if mortgage loan interest rates fall sufficiently
below the interest rates on fixed rate mortgage loans underlying mortgage
pass-through securities, the rate of prepayment would be expected to increase.
Conversely, if mortgage loan interest rates rise above the interest rates on the
fixed rate mortgage loans underlying the mortgage pass-through securities, the
rate of prepayment may be expected to decrease.


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<PAGE>   79


MUNICIPAL SECURITIES

Municipal Securities are issued to obtain funds for various public purposes,
including the construction of a wide range of public facilities such as:

         1. bridges,
         2. highways,
         3. roads,
         4. schools,
         5. water and sewer works, and
         6. other utilities.

Other public purposes for which Municipal Securities may be issued include:

         1. refunding outstanding obligations,
         2. obtaining funds for general operating expenses and
         3. obtaining funds to lend to other public institutions and facilities.

In addition, certain debt obligations known as "private activity bonds" may be
issued by or on behalf of municipalities and public authorities to obtain funds
to provide


         1. water, sewage and solid waste facilities,
         2. qualified residential rental projects,
         3. certain local electric, gas and other heating or cooling facilities,
         4. qualified hazardous waste facilities,
         5. high-speed intercity rail facilities,
         6. governmentally-owned airports, docks and wharves and mass
            transportation facilities,
         7. qualified mortgages,
         8. student loan and redevelopment bonds, and
         9. bonds used for certain organizations exempt from Federal income
            taxation.


Certain debt obligations known as "industrial development bonds" under prior
Federal tax law may have been issued by or on behalf of public authorities to
obtain funds to provide:

         1. privately operated housing facilities,
         2. sports facilities,
         3. industrial parks,
         4. convention or trade show facilities,
         5. airport, mass transit, port or parking facilities,
         6. air or water pollution control facilities,
         7. sewage or solid waste disposal facilities, and
         8. facilities for water supply.

Other private activity bonds and industrial development bonds issued to fund the
construction, improvement, equipment or repair of privately-operated industrial,
distribution, research, or commercial facilities may also be Municipal
Securities, but the size of such issues is limited under current and prior
Federal tax law. The aggregate amount of most private activity bonds and
industrial development bonds is limited (except in the case of certain types of
facilities) under federal tax law by an annual "volume cap." The volume cap
limits the annual aggregate principal amount of such obligations issued by or on
behalf of all governmental instrumentalities in the state.

The two principal classifications of Municipal Securities consist of "general
obligation" and "limited" (or revenue) issues. General obligation bonds are
obligations involving the credit of an issuer possessing taxing power and are
payable from the issuer's general unrestricted revenues and not from any
particular fund or source. The characteristics and method of enforcement of
general obligation bonds vary according to the law applicable to the particular
issuer, and payment may be dependent upon


                                       20
<PAGE>   80


appropriation by the issuer's legislative body. Limited obligation bonds are
payable only from the revenues derived from a particular facility or class of
facilities or, in some cases, from the proceeds of a special excise or other
specific revenue source. Private activity bonds and industrial development bonds
generally are revenue bonds and thus not payable from the unrestricted revenues
of the issuer. The credit and quality of these bonds is generally related to the
credit of the bank selected to provide the letter of credit underlying the
bonds. Payment of principal of and interest on industrial development revenue
bonds is the responsibility of the corporate user (and any guarantor).

The Portfolios may also acquire "moral obligation" issues, which are normally
issued by special purpose authorities, and in other tax-exempt investments
including pollution control bonds and tax-exempt commercial paper. Each
Portfolio that may purchase municipal securities may purchase:

         1. Short-term tax-exempt General Obligations Notes,
         2. Tax Anticipation Notes,
         3. Bond Anticipation Notes,
         4. Revenue Anticipation Notes,
         5. Project Notes, and
         6. Other forms of short-term tax-exempt loans.

Such notes are issued with a short-term maturity in anticipation of the receipt
of tax funds, the proceeds of bond placements, or other revenues. Project Notes
are issued by a state or local housing agency and are sold by the Department of
Housing and Urban Development. While the issuing agency has the primary
obligation with respect to its Project Notes, they are also secured by the full
faith and credit of the United States through agreements with the issuing
authority which provide that, if required, the Federal government will lend the
issuer an amount equal to the principal of and interest on the Project Notes.

There are, of course, variations in the quality of Municipal Securities, both
within a particular classification and between classifications. Also, the yields
on Municipal Securities depend upon a variety of factors, including:

- -    general money market conditions,

- -    coupon rate,

- -    the financial condition of the issuer,

- -    general conditions of the municipal bond market,

- -    the size of a particular offering,

- -    the maturity of the obligations, and

- -    the rating of the issue.

The ratings of Moody's and S&P represent their opinions as to the quality of
Municipal Securities. However, ratings are general and are not absolute
standards of quality. Municipal Securities with the same maturity, interest rate
and rating may have different yields while Municipal Securities of the same
maturity and interest rate with different ratings may have the same yield.
Subsequent to its purchase by a Portfolio, an issue of Municipal Securities may
cease to be rated or its rating may be reduced below the minimum rating required
for purchase by the Portfolio. Banc One Investment Advisors will consider such
an event in determining whether the Portfolio should continue to hold the
obligations.

Municipal securities may include obligations of municipal housing authorities
and single-family mortgage revenue bonds. Weaknesses in Federal housing subsidy
programs and their administration may result in a decrease of subsidies
available for payment of principal and interest on housing authority bonds.
Economic developments, including fluctuations in interest rates and increasing
construction and operating costs, may also adversely impact revenues of housing
authorities. In the case of some housing authorities, inability to obtain
additional financing could also reduce revenues available to pay existing
obligations. Single-family mortgage revenue bonds are subject to extraordinary
mandatory redemption at par in whole or in part from the proceeds derived from
prepayments of underlying mortgage loans and also from the unused proceeds of
the issue within a stated period which may be within a year from the date of
issue.


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<PAGE>   81

Municipal leases are obligations issued by state and local governments or
authorities to finance the acquisition of equipment and facilities. Municipal
leases may be considered to be illiquid. They may take the form of a lease, an
installment purchase contract, a conditional sales contract, or a participation
interest in any of the above. The Board of Trustees is responsible for
determining the credit quality of unrated municipal leases, on an ongoing basis,
including an assessment of the likelihood that the lease will not be canceled.

RISK FACTORS IN MUNICIPAL SECURITIES

     Tax Risk. The Code imposes certain continuing requirements on issuers of
     tax-exempt bonds regarding the use, expenditure and investment of bond
     proceeds and the payment of rebates to the United States of America.
     Failure by the issuer to comply after the issuance of tax-exempt bonds with
     certain of these requirements could cause interest on the bonds to become
     includable in gross income retroactive to the date of issuance.

     Housing Authority Tax Risk. The exclusion from gross income for Federal
     income tax purposes for certain housing authority bonds depends on
     qualification under relevant provisions of the Code and on other provisions
     of Federal law. These provisions of Federal law contain requirements
     relating to the cost and location of the residences financed with the
     proceeds of the single-family mortgage bonds and the income levels of
     tenants of the rental projects financed with the proceeds of the
     multi-family housing bonds. Typically, the issuers of the bonds, and other
     parties, including the originators and servicers of the single-family
     mortgages and the owners of the rental projects financed with the
     multi-family housing bonds, covenant to meet these requirements. However,
     there is no assurance that the requirements will be met. If such
     requirements are not met:

     -    the interest on the bonds may become taxable, possibly retroactively
          from the date of issuance;

     -    the value of the bonds may be reduced;

     -    you and other Shareholders may be subject to unanticipated tax
          liabilities;

     -    a Portfolio may be required to sell the bonds at the reduced value;

     -    it may be an event of default under the applicable mortgage;

     -    the holder may be permitted to accelerate payment of the bond; and

     -    the issuer may be required to redeem the bond.

     In addition, if the mortgage securing the bonds is insured by the Federal
     Housing Administration ("FHA"), the consent of the FHA may be required
     before insurance proceeds would become payable.

     Information Risk. Information about the financial condition of issuers of
     Municipal Securities may be less available than about corporations having a
     class of securities registered under the Securities Exchange Act of 1934.

     State and Federal Laws. An issuer's obligations under its Municipal
     Securities are subject to the provisions of bankruptcy, insolvency, and
     other laws affecting the rights and remedies of creditors. These laws may
     extend the time for payment of principal or interest, or restrict the
     Portfolio's ability to collect payments due on Municipal Securities.

     Litigation and Current Developments. The power or ability of an issuer to
     meet its obligations for the payment of interest on and principal of its
     Municipal Securities may be materially adversely affected by litigation or
     other conditions. Such litigation or conditions may from time to time have
     the effect of introducing uncertainties in the market for tax-exempt
     obligations or certain segments thereof, or may materially affect the
     credit risk with respect to particular bonds or notes. Adverse economic,
     business, legal or political developments might affect all or a substantial
     portion of a Portfolio's Municipal Securities in the same manner.


                                       22
<PAGE>   82


     New Legislation. From time to time, proposals have been introduced before
     Congress that would restrict or eliminate the Federal income tax exemption
     for interest on tax exempt bonds, and similar proposals may be introduced
     in the future. The Supreme Court has held that Congress has the
     constitutional authority to enact such legislation. It is not possible to
     determine what effect the adoption of these proposals could have on (i) the
     availability of Municipal Securities for investment by the Portfolios, and
     (ii) the value of the investment portfolios of the Portfolios.

LIMITATIONS ON THE USE OF MUNICIPAL SECURITIES

The Portfolios which invest in Municipal Securities may do so either by
purchasing them directly or by purchasing certificates of accrual or similar
instruments evidencing direct ownership of interest payments or principal
payments, or both, on Municipal Securities, provided that, in the opinion of
counsel to the initial seller of each certificate or instrument, any discount
accruing on the certificate or instrument that is purchased at a yield not
greater than the coupon rate of interest on the related Municipal Securities
will to the same extent as interest on such Municipal Securities be exempt from
Federal income tax and state income tax (where applicable) and not treated as a
preference item for individuals for purposes of the Federal alternative minimum
tax.


The Portfolios which invest in Municipal Securities may also do so by purchasing
from banks participation interests in all or part of specific holdings of
Municipal Securities. Such participation interests may be backed in whole or in
part by an irrevocable letter of credit or guarantee of the selling bank. The
selling bank may receive a fee from the Portfolio in connection with the
arrangement. A Portfolio will not purchase participation interests unless it
receives an opinion of counsel or a ruling of the Internal Revenue Service that
interest earned by it on Municipal Securities in which it holds such
participation interest is exempt from Federal income tax and state income tax
(where applicable) and not treated as a preference item for individuals for
purposes of the Federal alternative minimum tax.


NEW FINANCIAL PRODUCTS

New options and futures contracts and other financial products, and various
combinations thereof, continue to be developed. These various products may be
used to adjust the risk and return characteristics of each Portfolio's
investments. These various products may increase or decrease exposure to
security prices, interest rates, commodity prices, or other factors that affect
security values, regardless of the issuer's credit risk. If market conditions do
not perform as expected, the performance of each Portfolio would be less
favorable than it would have been if these products were not used. In addition,
losses may occur if counterparties involved in transactions do not perform as
promised. These products may expose the Portfolio to potentially greater return
as well as potentially greater risk of loss than more traditional fixed income
investments.

PERCS*

The Equity Portfolios may invest in Preferred Equity Redemption Cumulative Stock
("PERCS"). PERCS are preferred stock which convert to common stock after a
specified period of time, usually three years, and are considered the equivalent
of equity by the ratings agencies. PERCS are mandatorily convertible into common
stock. However, PERCS may be called at any time at an initial call price that
reflects a substantial premium to the stock's issue price. PERCS offer a higher
dividend than that available on the common stock, but in exchange the investors
agree to the company placing a cap on the potential price appreciation. The call
price declines daily in an amount that reflects the incremental dividend that
holders enjoy. PERCS are listed on an exchange where the common stock is listed.
*PERCS is a registered trademark of Morgan Stanley, which does not sponsor and
is in no way affiliated with One Group Investment Trust.

PREFERRED STOCK

Preferred stock is a class of stock that generally pays dividends at a specified
rate and has preference over common stock in the payment of dividends and
liquidation. Preferred stock generally does not carry voting rights. As with all
equity securities, the price of preferred stock fluctuates based on changes in a
company's financial condition and on overall market and economic conditions.


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<PAGE>   83


REAL ESTATE INVESTMENT TRUSTS ("REITS")

Certain of the Portfolios may invest in equity interests or debt obligations
issued by REITs. REITs are pooled investment vehicles which invest primarily in
income producing real estate or real estate related loans or interest. REITs are
generally classified as equity REITs, mortgage REITs or a combination of equity
and mortgage REITs. Equity REITs invest the majority of their assets directly in
real property and derive income primarily from the collection of rents. Equity
REITs can also realize capital gains by selling property that has appreciated in
value. Mortgage REITs invest the majority of their assets in real estate
mortgages and derive income from the collection of interest payments. Similar to
investment companies, REITs are not taxed on income distributed to shareholders
provided they comply with several requirements of the Code. A Portfolio will
indirectly bear its proportionate share of expenses incurred by REITs in which a
Portfolio invests in addition to the expenses incurred directly by a Portfolio.

Investing in REITs involves certain unique risks in addition to those risks
associated with investing in the real estate industry in general. Equity REITs
may be affected by changes in the value of the underlying property owned by the
REITs, while mortgage REITs may be affected by the quality of any credit
extended. REITs are dependent upon management skills, are not diversified, are
subject to heavy cash flow dependency, default by borrowers and
self-liquidation. Other possible risks include failing to qualify for tax free
pass-through of income under the Code and failing to maintain their exemption
from registration under the Act.

REITs (especially mortgage REITs) are also subject to interest rate risks. When
interest rates decline, the value of a REIT's investment in fixed rate
obligations can be expected to rise. Conversely, when interest rates rise, the
value of a REIT's investment in fixed rate obligations can be expected to
decline. In contrast, as interest rates on adjustable rate mortgage loans are
reset periodically, yields on a REIT's investment in such loans will gradually
align themselves to fluctuate less dramatically in response to interest rate
fluctuations than would investments in fixed rate obligations.

Investment in REITs involves risks similar to those associated with investing in
small capitalization companies. These risks include:

     -    limited financial resources

     -    infrequent or limited trading

     -    more abrupt or erratic price movements than larger company securities

Historically, small capitalization stocks, such as REITs, have been more
volatile in price than the larger capitalization stocks included in the S&P
Index of 500 Common Stocks.

REPURCHASE AGREEMENTS

Under the terms of a repurchase agreement, a Portfolio would acquire securities
from a seller, subject to the seller's agreement to repurchase such securities
at a mutually agreed-upon date and price. The repurchase price would generally
equal the price paid by the Portfolio plus interest negotiated on the basis of
current short-term rates, which may be more or less than the rate on the
underlying portfolio securities. The seller under a repurchase agreement will be
required to maintain the value of collateral held pursuant to the agreement at
not less than the repurchase price (including accrued interest).

If the seller defaults on its repurchase obligation or becomes insolvent, the
Portfolio holding such obligation would suffer a loss to the extent that the
proceeds from a sale of the underlying portfolio securities were less than the
repurchase price under the agreement, or to the extent that the disposition of
such securities by the Portfolio were delayed pending court action.
Additionally, there is no controlling legal precedent under U.S. law and there
may be no controlling legal precedents under the laws of certain foreign
jurisdictions confirming that a Portfolio would be entitled, as against a claim
by such seller or its receiver or trustee in bankruptcy, to retain the
underlying securities. However, with respect to repurchase agreements subject to
U.S. law, the Board of Trustees of the Trust believes that, under the regular
procedures normally in effect for custody of a Portfolio's securities subject to
repurchase agreements and under Federal laws, a court of competent jurisdiction
would rule in favor of the Trust if presented with the question. Securities
subject to repurchase agreements will be held by the Trust's custodian or
another qualified custodian or in

                                       24
<PAGE>   84


the Federal Reserve/Treasury book-entry system. Repurchase agreements are
considered by the SEC to be loans by a Portfolio under the 1940 Act.

     Repurchase Agreement Counterparties. Repurchase counterparties include
     Federal Reserve member banks with assets in excess of $1 billion and
     registered broker dealers which Banc One Investment Advisors deems
     creditworthy under guidelines approved by the Board of Trustees.

REVERSE REPURCHASE AGREEMENTS

Portfolios may borrow money for temporary purposes by entering into reverse
repurchase agreements. Under these agreements, a Portfolio would sell portfolio
securities to financial institutions such as banks and broker-dealers, and agree
to repurchase them at a mutually agreed-upon date and price. A Portfolio would
enter into reverse repurchase agreements only to avoid otherwise selling
securities during unfavorable market conditions to meet redemptions. At the time
a Portfolio entered into a reverse repurchase agreement, it would establish a
segregated custodial account. The Portfolio would deposit assets (such as cash
or liquid securities) that have a value equal to the repurchase price (including
accrued interest). The Portfolio would monitor the account to ensure that such
equivalent value was maintained. Reverse repurchase agreements involve the risk
that the market value of the securities sold by a Portfolio may decline below
the price at which the Portfolio is obligated to repurchase the securities.
Reverse repurchase agreements are considered by the SEC to be borrowings by a
Portfolio under the 1940 Act.

RESTRICTED SECURITIES

Some of the Portfolios may invest in commercial paper issued in reliance on the
exemption from registration afforded by Section 4(2) of the Securities Act of
1933 and other restricted securities. Section 4(2) commercial paper is
restricted as to disposition under federal securities law and is generally sold
to institutional investors, such as the Portfolios, who agree that they are
purchasing the paper for investment purposes and not with a view to public
distribution. Any resale by the purchaser must be in an exempt transaction.
Section 4(2) commercial paper is normally resold to other institutional
investors like the Portfolios through or with the assistance of the issuer or
investment dealers who make a market in Section 4(2) commercial paper, thus
providing liquidity. The Portfolios believe that Section 4(2) commercial paper
and possibly certain other restricted securities which meet the criteria for
liquidity established by the Trustees are quite liquid. The Portfolios intend,
therefore, to treat restricted securities that meet the liquidity criteria
established by the Board of Trustees, including Section 4(2) commercial paper
and Rule 144A Securities, as determined by Banc One Investment Advisors, as
liquid and not subject to the investment limitation applicable to illiquid
securities.

The ability of the Trustees to determine the liquidity of certain restricted
securities is permitted under a SEC Staff position set forth in the adopting
release for Rule 144A under the Securities Act of 1933 ("Rule 144A"). Rule 144A
is a nonexclusive safe-harbor for certain secondary market transactions
involving securities subject to restrictions on resale under federal securities
laws. Rule 144A provides an exemption from registration for resales of otherwise
restricted securities to qualified institutional buyers. Rule 144A was expected
to further enhance the liquidity of the secondary market for securities eligible
for resale. The Portfolios believe that the Staff of the SEC has left the
question of determining the liquidity of all restricted securities to the
Trustees. The Trustees have directed Banc One Investment Advisors to consider
the following criteria in determining the liquidity of certain restricted
securities:

     -    the frequency of trades and quotes for the security;

     -    the number of dealers willing to purchase or sell the security and the
          number of other potential buyers;

     -    dealer undertakings to make a market in the security; and

     -    the nature of the security and the nature of the marketplace trades.

