ONE GROUP MUTUAL FUNDS
497, 2000-08-18
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<PAGE>   1
ONE GROUP(R)
MORTGAGE-BACKED SECURITIES FUND

                                                    PROSPECTUS
                                                    August 18, 2000

                                                             [LOGO-ONE1GROUP]
























                                               The Securities and Exchange
                                               Commission has not approved
                                               or disapproved the shares of
                                               any of the Portfolios as an
                                               investment or determined whether
                                               the 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 Mortgage-Backed Securities Fund  2
                                                              ---------
</TABLE>

<TABLE>
<C>                                                           <S>
                                         MORE ABOUT THE FUND
                             Principal Investment Strategies  6
                                                              ---------
                                            Investment Risks  7
                                                              ---------
                                         Investment Policies  8
                                                              ---------
                                           Portfolio Quality  8
                                                              ---------
                               Temporary Defensive Positions  9
                                                              ---------
                                          Portfolio Turnover  9
                                                              ---------
</TABLE>

<TABLE>
<C>                                                           <S>
              HOW TO DO BUSINESS WITH ONE GROUP MUTUAL FUNDS
                                      Purchasing Fund Shares  10
                                                              ---------
                                               Sales Charges  12
                                                              ---------
                                      Exchanging Fund Shares  13
                                                              ---------
                                       Redeeming Fund Shares  14
                                                              ---------
</TABLE>

<TABLE>
<C>                                                           <S>
                                     SHAREHOLDER INFORMATION
                                               Voting Rights  16
                                                              ---------
                                           Dividend Policies  16
                                                              ---------
                               Tax Treatment of Shareholders  16
                                                              ---------
                                        Shareholder Inquires  17
                                                              ---------
</TABLE>

<TABLE>
<C>                                                           <S>
                               MANAGEMENT OF ONE GROUP FUNDS
                                                 The Advisor  18
                                                              ---------
                                           The Fund Managers  18
                                                              ---------
</TABLE>

<TABLE>
<C>                                                           <S>
                            APPENDIX A: INVESTMENT PRACTICES  19
                                                              ---------
</TABLE>
<PAGE>   3

                                  FUND SUMMARY
                                  Investments, Risk & Performance
<PAGE>   4

ONE GROUP(R)

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

2

                        FUND SUMMARY: INVESTMENTS, RISKS & PERFORMANCE

                                   Mortgage-Backed
                                   Securities Fund

WHAT IS THE GOAL OF THE
  MORTGAGE-BACKED
  SECURITIES FUND?      The Fund seeks to maximize total return by investing
                        primarily in a diversified portfolio of debt securities
                        backed by pools of residential and/or commercial
                        mortgages.


WHAT ARE THE MORTGAGE-
  BACKED SECURITIES
  FUND'S
  MAIN INVESTMENT
  STRATEGIES?           The Fund invests mainly in investment grade bonds and
                        debt securities. These include mortgage-backed
                        securities issued by the Government National Mortgage
                        Association (GNMA), the Federal National Mortgage
                        Association (FNMA), the Federal Home Loan Mortgage
                        Corporation (FHLMC), commercial mortgage securities and
                        collateralized mortgage obligations. The Fund also may
                        invest in other types of non-mortgage related debt
                        securities, including U.S. government securities,
                        asset-backed securities, municipal securities and
                        corporate debt securities. Banc One Investment Advisors
                        analyzes four major factors in managing and constructing
                        the Fund: duration, market sector, maturity
                        concentrations and individual 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 the
                        complex legal and technical structure of the
                        transaction. For more information about the
                        Mortgage-Backed Securities Fund's investment strategies,
                        please read "More About the Fund" 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
  MORTGAGE-BACKED
  SECURITIES FUND?      The main risks of investing in the Fund and the
                        circumstances likely to adversely affect your investment
                        are described below. The share price of the Fund 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 Fund. For additional information on
                        risk, please read "Investment Risks."
<PAGE>   5

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

                           Mortgage-Backed Securities Fund


                MAIN RISKS
--------------------------
                        Interest Rate Risk. The Fund 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 Fund'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
                        Fund'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.

                        Credit Risk. There is a risk that issuers and
                        counterparties will not make payments on securities and
                        repurchase agreements held by the Fund. Such default
                        could result in losses to the Fund. In addition, the
                        credit quality of securities held by the Fund 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 Fund. Lower
                        credit quality also may affect a security's liquidity
                        and make it difficult for the Fund to sell the security.


                        Prepayment and Call Risk. As part of its main investment
                        strategy, the Fund 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 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 Fund may
                        have to reinvest in securities with a lower yield. The
                        Fund may also fail to recover additional amounts (i.e.,
                        premiums) paid for the securities with higher interest
                        rates, resulting in an unexpected capital loss.


                        Derivative Risk. The Fund 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 Fund
                        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 Fund 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.

                                                                               3
<PAGE>   6

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

                           Mortgage-Backed Securities Fund

4


HOW HAS THE MORTGAGE-
  BACKED SECURITIES FUND
  PERFORMED?            By showing the variability of the Mortgage-Backed
                        Securities Fund's performance from year to year, the
                        chart and table below help show the risk of investing in
                        the Fund. PLEASE REMEMBER THAT THE PAST PERFORMANCE OF
                        THE MORTGAGE-BACKED SECURITIES FUND IS NOT NECESSARILY
                        AN INDICATION OF HOW THE FUND WILL PERFORM IN THE
                        FUTURE.



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

                        BAR CHART (per calendar year) (1,2) -- Class I Shares
--------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                                                 BOND
                                                                                 ----
<S>                                                           <C>
1990                                                                             10.14
1991                                                                             15.12
1992                                                                               6.9
1993                                                                             11.57
1994                                                                             -8.12
1995                                                                             29.03
1996                                                                              8.87
1997                                                                             12.19
1998                                                                              5.99
1999                                                                              2.21
</TABLE>

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


                        (1) For the period January 1, 2000, through June 30,
                            2000, the Fund's total return was 2.88%



                        (2) The Fund commenced operations on August 18, 2000,
                            subsequent to transfer of assets from a common
                            trust fund with materially equivalent investment
                            objectives, policies, guidelines and restrictions
                            as the Fund. The quoted performance of the Fund
                            includes the performance of the common trust fund
                            for the periods prior to the commencement of
                            operations of the Fund as adjusted to reflect the
                            expenses associated with the Fund. The common
                            trust fund was not registered with the SEC and
                            was not subject to the investment restrictions,
                            limitations, and diversification requirements
                            imposed by law on registered mutual funds. If the
                            common trust fund had been registered, its return
                            may have been lower.


The Average Annual Total Return
Table shows how the Fund'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 Fund's
total returns and are not the
same as actual year-by-year
results.

-----------------------------------------------------------------------------
Best Quarter:  9.08%  2Q1995       Worst Quarter:  -2.84%  4Q1994
-----------------------------------------------------------------------------
                        AVERAGE ANNUAL TOTAL RETURNS through December 31,
                        1999(1)
-----------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                1 YEAR    5 YEAR    10 YEAR      LIFE OF FUND
                   CLASS I                                                     (since 12/31/83)
   <S>                                          <C>       <C>       <C>        <C>
   One Group Mortgage-Backed Securities
     Fund                                       2.21%     11.29%     9.02%          10.55%
   --------------------------------------------------------------------------------------------
   Lehman Brothers Mortgage-Backed
     Securities Index(2)                        1.86%      7.98%     7.78%           9.93%
</TABLE>

                        (1) The quoted performance of the Fund includes the
                            performance of the common trust fund for periods
                            prior to the commencement of operations of the
                            Fund as adjusted to reflect the expenses
                            associated with the Fund. The common trust fund
                            was not registered with the SEC and was not
                            subject to the investment restrictions,
                            limitations, and diversification requirements
                            imposed by law on registered mutual funds. If the
                            common trust fund had been registered, its
                            returns may have been lower. The Fund also offers
                            Class A shares. Class A shares had not commenced
                            operations as of the date of this prospectus.

                        (2) The Lehman Brothers Mortgage-Backed Securities
                            Index is an unmanaged market value weighted index
                            of 15 and 30 year fixed-rate securities backed by
                            mortgage pools of the Government National
                            Mortgage Association (GNMA), the Federal National
                            Mortgage Association (FNMA), and the Federal Home
                            Loan Mortgage Corporation (FHLMC), and balloon
                            mortgages with fixed rate coupons. 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 Fund reflects
                            the deduction of these expenses.
<PAGE>   7

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

                              Mortgage-Backed Securities Fund
              FEES AND EXPENSES
This table describes the fees
and expenses that you may pay
if you buy and hold shares of
the Fund.
                       EXAMPLES
The examples are intended to
help you compare the cost of
investing in the Fund with the
cost of investing in other
mutual funds. The examples
assume that you invest $10,000
in the Fund for the time
periods indicated and reflect
what you would pay if either
you redeemed all of your shares
or if you continued to hold
them at the end of the periods
shown. The examples also assume
that your investment has a 5%
return each year and that the
Fund's operating expenses
remain the same. Your actual
costs may be higher or lower
than those shown below.

                                                                               5

<TABLE>
<CAPTION>
   SHAREHOLDER FEES
   ---------------------------------------------------------------------------------------
   (FEES PAID DIRECTLY FROM YOUR INVESTMENT) (1)                 CLASS A   CLASS I
   ---------------------------------------------------------------------------------------
   <S>                                                           <C>       <C>     <C>
   Maximum Sales Charge (Load) Imposed on Purchases                NONE      NONE
     (as a percentage of offering price)
   ---------------------------------------------------------------------------------------
   Maximum Deferred Sales Charge (Load)                            NONE      NONE
     (as a percentage of original purchase price of redemption
     proceeds, as applicable)
   ---------------------------------------------------------------------------------------
   Redemption Fee                                                  NONE      NONE
   ---------------------------------------------------------------------------------------
   Exchange Fee                                                    NONE      NONE
   ---------------------------------------------------------------------------------------
</TABLE>

<TABLE>
<CAPTION>
   ANNUAL FUND OPERATING EXPENSES
   ------------------------------------------------------------------------------
   (EXPENSES THAT ARE DEDUCTED FROM FUND ASSETS)        CLASS A   CLASS I
   ------------------------------------------------------------------------------
   <S>                                                  <C>       <C>     <C>
   Investment Advisory Fees                               .35%      .35%
   ------------------------------------------------------------------------------
   Distribution [and/or Service] (12b-1) Fees             .35%      NONE
   ------------------------------------------------------------------------------
   Other Expenses (1)                                     .25%      .25%
   ------------------------------------------------------------------------------
   Total Annual Fund Operating Expenses                   .95%      .60%
   ------------------------------------------------------------------------------
   Fee Waiver and/or Expense Reimbursement (2)           (.30%)    (.20%)
   ------------------------------------------------------------------------------
   Net Expenses                                           .65%      .40%
   ------------------------------------------------------------------------------
</TABLE>

                        (1) Expense information is based on estimated amounts
                            for the Fund's current fiscal year.

                        (2) Banc One Investment Advisors Corporation and The
                            One Group Services Company have contractually
                            agreed to waive fees and/or reimburse expenses to
                            limit total annual fund operating expenses to
                            .40% for Class I shares and .65% for Class A
                            shares for the period from the commencement of
                            operations and ending on October 31, 2001.

<TABLE>
<CAPTION>
                         CLASS A   CLASS I
   --------------------------------------------
   <S>                   <C>       <C>     <C>
   1 Year (1)             $  66     $  41
   --------------------------------------------
   3 Years                  273       172
   --------------------------------------------
</TABLE>

                        (1) Without contractual fee waivers, 1 Year expenses
                            would be $97 for Class A Shares and $61 for Class
                            I Shares.
<PAGE>   8

ONE GROUP(R)

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

6

                        More About The Fund

                        The Fund described in this Prospectus is a series of One
                        Group Mutual Funds and is managed by Banc One Investment
                        Advisors Corporation. For more information about One
                        Group and Banc One Investment Advisors, please read
                        "Management of One Group Mutual Funds" and the Statement
                        of Additional Information.

--------------------------------------------------------------------------------
    PRINCIPAL
   INVESTMENT
   STRATEGIES           The One Group Mortgage-Backed Securities Fund is
                        designed to maximize total return. Banc One Investment
                        Advisors analyzes four major factors in managing and
                        constructing the Fund: duration, market sector, maturity
                        concentrations and individual securities. The portfolio
                        attempts to enhance total return by selecting market
                        sectors that offer risk/reward advantages based on
                        structural risks and credit trends. Individual
                        securities that are purchased by the Fund 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., mortgage-backed
                        securities). In addition, the principal investment
                        strategy that is used to meet the Fund's investment
                        objective is described in Fund Summary: Investments,
                        Risks & Performance in the front of this prospectus. It
                        is also described below.

                         FUNDAMENTAL POLICIES

              A Fund'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 Fund.

                        There can be no assurance that the Fund will achieve its
                        investment objective. Please note that the Fund may also
                        use strategies that are not described below, but which
                        are described in the Statement of Additional
                        Information.