Certain Section 4(2) commercial paper programs cannot rely on Rule 144A because,
among other things, they were established before the adoption of the rule.
However, the Trustees may determine for purposes of the Trust's liquidity
requirements that an issue of 4(2) commercial paper is liquid if the following
conditions, which are set forth in a 1994 SEC no-action letter and Guidelines
adopted by the Trust's Board of Trustees, are met:

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<PAGE>   85


     -    The 4(2) paper must not be traded flat or in default as to principal
          or interest;

     -    The 4(2) paper must be rated in one of the two highest rating
          categories by a least two NRSROs, or if only one NRSRO rates the
          security, by that NRSRO, or if unrated, is determined by Banc One
          Investment Advisors to be of equivalent quality; and

     -    Banc One Investment Advisors must consider the trading market for the
          specific security, taking into account all relevant factors, including
          but not limited, to whether the paper is the subject of a commercial
          paper program that is administered by an issuing and paying agent bank
          and for which there exists a dealer willing to make a market in that
          paper, or is administered by a direct issuer pursuant to a direct
          placement program; and

     -    Banc One Investment Advisors shall monitor the liquidity of the 4(2)
          commercial paper purchased and shall report to the Board of Trustees
          promptly if any such securities are no longer determined to be liquid.
          If such determination causes a Portfolio to hold more than 15% of its
          net assets in illiquid securities, the Board of Trustees shall
          consider what action, if any, should be taken on behalf of the Trust,
          unless Banc One Investment Advisors is able to dispose of illiquid
          assets in an orderly manner in an amount that reduces the Portfolio's
          holdings of illiquid assets to less than 15% of its net assets; and

     -    Banc One Investment Advisors shall report to the Board of Trustees on
          the appropriateness of the purchase and retention of liquid restricted
          securities under these Guidelines no less frequently than quarterly.

SECURITIES LENDING
To generate additional income, each of the Portfolios may lend up to 33 1/3% of
the Portfolio's total assets pursuant to agreements requiring that the loan be
continuously secured by collateral equal at all times to at least 100% of the
market value plus accrued interest on the securities lent. Collateral may
include cash, securities of the U.S. government or its agencies, shares of an
investment trust or mutual fund, letters of credit or any combination of such
collateral. The Portfolios receive payments from the borrowers equivalent to the
dividends and interest which would have been earned on the securities lent while
simultaneously seeking to earn interest on the investment of cash collateral in
U.S. government securities, shares of an investment trust or mutual fund,
commercial paper, repurchase agreements, variable and floating rate instruments,
restricted securities, asset-backed securities, and the other types of
investments permitted by the applicable Portfolio's prospectus. Collateral is
marked to market daily to provide a level of collateral at least equal to the
market value plus accrued interest of the securities lent. There may be risks of
delay in recovery of the securities or even loss of rights in the collateral
should the borrower of the securities fail financially. However, loans will only
be made to borrowers deemed by Banc One Investment Advisors to be of good
standing under guidelines established by the Trust's Board of Trustees and when,
in the judgment of Banc One Investment Advisors, the consideration which can be
earned currently from such securities loans justifies the attendant risk. Loans
are subject to termination by the Portfolios or the borrower at any time, and
therefore are not considered to be illiquid investments.
SHORT-TERM FUNDING AGREEMENTS

To enhance yield, some of the Portfolios may make limited investments in
short-term funding agreements issued by banks and highly rated U.S. insurance
companies. Short-term funding agreements issued by insurance companies are
sometimes referred to as Guaranteed Investment Contracts ("GICs"), while those
issued by banks are referred to as Bank Investment Contracts ("BICs"). Pursuant
to these agreements, a Portfolio makes cash contributions to a deposit account
at a bank or insurance company. The bank or insurance company then credits to
the Portfolio on a monthly basis guaranteed interest at either a fixed, variable
or floating rate. These contracts are general obligations of the issuing bank or
insurance company (although they may be the obligations of an insurance company
separate account) and are paid from the general assets of the issuing entity.

A Portfolio will purchase short-term funding agreements only from banks and
insurance companies which, at the time of purchase, are rated in one of the
three highest rating categories and have assets of $1 billion or more.
Generally, there is no active secondary market in short-term funding agreements.
Therefore, short-term funding agreements may be considered by the Portfolio to
be illiquid investments. To the extent that a short-term funding agreement is
determined to be illiquid, such


                                       26
<PAGE>   86


agreements will be acquired by the Portfolio only if, at the time of purchase,
no more than 15% of the Portfolio's net assets will be invested in short-term
funding agreements and other illiquid securities.


STRUCTURED INSTRUMENTS

Structured instruments are debt securities issued by agencies of the U.S.
government (such as Ginnie Mae, Fannie Mae, and Freddie Mac), banks,
corporations, and other business entities whose interest and/or principal
payments are indexed to certain specific foreign currency exchange rates,
interest rates, or one or more other reference indices. Structured instruments
frequently are assembled in the form of medium-term notes, but a variety of
forms are available and may be used in particular circumstances. Structured
instruments are commonly considered to be derivatives.

The terms of structured instruments provide that their principal and/or interest
payments are adjusted upwards or downwards to reflect changes in the reference
index while the structured instruments are outstanding. In addition, the
reference index may be used in determining when the principal is redeemed. As a
result, the interest and/or principal payments that may be made on a structured
product may vary widely, depending on a variety of factors, including the
volatility of the reference index and the effect of changes in the reference
index on principal and/or interest payments.

While structured instruments may offer the potential for a favorable rate of
return from time to time, they also entail certain risks. Structured instruments
may be less liquid than other debt securities, and the price of structured
instruments may be more volatile. If the value of the reference index changes in
a manner other than that expected by Banc One Investment Advisors, principal
and/or interest payments on the structured instrument may be substantially less
than expected. In addition, although structured instruments may be sold in the
form of a corporate debt obligation, they may not have some of the protection
against counterparty default that may be available for publicly traded debt
securities (i.e., the existence of a trust indenture). In that case, the risks
of default associated with structured instruments may be similar to those
associated with swap contracts. See "Swaps, Caps and Floors."

The Portfolios will invest only in structured securities that are consistent
with each Portfolio's investment objective, policies and restrictions and Banc
One Investment Advisors' outlook on market conditions. In some cases, depending
on the terms of the reference index, a structured instrument may provide that
the principal and/or interest payments may be adjusted below zero; however, a
Portfolio will not invest in structured instruments if the terms of the
structured instrument provide that the Portfolio may be obligated to pay more
than its initial investment in the structured instrument, or to repay any
interest or principal that has already been collected or paid back.


                                       27
<PAGE>   87

Structured instruments that are registered under the Federal securities laws may
be treated as liquid. However, many structured instruments may not be registered
under the Federal securities laws. In that event, a Portfolio's ability to
resell such a structured instrument may be more limited than its ability to
resell other Portfolio securities. The Portfolio will treat these instruments as
illiquid, and will limit its investments in these instruments to no more than
15% of its net assets, when combined with all other illiquid investments of the
Portfolio.

SWAPS, CAPS AND FLOORS

The Portfolios may enter into swaps, caps, and floors (collectively, "Swap
Contracts") on various securities (such as U.S. government securities),
securities indexes, interest rates, prepayment rates, foreign currencies or
other financial instruments or indexes, in order to protect the value of the
Portfolio from interest rate fluctuations and to hedge against fluctuations in
the floating rate market in which the Portfolio's investments are traded. The
Portfolios may enter into these transactions to manage their exposure to
changing interest rates and other market factors or for non-hedging purposes.
Some transactions may reduce each Portfolio's exposure to market fluctuations
while others may tend to increase market exposure. Although different from
options, futures and options on futures, swap contracts are used by the
Portfolios for similar purposes (i.e., risk management and hedging) and
therefore, expose the Portfolios to generally the same risks and opportunities
as those investments.

Swap contracts typically involve an exchange of obligations by two sophisticated
parties. For example, in an interest rate swap, the Portfolio may exchange with
another party their respective rights to receive interest, such as an exchange
of fixed rate payments for floating rate payments.

Currency swaps involve the exchange of respective rights to make or receive
payments in specified currencies. Mortgage swaps are similar to interest rate
swaps in that they represent commitments to pay and receive interest. The
notional principal amount, however, is tied to a reference pool or pools of
mortgages.

Caps and floors are variations on swaps. The purchase of a cap entitles the
purchaser to receive a principal amount from the party selling the cap to the
extent that a specified index exceeds a predetermined interest rate or amount.
The purchase of an interest rate floor entitles the purchaser to receive
payments on a notional principal amount from the party selling the floor to the
extent that a specified index falls below a predetermined interest rate or
amount. Caps and floors are similar in many respects to over-the-counter options
transactions, and may involve investment risks that are similar to those
associated with options transactions and options on futures contracts.

Because swap contracts are individually negotiated, they remain the obligation
of the respective counterparties, and there is a risk that a counterparty will
be unable to meet its obligations under a particular swap contract. If a
counterparty defaults on a swap contract with a Portfolio, the Portfolio may
suffer a loss. To address this risk, each Portfolio will usually enter into
interest rate swaps on a net basis, which means that the two payment streams
(one from the Portfolio to the counterparty, one to the Portfolio from the
counterparty) are netted out, with the Portfolio receiving or paying, as the
case may be, only the net amount of the two payments.

Interest rate swaps do not involve the delivery of securities, other underlying
assets, or principal, except for the purposes of collateralization as discussed
below. Accordingly, the risk of loss with respect to interest rate swaps entered
into on a net basis would be limited to the net amount of the interest payments
that the Portfolio is contractually obligated to make. If the other party to an
interest rate swap defaults, the Portfolio's risk of loss consists of the net
amount of interest payments that a Portfolio is contractually entitled to
receive. In addition, the Portfolio may incur a market value adjustment on
securities held upon the early termination of the swap. To protect against
losses related to counterparty default, the Portfolios may enter into swaps that
require transfers of collateral for changes in market value.

In contrast, currency swaps and other types of swaps may involve the delivery of
the entire principal value of one designated currency or financial instrument in
exchange for the other designated currency or financial instrument. Therefore,
the entire principal value of such swaps may be subject to the risk that the
other party will default on its contractual delivery obligations.

In addition, because swap contracts are individually negotiated and ordinarily
non-transferable, there also may be circumstances in which it would be
impossible for a Portfolio to close out its obligations under the swap contract
prior to its maturity. Under these circumstances, the Portfolio might be able to
negotiate another swap contract with a different counterparty to offset the risk


                                       28
<PAGE>   88


associated with the first swap contract. Unless the Portfolio is able to
negotiate such an offsetting swap contract, however, the Portfolio could be
subject to continued adverse developments, even after Banc One Investment
Advisors determines that it would be prudent to close out or offset the first
swap contract.

The Portfolios will not enter into any mortgage swap, interest rate swap, cap or
floor transaction unless the unsecured commercial paper, senior debt, or the
claims paying ability of the other party thereto is rated in one of the top two
rating categories by at least one NRSRO, or if unrated, determined by Banc One
Investment Advisors to be of comparable quality.

The use of swaps involves investment techniques and risks different from and
potentially greater than those associated with ordinary Portfolio securities
transactions. If Banc One Investment Advisors is incorrect in its expectations
of market values, interest rates, or currency exchange rates, the investment
performance of the Portfolios would be less favorable than it would have been if
this investment technique were not used. In addition, in certain circumstances
entry into a swap contract that substantially eliminates risk of loss and the
opportunity for gain in an "appreciated financial position" will accelerate gain
to the Portfolios.

The Staff of the SEC is presently considering its position with respect to
swaps, caps and floors as senior securities. Pending a determination by the
Staff, the Portfolios will either treat swaps, caps and floors as being subject
to their senior securities restrictions or will refrain from engaging in swaps,
caps and floors. Once the Staff has expressed a position with respect to swaps,
caps and floors, the Portfolios intend to engage in swaps, caps and floors, if
at all, in a manner consistent with such position. To the extent the net amount
of an interest rate or mortgage swap is held in a segregated account, consisting
of cash or liquid, high grade debt securities, the Portfolios and Banc One
Investment Advisors believe that swaps do not constitute senior securities under
the Investment Company Act of 1940 and, accordingly, will not treat them as
being subject to each Portfolio's borrowing restrictions. The net amount of the
excess, if any, of each Portfolio's obligations over its entitlements with
respect to each interest rate swap will be accrued on a daily basis and an
amount of cash or liquid securities having an aggregate net asset value at least
equal to the accrued excess will be maintained in a segregated account by the
Portfolios' Custodian. The Bond Portfolios generally will limit their
investments in swaps, caps and floors to 25% of their total assets.


                                       29
<PAGE>   89
TREASURY RECEIPTS

The Portfolios may purchase interests in separately traded interest and
principal component parts of U.S. Treasury obligations that are issued by banks
or brokerage firms and are created by depositing U.S. Treasury notes and U.S.
Treasury bonds into a special account at a custodian bank. Receipts include:

- -        Treasury Receipts ("TRS"),

- -        Treasury Investment Growth Receipts ("TIGRS"), and

- -        Certificates of Accrual on Treasury Securities ("CATS").

U.S. TREASURY OBLIGATIONS

The Portfolios may invest in bills, notes and bonds issued by the U.S. Treasury
and separately traded interest and principal component parts of those
obligations that are transferable through the Federal book-entry system known as
Separately Traded Registered Interest and Principal Securities ("STRIPS") and
Coupon Under Book Entry Safekeeping ("CUBES"). The Portfolios also may invest in
Inflation Indexed Treasury Obligations.

Variable And Floating Rate Instruments

Certain obligations purchased by the Portfolios may carry variable or floating
rates of interest, may involve a conditional or unconditional demand feature and
may include variable amount master demand notes.


Variable Amount Master Demand Notes are demand notes that permit the
indebtedness thereunder to vary and provide for periodic adjustments in the
interest rate according to the terms of the instrument. Because master demand
notes are direct lending arrangements between a Portfolio and the issuer, they
are not normally traded. Although there is no secondary market in the notes, a
Portfolio may demand payment of principal and accrued interest. While the notes
are not typically rated by credit rating agencies, issuers of variable amount
master demand notes (which are normally manufacturing, retail, financial,
brokerage, investment banking and other business concerns) must satisfy the same
criteria as set forth above for commercial paper. Banc One Investment Advisors
will consider the earning power, cash flow, and other liquidity ratios of the
issuers of such notes and will continuously monitor their financial status and
ability to meet payment on demand. In determining average weighted portfolio
maturity, a variable amount master demand note will be deemed to have a maturity
equal to the period of time remaining until the principal amount can be
recovered from the issuer through demand.


The Portfolios, subject to their investment objective policies and restrictions,
may acquire Variable And Floating Rate Instruments. A variable rate instrument
is one whose terms provide for the adjustment of its interest rate on set dates
and which, upon adjustment, can reasonably be expected to have a market value
that approximates its par value. A floating rate instrument is one whose terms
provide for the adjustment of its interest rate whenever a specified interest
rate changes and which, at any time, can reasonably be expected to have a market
value that approximates its par value. These instruments are frequently not
rated by credit rating agencies; however, unrated variable and floating rate
instruments purchased by a Portfolio will be determined by Banc One Investment
Advisors under guidelines established by the Trust's Board of Trustees to be of
comparable quality at the time of purchase to rated instruments eligible for
purchase under the Portfolio's investment policies. In making these
determinations, Banc One Investment Advisors will consider the earning power,
cash flow and other liquidity ratios of the issuers of these instruments (these
issuers include financial, merchandising, bank holding and other companies) and
will continuously monitor their financial condition. There may be no active
secondary market with respect to a particular variable or floating rate
instrument purchased by a Portfolio. The absence of an active secondary market
could make it difficult for the Portfolio to dispose of the variable or floating
rate instrument involved in the event the issuer of the instrument defaulted on
its payment obligations, and the Portfolio could, for this or other reasons,
suffer a loss to the extent of the default. Variable or floating rate
instruments may be secured by bank letters of credit or other assets. A
Portfolio will purchase a variable or floating rate instrument to facilitate
portfolio liquidity or to permit investment of the Portfolio's assets at a
favorable rate of return.

Limitations on the Use of Variable and Floating Rate Notes. Variable and
floating rate instruments for which no readily available market exists will
be purchased in an amount which, together with securities with legal or
contractual restrictions on

                                       30
<PAGE>   90
resale or for which no readily available market exists (including repurchase
agreements providing for settlement more than seven days after notice), exceeds
15% of the Portfolio's net assets only if these instruments are subject to a
demand feature that will permit the Portfolio to receive payment of the
principal within seven days after demand by the Portfolio. There is no limit
on the extent to which a Portfolio may purchase demand instruments that are not
illiquid. If not rated, these instruments must be found by Banc One Investment
Advisors under guidelines established by the Trust's Board of Trustees, to be of
comparable quality to instruments that are rated high quality. A rating may be
relied upon only if it is provided by a nationally recognized statistical rating
organization that is not affiliated with the issuer or guarantor of the
instruments. For a description of ratings, see the Appendix.

WARRANTS

Warrants are securities, typically issued with preferred stock or bonds, that
give the holder the right to buy a proportionate amount of common stock at a
specified price, usually at a price higher than the market price at the time of
issuance of the warrant. The right may last for a period of years or
indefinitely.

WHEN-ISSUED SECURITIES AND FORWARD COMMITMENTS

The Portfolios may purchase securities on a "when-issued" and forward
commitment basis. When a Portfolio agrees to purchase securities on this basis,
the Portfolio's custodian will set aside cash or liquid portfolio securities
equal to the amount of the commitment in a separate account. The Portfolios may
purchase securities on a when-issued basis when deemed by Banc One Investment
Advisors to present attractive investment opportunities. When-issued securities
are purchased for delivery beyond the normal settlement date at a stated price
and yield, thereby involving the risk that the yield obtained will be less than
that available in the market at delivery. The Portfolios generally will not pay
for these securities or earn interest on them until received. Although the
purchase of securities on a when-issued basis is not considered to be
leveraging, it has the effect of leveraging. When Banc One Investment Advisors
purchases a when-issued security, the Custodian will set aside cash or liquid
securities to satisfy the purchase commitment. In this case, a Portfolio may be
required subsequently to place additional assets in the separate account to
assure that the value of the account remains equal to the amount of the
Portfolio's commitment. The Portfolio's net assets may fluctuate to a greater
degree when it sets aside portfolio securities to cover purchase commitments
than when it sets aside cash. In addition, when a Portfolio engages in
"when-issued" transactions, it relies on the seller to complete the trade.
Failure of the seller to do so may result in the Portfolio's incurring a loss or
missing the opportunity to obtain a price considered to be advantageous.