                        The Fund will invest in mortgage-backed securities and
                        other securities representing an interest in or secured
                        by mortgages.

                        - The Fund invests at least 65% of its total assets in
                          mortgage-backed securities.

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

                        - The Fund will purchase securities issued or guaranteed
                          by the Government National Mortgage Association
                          (GNMA), the Federal National Mortgage Association
                          (FNMA) and the Federal Home Loan Mortgage Corporation
                          (FHLMC). The Fund also may purchase mortgage-backed
                          securities and asset-backed securities that are issued
                          by non-governmental entities. Such securities may or
                          may not have private insurer guarantees of timely
                          payments.

                        - The Fund may purchase taxable or tax-exempt municipal
                          securities.

                        - The Fund may invest in debt securities that are rated
                          in the lowest investment grade category.
<PAGE>   9

                                                                               7

                        - The Fund's average weighted maturity will normally
                          range between two and ten years although the Fund may
                          shorten its weighted average 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 fund calculated
              so as to count most heavily those
              securities with the highest dollar value.
              Average weighted maturity is important to
              investors as an indication of a fund's
              sensitivity to changes in interest rates.
              The longer the average weighted maturity,
              the more fluctuation in share price you
              can expect. Mortgage-related securities
              are subject to prepayment of principal,
              which can shorten the average weighted
              maturity of the Fund's portfolio.
              Therefore, in the case of a Fund holding
              mortgage-backed securities, the average
              weighted maturity of the Fund is
              equivalent to its weighted average life.
              Weighted average life is the average
              weighted maturity of the cash flows in the
              securities held by the Fund given certain
              prepayment assumptions.


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

INVESTMENT RISKS        The risks associated with investing in the Fund are
                        described below and in "Fund Summary: Investments, Risks
                        & Performance" in the front of this prospectus.


-----
                        FIXED INCOME SECURITIES: Investments by the Fund 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 the
                        Fund's investments generally declines. On the other
                        hand, if rates fall, the value of the investments
                        generally increases. The value of the securities in the
                        Fund, and the value of your investment in the Fund, will
                        increase and decrease as the value of the Fund's
                        investments increase and decrease.

                        DERIVATIVES: The Fund invests in securities that are
                        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.


                        LOWER-RATED SECURITIES: The Fund may purchase debt
                        securities rated in the lowest investment grade
                        category. Securities in this 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.


                        For more information about risks associated with the
                        types of investments that the Fund purchases, please
                        read Fund Summary: Investments, Risks & Performance,
                        Appendix A and the Statement of Additional Information.
<PAGE>   10

8

--------------------------------------------------------------------------------
INVESTMENT
   POLICIES             The Fund'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 Fund. The full
                        text of the fundamental policies can be found in the
                        Statement of Additional Information.

-----
                        The Fund will not:


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

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

PORTFOLIO QUALITY       Various rating organizations (like Standard & Poor's
                        Corporation and Moody's Investors 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. 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.


                        The Mortgage-Backed Securities Fund only purchases
                        securities that meet the following criteria:

-----
                        BONDS

                          - The Fund may invest in bonds rated in any of the
                            four investment grade rating categories.

                        PREFERRED STOCK

                          - The Fund may only invest in preferred stock rated in
                            any of the three highest rating categories.
<PAGE>   11

                                                                               9

                        MUNICIPAL SECURITIES

                          - The Fund may only invest in municipal bonds rated in
                            any of the three investment grade rating categories.

                          - The Fund may only invest in other municipal
                            securities, such as tax-exempt commercial paper,
                            notes and variable rate demand obligations that are
                            rated in the highest or second highest investment
                            grade rating categories.

                        COMMERCIAL PAPER

                          - The Fund may invest in commercial paper rated in the
                            highest or second highest rating category.

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

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

TEMPORARY
   DEFENSIVE
   POSITIONS            To provide liquidity and to allow the Fund to respond to
                        unusual market conditions, the Fund may invest all or a
                        portion of its assets in cash and CASH EQUIVALENTS for
                        temporary defensive purposes. Investments in cash and
                        cash equivalents may result in a lower yield than
                        lower-quality or longer-term investments and may prevent
                        the Fund from meeting its investment objective.


                        While the Fund is engaged in a temporary defensive
                        position, it will not be pursuing its investment
                        objective. Therefore, the Fund will pursue a temporary
                        defensive position only when market conditions warrant.

                      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, money
              market mutual funds and bank money market
              deposit accounts.


--------------------------------------------------------------------------------
PORTFOLIO
   TURNOVER             The Fund may engage in active and frequent trading of
                        portfolio securities to achieve its 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 Fund. The Fund
                        anticipates a portfolio turnover rate of between
                        50-100%.
<PAGE>   12

ONE GROUP(R)

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

                                   How to Do Business with
                                   One Group Mutual Funds

--------------------------------------------------------------------------------
PURCHASING FUND
   SHARES

WHERE CAN I BUY SHARES? You may purchase Fund shares from the following sources:

                        - The One Group Services Company, and

                        - Shareholder Servicing Agents. These include investment
                          advisors, brokers, financial planners, banks,
                          insurance companies, retirement or 401(k) plan
                          sponsors or other intermediaries. Shares purchased
                          this way will be held for you by the Shareholder
                          Servicing Agent.

WHEN CAN I BUY SHARES?  - Purchases may be made on any business day. This
                          includes any day that the Fund is open for business,
                          other than weekends and days on which the New York
                          Stock Exchange ("NYSE") is closed, including the
                          following holidays: New Year's Day, Martin Luther
                          King, Jr. Day, Presidents' Day, Good Friday, Memorial
                          Day, Independence Day, Labor Day, Thanksgiving and
                          Christmas Day.

                        - Purchase requests received by The One Group Services
                          Company before 4 p.m. Eastern Time ("ET") will be
                          effective that day. On occasion, the NYSE will close
                          before 4 p.m. ET. When that happens, purchase requests
                          received after the NYSE closes will be effective the
                          following business day.

                        - If a Shareholder Servicing Agent holds your shares, it
                          is the responsibility of the Shareholder Servicing
                          Agent to send your purchase or redemption order to the
                          Fund. Your Shareholder Servicing Agent may have an
                          earlier cut-off time for purchase and redemption
                          requests.

                        - The One Group Services Company can reject a purchase
                          order if it does not think that it is in the best
                          interests of a Fund and/or its shareholders to accept
                          the order.

                        - Shares are electronically recorded. Therefore,
                          certificates will not be issued.

WHAT KIND OF SHARES CAN
  I BUY?                The Fund offers the following classes of shares:

                        - Class A shares are available to the general public.


                        - Class I shares are available to institutional
                          investors such as corporations, pension and profit
                          sharing plans, and foundations, and any organization
                          authorized to act in a fiduciary, advisory, custodial
                          or agency capacity. We will refer to these entities as
                          "Intermediaries."



10
<PAGE>   13

                                                                              11

HOW MUCH DO SHARES
  COST?
                        - Shares are sold at net asset value ("NAV").

                        - Each class of shares has a different NAV. This is
                          primarily because each class has different
                          distribution expenses.

                        - NAV per share is calculated by dividing the total
                          market value of the Fund's investments and other
                          assets allocable to a class (minus class expenses) by
                          the number of outstanding shares in that class.

                        - NAV is calculated each business day following the
                          close of the NYSE at 4:00 p.m. ET. On occasion, the
                          NYSE will close before 4 p.m. ET. When that happens,
                          NAV will be calculated as of the time the NYSE closes.
HOW DO I OPEN AN
ACCOUNT?
                        1. Read the prospectus carefully.

                        2. Decide how much you want to invest.

                          - The minimum initial investment is $200,000. You also
                            must maintain a minimum account balance of $200,000.

                          - Subsequent investments must be at least $5,000.

                          - The One Group Services Company may waive these
                            minimums.

                        3. Complete the Account Application Form. Be sure to
                           sign up for all of the account privileges that you
                           plan to take advantage of. Doing so now means that
                           you will not have to complete additional paperwork
                           later.

                        4. Send the completed application and authorize a wire
                           to:

                            STATE STREET BANK AND TRUST COMPANY
                            C/O ONE GROUP
                            P.O. BOX 8528
                            BOSTON, MA 02266-8528

                        5. If you purchase shares through a Shareholder
                           Servicing Agent, you may be required to complete
                           additional forms or follow additional procedures. You
                           should contact your Shareholder Servicing Agent
                           regarding purchases, exchanges and redemptions.

                        6. If you have any questions, contact your Shareholder
                           Servicing Agent or call The One Group Services
                           Company at 1-877-691-1118.

CAN I PURCHASE SHARES
  OVER THE TELEPHONE?
                          Yes. Simply select this option on your Account
Application Form and then:

                          - Contact your Shareholder Servicing Agent or The One
                            Group Services Company at 1-877-691-1118 to relay
                            your purchase instructions.

                          - Initiate a wire transfer payable to "One Group
                            Mutual Funds" to State Street Bank and Trust Company
                            to the following wire address:

                            STATE STREET BANK AND TRUST COMPANY
                            ATTN: CUSTODY AND SHAREHOLDER SERVICES
                            ABA 011 000 028
                            DDA 99034167
                            FBO ONE GROUP FUND
                              (EX: ONE GROUP MORTGAGE-BACKED SECURITIES FUND)
                            YOUR ACCOUNT NUMBER
                              (EX: 123456789)
                            YOUR ACCOUNT REGISTRATION
                              (EX: ABC CORPORATION)
<PAGE>   14

12

                        - One Group uses reasonable procedures to confirm that
                          instructions given by telephone are genuine. These
                          procedures include recording telephone instructions
                          and asking for personal identification. If these
                          procedures are followed, One Group will not be
                          responsible for any loss, liability, cost or expense
                          of acting upon unauthorized or fraudulent
                          instructions; you bear the risk of loss.

                        - You may revoke your right to make purchases over the
                          telephone by sending a letter to:

                            STATE STREET BANK AND TRUST COMPANY
                            C/O ONE GROUP
                            P.O. BOX 8528
                            BOSTON, MA 02266-8528

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

SALES CHARGES           The One Group Services Company compensates Shareholder
                        Servicing Agents who sell shares of the Fund.
                        Compensation comes from 12b-1 fees and payments by The
                        One Group Services Company from its own resources.

                  12b-1
FEES
-------------------------
                        The Fund has adopted a plan under Rule 12b-1 that allows
                        it to pay distribution and shareholder servicing fees
                        for the sale and distribution of shares of the Fund.
                        These fees are called 12b-1 fees. The Fund pays 12b-1
                        fees to The One Group Services Company as compensation
                        for its services and expenses. The One Group Services
                        Company in turn pays all or part of the 12b-1 fee to
                        Shareholder Servicing Agents that sell shares of One
                        Group.

                        The 12b-1 fees vary by share class as follows:

                        - Class A shares pay a 12b-1 fee of .35% of the average
                          daily net assets of the Fund, which is currently being
                          waived to .25%.

                        - There are no 12b-1 fees for Class I shares.

                        - The One Group Services Company may use up to .25% of
                          the fees for shareholder servicing and up to .75% for
                          distribution.

                        - The One Group Services Company may pay 12b-1 fees to
                          its affiliates and to Banc One Investment Advisors and
                          its affiliates (or any sub-advisor) for brokerage and
                          other agency transactions.

                        - The One Group Services Company compensates Shareholder
                          Servicing Agents who sell shares of the Fund.
                          Compensation comes from 12b-1 fees and payments by The
                          One Group Services Company from its own resources.

                        - Because 12b-1 fees are paid out of Fund assets on an
                          on-going basis, over time these fees will increase the
                          cost of your investment and may cost you more than
                          paying other types of sales charges.
<PAGE>   15

                                                                              13

--------------------------------------------------------------------------------
EXCHANGING FUND
   SHARES

WHAT ARE MY EXCHANGE
  PRIVILEGES?           You may make the following exchanges:

                        - Class I shares of the Fund may be exchanged for Class
                          A shares of the Fund or for Class A or Class I shares
                          of another One Group Fund.


                        - Class A shares of the Fund may be exchanged for Class
                          I shares of the Fund or for Class I shares of another
                          One Group Fund, but only if you are eligible to
                          purchase those shares.


                        - One Group does not charge a fee for this privilege. In
                          addition, One Group may change the terms and
                          conditions of your exchange privileges upon 60 days
                          written notice.

WHEN ARE EXCHANGES
  PROCESSED?            Exchanges are processed the same business day they are
                        received, provided:

                        - State Street Bank and Trust Company receives the
                          request by 4:00 p.m. ET.

                        - You have provided One Group with all of the
                          information necessary to process the exchange.

                        - You have received a current prospectus of the Fund or
                          Funds in which you wish to invest.

                        - You have contacted your Shareholder Servicing Agent,
                          if necessary.

ARE EXCHANGES TAXABLE?  Generally:


                        - An exchange between Funds is considered a sale and may
                          result in a capital gain or loss for federal income
                          tax purposes.


                        - You should talk to your tax advisor before making an
                          exchange.