In a forward commitment transaction, the Portfolios contract to purchase
securities for a fixed price at a future date beyond customary settlement time.
The Portfolios are required to hold and maintain in a segregated account until
the settlement date, cash, U.S. government securities or liquid high-grade debt
obligations in an amount sufficient to meet the purchase price. Alternatively,
the Portfolios may enter into offsetting contracts for the forward sale of other
securities that they own. The purchase of securities on a when-issued or forward
commitment basis involves a risk of loss if the value of the security to be
purchased declines prior to the settlement date.

LIMITATIONS ON THE USE OF WHEN ISSUED SECURITIES AND FORWARD COMMITMENTS. No
Portfolio intends to purchase "when-issued" securities for speculative purposes
but only for the purpose of acquiring portfolio securities. Because a Portfolio
will set aside cash or liquid portfolio securities to satisfy its purchase
commitments in the manner described, the Portfolio's liquidity and the ability
of Banc One Investment Advisors to manage the Portfolio might be affected in the
event its commitments to purchase when-issued securities ever exceeded 40% of
the value of its assets. Commitments to purchase when-issued securities will
not, under normal market conditions, exceed 25% of a Portfolio's total assets,
and a commitment will not exceed 90 days. A Portfolio may dispose of a
when-issued security or forward commitment prior to settlement if Banc One
Investment Advisors deems it appropriate to do so.
                                       31
<PAGE>   91


INVESTMENT RESTRICTIONS

         The following investment restrictions are "fundamental policies" of
each Portfolio. The investment objectives of each Portfolio (which can be found
in response to the first question in each of the Risk/Return Summaries) are also
"fundamental policies." Fundamental policies cannot be changed with respect to a
Portfolio without the consent of the holders of a majority of the Portfolio's
outstanding shares. The term "majority of the outstanding shares" means the vote
of (i) 67% or more of the Portfolio's shares present at a meeting, if more than
50% of the outstanding shares of the Portfolio are present or represented by
proxy, or (ii) more than 50% of the Portfolio's outstanding shares, whichever is
less.

         Each Portfolio may not:

         1. Purchase securities of any issuer (except securities issued or
guaranteed by the United States, its agencies or instrumentalities and
repurchase agreements involving such securities) if as a result more than 5% of
the total assets of the Portfolio would be invested in the securities of such
issuer or the Portfolio would own more than 10% of the outstanding voting
securities of such issuer. This restriction applies to 75% of the Portfolio's
assets. With respect to the Equity Index Portfolio, no more than 10% of the
Portfolio's assets may be invested in securities issued or guaranteed by the
United States, its agencies or instrumentalities. For purposes of this
limitation, a security is considered to be issued by the government entity
whose assets and revenues guarantee or back the security. With respect to
private activity bonds or industrial development bonds backed only by the
assets and revenues of a nongovernmental user, such user would be considered
the issuer. Repurchase agreements held in margin deposits and segregated
accounts for futures contracts are not considered securities issued or
guaranteed by the United States, its agencies or instrumentalities ("Government
Securities") for purposes of the Equity Index Portfolio's 10% limitation on
investments in Government Securities.

         2. Purchase any securities which would cause more than 25% of the total
assets of the Portfolio to be invested in the securities of one or more issuers
conducting their principal business activities in the same industry, provided
that this limitation does not apply to investments in the obligations issued or
guaranteed by the U.S. Government or its agencies and instrumentalities and
repurchase agreements involving such securities. For purposes of this limitation
(i) utility companies will be divided according to their services, for example,
gas, gas transmission, electric and telephone will each be considered a separate
industry; and (ii) wholly-owned finance companies will be considered to be in
the industries of their parents if their activities are primarily related to
financing the activities of their parents.

         3. Make loans, except that a Portfolio may (i) purchase or hold debt
instruments in accordance with its investment objectives and policies; (ii)
enter into repurchase agreements; and (iii) engage in securities lending as
described in the Prospectus and in the Statement of Additional Information.

         4. Purchase securities on margin or sell securities short.

         5. Underwrite the securities of other issuers except to the extent that
a Portfolio may be deemed to be an underwriter under certain securities laws in
the disposition of "restricted securities."

         6. Purchase or sell commodities or commodity contracts, except that the
Portfolios may purchase or sell financial futures contracts for bona fide
hedging and other permissible purposes.

         7. Purchase participations or other direct interests in oil, gas or
mineral exploration or development programs (although investments by the
Portfolios in marketable securities of companies engaged in such activities are
not hereby precluded).

         8. Invest in any issuer for purposes of exercising control or
management.

         9. Purchase securities of other investment companies except as
permitted by the Investment Company Act of 1940 and the rules and regulations
thereunder.

         10. Purchase or sell real estate (however, each Portfolio may, to the
extent appropriate to its investment objective, purchase securities secured by
real estate or interests therein or securities issued by companies investing in
real estate or interests therein).

         11. Borrow money or issue senior securities, except that each Portfolio
may borrow from banks or enter into reverse repurchase agreements for temporary
purposes in amounts up to 10% of the value of its total assets at the time of
such borrowing; or mortgage, pledge, or hypothecate any assets, except in
connection with any such borrowing and in amounts not in excess of the


                                       32
<PAGE>   92


lesser of the dollar amounts borrowed or 10% of the value of the Portfolio's
total assets at the time of its borrowing. A Portfolio will not purchase
securities while its borrowings (including reverse repurchase agreements) in
excess of 5% of its total assets are outstanding. The foregoing percentages will
apply at the time of the purchase of a security.


         The following investment restriction is non-fundamental and therefore
can be changed by the Board of Trustees without prior shareholder approval.


         No Portfolio may invest in illiquid securities in an amount exceeding,
in the aggregate, 15% of the Portfolio's net assets. An illiquid security is a
security which cannot be disposed of promptly (within seven days) and in the
usual course of business without a loss, and includes repurchase agreements
maturing in excess of seven days, time deposits with a withdrawal penalty,
non-negotiable instruments and instruments for which no market exists.


         The foregoing percentage applies at the time of purchase of a security.
Banc One Investment Advisors shall report to the Board of Trustees promptly if
any of a Portfolio's investments are no longer determined to be liquid or if the
market value of Portfolio assets has changed if such determination or change
causes a Portfolio to hold more than 15% of its net assets in illiquid
securities in order for the Board of Trustees to consider what action, if any,
should be taken on behalf of the Trust, unless Banc One Investment Advisors is
able to dispose of illiquid assets in an orderly manner in an amount that
reduces the Portfolio's holdings to less than 15% of its net assets.


PORTFOLIO TURNOVER

         The portfolio turnover rate for each Portfolio is calculated by
dividing the lesser of purchases or sales of portfolio securities for the year
by the monthly average value of the portfolio securities. The calculation
excludes all securities whose maturities at the time of acquisition were one
year or less. The Portfolio turnover rates for the years ended December 31, 1999
and 1998 for the following Portfolios were as follows:

<TABLE>
<CAPTION>

                 PORTFOLIO                           1999          1998
                 ---------                           ----          ----
<S>              <C>                                 <C>           <C>
                 Government Bond Portfolio           55.15%        40.4%
                 Balanced Portfolio                  60.13%        32.1%
                 Large Cap Growth Portfolio          94.18%        61.0%
                 Mid Cap Growth Portfolio           167.61%        87.7%
                 Equity Index Portfolio               1.50%         2.3%*
                 Bond Portfolio                       7.50%          NA**
                 Diversified Mid Cap Portfolio       58.77%          NA**
                 Mid Cap Value Portfolio            198.01%          NA**
                 Diversified Equity Portfolio        91.90%          NA**
</TABLE>


                 *NOT ANNUALIZED

                 ** The Portfolio turnover rates for the Predecessor Funds of
                 the Bond Portfolio, the Diversified Mid Cap Portfolio, the Mid
                 Cap Value Portfolio and the Diversified Equity Portfolio are
                 shown in the following table.


                                       33
<PAGE>   93
         The portfolio turnover rates for the year ended December 31, 1998 for
the Predecessor Funds of the Bond Portfolio, the Diversified Mid Cap Portfolio,
the Mid Cap Value Portfolio, and the Diversified Equity Portfolio were as
follows:

<TABLE>
<CAPTION>
                 PORTFOLIO                                 1998
                 ---------                                 ----
<S>              <C>                                      <C>
                 Bond Portfolio                           14.5%
                 Diversified Mid Cap Portfolio            26.2%
                 Mid Cap Value Portfolio                  39.3%
                 Diversified Equity Portfolio             43.2%
</TABLE>
The increase in portfolio turnover in 1999 for the Mid Cap Growth Portfolio, the
Diversified Mid Cap Portfolio, the Mid Cap Value Portfolio, and the Diversified
Equity Portfolio is due to the higher volatility of the equity markets. Higher
turnover rates will generally result in higher brokerage expenses. Portfolio
turnover may vary greatly from year to year as well as within a particular year.

ADDITIONAL TAX INFORMATION CONCERNING THE PORTFOLIOS

         It is the policy of each Portfolio to meet the requirements necessary
to qualify as a "regulated investment company" under Subchapter M of the
Internal Revenue Code of 1986, as amended (the "Code"). By following such
policy, each Portfolio expects to eliminate or reduce to a nominal amount the
federal income taxes to which it may be subject.

         In order to qualify as a regulated investment company, each Portfolio
must, among other things, (1) derive at least 90% of its gross income from
dividends, interest, payments with respect to securities loans, and gains from
the sale or other disposition of stock or securities, foreign currencies or
other income (including gains from options, futures or forward contracts)
derived with respect to its business of investing in stock, securities or
currencies, and (2) diversify its holdings so that at the end of each quarter of
its taxable year (i) at least 50% of the market value of the Portfolio's assets
is represented by cash or cash items, United States Government securities,
securities of other regulated investment companies, and other securities
limited, in respect of any one issuer, to an amount not greater than 5% of the
value of the Portfolio's total assets and 10% of the outstanding voting
securities of such issuer, and (ii) not more than 25% of the value of its total
assets is invested in the securities of any one issuer (other than United States
Government securities or the securities of other regulated investment companies)
or of two or more issuers that the Portfolio controls and that are engaged in
the same, similar, or related trades or businesses. These requirements may limit
the range of the Portfolio's investments. If a Portfolio qualifies as a
regulated investment company, it will not be subject to federal income tax on
the part of its income distributed to shareholders, provided the Portfolio
distributes during its taxable year at least (a) 90% of its investment company
taxable income, and (b) 90% of the excess of (i) its tax-exempt interest income
less (ii) certain deductions attributable to that income. Each Portfolio intends
to make sufficient distributions to Shareholders to meet this requirement.

         For a discussion of the tax consequences of variable annuity contracts,
refer to the prospectuses or other documents you received when you purchased
your variable life or variable annuity contracts. Variable annuity contracts
purchased through insurance company separate accounts provide for the
accumulation of all earnings from interest, dividends, and capital appreciation
without current federal income tax liability for the owner. Depending on the
variable annuity or variable life contract, distributions from the contract may
be subject to ordinary income tax and, in addition, on distributions before age
59 1/2, a 10% penalty tax. Only the portion of a distribution attributable to
income on the investment in the contract is subject to federal income tax.
Investors should consult with competent tax advisors for a more complete
discussion of possible tax consequences in a particular situation.

         In addition to the diversification requirements applicable to all
regulated investment companies discussed above, section 817(h) of the Code
imposes certain diversification standards on the underlying assets of variable
annuity contracts held in the Portfolios. The Code provides that a variable
annuity contract shall not be treated as an annuity contract for any period (and
any subsequent period) for which the investments are not, in accordance with
regulations prescribed by the Treasury Department, adequately diversified.
Disqualification of the variable annuity contract as an annuity contract would
result in immediate imposition of federal income tax on variable annuity
contract owners with respect to earnings allocable to the contract. This
liability would generally arise prior to the receipt of payments under the
contract. Section 817(h)(2) of the Code is a safe harbor provision which
provides that variable annuity contracts meet the diversification requirements
if, as of the close of each quarter, the underlying assets meet the
diversification standards for a regulated investment company and no more than
fifty-five percent
                                       34
<PAGE>   94

(55%) of the total assets consists of cash, cash items, U.S. Government
securities and securities of other regulated investment companies.

         The Treasury Department has issued Regulations (Treas. Reg. 1.817-5),
that establish diversification requirements for the investment portfolios
underlying variable annuity contracts. The Regulations amplify the
diversification requirements for variable annuity contracts set forth in Section
817(h) of the Code and provide an alternative to the safe harbor provision
described above. Under the Regulations, an investment portfolio will be deemed
adequately diversified if (i) no more than 55 percent of the value of the total
assets of the portfolio is represented by any one investment; (ii) no more than
70 percent of such value is represented by any two investments; (iii) no more
than 80 percent of such value is represented by any three investments; and (iv)
no more than 90 percent of such value is represented by any four investments.
For purposes of these Regulations all securities of the same issuer, all
interests in the same real estate project and all interests in the same
commodity are treated as a single investment. The Code provides that for
purposes of determining whether or not the diversification standards imposed on
the underlying assets of variable annuity contracts by Section 817(h) of the
Code have been met, "each United States government agency or instrumentality
shall be treated as a separate issuer."

         Treasury regulations provide that a variable annuity contract will be
able to look through to the assets held by a Portfolio for the purpose of
meeting the diversification test if the Portfolio meets certain requirements.
Each Portfolio will be managed in such a manner as to comply with the
diversification requirements and to allow the variable annuity contracts to be
treated as owning a proportionate share of such Portfolio's assets. It is
possible that in order to comply with the diversification requirements, less
desirable investment decisions may be made which would affect the investment
performance of such Portfolio.The Code generally imposes a non-deductible excise
tax on regulated investment companies that do not distribute in each calendar
year (regardless of whether they otherwise have a non-calendar taxable year) an
amount equal to 98% of their "ordinary income" (as defined) for the calendar
year plus 98% of their "capital gain net income" (as defined) for the 1-year
period ending on October 31 of such calendar year. The balance, if any, of such
income must be distributed during the next calendar year. If distributions
during a calendar year were less than the required amount, a particular
Portfolio would be subject to a non-deductible excise tax equal to 4% of the
deficiency. A Portfolio is exempt from this excise tax if at all times during
the calendar year each shareholder in the Portfolio was either a trust described
in Section 401(a) of the Code and exempt from tax under section 501(a) of the
Code or a segregated asset account of a life insurance company held in
connection with variable contracts.



                                       35
<PAGE>   95

         The above discussion of the federal income tax treatment of the
Portfolios assumes that all the insurance company accounts holding shares of a
Portfolio are either segregated asset accounts underlying variable contracts as
defined in Section 817(d) of the Code or the general account of an insurance
company as defined in Section 816 of the Code. Additional tax consequences may
apply to holders of variable contracts investing in a Portfolio if any of those
contracts are not treated as annuity, endowment or life insurance contracts.


                                   VALUATION


VALUATION OF THE PORTFOLIOS

         Securities traded on a securities exchange are valued at the last
quoted sale price on the principal exchange, or if no sale, at their fair value
as determined in good faith under consistently applied procedures authorized by
the Board of Trustees. Securities traded only in the over-the-counter (OTC)
market are valued at the last quoted sale price, or if there is no sale, at the
mean of the last quoted bid and ask prices provided by an independent pricing
agent. Corporate debt securities and debt securities of U.S. issuers, including
municipal securities, are valued by a combination of daily quotes and matrix
evaluations provided by an independent pricing service approved by the Board of
Trustees. Inactive securities that have little or no trading activity are
evaluated by the independent pricing services by obtaining dealer quotes.
Futures contracts and options thereon traded on a commodities exchange or board
of trade are valued at the last sales price at the close of trading, or if there
was no sale, at the mean of the latest quoted bid and ask prices. Securities for
which either reliable market quotations are not readily available or for which
the pricing agent does not provide a valuation that in the judgment of the
Portfolio's investment adviser, represents fair value, shall each be valued in
accordance with procedures authorized by the Board of Trustees.

         The Portfolios may invest in repurchase agreements with institutions
that Banc One Investment Advisors has determined are creditworthy. Each
repurchase agreement is recorded at cost. The value of a foreign security is
determined in its national currency as of the close of trading on the foreign
exchange or other principal market on which it is traded, which value is then
converted into its U.S. Dollar equivalent at the foreign exchange rate reported
by the independent pricing agent as of the close of the London Exchange.

SECURITY VALUATION SPECIFICS

- -    U.S. Government Securities, Mortgage Pools, Collateralized Mortgage
     Obligations, Asset Backed Securities, Corporate Bonds, and Municipal
     Securities shall be valued by an independent pricing vendor. A mean of the
     latest bid and ask quotations or the last sale in the case of a listed bond
     shall be used to evaluate the security. Fixed income securities with less
     than 61 days to maturity shall be valued at amortized cost.

- -    Securities for which the primary market is a foreign exchange shall be
     valued at the last available quoted sale price on said exchange for the
     current day or, if traded on the London Exchange and are not part of the
     FTSE 100, the securities will receive the mid-market close. Quotations of
     foreign securities shall be converted into the U.S. dollar equivalent using
     a spot currency value provided by an independent pricing vendor.

- -    Securities for which readily available market quotations are not available
     or for which the pricing agent provides a valuation that in the judgment of
     the Trust's Pricing Committee does not represent a fair value, shall be
     valued in accordance with the Trust's "Securities Valuation Procedures."

ADDITIONAL INFORMATION REGARDING THE CALCULATION OF PER SHARE NET ASSET VALUE

         The net asset value of each Portfolio is determined and its Shares are
priced as of the times specified in the Portfolios' Prospectus. The net asset
value per Share of each Portfolio is calculated by determining the value of the
interest in the securities and other assets of the Portfolio, less liabilities
and dividing such amount by the number of Shares of the Portfolio outstanding.


                                       36
<PAGE>   96


ADDITIONAL PURCHASE AND REDEMPTION INFORMATION

         Shares of the Portfolios are sold continuously to insurance company
separate accounts. The Portfolios may suspend the right of redemption or
postpone the date of payment for Shares during any period when (a) trading on
the New York Stock Exchange (the "Exchange") is restricted by applicable rules
and regulations of the Securities and Exchange Commission, (b) the Exchange is
closed for other than customary weekend and holiday closings, (c) the Securities
and Exchange Commission has by order permitted such suspension, or (d) an
emergency exists as determined by the Securities and Exchange Commission.

DIVIDENDS

All dividends are distributed to separate accounts on a quarterly basis and will
ordinarily be automatically reinvested in Portfolio shares. Under Fund
Participation Agreements between the Trust and various insurance companies,
certain insurance companies on behalf of separate accounts may elect to receive
dividend distributions in cash.