ARE THERE LIMITS ON
  EXCHANGES?            Yes. The exchange privilege is not intended as a way for
                        you to speculate on short-term movements in the market.
                        Therefore:


                        - To prevent disruptions in the management of the Funds,
                          One Group limits excessive exchange activity. Exchange
                          activity is excessive if it EXCEEDS TWO SUBSTANTIVE
                          EXCHANGE REDEMPTIONS WITHIN 30 DAYS OF EACH OTHER.



                        - Excessive exchange activity will result in revocation
                          of your exchange privileges.


                        - In addition, One Group reserves the right to reject
                          any exchange request (even those that are not
                          excessive) if the Fund reasonably believes that the
                          exchange will result in excessive transaction costs or
                          otherwise adversely affect other shareholders.
<PAGE>   16


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

REDEEMING FUND

   SHARES

WHEN CAN I REDEEM
  SHARES?               You may redeem all or some of your shares on any day
                        that the Fund is open for business.

                        - Redemption requests received by The One Group Services
                          Company before 4:00 p.m. ET will be effective that
                          day.

HOW DO I REDEEM SHARES? Unless you have selected the telephone option on your
                        Account Application Form, you must send a written
                        redemption request to your Shareholder Servicing Agent,
                        if applicable, or to State Street Bank and Trust Company
                        at the following address:

                            state street bank and trust company
                            c/o one group
                            p.o. box 8528
                            boston, ma 02266-8528

                        - You may request redemption forms by calling The One
                          Group Services Company at 1-877-691-1118

                        - State Street Bank and Trust Company may require that
                          the signature on your redemption request be guaranteed
                          by a participant in the Securities Transfer
                          Association Medallion Program or the Stock Exchange
                          Medallion Program, unless:

                          1. the redemption is payable to the shareholder of
                             record; and

                          2. the redemption check is mailed to the shareholder
                             at the record address; and

                          3. the redemption is payable by wire or bank transfer
                             (ACH) to a pre-existing bank account.

                        - On the Account Application Form you may elect to have
                          the redemption proceeds mailed or wired to:

                          1. A designated commercial bank; or

                          2. Your Shareholder Servicing Agent.

                        - Your redemption proceeds will ordinarily be paid
                          within seven days after receipt of the redemption
                          request.

14
<PAGE>   17

                                                                              15

WHAT WILL MY SHARES BE
  WORTH?                - You will receive the NAV calculated after the
                          redemption request is received. Please read "How Much
                          Do My Shares Cost?"

CAN I REDEEM BY
  TELEPHONE?            Yes, if you selected this option on your Account
                        Application Form.

                        - Call your Shareholder Servicing Agent or The One Group
                          Services Company at 1-877-691-1118 to relay your
                          redemption request.

                        - Your redemption proceeds will be mailed or wired to
                          the commercial bank account you designated on your
                          Account Application Form.

                        - One Group uses reasonable procedures to confirm that
                          instructions given by telephone are genuine. These
                          procedures include recording telephone instructions
                          and asking for personal identification. If these
                          procedures are followed, One Group will not be
                          responsible for any loss, liability, cost or expense
                          of acting upon unauthorized or fraudulent
                          instructions; you bear the risk of loss.

 ADDITIONAL INFORMATION
 REGARDING REDEMPTIONS
--------------------------------
                        - Generally, all redemptions will be for cash. However,
                          if you redeem shares worth $500,000 or more, the Fund
                          reserves the right to pay part or all of your
                          redemption proceeds in readily marketable securities
                          instead of cash. If payment is made in securities, the
                          Fund will value the securities selected in the same
                          manner in which it computes its NAV. This process
                          minimizes the effect of large redemptions on the Fund
                          and its remaining shareholders.

                        - One Group may suspend your ability to redeem when:

                          1. Trading on the NYSE is restricted.

                          2. The NYSE is closed (other than weekend and holiday
                             closings).

                          3. The SEC has permitted a suspension.

                          4. An emergency exists.

                          The Statement of Additional Information offers more
                          details about this process.


                        - You generally will recognize a gain or loss on a
                          redemption for federal income tax purposes. You should
                          talk to your tax adviser before making a redemption.

<PAGE>   18



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

            VOTING RIGHTS
-------------------------
                        The Fund does not hold annual shareholder meetings, but
                        may hold special meetings. The special meetings are
                        held, for example, to elect or remove Trustees, change
                        the Fund's fundamental investment objective, or approve
                        an investment advisory contract.

                        As a Fund shareholder, you have one vote for each share
                        you own. The Fund, and each class of shares within each
                        Fund, votes separately on matters relating solely to
                        that Fund or class, or which affect that Fund or class
                        differently. However, all shareholders will have equal
                        voting rights on matters that affect all shareholders
                        equally.

        DIVIDEND POLICIES

--------------------------------
                        DIVIDENDS. The Fund generally declares dividends once
                        each month. Dividends are distributed on the first
                        business day of the next month after they are declared.
                        Capital gains, if any, for the Fund are distributed at
                        least annually.


                        The Fund pays dividends and distributions on a per-share
                        basis. This means that the value of your shares will be
                        reduced by the amount of the payment.

                        Dividends payable on Class I shares will be more than
                        those payable on Class A shares. This is because Class A
                        shares have higher distribution expenses.

                        DIVIDEND REINVESTMENT. You automatically will receive
                        all income dividends and capital gain distributions in
                        additional shares of the same Fund and class. The value
                        of the shares distributed is the NAV determined
                        immediately following the dividend record date.

            TAX TREATMENT
          OF SHAREHOLDERS
--------------------------------
                        TAXATION OF SHAREHOLDER TRANSACTIONS. A sale, exchange,
                        or redemption of Fund shares generally will produce
                        either a taxable gain or a loss. You are responsible for
                        any tax liabilities generated by your transactions.
                        Reinvested dividends and distributions receive the same
                        tax treatment as dividends and distributions paid in
                        cash.

              TAXATION OF
            DISTRIBUTIONS
--------------------------------
                        TAXATION OF DISTRIBUTIONS. The Fund will distribute
                        substantially all of its net investment income
                        (including, for this purpose, the excess of net
                        short-term capital gains over net long-term capital
                        losses) and net capital gains (i.e., the excess of net
                        long-term capital gains over net short-term capital
                        losses) on at least an annual basis.

16
<PAGE>   19

                                                                              17

              TAXATION OF
         RETIREMENT PLANS
--------------------------------

                        Distributions by the Fund to qualified retirement plans
                        generally will not be taxable. However, if shares are
                        held by a plan that ceases to qualify for tax-exempt
                        treatment or by an individual who has received shares as
                        a distribution from a retirement plan, the distributions
                        will be taxable to the plan or individual. If you are
                        considering purchasing shares with qualified retirement
                        plan assets, you should consult your tax advisor for a
                        more complete explanation of the federal, state, local
                        and (if applicable) foreign tax consequences of making
                        such an investment.


              TAXATION OF

   ZERO COUPON SECURITIES

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

                        The Fund may acquire certain securities issued with
                        original issue discount (including zero coupon
                        securities). Current federal tax requires that a holder
                        (such as the Fund) of such a security must include in
                        taxable income a portion of the original issue discount
                        which accrues during the tax year on such security even
                        if the Fund receives no payment in cash on the security
                        during the year. As an investment company, the Fund must
                        pay out substantially all of its net investment income
                        each year, including any original issue discount.
                        Accordingly, the Fund may be required to pay out in
                        income distribution each year an amount that is greater
                        than the total amount of cash interest the Fund actually
                        received. Such distributions will be made from the cash
                        assets of the Fund or by liquidation of investments if
                        necessary. If a distribution of cash necessitates the
                        liquidation of investments, Banc One Investment Advisors
                        will select which securities to sell.


    SHAREHOLDER INQUIRIES
--------------------------------
                        If you have any questions or need additional
                        information, please write to The One Group Services
                        Company at 3435 Stelzer Road, Columbus, OH 43219, call
                        1-877-691-1118 or visit www.onegroup.com.

                REPORTING

--------------------------------
                        In March and September, you will receive a financial
                        report from One Group. In addition, One Group will
                        periodically send you proxy statements and other
                        reports.

<PAGE>   20

ONE GROUP(R)

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

                                   Management of
                                   One Group Mutual Funds

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

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 Funds and
                        continuously reviews, supervises and administers each
                        Fund's investment program. Banc One Investment Advisors
                        performs its responsibilities subject to the supervision
                        of, and policies established by, the Trustees of One
                        Group Mutual Funds. 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 June 30, 1999, Banc One Investment
                        Advisors, an indirect wholly-owned subsidiary of Bank
                        One Corporation, managed over $131 billion in assets.


--------------------------------------------------------------------------------
   MANAGERS   THE FUND  The Fund is managed by a team of Fund managers, research
                        analysts and fixed income traders. The team works
                        together to establish general duration and sector
                        strategies for the Fund. Each team member makes
                        recommendations about securities in the Fund. The
                        research analysts and trading personnel provide
                        individual security and sector recommendations, while
                        the portfolio managers select and allocate individual
                        securities in a manner designed to meet the investment
                        objective of the Fund.


18

<PAGE>   21

ONE GROUP(R)

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

                                                                              19

                        Appendix A
                    ------------------------------------------------------------
INVESTMENT
   PRACTICES            The Fund invests in a variety of securities and employs
                        a number of investment techniques. Each security and
                        technique involves certain risks. What follows is a list
                        of some of the securities and techniques utilized by the
                        Fund, as well as the risks inherent in their use. 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>
                                                                                                         RISK
                                      INSTRUMENT                                                         TYPE
----------------------------------------------------------------------------------------------------------------
<S>                                   <C>                                                             <C>
                                      U.S. Treasury Obligations: Bills, notes, bonds, STRIPS,         Market
                                      and CUBES.
                                      --------------------------------------------------------------------------
                                      Treasury Receipts: TRS, TIGRs, and CATS.                        Market
                                      --------------------------------------------------------------------------
                                      U.S. Government Agency Securities: Securities issued by         Market
                                      agencies and instrumentalities of the U.S. government. These    Credit
                                      include Ginnie Mae, Fannie Mae, and Freddie Mac.
                                      --------------------------------------------------------------------------
                                      Certificates of Deposit:Negotiable instruments with a stated    Market
                                      maturity.                                                       Credit
                                                                                                      Liquidity
                                      --------------------------------------------------------------------------
                                      Time Deposits: Non-negotiable receipts issued by a bank in      Liquidity
                                      exchange for the deposit of funds.                              Credit
                                                                                                      Market
                                      --------------------------------------------------------------------------
                                      Repurchase Agreements: The purchase of a security and the       Credit
                                      simultaneous commitment to return the security to the seller    Market
                                      at an agreed upon price on an agreed upon date. This is         Liquidity
                                      treated as a loan.
                                      --------------------------------------------------------------------------
                                      Reverse Repurchase Agreements: The sale of a security and       Market
                                      the simultaneous commitment to buy the security back at an      Leverage
                                      agreed upon price on an agreed upon date. This is treated as
                                      a borrowing by a Fund.
                                      --------------------------------------------------------------------------
                                      Securities Lending: The lending of up to 33 1/3% of the         Credit
                                      Fund's total assets. In return, the Fund will receive cash,     Market
                                      other securities, and/or letters of credit as collateral.       Leverage
                                      --------------------------------------------------------------------------
</TABLE>

<PAGE>   22

20


<TABLE>
<CAPTION>
                                                                                                         RISK
                                      INSTRUMENT                                                         TYPE
----------------------------------------------------------------------------------------------------------------
<S>                                   <C>                                                             <C>
                                      When-Issued Securities and Forward Commitments: Purchase or     Market
                                      contract to purchase securities at a fixed price for            Leverage
                                      delivery at a future date.                                      Liquidity
                                                                                                      Credit
                                      --------------------------------------------------------------------------
                                      Investment Company Securities: Shares of other mutual funds,    Market
                                      including One Group money market 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 that can       Market
                                      convert to common stock.                                        Credit
                                      --------------------------------------------------------------------------
                                      Call and Put Options: A call option gives the buyer the         Management
                                      right to buy, and obligates the seller of the option to         Liquidity
                                      sell, a security at a specified price. A put option gives       Credit
                                      the buyer the right to sell, and obligates the seller of the    Market
                                      option to buy, a security at a specified price. The Fund        Leverage
                                      will sell covered call and secured put options.
                                      --------------------------------------------------------------------------
                                      Futures and Related Options: A contract providing for the       Management
                                      future sale and purchase of a specified amount of a             Market
                                      specified security, class of securities, or an index at a       Credit
                                      specified time in the future and at a specified price.          Liquidity
                                                                                                      Leverage
                                      --------------------------------------------------------------------------
                                      Real Estate Investment Trusts ("REITs"): Pooled investment      Liquidity
                                      vehicles which invest primarily in income-producing real        Management
                                      estate or real estate related loans or interest.                Market
                                                                                                      Regulatory
                                                                                                      Tax
                                                                                                      Prepayment
                                      --------------------------------------------------------------------------
                                      Bankers' Acceptances: Bills of exchange or time drafts drawn    Credit
                                      on and accepted by a commercial bank. Maturities are            Liquidity
                                      generally six months or less.                                   Market
                                      --------------------------------------------------------------------------
                                      Commercial Paper: Secured and unsecured short-term              Credit
                                      promissory notes issued by corporations and other entities.     Liquidity
                                      Maturities generally vary from a few days to nine months.       Market
                                      --------------------------------------------------------------------------
                                      Foreign Securities: Stocks issued by foreign companies, as      Market
                                      well as commercial paper of foreign issuers and obligations     Political
                                      of foreign banks, overseas branches of U.S. banks and           Liquidity
                                      supranational entities. Includes American Depositary            Foreign
                                      Receipts and Global Depositary Receipts, and American           Investment
                                      Depositary Securities.
                                      --------------------------------------------------------------------------
</TABLE>