                            MANAGEMENT OF THE TRUST


TRUSTEES & OFFICERS

         Overall responsibility for management of the Trust rests with the Board
of Trustees of the Trust who were elected by the Shareholders of the Trust. The
Trustees are responsible for making major decisions about each Portfolio's
investment objectives and policies, but delegate the day-to-day administration
of the Portfolios to the officers of the Trust. There are currently eight
Trustees, all of whom, except John F. Finn, are not "interested persons" of the
Trust within the meaning of that term under the 1940 Act. The Trustees of the
Trust, their addresses, their ages, and principal occupations during the past
five years are set forth below.


                                       37
<PAGE>   97

<TABLE>
<CAPTION>


                                            POSITION
                                            HELD WITH
NAME AND ADDRESS                  AGE       THE TRUST        PRINCIPAL OCCUPATION DURING THE PAST FIVE YEARS
- ----------------                  ---       ---------        -----------------------------------------------
<S>                               <C>       <C>              <C>
Peter C. Marshall                 57        Trustee          From March, 2000 to present, Senior Vice
DCI Marketing, Inc.                                          President, W.D. Howard, Inc. (corporate parent
2727 W. Good Hope Rd.                                        of DCI Marketing, Inc.). From November, 1993 to
Milwaukee, WI 53209                                          March, 2000, President, DCI Marketing, Inc.

Charles I. Post                   72        Trustee          From July, 1986 to present, self employed as a
7615 4th Avenue West                                         consultant.
Bradenton, FL 34209

Frederick W. Ruebeck              60        Trustee          From January, 2000 to present, self-employed
Eli Lilly & Company                                          as a consultant. From June, 1988 to December, 1999,
Lilly Corporate Center                                       Director of Investments, Eli Lilly and Company.
307 East McCarty
Indianapolis, IN 46258
Robert A. Oden, Jr.               53        Trustee          From 1995 to present, President, Kenyon College;
Office of the President                                      from 1989 to 1995, Headmaster, The Hotchkiss
Ransom Hall                                                  School.
Kenyon College
Gambier, OH 43022

*John F. Finn                     52        Trustee          Since 1975, President of Gardner, Inc.
President                                                    (wholesale distributor to outdoor
Gardner, Inc.                                                power equipment industry)
1150 Chesapeake Ave.
Columbus, Ohio 43212

Marilyn McCoy                     51        Trustee          Vice President of Administration
Northwestern University                                      and Planning, Northwestern
Office of the Vice President                                 University (1985 to present).
Administration Planning                                      Trustee of Pegasus Variable Funds
633 Clark St. Crown 2-112                                    since 1996.
Evanston, IL 60208

Julius L. Pallone                 69        Trustee          President, J.L. Pallone Associates
J.L. Pallone Associates                                      (1994 to present). Trustee of
3000 Town Center                                             Pegasus Variable Funds since 1987.
Suite 732
Southfield, MI 48075

Donald L. Tuttle                  65        Trustee          Vice President (1995 to present)
Association for Investment                                   and Senior Vice President (1992 to
Management and Research                                      1995), Association for Investment
PO Box 3668                                                  Management and Research. Trustee
560 Ray C. Hunt Drive                                        of Pegasus Variable Funds since 1993.
Charlottesville, VA 22903
</TABLE>

*John F. Finn is an "interested person" as that term is defined in the
Investment Company Act of 1940.

The Trustees of the Portfolios receive fees and expenses for each meeting of the
Board of Trustees attended. The Compensation Table below sets forth the total
compensation to the Trustees from the Trust for the fiscal year ended December
31, 1999.

                                       38
<PAGE>   98


<TABLE>
<CAPTION>


                                                       COMPENSATION TABLE


NAME OF PERSON,                       AGGREGATE             PENSION OR          ESTIMATED ANNUAL         TOTAL COMPENSATION
POSITION                             COMPENSATION           RETIREMENT            BENEFITS UPON          FROM THE PORTFOLIO
                                       FROM THE          BENEFITS ACCRUED          RETIREMENT                  COMPLEX(1)
                                    PORTFOLIOS(2)           AS PART OF
                                                             PORTFOLIO
                                                             EXPENSES
<S>                                 <C>                     <C>                  <C>                     <C>
Peter C. Marshall,                    $3,250                     NA                     NA                     $80,750
Trustee


Charles I. Post, Trustee              $3,250                     NA                     NA                     $75,000


Frederick W. Ruebeck,                 $3,250(3)                  NA                     NA                     $76,250
Trustee


Robert A. Oden, Jr.,                  $3,250                     NA                     NA                     $76,250
Trustee


John F. Finn, Trustee                 $3,250(4)                  NA                     NA                     $76,250

Marilyn McCoy,                        $2,500(5)                  NA                     NA                     $70,250
Trustee


Julius L. Pallone,                    $2,500(6)                  NA                     NA                     $70,250
Trustee

Donald L. Tuttle,                     $2,500(7)                  NA                     NA                     $70,250
Trustee
</TABLE>

(1)       "Portfolio Complex" comprises the 9 Portfolios of the Trust, as well
          as the Funds of One Group(R) Mutual Funds as of December 31, 1999.
          Compensation for the "Portfolio Complex" is for the fiscal year ended
          December 31, 1999.
(2)       Pursuant to a Deferred Compensation Plan for Trustees of One Group
          Investment Trust (the "Plan") adopted at the November 19, 1998 Board
          of Trustee's meeting, the Trustees may defer all or a part of their
          compensation payable by the Trust. Under the Plan, the Trustees may
          specify Class I Shares of one or more funds of One Group Mutual Funds
          to be used to measure the performance of a Trustee's deferred
          compensation account. A Trustee's deferred compensation account will
          be paid at such times as elected by the Trustee subject to certain
          mandatory payment provisions in the Plan (e.g., death of a Trustee).

(3)      Includes $3,250 of deferred compensation.

(4)      Includes $3,250 of deferred compensation.

(5)      Includes $2,500 of deferred compensation.

(6)      Includes $2,500 of deferred compensation.

(7)      Includes $1,500 of deferred compensation.


                                       39
<PAGE>   99



The officers of the Portfolios receive no compensation directly from the
Portfolios for performing the duties of their offices. The officers of the
Trust, their addresses, ages and principal occupations during the past five
years are shown below:
<TABLE>
<CAPTION>

                                          POSITION(S) HELD
NAME AND ADDRESS                 AGE      WITH THE TRUST         PRINCIPAL OCCUPATION DURING PAST 5 YEARS
- ----------------                 ---      --------------         ----------------------------------------
<S>                              <C>      <C>                    <C>
Mark A. Beeson                   42       President              Mr. Beeson has served as Senior Managing Director of Banc
1111 Polaris Parkway, Suite B2                                   One Investment Advisors Corporation since August, 1994.
Columbus, Ohio 43240                                             Mr. Beeson has also served as Chief Executive Officer
                                                                 and President of One Group Administrative Services, Inc.
                                                                 since October 26, 1999.

Robert L. Young                  37       Vice President         Mr. Young has served as Managing Director of Banc One
1111 Polaris Parkway, Suite B2            and Treasurer          Investment Advisors Corporation since December, 1996.
Columbus, Ohio 43240                                             Prior to that, Mr. Young was a senior audit manager of
                                                                 Deloitte & Touche until December, 1996. Previously, Mr. Young
                                                                 also worked for Dayton, Power & Light as the Director of
                                                                 Internal Audit. Mr. Young has also served as Vice President and
                                                                 Treasurer of One Group Administrative Services, Inc. since
                                                                 October 26, 1999.
Mark S. Redman                   45       Secretary              Mr. Redman has been an employee of BISYS Fund Services, Inc.
1111 Polaris Parkway, Suite B2                                   since 1989. He has also served as President of The One Group
Columbus, Ohio 43240                                             Services Company since November, 1997 and as an officer of The
                                                                 One Group Services Company from June, 1995 to November, 1997.
Gary R. Young                    30       Assistant              Mr. Young has served as a Director of Mutual Fund Administration
1111 Polaris Parkway, Suite B2            Treasurer and          for Banc One Investment Advisors Corporation since December,
Columbus, Ohio 43240                      Assistant              1998.  Prior to that, Mr. Young was Vice  President and Manager
                                          Secretary              of the Mutual Fund Accounting, Custody and Financial
                                                                 Administration Group at First Chicago NBD Investment Management
                                                                 Company.  He has also worked for One Group Administrative
                                                                 Services, Inc. since January 1, 2000.

Jessica K. Ditullio              37       Assistant              Ms. Ditullio has served as an attorney in the law department
Bank One Corporation                      Secretary              of Bank One Corporation since August, 1990.
100 East Broad Street
Columbus, Ohio 43215

Nancy E. Fields                  50       Assistant              Ms. Fields has served as Project Manager at Banc One Investment
1111 Polaris Parkway, Suite B2            Secretary              Advisors Corporation since July, 1999. Prior to that, Ms. Fields
Columbus, Ohio 43240                                             served  as Vice  President  with  the Ohio Bankers Association
                                                                 from  January, 1998 until July, 1999. Prior to that, Ms. Fields
                                                                 was Vice President of BISYS Fund Services, Inc. Ms. Fields has
                                                                 also  worked  for  One  Group Administrative Services, Inc. since
                                                                 January 1, 2000.

Michael V. Wible                 37       Assistant              Mr. Wible has served as an attorney in the law department of
Bank One Corporation                      Secretary              Bank One Corporation since September, 1994.
100 East Broad Street
Columbus, Ohio 43215

James F. Laird, Jr.              42       Vice President         Mr. Laird was elected Vice President-General Manager of Nationwide
Three Nationwide Plaza                    and Assistant          Advisory Services, Inc., on April 5, 1995. Prior to being elected
Columbus, Ohio 43215                      Treasurer              General Manager, Mr.Laird served as Treasurer of Nationwide
                                                                 Advisory Services, Inc. since November, 1987.

</TABLE>



                                       40
<PAGE>   100

<TABLE>
<CAPTION>

                                          POSITION(S) HELD
NAME AND ADDRESS                 AGE      WITH THE TRUST         PRINCIPAL OCCUPATION DURING PAST 5 YEARS
- ----------------                 ---      --------------         ----------------------------------------
<S>                              <C>      <C>                   <C>
Karen R. Tackett                 32       Vice President         Since August, 1998, Ms. Tackett has been Director Strategic
Three Nationwide Plaza                    and Assistant          Development of Nationwide Advisory Services, Inc. From March, 1996
Columbus, Ohio 43215                      Secretary              until July, 1998, Ms. Tackett was Accounting Manager for Nationwide
                                                                 Advisory Services, Inc. Prior to that, Ms. Tackett was Audit
                                                                 Manager and held various other positions with
                                                                 PricewaterhouseCoopers LLP (formerly Coopers & Lybrand, L.L.P.)

</TABLE>

All officers listed above are "interested persons" of the Portfolios as defined
in the Investment Company Act of 1940.

INVESTMENT ADVISOR

         Investment advisory services to each of the Portfolios are provided by
Banc One Investment Advisors. Banc One Investment Advisors makes the investment
decisions for the assets of the Portfolios and continuously reviews, supervises
and administers the Portfolio's investment program, subject to the supervision
of, and policies established by, the Trustees. The Portfolios' shares are not
sponsored, endorsed or guaranteed by, and do not constitute obligations or
deposits of any bank affiliate of Banc One Investment Advisors and are not
insured by the FDIC or issued or guaranteed by the U.S. Government or any of its
agencies.

         As of December 31, 1999, Banc One Investment Advisors, an indirect
wholly-owned subsidiary of Bank One Corporation, a bank holding company located
in the state of Illinois, managed over $127 billion in assets. Bank One
Corporation has affiliate banking organizations in Arizona, Colorado, Florida,
Illinois, Indiana, Kentucky, Louisiana, Michigan, Ohio, Oklahoma, Texas, Utah,
West Virginia and Wisconsin. In addition, Bank One Corporation has several
affiliates that engage in data processing, venture capital, investment and
merchant banking, and other diversified services including trust management,
investment management, brokerage, equipment leasing, mortgage banking, consumer
finance, and insurance.

         Banc One Investment Advisors represents a consolidation of the
investment advisory staffs of a number of bank affiliates of Bank One
Corporation, which have considerable experience in the management of open-end
management investment company portfolios, including One Group Mutual Funds (an
open-end management investment company which consists of 54 separate Funds as of
December 31, 1999, some of which have similar names as the Portfolios of the
Trust and are managed similarly to such Portfolios) since 1985.

         All investment advisory services are provided to the Portfolios by Banc
One Investment Advisors pursuant to an Amended and Restated Investment Advisory
Agreement dated February 17, 1999 (the "Advisory Agreement"). Unless sooner
terminated, the Advisory Agreement will continue in effect until August 31,
2000, and will continue in effect as to a particular Portfolio indefinitely if
such continuance is approved at least annually by the Trust's Board of Trustees
or by vote of a majority of the outstanding Shares of such Portfolio (as defined
under "ADDITIONAL INFORMATION-- Miscellaneous" in this Statement of Additional
Information), and a majority of the Trustees who are not parties to the
respective investment advisory agreements or interested persons (as defined in
the Investment Company Act of 1940) of any party to the respective investment
advisory agreements by votes cast in person at a meeting called for such
purpose. The Advisory Agreement may be terminated as to a particular Portfolio
at any time on 60 days' written notice without penalty by:

         1.   the Trustees,



         2.   vote of a majority of the outstanding Shares of that Portfolio, or



         3.   the Portfolio's Advisor, as the case may be.



The Advisory Agreement also terminates automatically in the event of any
assignment, as defined in the Investment Company Act of 1940.


                                       41
<PAGE>   101


         The Advisory Agreement provides that Banc One Investment Advisors shall
not be liable for any error of judgment or mistake of law or for any loss
suffered by the Trust in connection with the performance of the Advisory
Agreement, except a loss resulting from a breach of fiduciary duty with respect
to the receipt of compensation for services or a loss resulting from willful
misfeasance, bad faith, or gross negligence on the part of the Advisor in the
performance of its duties, or from reckless disregard by it of its duties and
obligations under the Advisory Agreement.

         Banc One Investment Advisors is entitled to a fee, which is calculated
daily and paid monthly, at the following percentages of the average daily net
assets of each Portfolio:

NAME OF PORTFOLIO                              PERCENTAGE
- -----------------                              ----------
Bond Portfolio                                    0.60%
Government Bond Portfolio                         0.45%
Balanced Portfolio                                0.70%
Mid Cap Growth Portfolio                          0.65%
Large Cap Growth Portfolio                        0.65%
Equity Index Portfolio                            0.30%
Diversified Equity Portfolio                      0.74%
Diversified Mid Cap Portfolio                     0.74%
Mid Cap Value Portfolio                           0.74%

         Banc One Investment Advisors has agreed to waive all or part of its
fees in order to limit the Portfolios' total operating expenses on an annual
basis to not more than the following percentages of the average daily net assets
of each of the Portfolios:

NAME OF PORTFOLIO                               PERCENTAGE
- -----------------                               ----------

Bond Portfolio                                     0.75%
Government Bond Portfolio*                         0.75%
Balanced Portfolio*                                1.00%
Mid Cap Growth Portfolio*                          1.10%
Large Cap Growth Portfolio*                        1.00%
Equity Index Portfolio                             0.55%
Diversified Equity Portfolio                       0.95%
Diversified Mid Cap Portfolio                      0.95%
Mid Cap Value Portfolio                            0.95%

* These fee waivers are voluntary and may be terminated at any time.

For the fiscal years ended December 31, 1999, 1998, and 1997, the following
Portfolios paid investment advisory fees as follows:

<TABLE>
<CAPTION>

FISCAL YEAR ENDED DECEMBER 31,

                                                 1999                           1998                     1997
                                                 ----                           ----                     ----
PORTFOLIO                                 NET          WAIVED           NET             WAIVED       NET        WAIVED
- ---------                                 ---          ------           ---             ------       ---        ------
<S>                                <C>                 <C>         <C>             <C>           <C>           <C>
Government Bond Portfolio          $     247,016         --        $    128,907    $    9,393    $ 78,818      $  23,446
Balanced Portfolio                 $   1,016,442         --        $    490,270    $    2,862    $  189,332    $  44,906
Mid Cap Growth Portfolio           $     677,449         --        $    431,700    $       --    $  233,609    $   4,114
Large Cap Growth Portfolio         $   1,821,847         --        $    948,112    $       --    $  458,066    $   1,114
</TABLE>
                                       42

<PAGE>   102

<TABLE>
<CAPTION>
Fiscal Year Ended December 31,

                                          1999                               1998                         1997
                                          ----                               ----                         ----
Portfolio                            Net           Waived                Net         Waived         Net       Waived
- ---------                            ---           ------                ---         ------         ---       ------
<S>                               <C>            <C>                    <C>        <C>               <C>         <C>
Equity Index Portfolio            $ 86,991       $10,237                $  --      $ 15,432         NA*         NA*
Bond Portfolio                    $221,900**     $55,226**              NA***         NA***         NA***       NA***
Diversified Mid Cap Portfolio     $100,907**     $     0**              NA***         NA***         NA***       NA***
Mid Cap Value Portfolio           $129,307**     $   795**              NA***         NA***         NA***       NA***
Diversified Equity Portfolio      $340,573**     $ 8,591**              NA***         NA***         NA***       NA***
</TABLE>


*   The Equity Index Portfolio commenced operations on May 1, 1998.
**  For the period from the substitution until December 31, 1999.
*** No fees were paid to Banc One Investment Advisors Corporation prior to the
substitution of the Predecessor Funds on March 31, 1999.

Prior to March 31, 1999, First Chicago NBD Investment Management Company
("FCNIMCO") provided investment management services to the Predecessor Funds of
the Bond Portfolio, the Diversified Mid Cap Portfolio, the Mid Cap Value
Portfolio, and the Diversified Equity Portfolio. FCNIMCO was an indirect
subsidiary of Bank One Corporation and an affiliate of Banc One Investment
Advisors. For the fiscal years ended December 31, 1999, 1998, and 1997, the
following Portfolios paid investment advisory fees to FCNIMCO as follows:


<TABLE>
<CAPTION>
FISCAL YEAR ENDED DECEMBER 31,

                                                 1999*                          1998                     1997
                                                 -----                          ----                     ----
PORTFOLIO                                 NET          WAIVED           NET             WAIVED       NET        WAIVED
- ---------                                 ---          ------           ---             ------       ---        ------
<S>                                   <C>            <C>             <C>             <C>            <C>        <C>
Bond Portfolio                        $  57,476      $   3,259       $  164,396      $  26,975      $59,313    $   2,899
Diversified Mid Cap Portfolio         $   6,879      $  19,137       $    5,234      $  82,956      $ 2,396    $  58,356
Mid Cap Value Portfolio               $  16,041      $  16,043       $   50,740      $  57,553      $20,834    $  17,342
Diversified Equity Portfolio          $  82,912      $   4,958       $  263,173      $  33,240      $96,428    $  37,901
</TABLE>


*For the period from January 1, 1999 until the substitution on March 31, 1999.