<PAGE>   23

                                                                              21

<TABLE>
<CAPTION>
                                                                                                         RISK
                                      INSTRUMENT                                                         TYPE
----------------------------------------------------------------------------------------------------------------
<S>                                   <C>                                                             <C>
                                      Restricted Securities: Securities not registered under the      Liquidity
                                      Securities Act of 1933, such as privately placed commercial     Market
                                      paper and Rule 144A securities.                                 Credit
                                      --------------------------------------------------------------------------
                                      Variable and Floating Rate Instruments: Obligations with        Credit
                                      interest rates which are reset daily, weekly, quarterly or      Liquidity
                                      some other period and which may be payable to the Fund on       Market
                                      demand.
                                      --------------------------------------------------------------------------
                                      Preferred Stock: A class of stock that generally pays a         Market
                                      dividend at a specified rate and has preference over common
                                      stock in the payment of dividends and in liquidation.
                                      --------------------------------------------------------------------------
                                      Mortgage-Backed Securities: Debt obligations secured by real    Prepayment
                                      estate loans and pools of loans. These include                  Market
                                      collateralized mortgage obligations ("CMOs") and Real Estate    Credit
                                      Mortgage Investment Conduits ("REMICs").                        Regulatory
                                      --------------------------------------------------------------------------
                                      Corporate Debt Securities: Corporate bonds and                  Market
                                      non-convertible debt securities.                                Credit
                                      --------------------------------------------------------------------------
                                      Demand Features: Securities that are subject to puts and        Market
                                      standby commitments to purchase the securities at a fixed       Liquidity
                                      price (usually with accrued interest) within a fixed period     Management
                                      of time following demand by the Fund.
                                      --------------------------------------------------------------------------
                                      Asset-Backed Securities: Securities secured by company          Prepayment
                                      receivables, home equity loans, truck and auto loans,           Market
                                      leases, credit card receivables and other securities backed     Credit
                                      by other types of receivables or other assets.                  Regulatory
                                      --------------------------------------------------------------------------
                                      Mortgage Dollar Rolls: A transaction in which the Fund sells    Prepayment
                                      securities for delivery in a current month and                  Market
                                      simultaneously contracts with the same party to repurchase      Regulatory
                                      similar but not identical securities on a specified future
                                      date.
                                      --------------------------------------------------------------------------
                                      Adjustable Rate Mortgage Loans ("ARMS"): Loans in a mortgage    Prepayment
                                      pool which provide for a fixed initial mortgage interest        Market
                                      rate for a specified period of time, after which the rate       Credit
                                      may be subject to periodic adjustments.                         Regulatory
                                      --------------------------------------------------------------------------
                                      Swaps, Caps and Floors: The Fund may enter into these           Management
                                      transactions to manage its exposure to changing interest        Credit
                                      rates and other factors. Swaps involve an exchange of           Liquidity
                                      obligations by two parties. Caps and floors entitle a           Market
                                      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.
                                      --------------------------------------------------------------------------
</TABLE>
<PAGE>   24

22


<TABLE>
<CAPTION>
                                                                                                         RISK
                                      INSTRUMENT                                                         TYPE
----------------------------------------------------------------------------------------------------------------
<S>                                   <C>                                                             <C>
                                      New Financial Products: New options and futures contracts       Management
                                      and other financial products continue to be developed and       Credit
                                      the Fund may invest in such options, contracts and products.    Market
                                                                                                      Liquidity
                                      --------------------------------------------------------------------------
                                      Structured Instruments: Debt securities issued by agencies      Market
                                      and instrumentalities of the U.S. government, banks,            Liquidity
                                      municipalities, corporations and other businesses whose         Management
                                      interest and/or principal payments are indexed to foreign       Credit
                                      currency exchange rates, interest rates, or one or more         Foreign
                                      other referenced indices.                                       Investment
                                      --------------------------------------------------------------------------
                                      Municipal Securities: Securities issued by a state or           Market
                                      political subdivision to obtain funds for various public        Credit
                                      purposes. Municipal securities include private activity         Political
                                      bonds and industrial development bonds, as well as General      Tax
                                      Obligation Notes, Tax Anticipation Notes, Bond Anticipation     Regulatory
                                      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.
                                      --------------------------------------------------------------------------
                                      Zero Coupon Debt Securities: Bonds and other debt that pay      Credit
                                      no interest, but are issued at a discount from their value      Market
                                      at maturity. When held to maturity, their entire return         Zero-Coupon
                                      equals the difference between their issue price and their
                                      maturity value.
                                      --------------------------------------------------------------------------
                                      Zero-Fixed-Coupon Debt Securities: Zero coupon debt             Credit
                                      securities which convert on a specified date to interest        Market
                                      bearing debt securities.                                        Zero
                                                                                                      Coupon
                                      --------------------------------------------------------------------------
                                      Stripped Mortgage-Backed Securities: Derivative multi-class     Prepayment
                                      mortgage securities usually structured with two classes of      Market
                                      shares that receive different proportions of the interest       Credit
                                      and principal from a pool of mortgage-backed obligations.       Regulatory
                                      These include IOs and POs.
                                      --------------------------------------------------------------------------
                                      Inverse Floating Rate Instruments: Floating rate debt           Market
                                      instruments with interest rates that reset in the opposite      Leverage
                                      direction from the market rate of interest to which the         Credit
                                      inverse floater is indexed.
                                      --------------------------------------------------------------------------
                                      Loan Participations and Assignments: Participations in, or      Credit
                                      assignments of all or a portion of loans to corporations or     Political
                                      to governments, including governments of the less developed     Liquidity
                                      countries ("LDCs").                                             Foreign
                                                                                                      Investment
                                                                                                      Market
                                      --------------------------------------------------------------------------
</TABLE>

<PAGE>   25

                                                                              23


<TABLE>
<CAPTION>
                                                                                                         RISK
                                      INSTRUMENT                                                         TYPE
----------------------------------------------------------------------------------------------------------------
<S>                                   <C>                                                             <C>
                                      Fixed Rate Mortgage Loans: Investments in fixed rate            Credit
                                      mortgage loans or mortgage pools which bear simple interest     Prepayment
                                      at fixed annual rates and have short- to long-term final        Regulatory
                                      maturities.                                                     Market
                                      --------------------------------------------------------------------------
                                      Short-Term Funding Agreements: Investments in short-term        Credit
                                      funding agreements issued by banks and highly rated U.S.        Liquidity
                                      insurance 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 Fund may fluctuate,
                        as will the value of your investment in the Fund.
                        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 Fund
                            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 the Fund's hedging transactions will be
                            effective.