                                       43
<PAGE>   103


CODE OF ETHICS

         The Trust and Banc One Investment Advisors have adopted codes of ethics
under Rule 17j-1 of the Investment Company Act of 1940. The Trust's code of
ethics includes policies which require "access persons" (as defined in Rule
17j-1) to: (i) place the interest of Trust Shareholders first; (ii) conduct
personal securities transactions in a manner that avoids any actual or potential
conflict of interest or any abuse of a position of trust and responsibility; and
(iii) refrain from taking inappropriate advantage of his or her position with
the Trust or with a Portfolio. The Trust's code of ethics prohibits any access
person from: (i) employing any device, scheme or artifice to defraud the Trust
or a Portfolio; (ii) making to the Trust any untrue statement of a material fact
or omit to state to the Trust or a Portfolio a material fact necessary in order
to make the statements made, in light of the circumstances under which they are
made, not misleading; (iii) engaging in any act, practice, or course of business
which operates or would operate as a fraud or deceit upon the Trust or a
Portfolio; or (iv) engaging in any manipulative practice with respect to the
Trust or a Portfolio. The Trust's code of ethics permits personnel subject to
the code to invest in securities, including securities that may be purchased or
held by a Portfolio so long as such investment transactions are not in
contravention of the above noted policies and prohibitions.

         Banc One Investment Advisors' code of ethics requires that all
employees must: (i) place the interest of the accounts which are managed by Banc
One Investment Advisors first; (ii) conduct all personal securities transactions
in a manner that is consistent with the code of ethics and the individual
employee's position of trust and responsibility; and (iii) refrain from taking


                                       44
<PAGE>   104

inappropriate advantage of their position. Banc One Investment Advisors' code of
ethics permits personnel subject to the code to invest in securities including
securities that may be purchased or held by a Portfolio subject to certain
restrictions. However, all employees are required to preclear securities trades
(except for certain types of securities such as mutual fund shares and U.S.
government securities).

                                       45
<PAGE>   105

PORTFOLIO TRANSACTIONS

         Pursuant to the Advisory Agreement, Banc One Investment Advisors
determines, subject to the general supervision of the Board of Trustees of the
Portfolios and in accordance with each Portfolio's investment objective and
restrictions, which securities are to be purchased and sold by each such
Portfolio and which brokers are to be eligible to execute its portfolio
transactions. Purchases and sales of portfolio securities with respect to the
Bond Portfolios usually are principal transactions in which portfolio securities
are purchased directly from the issuer or from an underwriter or market maker
for the securities. Purchases from underwriters of portfolio securities include
a commission or concession paid by the issuer to the underwriter and purchases
from dealers serving as market makers may include the spread between the bid and
asked price. Transactions on stock exchanges (other than certain foreign stock
exchanges) involve the payment of negotiated brokerage commissions. Transactions
in the over-the-counter market are generally principal transactions with
dealers. With respect to the over-the-counter market, the Portfolios, where
possible, will deal directly with the dealers who make a market in the
securities involved except in those circumstances where better price and
execution are available elsewhere. While Banc One Investment Advisors generally
seeks competitive spreads or commissions, the Portfolios may not necessarily pay
the lowest spread or commission available on each transaction, for reasons
discussed below. During each of the past three fiscal years, the brokerage
commissions paid by the Portfolios were as follows:

<TABLE>
<CAPTION>

           PORTFOLIO                             AGGREGATE BROKERAGE COMMISSIONS
                                           1999             1998         1997
                                           ----             ----         ----
<S>                                    <C>             <C>           <C>
Balanced Portfolio                     $ 98,922       $ 47,608    $ 34,413
Large Cap Growth Portfolio             $370,126       $109,720    $ 40,915
Equity Index Portfolio                 $  7,831       $  6,217          NA*
Diversified Equity Portfolio           $114,909       $ 76,844    $ 46,091
Mid Cap Growth Portfolio               $256,852       $ 92,962    $125,008
Diversified Mid Cap Portfolio          $ 28,237       $ 21,501    $ 19,787
Mid Cap Value Portfolio                $118,892       $ 17,896    $ 16,891
</TABLE>



         * The Equity Index Portfolio commenced operations on May 1, 1998.


As of December 31, 1999, the following Portfolios held investments in securities
of their regular broker-dealers as follows:

<TABLE>
<CAPTION>

                                                                        SHARES OR
PORTFOLIO                                 SECURITY                   PRINCIPAL AMOUNT       VALUE
- ----------------------------------------------------------------------------------------------------
<S>                           <C>                                    <C>                 <C>
Balanced Portfolio            Goldman Sachs Group, 7.20%, 03/01/07        300,000         288,310.80
                              Morgan Stanley Dean Witter, & Co.            12,980       1,852,895.00
                              Morgan Stanley Group, 6.50%, 03/30/01       200,000         199,424.80
====================================================================================================
Mid Cap Growth Portfolio      Legg Mason, Inc.                             12,000         435,000.00
====================================================================================================
Large Cap Growth Portfolio    Morgan Stanley Dean Witter, & Co.            12,300       1,755,825.00
====================================================================================================
Equity Index Portfolio        Merrill Lynch & Co.                           1,000          83,500.00
                              State Street Corp.                              400          29,225.00
====================================================================================================
Diversified Equity Portfolio  Morgan Stanley Dean Witter, & Co.             8,340       1,190,535.00
====================================================================================================
Bond Portfolio                Goldman Sachs Group, 6.25%, 02/01/03        500,000         485,082.00
====================================================================================================
</TABLE>

                                      46
<PAGE>   106
       Allocation of transactions, including their frequency, to various
dealers is determined by Banc One Investment Advisors with respect to the
Portfolios based on its best judgment and in a manner deemed fair and reasonable
to Shareholders. The primary consideration is prompt execution of orders in an
effective manner at the most favorable price. Subject to this consideration,
dealers who provide supplemental investment research to Banc One Investment
Advisors may receive orders for transactions by the Portfolios. Information so
received is in addition to and not in lieu of services required to be performed
by Banc One Investment Advisors and does not reduce the advisory fees payable to
Banc One Investment Advisors. Such information may be useful to Banc One
Investment Advisors in serving both the Portfolios and other clients and,
conversely, supplemental information obtained by the placement of business of
other clients may be useful to Banc One Investment Advisors in carrying out its
obligations to the Portfolios. In the last fiscal year, Banc One Investment
Advisors directed brokerage commissions to brokers who provided research
services to Banc One Investment Advisors. Total compensation paid to such
brokers amounted to $2,424,457.28.
          The Portfolios will not execute portfolio transactions through,
acquire portfolio securities issued by, make savings deposits in, or enter into
repurchase or reverse repurchase agreements with Banc One Investment Advisors or
its affiliates except as may be permitted under the Investment Company Act of
1940, and will not give preference to correspondents of Bank One Corporation
subsidiary banks with respect to such transactions, securities, savings
deposits, repurchase agreements, and reverse repurchase agreements.

          Investment decisions for each Portfolio are made independently from
those for the other Portfolios or any other investment company or account
managed by Banc One Investment Advisors. Any such other investment company or
account may also invest in the same securities as the Portfolios. When a
purchase or sale of the same security is made at substantially the same time on
behalf of a given Portfolio and another Portfolio, investment company or account
the transaction will be averaged as to price, and available investments
allocated as to amount, in a manner which Banc One Investment Advisors believes
to be equitable to the Portfolio(s) and such other investment company or
account. In some instances, this investment procedure may adversely affect the
price paid or received by a Portfolio or the size of the position obtained by a
Portfolio. To the extent permitted by law, Banc One Investment Advisors may
aggregate the securities to be sold or purchased by it for a Portfolio with
those to be sold or purchased by it for other Portfolios or for other investment
companies or accounts in order to obtain best execution. As provided by the
Advisory Agreement, in making investment recommendations for the Portfolios,
Banc One Investment Advisors will not inquire or take into consideration whether
an issuer of securities proposed for purchase or sale by the Portfolios is a
customer of Banc One Investment Advisors or its parent or subsidiaries or
affiliates and, in dealing with its commercial customers, Banc One Investment
Advisors and its parent, subsidiaries, and affiliates will not inquire or take
into consideration whether securities of such customers are held by the
Portfolios.

ADMINISTRATOR

          Effective January 1, 2000, One Group Administrative Services, Inc.,
1111 Polaris Parkway, Columbus, Ohio 43240 began serving as administrator for
the Trust ("One Group Administrative Services" or the "Administrator"). One
Group Administrative Services is an affiliate of Banc One Investment Advisors,
the advisor of the Trust, and an indirect wholly-owned subsidiary of Bank One
Corporation.

          The Administrator assists in supervising all operations of each
Portfolio to which it serves (other than those performed under the Advisory
Agreement, the Custodian Agreement and the Transfer Agency Agreement for that
Portfolio). Under the Administration Agreement, the Administrator has agreed to
maintain the necessary office space for the Portfolios, to price the Portfolio
securities of each Portfolio it serves and compute the net asset value and net
income of the Portfolios on a daily basis, to maintain each Portfolio's
financial accounts and records, and to furnish certain other services required
by the Portfolios with respect to each Portfolio. The Administrator prepares
annual and semi-annual reports to the Securities and Exchange Commission,
prepares federal and state tax returns, and generally assists in all aspects of
the Trust's operations other than those performed under the Advisory Agreement,
the Custodian Agreement and the Transfer Agency Agreement. Under the


                                       47
<PAGE>   107


Administration Agreement, the Administrator may, at its expense, subcontract
with any entity or person concerning the provision of services under the
Administration Agreement.

          Unless sooner terminated, the Administration Agreement between the
Trust and One Group Administrative Services will continue in effect through
November 1, 2000. The Administration Agreement thereafter shall be renewed
automatically for successive one year terms, unless written notice not to renew
is given by the non-renewing party to the other party at least sixty days prior
to the expiration of the then-current term. The Administration Agreement may be
terminated with respect to the Trust only upon mutual agreement of the parties
to the Administration Agreement and for cause (as defined in the Administration
Agreement) by the party alleging cause, on not less than sixty days' notice by
the Board of Trustees or by One Group Administrative Services.

          The Administrator is entitled to a fee for its services, which is
calculated daily and paid monthly, at the annual rates specified below:

          For all Portfolios except the Equity Index Portfolio:

          -    .18% on the first $250 million in Trust assets (except for the
               Equity Index Portfolio)

          -    .14% on Trust assets in excess of $250 million (other than assets
               in the Equity Index Portfolio)

          For the Equity Index Portfolio:

          -    .14% on Equity Index Portfolio assets.

          The Administration Agreement provides that the Administrator shall not
be liable for any error of judgment or mistake of law or any loss suffered by
the Portfolios in connection with the matters to which the Administration
Agreement relates, except a loss resulting from willful misfeasance, bad faith,
or gross negligence in the performance of its duties, or from the reckless
disregard by it of its obligations and duties thereunder.

          Prior to January 1, 2000, Nationwide Advisory Services, Inc. Three
Nationwide Plaza, Columbus, Ohio 43215 ("NAS") served as Administrator to each
Portfolio pursuant to an administration agreement with the Trust. (NAS is a
wholly-owned subsidiary of Nationwide Life Insurance Company, which in turn is a
wholly-owned subsidiary of Nationwide Financial Services, Inc., a holding
company of the Nationwide Insurance Enterprise).

          For the fiscal years ended December 31, 1999, 1998, and 1997, the
following Portfolios paid administration fees to NAS as follows:

<TABLE>
<CAPTION>
FISCAL YEAR END DECEMBER 31,
                                                    1999              1998              1997
                                                    ----              ----              ----
<S>                                            <C>                <C>              <C>
Government Bond Portfolio                      $     97,129       $     69,649      $   42,036
Balanced Portfolio                             $    255,799       $    158,161      $   64,914
Mid Cap Growth Portfolio                       $    184,404       $    151,830      $   86,256
Large Cap Growth Portfolio                     $    493,954       $    330,612      $  169,132
Equity Index Portfolio                         $     45,373       $      7,202              NA*
Bond Portfolio                                 $     79,398***              NA**            NA**
Diversified Equity Portfolio                   $     80,961***              NA**            NA**
Diversified Mid Cap Portfolio                  $     23,418***              NA**            NA**
Mid Cap Value Portfolio                        $     30,188***              NA**            NA**

</TABLE>


                                       48
<PAGE>   108

*   The Equity Index Portfolio commenced operations on May 1, 1998.

**  FCNIMCO and BISYS Fund Services, Inc. ("BISYS") rather than NAS served as
    co-administrators to the Predecessor Funds of the Bond Portfolio, the
    Diversified Mid Cap Portfolio, the Mid Cap Value Portfolio, and the
    Diversified Equity Portfolio for the fiscal years ended December 31, 1997
    and December 31, 1998.
*** Represents amounts paid to NAS from April 1, 1999 through December 31,
    1999. For the period from January 1, 1999 through March 31, 1999 (the
    date of the substitution of the Predecessor Funds, the following Portfolios
    paid administration fees to FCNIMCO as follows:

                                            Fees for period
                                          from January 1, 1999
           Portfolio                     through March 31, 1999
          -----------                  -------------------------

        Bond Portfolio                          $22,756
        Diversified Equity Portfolio            $21,967
        Diversified Mid Cap Portfolio           $ 6,504
        Mid Cap Value Portfolio                 $ 8,021

FCNIMCO and BISYS served as co-administrators to the Predecessor Funds of the
Bond Portfolio, the Diversified Mid Cap Portfolio, the Mid Cap Value Portfolio,
and the Diversified Equity Portfolio. For the fiscal years ended December 31,
1999, 1998 and 1997, the following Portfolios paid administration fees to
FCNIMCO and BISYS as follows:



                                       49
<PAGE>   109

<TABLE>
<CAPTION>

FISCAL YEAR ENDED DECEMBER 31,

                                                              1999*                   1998                  1997
                                                              -----                   ----                  ----
PORTFOLIO                                               NET        WAIVED         NET      WAIVED      NET       WAIVED
- ---------                                               ---        ------         ---      ------      ---       ------
<S>                                                <C>           <C>          <C>          <C>         <C>        <C>
Bond Portfolio                                     $  22,756     $--          $   71,764   $--         $23,329    $--
Diversified Mid Cap Portfolio                      $   6,504     $--          $   22,048   $--         $15,188    $--
Mid Cap Value Portfolio                            $   8,021     $--          $   27,073   $--         $ 9,544    $--
Diversified Equity Portfolio                       $  21,967     $--          $   74,103   $--         $33,582    $--

* For the period from January 1, 1999 until the substitution of the Predecessor Funds on March 31, 1999.
</TABLE>



SUB-ADMINISTRATORS

         For the period beginning November 14, 1998 and ending March 31, 1999,
NAS served as sub-administrator to the Predecessor Funds and received fees equal
to 0.15% of the average net assets of the Predecessor Funds from the Predecessor
Funds' administrator.

         The Board of Trustees of the Trust approved a Sub-Administration
Agreement between Banc One Investment Advisors and NAS that was effective on
April 1, 1999. Under the contract, Banc One Investment Advisors was entitled to
a fee equal to 0.05% of the average net assets of the Trust. For the period from
April 1, 1999 through December 31, 1999, NAS paid Banc One Investment Advisors
fees for subadministration equal to $311,456.64. The contract terminated on
December 31, 1999 with the termination of the administration agreement between
the Trust and NAS.

CUSTODIAN, SUB-CUSTODIAN AND TRANSFER AGENT

          Custodian. State Street Bank and Trust Company ("State Street"), P.O.
Box 8500, Boston, MA 02266-8500 acts as custodian for the Portfolios under a
Custodian Agreement with the Trust (the "Custodian Agreement"). Under the
Custodian Agreement, State Street:

         (i)   maintains a separate account or accounts in the name of each
               Portfolio;

         (ii)  makes receipts and disbursements of money on behalf of each
               Portfolio;

         (iii) collects and receives all income and other payments and
               distributions on account of the Portfolios' portfolio securities;
               responds to correspondence from security brokers and others
               relating to its duties; and

          (iv) makes periodic reports to the Board of Trustees concerning the
               Portfolios' operations.

State Street may, at its own expense, open and maintain a sub-custody account or
accounts on behalf of the Trust, provided that State Street shall remain liable
for the performance of all of its duties under the Custodian Agreement.

NBD Bank ("NBD"), an indirect wholly-owned subsidiary of Bank One Corporation,
served as Custodian for the Predecessor Funds pursuant to a custodian agreement.

                                       50
<PAGE>   110
         Sub-Custodian. Bank One Trust Company, N.A. (the "Sub-Custodian")
serves as Sub-Custodian in connection with the Trust's securities lending
activities, pursuant to a Subcustodian Agreement, dated as of June 11, 1998
between the Trust, State Street and Bank One Trust Company and a Securities
Lending Agreement, dated as of June 15, 1998 between the Trust, Banc One
Investment Advisors, and the Sub-Custodian. The Sub-Custodian is an indirect
subsidiary of Bank One Corporation and an affiliate of Banc One Investment
Advisors. The Sub-Custodian is entitled to a fee from the Trust, which is
calculated on an annual basis and accrued daily, equal to:

          -    .05% of the value of collateral received from the Borrower for
               each securities loan of U.S. Government and Agency Securities;
               and

          -    .10% of the value of collateral received from the Borrower for
               each loan of equities and corporate bonds.

         Use of Depositories. Rules adopted under the Investment Company Act of
1940 permit the Portfolios to maintain their securities and cash in the custody
of certain eligible banks and securities depositories.

         Transfer Agent. State Street Bank and Trust Company ("State Street"),
225 Franklin Street, Boston, Massachusetts 02110, serves as Transfer Agent for
each Portfolio pursuant to a Transfer Agency and Service Agreement with the
Trust (the "Transfer Agency Agreement"). Under the Transfer Agency Agreement,
State Street has agreed to perform the customary services of a transfer agent
and dividend disbursing agent including issuing and redeeming Shares of the
Portfolios, maintaining Shareholder accounts, and preparing and mailing account
statements and activity statements to Shareholders.

EXPERTS

Independent Public Accountants. The financial statements for the fiscal year
ended December 31, 1999 have been audited by PricewaterhouseCoopers LLP, 100
East Broad Street, Columbus, Ohio 43215, independent public accountants to the
Trust, as indicated in their reports with respect thereto, and are incorporated
herein by reference, in reliance upon the authority of said firm as experts in
accounting and auditing in giving said reports.

The financial statements for the Predecessor Funds for the fiscal year ended
December 31, 1998 have been audited by the predecessor auditors for such
Predecessor Funds.

Fund Counsel. The law firm of Ropes & Gray, One Franklin Square, 1301 K Street,
N.W., Suite 800 East, Washington, D.C. 20005-3333 is counsel to the Trust.


                                       51
<PAGE>   111

                             ADDITIONAL INFORMATION


DESCRIPTION OF SHARES

The Trust is a Massachusetts business trust. The Trust's Declaration of Trust
was filed with the Secretary of State of the Commonwealth of Massachusetts on
June 7, 1993 and authorizes the Board of Trustees to issue an unlimited number
of Shares, which are units of beneficial interest, without par value. The
Trust's Declaration of Trust authorizes the Board of Trustees to establish one
or more series of Shares of the Trust. The Trust presently includes nine series
of Shares which represent interests in the following Portfolios:

         1. Bond Portfolio
         2. Government Bond Portfolio
         3. Balanced Portfolio
         4. Mid Cap Growth Portfolio
         5. Large Cap Growth Portfolio
         6. Equity Index Portfolio
         7. Diversified Equity Portfolio
         8. Diversified Mid Cap Portfolio
         9. Mid Cap Value Portfolio

         The Declaration of Trust may not be amended without the affirmative
vote of a majority of the outstanding shares of the Trust, except that the
Trustees may amend the Declaration of the Trust without the vote or consent of
shareholders to:

         (1) designate series of the Trust;

         (2) change the name of the Trust; or

         (3) supply any omission, cure, correct, or supplement any ambiguous,
defective, or inconsistent provision or to conform the Declaration of Trust to
the requirements of applicable federal and state laws or regulations if they
deem it necessary.

         Shares are fully paid and non-assessable, except as set forth below.
When a majority is required, it means the lesser of 67% or more of the shares
present at a meeting when the holders of more than 50% of the outstanding shares
are present or represented by proxy, or more than 50% of the outstanding shares.
Shares have no subscription or preemptive rights and only those conversion or
exchange rights as the Board of Trustees may grant in its discretion. When
issued for payment as described in the Prospectus and this Statement of
Additional Information, the Trust's Shares will be fully paid and
non-assessable. In the event of a liquidation or dissolution of the Trust,
Shares of a Portfolio are entitled to receive the assets available for
distribution belonging to the Portfolio, and a proportionate distribution, based
upon the relative asset values of the respective Portfolios, of any general
assets not belonging to any particular Portfolio which are available for
distribution.

         Rule 18f-2 under the Investment Company Act of 1940 provides that any
matter required to be submitted to the holders of the outstanding voting
securities of an investment company, such as the Trust, shall not be deemed to
have been effectively acted upon unless approved by the holders of a majority of
the outstanding Shares of each Portfolio affected by the matter. For purposes of
determining whether the approval of a majority of the outstanding Shares of a
Portfolio is required in connection with a matter, a Portfolio is deemed to be
affected by a matter unless it is clear that the interests of each Portfolio in
the matter are identical, or that the matter does not affect any interest of the
Portfolio. Under Rule 18f-2, the approval of an investment advisory agreement or
any change in investment policy would be effectively acted upon with respect to
a Portfolio only if approved by a majority of the outstanding Shares of the
Portfolio. However, Rule 18f-2 also provides that the ratification of
independent public accountants, the approval of principal underwriting
contracts, and the election of Trustees may be effectively acted upon by
Shareholders of the Trust voting without regard to series.


                                       52
<PAGE>   112


         The Trust may suspend the right of redemption only under the following
unusual circumstances:

         (i) when the New York Stock Exchange is closed (other than weekends and
holidays) or trading is restricted;

         (ii) when an  emergency  exists,  making  disposal of  portfolio
securities or the valuation of net assets not reasonably practicable; or

         (iii) during any period when the Securities and Exchange Commission has
by order permitted a suspension of redemption for the protection of
shareholders.

SHAREHOLDER AND TRUSTEE LIABILITY

         Under Massachusetts law, holders of units of beneficial interest in a
business trust may, under certain circumstances, be held personally liable as
partners for the obligations of the Trust. However, the Trust's Declaration of
Trust provides that Shareholders shall not be subject to any personal liability
for the obligations of the Trust, and that every written agreement, obligation,
instrument, or undertaking made by the Trust shall contain a provision to the
effect that the Shareholders are not personally bound thereunder. The
Declaration of Trust provides for indemnification out of the trust property of
any Shareholder held personally liable solely by reason of his being or having
been a Shareholder. Thus, the risk of a Shareholder incurring financial loss on
account of Shareholder liability is limited to circumstances in which the Trust
itself would be unable to meet its obligations.

         The Declaration of Trust states further that no Trustee, officer, or
agent of the Trust shall be personally liable in connection with the
administration or preservation of the assets of the trust or the conduct of the
Trust's business; nor shall any Trustee, officer, or agent be personally liable
to any person for any action or failure to act except for his own bad faith,
willful misfeasance, gross negligence, or reckless disregard of his duties. The
Declaration of Trust also provides that all persons having any claim against the
Trustees or the Trust shall look solely to the assets of the Trust for payment.

SHAREHOLDERS

         All Shares of the Portfolios will be purchased by insurance company
separate accounts to fund variable annuity and variable life contracts
("Insurance Contracts"). For information concerning the purchase and redemption
of Shares by Separate Accounts, you should refer to the prospectus or other
documents that you received when you purchased your variable life or variable
insurance contract.
         As of April 4, 2000, the Trust believes that no Shareholder owned
beneficially more than 25% of the outstanding shares of any Portfolio of the
Trust.

                                       53
<PAGE>   113


                                 5% SHAREHOLDERS

In addition, as of April 4, 2000, the following persons were the owners of
more than 5% of the outstanding Shares of the following Portfolios:

<TABLE>
<CAPTION>
                                                                                          PERCENT          TYPE OF
NAME AND ADDRESS                                     PORTFOLIO                           OWNERSHIP        OWNERSHIP
- ----------------                                     ---------                           ---------        ---------
<S>                                                  <C>                                                  <C>
HARTFORD LIFE & ANNUITY                              Bond Portfolio                        66.97%         Record
SEPARATE ACCOUNT SIX
C/O CAROL LEWIS C-4
200 HOPMEADOW ST
WEATOGUE CT  06089-9793

NATIONWIDE LIFE & ANNUITY INSURANCE                  Bond Portfolio                        25.72%         Record
NWVA-C
C/O IPO PORTFOLIO ACCOUNTING
PO BOX 182029
COLUMBUS OH  43218-2029

NATIONWIDE LIFE & ANNUITY INSURANCE                  Government Bond Portfolio             96.01%         Record
NWVA-C
C/O IPO PORTFOLIO ACCOUNTING
PO BOX 182029
COLUMBUS OH  43218-2029

NATIONWIDE LIFE & ANNUITY INSURANCE                  Balanced Portfolio                    99.28%         Record
NWVA-C
C/O IPO PORTFOLIO ACCOUNTING
PO BOX 182029
COLUMBUS OH  43218-2029

NATIONWIDE LIFE & ANNUITY INSURANCE                  Large Cap Growth Portfolio            90.48%         Record
NWVA-C
C/O IPO PORTFOLIO ACCOUNTING
PO BOX 182029
COLUMBUS OH 43218-2029

HARTFORD LIFE & ANNUITY                              Large Cap Growth Portfolio             7.36%         Record
SEPARATE ACCOUNT SIX
C/O CAROL LEWIS C-4
200 HOPMEADOW ST
WEATOGUE CT  06089-9793

NATIONWIDE LIFE & ANNUITY INSURANCE                  Equity Index Portfolio                96.53%         Record
NWVA-C
C/O IPO PORTFOLIO ACCOUNTING
PO BOX 182029
COLUMBUS OH 43218-2029

HARTFORD LIFE & ANNUITY                              Diversified Equity Portfolio          78.17%         Record
SEPARATE ACCOUNT SIX
C/O CAROL LEWIS C-4
200 HOPMEADOW ST
WEATOGUE CT  06089-9793

NATIONWIDE LIFE & ANNUITY INSURANCE                  Diversified Equity Portfolio          18.37%         Record
NWVA-C
C/O IPO PORTFOLIO ACCOUNTING
PO BOX 182029
COLUMBUS OH  43218-2029

NATIONWIDE LIFE & ANNUITY INSURANCE                  Mid Cap Growth Portfolio              98.41%         Record
NWVA-C
C/O IPO PORTFOLIO ACCOUNTING
PO BOX 182029
COLUMBUS OH 43218-2029
</TABLE>

                                       54
<PAGE>   114
<TABLE>
<S>                                                  <C>                                  <C>             <C>
HARTFORD LIFE & ANNUITY                              Diversified Mid Cap Portfolio        70.92%          Record
SEPARATE ACCOUNT SIX
C/O CAROL LEWIS C-4
200 HOPMEADOW ST
WEATOGUE CT  06089-9793

NATIONWIDE LIFE & ANNUITY INSURANCE                  Diversified Mid Cap Portfolio        25.79%          Record
NWVA-C
C/O IPO PORTFOLIO ACCOUNTING
PO BOX 182029
COLUMBUS OH  43218-2029

HARTFORD LIFE & ANNUITY                              Mid Cap Value Portfolio              81.19%          Record
SEPARATE ACCOUNT SIX
C/O CAROL LEWIS C-4
200 HOPMEADOW ST
WEATOGUE CT  06089-9793

NATIONWIDE LIFE & ANNUITY INSURANCE                  Mid Cap Value Portfolio              15.39%          Record
NWVA-C
C/O IPO PORTFOLIO ACCOUNTING
PO BOX 182029
COLUMBUS OH  43218-2029
</TABLE>



                                       55
<PAGE>   115



         As of April 4, 2000, the Trust believes that the trustees and
officers of the Trust, as a group, owned less than 1% of the shares of any
Portfolio of the Trust.

CALCULATION OF PERFORMANCE DATA

         The Portfolios may quote their performance in various ways. All
performance information supplied by the Portfolios in advertising is historical
and is not intended to indicate future returns. The Portfolios' share prices,
yields and total returns fluctuate in response to market conditions and other
factors, and the value of Portfolio shares when redeemed may be more or less
than their original cost.

         From time to time, Banc One Investment Advisors and/or Administrator
may voluntarily waive all or a portion of their respective fee(s) and absorb
certain expenses for the Portfolios. Performance information contained in
advertisements includes the effect of deducting a Portfolio's expenses, but may
not include charges and expenses attributable to the variable annuity, variable
life or pension/retirement plan through which you have made your investment (a
"Funding Vehicle"). Because the Portfolios' shares may only be purchased through
a Funding Vehicle, you should carefully review your insurance contracts for
information on fees and expenses associated with the Funding Vehicle through
which your shares have been purchased. Excluding such fees and expenses from the
Portfolios' performance quotations has the effect of increasing the performance
quoted.

         A Portfolio's respective total return and average annual total return
are determined by calculating the change in the value of a hypothetical $1,000
investment in a Portfolio for each of the periods shown. Total return for a
Portfolio is computed by determining the average annual compounded rate of
return over the applicable period that would equate the initial amount invested
to the ending redeemable value of the investment. The ending redeemable value
includes dividends and capital gain distributions reinvested at net asset value.
The resulting percentages indicate the positive or negative investment results
that an investor would have experienced from changes in net asset value and
reinvestment of dividends and distributions.

         Performance will fluctuate from time to time and is not necessarily
representative of future results. Accordingly, a Portfolio's performance may not
provide for comparison with bank deposits or other investments that pay a fixed
return for a stated period of time. Performance is a function of a Portfolio's
quality, composition, and maturity, as well as expenses allocated to the
Portfolio.

         Statistical and performance information compiled and maintained by CDA
Technologies, Inc. ("CDA") and Interactive Data Corporation may also be used.
CDA is a performance evaluation service that maintains a statistical data base
of performance, as reported by a diverse universe of independently-managed
mutual funds. Interactive Data Corporation is a statistical access
service that maintains a database of various industry indicators, such as
historical and current price/earning information and individual stock and fixed
income security price and return information.

         Current interest rate and yield information on government debt
obligations of various durations, as reported weekly by the Federal Reserve
(Bulletin H. 15), may also be used. Current rate information on municipal debt
obligations of various durations, as reported daily by the Bond Buyer, may also
be used. The Bond Buyer is published daily and is an industry-accepted source
for current municipal bond market information.

         Comparative information on the Consumer Price Index may also be
included. This Index, as prepared by the U.S. Bureau of Labor Statistics, is the
most commonly used measure of inflation. It indicates the cost fluctuations of a
representative group of consumer goods. It does not represent a return on
investment. From time to time, all of the Portfolios may quote actual total
return performance in advertising and other types of literature compared to
results reported by the Dow Jones Industrial Average.

         The Dow Jones Industrial Average is an industry-accepted unmanaged
index of generally conservative securities used for measuring general market
performance. The performance reported will reflect the reinvestment of all
distributions on a quarterly basis and market price fluctuations. The index does
not take into account any brokerage commissions or other fees.


                                       56
<PAGE>   116


         The Portfolios may also promote the yield and/or total return
performance and use comparative performance information computed by and
available from certain industry and general market research and publications,
such as Lipper Analytical Services, Inc.

         The Portfolios may quote actual yield and/or total return performance
in advertising and other types of literature compared to the performance of
various indices and investments for which reliable performance data is
available, as well as averages, performance rankings or other information
prepared by recognized mutual fund statistical services or alternative financial
products available to prospective investors. The performance comparisons may
include the average return of various bank instruments, some of which may carry
certain return guarantees offered by leading banks and thrifts as monitored by
Bank Rate Monitor, and those of corporate bond and government security price
indices of various durations.


         The average annual total return for the one year ended December 31,
1999 and for the life of each Portfolio was as follows:
<TABLE>
<CAPTION>

                                                                             DATE
                                                                           PORTFOLIO
                                                                           COMMENCED
                                             ONE YEAR         LIFE         OPERATION
                                             --------         ----         ---------
<S>                                       <C>                <C>           <C>
Bond Portfolio                             -1.50%              5.67%         5/1/97
Government Bond Portfolio                  -1.31%              6.12%         8/1/94
Balanced Portfolio                          8.20%             14.79%         8/1/94
Mid Cap Growth Portfolio                   25.42%             23.56%         8/1/94
Large Cap Growth Portfolio                 29.26%             26.07%         8/1/94
Equity Index Portfolio                     21.11%             19.09%         5/1/98
Diversified Equity Portfolio                9.13%             17.88%        3/30/95
Diversified Mid Cap Portfolio              10.50%             15.98%        3/30/95
Mid Cap Value Portfolio                    -1.84%              3.99%         5/1/97
</TABLE>

         The 30 day yield as of 12/31/99 for the Portfolios listed below was as
follows:

                             30 Day Yield @ 12/31/99


Bond Portfolio                          6.33%
Government Bond Portfolio               6.17%
Balanced Portfolio                      2.66%

ADMINISTRATIVE SERVICES PLAN

         On November 17, 1999, a majority of the disinterested Trustees of the
Trust approved an Administrative Services Plan (the "Plan") and authorized any
officer of the Trust to execute and deliver, in the name and on behalf of the
Portfolios, written agreements in substantially the form presented to the Board
of Trustees of the Trust ("Servicing Agreements") with insurance companies and
other entities which are shareholders of record or which have a servicing
relationship ("Service Organization") with the beneficial owners of a class of a
Portfolio's shares of beneficial interest ("Shares"). Such Servicing Agreements
must provide that the Service Organizations are required to provide
administrative support services to their customers who own Shares of record or
beneficially. In consideration for providing such services, a Service
Organization will receive a fee, computed

                                       57
<PAGE>   117


daily and paid monthly, of up to the annual rate of 0.25% of the average daily
net assets of the Portfolio owned beneficially by its customers. Any bank, trust
company, thrift institution, broker-dealer, insurance company or other financial
institution is eligible to become a Service Organization and to receive fees
under the Plan. All expenses incurred by a Portfolio with respect to its Shares
in connection with the Servicing Agreements and the implementation of the Plan
shall be borne entirely by the holders of Shares of that Portfolio.

         The Plan further provides that the Trustees shall review, at least
quarterly, a written report of the amounts expended pursuant to the Plan and the
purposes for which such expenditures were made. Unless sooner terminated, the
Plan shall continue until November 31, 2000, and thereafter, shall continue
automatically for successive annual periods provided such continuance is
approved at least annually by a majority of the Board of Trustees, including a
majority of the Disinterested Trustees.

MISCELLANEOUS

         The Trust is not required to hold a meeting of Shareholders for the
purpose of annually electing Trustees except that:

         (i) the Trust is required to hold a Shareholders' meeting for the
election of Trustees at such time as less than a majority of the Trustees
holding office have been elected by Shareholders, and

         (ii) if, as a result of a vacancy on the Board of Trustees, less than
two-thirds of the Trustees holding office have been elected by the Shareholders,
that vacancy may only be filled by a vote of the Shareholders. In addition,
Trustees may be removed from office by a written consent signed by the holders
of Shares representing two-thirds of the outstanding Shares of the Trust at a
meeting duly called for that purpose. This meeting shall be held upon the
written request of the holders of Shares representing not less than 20% of the
outstanding Shares of the Trust. Except as set forth above, the Trustees may
continue to hold office and may appoint successor Trustees.

         As used in the Portfolios' Prospectus and in this Statement of
Additional Information, "assets belonging to a Portfolio" means the
consideration received by the Trust upon the issuance or sale of Shares in that
Portfolio, together with all income, earnings, profits, and proceeds derived
from the investment thereof, including any proceeds from the sale, exchange, or
liquidation of such investments, and any funds or payments derived from any
reinvestment of such proceeds, and any general assets of the Trust not readily
identified as belonging to a particular Portfolio that are allocated to that
Portfolio by the Board of Trustees. The Board of Trustees may allocate such
general assets in any manner it deems fair and equitable. It is anticipated that
the factor that will be used by the Board of Trustees in making allocations of
general assets to particular Portfolios will be the relative net assets of the
respective Portfolios at the time of allocation. Each Portfolio's direct
liabilities and expenses will be charged to the assets belonging to that
Portfolio. Each Portfolio will also be charged in proportion to its relative net
assets for the general liabilities and expenses of the Trust. The timing of
allocations of general assets and general liabilities and expenses of the Trust
to particular Portfolios will be determined by the Board of Trustees of the
Trust and will be in accordance with generally accepted accounting principles.
Determinations by the Board of Trustees of the Trust as to the timing of the
allocation of general liabilities and expenses and as to the timing and
allocable portion of any general assets with respect to a particular Portfolio
are conclusive.

         As used in the Portfolios' Prospectuses and in this Statement of
Additional Information, a "vote of a majority of the outstanding Shares" of the
Trust, a particular Portfolio, or a particular class of Shares of a Portfolio,
means the affirmative vote of the lesser of (a) more than 50% of the outstanding
Shares of the Trust, such Portfolio, or such class of Shares of such Portfolio,
or (b) 67% or more of the Shares of the Trust, such Portfolio, or such class of
Shares of such Portfolio present at a meeting at which the holders of more than
50% of the outstanding Shares of the Trust, such Portfolio, or such class of
Shares of such Portfolio are represented in person or by proxy.

         The Trust is registered with the Securities and Exchange Commission as
a management investment company. Such registration does not involve supervision
by the Commission of the management or policies of the Trust.

         The Prospectus and this Statement of Additional Information omit
certain information contained in the Registration Statement filed with the
Securities and Exchange Commission. Copies of such information may be obtained
from the Commission upon payment of the prescribed fee.


                                       58
<PAGE>   118


         The Prospectus and this Statement of Additional Information are not an
offering of the securities herein described in any state in which such offering
may not lawfully be made. No salesman, dealer, or other person is authorized to
give any information or make any representation other than those contained in
the Prospectus and Statement of Additional Information.

                              FINANCIAL STATEMENTS


         The financial statements of the Trust are incorporated by reference
into this Statement of Additional Information. The financial statements for the
fiscal year ended December 31, 1999 have been audited by PricewaterhouseCoopers
LLP, independent public accountants to the Trust, as indicated in their reports
with respect thereto, and are incorporated hereby reference in reliance upon the
authority of said firm as experts in accounting and auditing in giving said
reports.



                                       60

<PAGE>   119



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<PAGE>   120








                       APPENDIX A--DESCRIPTION OF RATINGS

The following is a summary of published ratings by major credit rating agencies.
Credit ratings evaluate only the safety of principal and interest payments, not
the market value risk of lower quality securities. Credit rating agencies may
fail to change credit ratings to reflect subsequent events on a timely basis.
Although Banc One Investment Advisors considers security ratings when making
investment decisions, it also performs its own investment analysis and does not
rely solely on the ratings assigned by credit agencies.

Unrated securities will be treated as non-investment grade securities unless
Banc One Investment Advisors determines that such securities are the equivalent
of investment grade securities. Securities that have received different ratings
from more than one agency are considered investment grade if at least one agency
has rated the security investment grade.

                     DESCRIPTION OF COMMERCIAL PAPER RATINGS

DUFF & PHELPS CREDIT RATING CO. ("DUFF")

D-1+      Highest certainty of timely payment. Short-term liquidity, including
          internal operating factors and/or access to alternative sources of
          funding, is outstanding and safety is just below risk-free U.S.
          Treasury obligations.

D-1       Very high certainty of timely payment. Liquidity factors are excellent
          and supported by good fundamental protection factors. Risk factors are
          minor.

D-1-      High certainty of timely payment. Liquidity factors are strong and
          supported by good fundamental protection factors. Risk factors
          are very small.

D-2       Good certainty of timely payment. Liquidity facts and company
          fundamentals are sound. Although ongoing funding needs may enlarge
          total financing requirements, access to capital markets is good. Risk
          factors are small.

D-3       Satisfactory liquidity and other protection factors qualify issues as
          to investment grade. Risk factors are larger and subject to more
          variation. Nevertheless, timely payment is expected.

D-4       Speculative investment characteristics. Liquidity is not sufficient to
          insure against disruption in debt service. Operating factors and
          market access may be subject to a high degree of variation.

D-5       Issuer failed to meet scheduled principal and/or interest payments.

STANDARD & POOR'S CORPORATION ("S&P")

A-1       Highest category of commercial paper. Capacity to meet financial
          commitment is strong. Obligations designated with a plus sign (+)
          indicate that capacity to meet financial commitment is extremely
          strong.

A-2       Issues somewhat more susceptible to adverse effects of changes in
          circumstances and economic conditions than obligations in higher
          rating categories. However, the capacity to meet financial commitments
          is satisfactory.

A-3       Exhibits adequate protection parameters. However, adverse economic
          conditions or changing circumstances are more likely to lead to a
          weakened capacity of the obligor to meet its financial commitment on
          the obligation.



                                      A-1
<PAGE>   121

B         Regarded as having significant speculative characteristics.
          The obligor currently has the capacity to meet its financial
          commitment on the obligation; however, it faces major ongoing
          uncertainties which could lead to the obligor's inadequate capacity to
          meet its financial commitment on the obligation.

C         Currently vulnerable to nonpayment and is dependent upon
          favorable business, financial, and economic conditions
          for the obligor to meet its financial commitment on the
          obligation.

D         In payment default. The D rating category is used when
          payments on an obligation are not made on the date due
          even if the applicable grace period has not expired,
          unless Standard & Poor's 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 or
          the taking of a similar action if payments on an
          obligation are jeopardized.

FITCH'S IBCA ("FITCH")

F1        Highest capacity for timely repayment. Those issues rated F1+ possess
          a particularly strong credit feature.

F2        Satisfactory capacity for timely repayment although such capacity may
          be susceptible to adverse changes in business, economic or financial
          conditions.

F3        Adequate capacity for timely repayment, but more susceptible to
          adverse changes in business, economic or financial conditions than for
          obligations in higher categories.

B         Capacity for timely repayment is susceptible to adverse changes in
          business, economic or financial conditions.

C         High risk of default or which are currently in default.

MOODY'S INVESTORS SERVICE ("MOODY'S")

Prime-1      Superior ability for repayment.

Prime-2      Strong ability for repayment.

Prime-3      Acceptable ability for repayment. The effect of industry
             characteristics and market compositions may be more pronounced.
             Variability in earnings and profitability may result in changes
             in the level of debt protection measurements and may require
             relatively high financial leverage. Adequate alternate liquidity
             is maintained.

Not Prime    Does not fall within any of the Prime rating categories.




                                      A-2
<PAGE>   122


                          DESCRIPTION OF BANK RATINGS

MOODY'S
These ratings represent Moody's opinion of a bank's intrinsic safety and
soundness.

A           These banks possess exceptional intrinsic financial
            strength. Typically they will be major financial
            institutions with highly valuable and defensible
            business franchises, strong financial fundamentals, and
            a very attractive and stable operating environment.

B           These banks possess strong intrinsic financial strength.
            Typically, they will be important institutions with
            valuable and defensible business franchises, good
            financial fundamentals, and an attractive and stable
            operating environment.

C           These banks possess good intrinsic financial strength.
            Typically, they will be institutions with valuable and
            defensible business franchises. These banks will
            demonstrate either acceptable financial fundamentals
            within a stable operating environment, or better than
            average financial fundamentals within an unstable
            operating environment.

D           These banks possess adequate financial strength, but may
            be limited by one or more of the following factors: a
            vulnerable or developing business franchise; weak
            financial fundamentals; or an unstable operating
            environment.

E           These banks possess very weak intrinsic financial
            strength, require periodic outside support or suggest an
            eventual need for outside assistance. Such institutions
            may be limited by one or more of the following factors:
            a business franchise of questionable value; financial
            fundamentals that are seriously deficient in one or more
            respects; or a highly unstable operating environment.

                      DESCRIPTION OF TAXABLE BOND RATINGS

S&P

S&P's credit rating is a current opinion of an obligor's overall financial
capacity (its creditworthiness) to pay its financial obligation.

AAA         The highest rating assigned by S&P. The obligor's
            capacity to meet its financial commitment on the
            obligation is extremely strong.

AA          The obligor's capacity to meet its financial commitments on the
            obligation is very strong.

A           The obligation is somewhat more susceptible to the
            adverse effects of changes in circumstances and economic
            conditions than obligations in higher rated categories.
            However, the obligor's capacity to meet its financial
            commitment on the obligation is still strong.

BBB         Exhibits adequate protection parameters. However,
            adverse economic conditions or changing circumstances
            are more likely to lead to a weakened capacity of the
            obligor to meet its financial commitment on the
            obligation.




                                      A-3
<PAGE>   123



Obligations rated BB, B, CCC, CC, and C are regarded as having significant
speculative characteristics. BB indicates the least degree of speculation and C
the highest. While such obligations will likely have some quality and protective
characteristics, these may be outweighed by large uncertainties or major
exposures to adverse conditions.

BB          Less vulnerable to nonpayment than other speculative issues.
            However, such issues face major ongoing uncertainties or exposure to
            adverse business, financial, or economic conditions which could lead
            to the obligor's inadequate capacity to meet its financial
            commitment on the obligation.

B           More vulnerable to nonpayment than obligations rated BB, but the
            obligor currently has the capacity to meet its financial commitment
            on the obligation. Adverse business, financial, or economic
            conditions will likely impair the obligor's capacity or willingness
            to meet its financial commitment on the obligation.

CCC         Currently vulnerable to nonpayment, and dependent upon favorable
            business, financial, and economic conditions for the obligor to meet
            its financial commitment on the obligation. In the event of adverse
            business, financial, or economic conditions, the obligor is not
            likely to have the capacity to meet its financial commitment on the
            obligation.

CC          Currently highly vulnerable to nonpayment.

C           Used to cover a situation where a bankruptcy petition has been filed
            or similar action has been taken, but payments on this obligation
            are being continued.

D           In payment default. Used when payments on an obligation are not made
            on the date due even if the applicable grace period has not expired,
            unless Standard & Poor's believes that such payments will be made
            during such grace period. Also used upon the filing of a bankruptcy
            petition or the taking of a similar action if payments on an
            obligation are jeopardized.

MOODY'S
INVESTMENT GRADE

Aaa         Best quality. They carry the smallest degree of investment risk and
            are generally referred to as "gilt edged." Interest payments are
            protected by a large, or an exceptionally stable, margin and
            principal is secure.

Aa          High quality by all standards. Margins of protection may not be as
            large as in Aaa securities, fluctuation of protective elements may
            be greater, or there may be other elements present that make the
            long-term risks appear somewhat larger than in Aaa securities.

A           These bonds 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         These bonds are considered 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.


                                      A-4
<PAGE>   124



NON-INVESTMENT GRADE

Ba          These bonds have speculative elements; their future cannot be
            considered as well assured. The protection of interest and principal
            payments may be very moderate and thereby not well safeguarded
            during good and bad times over the future.

B           These bonds lack the characteristics of a desirable investment
            (i.e., potentially low assurance of timely interest and principal
            payments or maintenance of other contract terms over any long period
            of time may be small).

Caa         Bonds in this category have poor standing and may be in default.
            These bonds carry an element of danger with respect to principal and
            interest payments.

Ca          Speculative to a high degree and could be in default or have other
            marked shortcomings. C is the lowest rating.

C           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.


FITCH
INVESTMENT GRADE

AAA         Highest rating category. The obligor's capacity for timely repayment
            of principal and interest is extremely strong.

AA          The obligor's capacity for timely repayment is very strong.

A           Bonds and preferred stock considered to be investment grade and of
            high credit quality. The obligor's ability for timely repayment is
            strong. However, adverse changes in business, economic, or financial
            conditions are more likely to affect the capacity for timely
            repayment than obligations in higher rated categories.

BBB         The obligor's capacity for timely repayment of principal and
            interest is adequate. However, adverse changes in business, economic
            or financial conditions and circumstances are more likely to affect
            the capacity for timely repayment than for obligations in higher
            rated categories.
NON-INVESTMENT GRADE

BB          Obligations for which capacity for timely repayment of principal and
            interest is uncertain. These obligations are speculative to some
            degree and capacity for repayment remains susceptible over time to
            adverse changes in business, financial or economic conditions.
B           The obligor's capacity for timely repayment of principal and
            interest is uncertain. Timely repayment of principal and interest is
            not sufficiently protected against adverse changes in business,
            economic or financial conditions and these obligations are far more
            speculative than those in higher rated categories.

CCC         Obligations for which there is a current perceived possibility of
            default. Timely repayment of principal and interest is dependent on
            favorable business, economic, or financial conditions and these
            obligations are far more speculative than those in higher rated
            categories.

CC          Obligations which are highly speculative or which have a high risk
            of default.

C           Obligations which are currently in default.




                                      A-5
<PAGE>   125



                        DESCRIPTION OF INSURANCE RATINGS

MOODY'S

These ratings represent Moody's opinions of the ability of insurance companies
to pay punctually senior policyholder claims and obligations.

Aaa         Insurance companies rated in this category offer exceptional
            financial security. While the financial strength of these companies
            is likely to change, such changes as can be visualized are most
            unlikely to impair their fundamentally strong position.

Aa          These insurance companies offer excellent financial security.
            Together with the Aaa group, they constitute what are generally
            known as high grade companies. They are rated lower than Aaa
            companies because long-term risks appear somewhat larger.

A           Insurance companies rated in this category offer good financial
            security. However, elements may be present which suggest a
            susceptibility to impairment sometime in the future.

Baa         Insurance companies rated in this category offer adequate financial
            security. However, certain protective elements may be lacking or may
            be characteristically unreliable over any great length of time.

Ba          Insurance companies rated in this category offer questionable
            financial security. Often the ability of these companies to meet
            policyholder obligations may be very moderate and thereby not well
            safeguarded in the future.

B           Insurance companies rated in this category offer poor financial
            security. Assurance of punctual payment of policyholder obligations
            over any long period of time is small.

Caa         Insurance companies rated in this category offer very poor financial
            security. They may be in default on their policyholder obligations
            or there may be present elements of danger with respect to punctual
            payment of policyholder obligations and claims.

Ca          Insurance companies rated in this category offer extremely poor
            financial security. Such companies are often in default on their
            policyholder obligations or have other marked shortcomings.

C           Insurance companies rated in this category are the lowest rated
            class of insurance company and can be regarded as having extremely
            poor prospects of ever offering financial security.

S & P

An insurer rated "BBB" or higher is regarded as having financial security
characteristics that outweigh any vulnerabilities, and is highly likely to have
the ability to meet financial commitments.

AAA         EXTREMELY STRONG financial security characteristics. "AAA" is the
            highest Insurer Financial Strength Rating assigned by Standard &
            Poor's.

AA          VERY STRONG financial security characteristics, differing only
            slightly from those rated higher.

A           STRONG financial security characteristics, but is somewhat more
            likely to be affected by adverse business conditions than are
            insurers with higher ratings.




                                      A-6
<PAGE>   126


BBB         GOOD financial security characteristics, but is more likely to be
            affected by adverse business conditions than are higher rated
            insurers.

An insurer rated "BB" or lower is regarded as having vulnerable characteristics
that may outweigh its strength. "BB" indicates the least degree of vulnerability
within the range; "CC" the highest.

BB          MARGINAL financial security characteristics. Positive attributes
            exist, but adverse business conditions could lead to insufficient
            ability to meet financial commitments.

B           WEAK financial security characteristics. Adverse business conditions
            will likely impair its ability to meet financial commitments.

CCC         VERY WEAK financial security characteristics, and is dependent on
            favorable business conditions to meet financial commitments.

CC          EXTREMELY WEAK financial security characteristics and is likely not
            to meet some of its financial commitments.

R           An insurer rated "R" has experienced a REGULATORY ACTION regarding
            solvency. The rating does not apply to insurers subject only to
            nonfinancial actions such as market conduct violations.

NR          NOT RATED, which implies no opinion about the insurer's financial
            security.

Plus (+)
or
minus (-)   Following ratings from "AA" to "CCC" show relative standing within
            the major rating categories.





                                      A-7
<PAGE>   127

                      DESCRIPTION OF MUNICIPAL NOTE RATINGS

MOODY'S
MIG1 & VMIG1            Short-term municipal securities rated MIG1 or VMIG1 are
                        of the best quality. They have strong protection from
                        established cash flows, superior liquidity support or
                        demonstrated broad-based access to the market for
                        refinancing.

MIG2 & VMIG2            These short-term municipal securities rated are
                        of high quality. Margins of protection are ample
                        although not so large as in the preceding group.

MIG3 & VMIG3            Favorable quality. All security elements are
                        accounted for, but the undeniable strength of the
                        preceding grades is lacking. Liquidity and cash flow
                        protection may be narrow and marketing access for
                        refinancing is likely to be less well established.

MIG4 & VMIG4            This denotes adequate quality protection commonly
                        regarded as required of an investment security is
                        present and although not distinctly or predominantly
                        speculative, there is a specific risk.

SG                      This denotes speculative quality.

S&P

An S&P note rating reflects the liquidity concerns and market access risks
unique to notes. Notes due in three years or less will likely receive a note
rating. Notes maturing beyond three years will most likely receive a long-term
debt rating.

SP-1                    Strong capacity to pay principal and interest. Those
                        issues determined to possess overwhelming safety
                        characteristics will be given a plus (+) designation.

SP-2                    Satisfactory capacity to pay principal and interest.

SP-3                    Speculative capacity to pay principal and interest.

                     DESCRIPTION OF PREFERRED STOCK RATINGS

MOODY'S

aaa                     Top-quality preferred stock. This rating indicates good
                        asset protection and the least risk of dividend
                        impairment within the universe of preferred stocks.

aa                      High-grade preferred stock. This rating indicates that
                        there is a reasonable assurance the earnings and asset
                        protection will remain relatively well maintained in the
                        foreseeable future.

a                       Upper-medium grade preferred stock. While risks are
                        judged to be somewhat greater than in the "aaa" and "aa"
                        classifications, earnings and asset protection are,
                        nevertheless, expected to be maintained at adequate
                        levels.

baa                     Medium-grade preferred stock, neither highly protected
                        nor poorly secured. Earnings and asset protection appear
                        adequate at present but may be questionable over any
                        great length of time.

ba                      Considered to have speculative elements and its future
                        cannot be considered well assured. Earnings and asset
                        protection may be very moderate and not well safeguarded
                        during adverse periods. Uncertainty of position
                        characterizes preferred stocks in this class.




                                      A-8
<PAGE>   128


b                       Lacks the characteristics of a desirable investment.
                        Assurance of dividend payments and maintenance of other
                        terms of the issue over any long period of time may be
                        small.

caa                     Likely to be in arrears on dividend payments. This
                        rating designation does not purport to indicate the
                        future status of payments.

ca                      Speculative in a high degree and is likely to be in
                        arrears on dividends with little likelihood of eventual
                        payments.

c                       Lowest rated class of preferred or preference stock.
                        Issues so rated can thus be regarded as having extremely
                        poor prospects of ever attaining any real investment
                        standing.

Note: Moody's applies numerical modifiers 1, 2, and 3 in each rating
classification; the modifier 1 indicates that the security 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 issue ranks in the lower end of its
generic rating category.

S&P

S&P's preferred stock rating is an assessment of the capacity and willingness of
an issuer to pay preferred stock dividends and any applicable sinking fund
obligations.

AAA                     Highest rating. This rating indicates an extremely
                        strong capacity to pay the preferred stock obligations.

AA                      High-quality, fixed-income security. The capacity to pay
                        preferred stock obligations is very strong, although not
                        as overwhelming as for issues rated "AAA."

A                       Backed by a sound capacity to pay the preferred stock
                        obligations, although it is somewhat more susceptible to
                        the adverse effects of changes in circumstances and
                        economic conditions.

BBB                     Backed by an adequate capacity to pay the preferred
                        stock obligations. Whereas the issuer normally exhibits
                        adequate protection parameters, adverse economic
                        conditions or changing circumstances are more likely to
                        lead to a weakened capacity to make payments for a
                        preferred stock in this category than for issues in the
                        "A" category.

BB, B, CCC              Regarded, on balance, as predominantly speculative with
                        respect to the issuer's capacity to pay preferred stock
                        obligations. BB indicates the lowest degree of
                        speculation and CCC the highest. While such issues will
                        likely have some quality and protective characteristics,
                        these are outweighed by large uncertainties or major
                        risk exposures to adverse conditions.
CC                      In arrears on dividends or sinking fund payments,
                        but is currently paying.
C                       Nonpaying issue.

D                       Nonpaying issue with the issuer in default on debt
                        instruments.

N.R.                    No rating has been requested, insufficient information
                        on which to base a rating, or Standard & Poor's does not
                        rate a particular type of obligation as a matter of
                        policy.

Plus (+) or
minus (-)               To provide more detailed indications of preferred stock
                        quality, ratings from AA to CCC may be modified by the
                        addition of a plus or minus sign to show relative
                        standing within the major rating categories.




                                      A-9
<PAGE>   129


                      DESCRIPTION OF MUNICIPAL BOND RATINGS
            (INCLUDING FOREIGN, MORTGAGE AND ASSET-BACKED SECURITIES)

S&P

INVESTMENT GRADE

AAA                     The highest rating. The rating indicates an extremely
                        strong capacity to meet its financial commitment.

AA                      Differs from AAA issues only in a small degree. The
                        obligor's capacity to meet its financial commitment is
                        very strong.

A                       These bonds are somewhat more susceptible to the adverse
                        effects of changes in circumstances and economic
                        conditions than debt in higher rated categories.
                        However, capacity to meet its financial commitment on
                        the obligation is still strong.

BBB                     Exhibits adequate protection parameters. However,
                        adverse economic conditions or changing circumstances
                        are more likely to lead to a weakened capacity to meet
                        its financial commitment on the obligations.

SPECULATIVE GRADE

BB                      Less vulnerable to non-payment than other speculative
                        issues. However, these bonds face major ongoing
                        uncertainties or exposure to adverse business, financial
                        or economic conditions which could lead to inadequate
                        capacity to meet financial commitment on the
                        obligations.

B                       More vulnerable to non-payment than obligations rated
                        BB, but currently has the capacity to meet its financial
                        commitment on the obligation. Adverse business,
                        financial or economic conditions will likely impair
                        capacity or willingness to meet its financial commitment
                        on the obligation.

CCC                     Currently vulnerable to non-payment, and is dependent
                        upon favorable business, financial, and economic
                        conditions to meet its financial commitment on the
                        obligation. In the event of adverse business, financial,
                        or economic conditions, not likely to have the capacity
                        to meet its financial commitment on the obligation.

CC                      Currently highly vulnerable to non-payment.

C                       This rating may be used to cover a situation where a
                        bankruptcy petition has been filed, or similar action
                        has been taken, but payments on this obligation are
                        being continued.

D                       Bonds in payment default.

Ratings from AA to CCC may be modified by a plus (+) or minus (-) to show
relative standing within the major rating categories.





                                      A-10
<PAGE>   130



MOODY'S
INVESTMENT GRADE

Aaa                     Best quality. They carry the smallest degree of
                        investment risk and are generally referred to as "gilt
                        edged." Interest payments are protected by a large, or
                        an exceptionally stable, margin and principal is secure.

Aa                      High quality by all standards. Margins of protection may
                        not be as large as in Aaa securities, fluctuation of
                        protective elements may be greater, or there may be
                        other elements present that make the long-term risks
                        appear somewhat larger than in Aaa securities.

A                       These bonds 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                     These bonds are considered 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.

NON-INVESTMENT GRADE

Ba                      These bonds have speculative elements; their future
                        cannot be considered as well assured. The protection of
                        interest and principal payments may be very moderate and
                        thereby not well safeguarded during good and bad times
                        over the future.

B                       These bonds lack the characteristics of a desirable
                        investment (i.e., potentially low assurance of timely
                        interest and principal payments or maintenance of other
                        contract terms over any long period of time may be
                        small).

Caa                     Bonds in this category have poor standing and may be in
                        default. These bonds carry an element of danger with
                        respect to principal and interest payments.

Ca                      Speculative to a high degree and could be in default or
                        have other marked shortcomings. Ca is the lowest rating.

                     DESCRIPTION OF SHORT-TERM DEBT RATINGS

Thompson Bank Watch, Inc. ("TBW") assigns ratings to specific debt instruments
with original maturities of one year or less. The TBW Short-Term ratings
specifically assess the likelihood of an untimely payment of principal and
interest.

TBW-1                   Very high degree of likelihood that principal and
                        interest will be paid on a timely basis.

TBW-2                   While degree of safety regarding timely repayment of
                        principal and interest is strong, the relative degree is
                        not as high as for issues rated TBW-1.

TBW-3                   Lowest investment grade category. While more susceptible
                        to adverse developments than obligations with higher
                        ratings, capacity to service principal and interest in a
                        timely fashion is considered adequate.

TBW-4                   Non-investment grade and, therefore, speculative.




                                      A-11
<PAGE>   131

44


                                     APPENDIX B - INVESTMENT PRACTICES
                        --------------------------------------------------------


                        The Portfolios invest in a variety of securities and
                        employ a number of investment techniques. What follows
                        is a list of some of the securities and techniques which
                        may be utilized by the Portfolios. For more information
                        concerning the Portfolio's investment practices see the
                        Statement of Additional Information.

- ------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                          PORTFOLIO NAME                       PORTFOLIO CODE
                                      -----------------------------------------------------------------------
    <S>                               <C>                                                      <C>
                                      One Group Investment Trust Bond Portfolio                       1
                                      -----------------------------------------------------------------------
                                      One Group Investment Trust Government Bond Portfolio            2
                                      -----------------------------------------------------------------------
                                      One Group Investment Trust Balanced Portfolio                   3
                                      -----------------------------------------------------------------------
                                      One Group Investment Trust Mid Cap Growth Portfolio             4
                                      -----------------------------------------------------------------------
                                      One Group Investment Trust Large Cap Growth Portfolio           5
                                      -----------------------------------------------------------------------
                                      One Group Investment Trust Diversified Equity Portfolio         6
                                      -----------------------------------------------------------------------
                                      One Group Investment Trust Equity Index Portfolio               7
                                      -----------------------------------------------------------------------
                                      One Group Investment Trust Diversified Mid Cap Portfolio        8
                                      -----------------------------------------------------------------------
                                      One Group Investment Trust Mid Cap Value Portfolio              9
                                      -----------------------------------------------------------------------
</TABLE>

<TABLE>
<CAPTION>
                                                                                                 PORTFOLIO
                                      INSTRUMENT                                                   CODE
- ---------------------------------------------------------------------------------------------------------------------
<S>                                   <C>                                                        <C>
                                      U.S. Treasury Obligations: Bills, notes, bonds,            1-9
                                      STRIPS,
                                      and CUBES.
                                      -------------------------------------------------------------------------------
                                      Treasury Receipts: TRS, TIGRs, and CATS.                   1-9
                                      -------------------------------------------------------------------------------
                                      U.S. Government Agency Securities: Securities              1-9
                                      issued by agencies and instrumentalities of the
                                      U.S. Government. These include Ginnie Mae, Fannie
                                      Mae, and Freddie Mac.
                                      -------------------------------------------------------------------------------
                                      Certificates of Deposit: Negotiable instruments            1, 3-9
                                      with a stated maturity.
                                      -------------------------------------------------------------------------------
                                      Time Deposits: Non-negotiable receipts issued by a         1, 3-9
                                      bank in exchange for the deposit of funds.

                                      -------------------------------------------------------------------------------
</TABLE>



                                                                             B-1
<PAGE>   132

                                                                              45

<TABLE>
<CAPTION>
                                                                                                  PORTFOLIO
                                      INSTRUMENT                                                     CODE
- ---------------------------------------------------------------------------------------------------------------------
<S>                                   <C>                                                         <C>
                                      Common Stock: Shares of ownership of a company.             3-9
                                      -------------------------------------------------------------------------------
                                      Repurchase Agreements: The purchase of a security           1-9
                                      and the simultaneous commitment to return the
                                      security to the seller at an agreed upon price on
                                      an agreed upon date. This is treated as a loan.
                                      -------------------------------------------------------------------------------
                                      Reverse Repurchase Agreement: The sale of a                 1-9
                                      security and the simultaneous commitment to buy
                                      the security back at an agreed upon price on an
                                      agreed upon date. This is treated as a borrowing
                                      by a Portfolio.
                                      -------------------------------------------------------------------------------
                                      Securities Lending: The lending of up to 33 1/3%            1-9
                                      of the Portfolio's total assets. In return the
                                      Portfolio will receive cash, other securities,
                                      and/or letters of credit as collateral.
                                      -------------------------------------------------------------------------------
                                      When-Issued Securities and Forward Commitments:             1-9
\                                     Purchase or contract to purchase securities at a
                                      fixed price for delivery at a future date.

                                      -------------------------------------------------------------------------------
                                      Investment Company Securities: Shares of other              1-9
                                      mutual funds, including money market funds of One
                                      Group Mutual Funds and shares of other money
                                      market funds for which Banc One Investment
                                      Advisors or its affiliates serve as investment
                                      advisor or administrator. Banc One Investment
                                      Advisors will waive certain fees when investing in
                                      funds for which it serves as investment advisor.
                                      -------------------------------------------------------------------------------
                                      Convertible Securities: Bonds or preferred stock            1, 3-9
                                      that can convert to common stock.
                                      -------------------------------------------------------------------------------
                                      Call and Put Options: A call option gives the               1-9
                                      buyer the right to buy, and obligates the seller
                                      of the option to sell, a security at a specified
                                      price at a future date. A put option gives the
                                      buyer the right to sell, and obligates the seller
                                      of the option to buy, a security at a specified
                                      price at a future date. The Portfolios will sell
                                      only covered call and secured put options.
                                      -------------------------------------------------------------------------------
</TABLE>
                                                                             B-2
<PAGE>   133

46

<TABLE>
<CAPTION>
                                                                                                 PORTFOLIO
                                      INSTRUMENT                                                   CODE
- ---------------------------------------------------------------------------------------------------------------------
<S>                                   <C>                                                        <C>
                                      Futures and Related Options: A contract providing          1-9
                                      for the future sale and purchase of a specified
                                      amount of a specified security, class of
                                      securities, or an index at a specified time in the
                                      future and at a specified price.
                                      -------------------------------------------------------------------------------
                                      Real Estate Investment Trusts ("REITs"): Pooled            3-9
                                      investment vehicles which invest primarily in
                                      income producing real estate or real estate
                                      related loans or interest.


                                      -------------------------------------------------------------------------------
                                      Bankers' Acceptances: Bills of exchange or time            1, 3-9
                                      drafts drawn on and accepted by a commercial bank.
                                      Maturities are generally six months or less.
                                      -------------------------------------------------------------------------------
                                      Commercial Paper: Secured and unsecured short-term         1, 3-9
                                      promissory notes issued by corporations and other
                                      entities. Maturities generally vary from a few
                                      days to nine months.
                                      -------------------------------------------------------------------------------
                                      Foreign Securities: Stocks issued by foreign               1, 3-9
                                      companies, as well as commercial paper of foreign
                                      issuers and obligations of foreign banks, overseas
                                      branches of U.S. banks and supranational entities.
                                      The Equity Portfolios may also invest in American
                                      Depositary Receipts, Global Depositary Receipts,
                                      and American Depositary Securities.
                                      -------------------------------------------------------------------------------
                                      Restricted Securities: Securities not registered           1-9
                                      under the Securities Act of 1933, such as
                                      privately placed commercial paper and Rule 144A
                                      securities.
                                      -------------------------------------------------------------------------------
                                      Variable and Floating Rate Instruments:                    1, 3-9
                                      Obligations with interest rates which are reset
                                      daily, weekly, quarterly or some other period and
                                      which may be payable to the Portfolio on demand.
                                      -------------------------------------------------------------------------------
                                      Warrants: Securities, typically issued with                3-8
                                      preferred stock or bonds, that give the holder the
                                      right to buy a proportionate amount of common
                                      stock at a specified price.
                                      -------------------------------------------------------------------------------
                                      Preferred Stock: A class of stock that generally           1, 3-9
                                      pays a dividend at a specified rate and has
                                      preference over common stock in the payment of
                                      dividends and in liquidation.
                                      -------------------------------------------------------------------------------
</TABLE>

                                                                             B-3
<PAGE>   134

                                                                              47

<TABLE>
<CAPTION>
                                                                                                 PORTFOLIO
                                      INSTRUMENT                                                    CODE
- ---------------------------------------------------------------------------------------------------------------------
<S>                                   <C>                                                        <C>
                                      Mortgage-Backed Securities: Debt obligations               1-3, 8
                                      secured by real estate loans and pools of loans.
                                      These include collateralized mortgage obligations
                                      ("CMOs") and Real Estate Mortgage Investment
                                      Conduits ("REMICs").
                                      -------------------------------------------------------------------------------
                                      Corporate Debt Securities: Corporate bonds and             1, 3, 5
                                      non-convertible debt securities.
                                      -------------------------------------------------------------------------------
                                      Demand Features: Securities that are subject to            1, 3, 5
                                      puts and standby commitments to purchase the
                                      securities at a fixed price (usually with accrued
                                      interest) within a fixed period of time following
                                      demand by a Portfolio.
                                      -------------------------------------------------------------------------------
                                      Asset-Backed Securities: Securities secured by             1, 3, 8
                                      company receivables, home equity loans, truck and
                                      auto loans, leases, credit card receivables and
                                      other securities backed by other types of
                                      receivables or other assets.
                                      -------------------------------------------------------------------------------
                                      Mortgage Dollar Rolls: A transaction in which a            1-3, 8
                                      Portfolio sells securities for delivery in a
                                      the same party to repurchase similar but not
                                      identical securities on a specified future date.
                                      -------------------------------------------------------------------------------
                                      Adjustable Rate Mortgage Loans ("ARMs"): Loans in          1-3
                                      a mortgage pool which provide for a fixed initial
                                      mortgage interest rate for a specified period of
                                      time, after which the rate may be subject to
                                      periodic adjustments.
                                      -------------------------------------------------------------------------------
                                      Swaps, Caps and Floors: A Portfolio may enter into         1-9
                                      these transactions to manage its exposure to
                                      involve an exchange of obligations by two parties.
                                      Caps and floors entitle a purchaser to a principal
                                      amount from the seller of the cap or floor to the
                                      extent that a specified index exceeds or falls
                                      below a predetermined interest rate or amount.
                                      -------------------------------------------------------------------------------
                                      New Financial Products: New options and futures            1-9
                                      contracts and other financial products continue to
                                      be developed and the Portfolios may invest in such
                                      options, contracts and products.
                                      -------------------------------------------------------------------------------
</TABLE>

                                                                             B-4
<PAGE>   135

48

<TABLE>
<CAPTION>
                                                                                                 PORTFOLIO
                                             INSTRUMENT                                            CODE
- ---------------------------------------------------------------------------------------------------------------------
<S>                                   <C>                                                        <C>
                                      Structured Instruments: Debt securities issued by          1-9
                                      agencies and instrumentalities of the U.S.
                                      government, banks, municipalities, corporations
                                      and other businesses whose interest and/or
                                      principal payments are indexed to foreign currency
                                      exchange rates, interest rates, or one or more
                                      other referenced indices.
                                      -------------------------------------------------------------------------------
                                      Municipal Securities: Securities issued by a state         1-3
                                      or political subdivision to obtain funds for
                                      various public purposes. Municipal securities
                                      include private activity bonds and industrial
                                      development bonds, as well as General Obligation
                                      Notes, Tax Anticipation Notes, Bond Anticipation
                                      Notes, Revenue Anticipation Notes, Project Notes,
                                      other short-term tax-exempt obligations, municipal
                                      leases, and obligations of municipal housing
                                      authorities and single family revenue bonds.
                                      -------------------------------------------------------------------------------
                                      Index Shares: Ownership interests in unit                  3-9
                                      investment trusts and other pooled investment
                                      vehicles that hold a portfolio of securities or
                                      stocks designed to track the price performance and
                                      dividend yield of a particular index such as
                                      Standard & Poor's Depository Receipts ("SPDRs")
                                      and Nasdaq 100's. The Equity Index Portfolio
                                      invests only in SPDRs.
                                      -------------------------------------------------------------------------------
                                      Obligations of Supranational Agencies: Obligations         3, 8
                                      of supranational agencies which are chartered to
                                      promote economic development and are supported by
                                      various governments and governmental agencies.
                                      -------------------------------------------------------------------------------
                                      Zero-Coupon Debt Securities: Bonds and other debt          1-3, 8
                                      that pay no interest, but are issued at a discount
                                      from their value at maturity. When held to
                                      maturity, their entire return equals the
                                      difference between their issue price and their
                                      maturity value.
                                      -------------------------------------------------------------------------------
                                      Zero-Fixed-Coupon Debt Securities: Zero coupon             1-3, 8
                                      debt securities which convert on a specified date
                                      to interest bearing debt securities.

                                      -------------------------------------------------------------------------------
                                      Stripped Mortgage-Backed Securities: Derivative            1-3
                                      multi-class mortgage securities which are usually
                                      structured with two classes of shares that receive
                                      different proportions of the interest and
                                      principal from a pool of mortgage assets. These
                                      include IOs and POs.
                                      -------------------------------------------------------------------------------
</TABLE>

                                                                             B-5
<PAGE>   136

                                                                              49

<TABLE>
<CAPTION>
                                                                                             PORTFOLIO
                                      INSTRUMENT                                                CODE
- ---------------------------------------------------------------------------------------------------------
<S>                                   <C>                                                   <C>
                                      Inverse Floating Rate Instruments: Floating rate      1-3
                                      debt instruments with interest rates that reset in
                                      the opposite direction from the market rate of
                                      interest to which the inverse floater is indexed.
                                      -------------------------------------------------------------------
                                      Loan Participations and Assignments:                  1, 3
                                      Participations in, or assignments of all or a
                                      portion of loans to corporations or to
                                      governments, including governments of the less
                                      developed countries ("LDCs").

                                      -------------------------------------------------------------------
                                      Fixed Rate Mortgage Loans: Investments in fixed       1-3
                                      rate mortgage loans or mortgage pools which bear
                                      simple interest at fixed annual rates and have
                                      original terms ranging from 5 to 40 years.
                                      -------------------------------------------------------------------
                                      Short-Term Funding Agreements: Funding agreements     1, 3
                                      issued by banks and highly rated U.S. insurance
                                      companies such as Guaranteed Investment Contracts
                                      ("GICs") and Bank Investment Contracts ("BICs").
</TABLE>


                                                                             B-6



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