                          - Speculative. To the extent that a derivative is not
                            used as a hedge, the Fund 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 Fund 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.
<PAGE>   26

24

                        - Management Risk. The risk that a strategy used by the
                          Fund'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 pre-paid, the Fund may have to
                          reinvest in securities with a lower yield. Further,
                          with early prepayment, the Fund may fail to recover
                          any premium paid, resulting in an unexpected capital
                          loss.


                        - 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. Also, the risk that the tax treatment of
                          municipal or other securities would be changed by
                          Congress thereby affecting the value of outstanding
                          securities .



                        - Regulatory Risk. The risk associated with federal and
                          state laws that 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 that pay interest
                          periodically.
<PAGE>   27

                           (Intentionally Left Blank)
<PAGE>   28

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

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

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

                        HOW CAN I GET MORE INFORMATION? You can get a free copy
                        of the semiannual/ annual reports or the SAI, request
                        other information or discuss your questions about the
                        Fund by calling 1-877-691-1118 or by writing the Funds
                        at:

                            ONE GROUP MUTUAL FUNDS
                            3435 STELZER ROAD
                            COLUMBUS, OHIO 43219
                            or visiting
                            WWW.ONEGROUP.COM

                        You can also review and copy the Fund's 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
                        Funds 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.

                        (Investment Company Act File No. 811-4236)

                                    TOG-F-134                   [ONE GROUP LOGO]
<PAGE>   29
PART B


Part B of Post Effective Amendment 43 (filed October 22, 1999) to the Trust's
Registration Statement on form N-1A is incorporated herein by reference.

<PAGE>   30
                       STATEMENT OF ADDITIONAL INFORMATION

                            ONE GROUP(R) MUTUAL FUNDS


                    ONE GROUP MORTGAGE-BACKED SECURITIES FUND

             (THE "FUND" OR THE "MORTGAGE-BACKED SECURITIES FUND")_

                                 AUGUST 18, 2000


This Statement of Additional Information is not a Prospectus, but supplements
and should be read in conjunction with the Prospectus for the One Group
Mortgage-Backed Securities Fund, dated August 18, 2000. This Statement of
Additional Information is incorporated in its entirety into the Fund's
Prospectus. A copy of the Prospectus is available without charge by writing to
The One Group Services Company, 3435 Stelzer Road, Columbus, Ohio 43219, or by
calling toll free (800) 480-4111.



<PAGE>   31

                                TABLE OF CONTENTS

                                                                           PAGE

THE TRUST
  INVESTMENT OBJECTIVES AND POLICIES.......................................
    Additional Information on Fund Instruments.............................
        Asset-Backed Securities............................................
        Bank Obligations...................................................
        Commercial Paper...................................................
        Convertible Securities.............................................
        Demand Features....................................................
        Foreign Investments................................................
            Risk Factors of Foreign Investments............................
            Limitations on the Use of Foreign Investments..................
        Futures and Options Trading........................................
            Futures Contracts..............................................
                Limitations on the Use of Futures Contracts................
                Risk Factors in Futures Transactions.......................
            Options Contracts..............................................
            Writing (Selling) Covered Calls................................
            Purchasing Call Options........................................
            Purchasing Put Options.........................................
            Secured Puts...................................................
            Straddles and Spreads..........................................
            Risk Factors in Options Transactions...........................
            Limitations on the Use of Options..............................
        Government Securities..............................................
          Investment Company Securities....................................
        Loan Participations and Assignments................................
        Mortgage-Related Securities........................................
           Mortgage-Backed Securities (CMOs and REMICs)....................
            Limitations on the Use of Mortgage Backed Securities...........
           Mortgage Dollar Rolls...........................................
           Stripped Mortgage Backed Securities.............................
           Adjustable Rate Mortgage Loans..................................
           Risk Factors of Mortgage-Related Securities.....................
        Municipal Securities...............................................
            Risk Factors in Municipal Securities...........................
            Limitations on the Use of Municipal Securities.................
         New Financial Products............................................
        Preferred Stock....................................................
        Real Estate Investment Trusts ("REITs")............................
        Repurchase Agreements..............................................
        Reverse Repurchase Agreements......................................
        Restricted Securities..............................................
        Securities Lending.................................................
        Short-term Funding Agreements......................................
        Structured Instruments.............................................
        Swaps, Caps and Floors.............................................
        Treasury Receipts..................................................
<PAGE>   32


        U.S. Treasury Obligations..........................................
        Variable and Floating Rate Instruments.............................
        Warrants...........................................................
        When-Issued Securities and Forward Commitments.....................
                Investment Restrictions....................................
        Portfolio Turnover.................................................
        Additional Tax Information Concerning the Fund.....................
        VALUATION
            Valuation of the Fund..........................................
        Additional Information Regarding the Calculation of Per Share
        Net Asset Value....................................................
        Additional Purchase and Redemption Information.....................
        Exchanges..........................................................
        Redemptions........................................................
MANAGEMENT OF THE TRUST ...................................................

    Trustees & Officers....................................................
    Investment Advisor.....................................................
    Codes of Ethics........................................................
    Portfolio Transactions.................................................
    Administrator and Sub-Administrator....................................
    Distribution Plan......................................................

    Cash Compensation to Shareholder Servicing Agents......................
    Custodian, Transfer Agent and Dividend Disbursing Agent................
    Subcustodian...........................................................
    Experts     ...........................................................
    ADDITIONAL INFORMATION.................................................
    Description of Shares..................................................
    Shareholder and Trustee Liability......................................
    Performance ...........................................................
    Calculation of Performance Data........................................
    Miscellaneous..........................................................
    FINANCIAL STATEMENTS...................................................

    Appendix A - Description of Ratings







<PAGE>   33
                                    THE TRUST


         One Group Mutual Funds (the "Trust") is an open-end management
investment company. The Trust was formed as a Massachusetts Business Trust on
May 23, 1985. The Trust changed its name from The One Group(R) to One Group
MutuaL Funds in March, 1999. The Trust consists of fifty-five series of units of
beneficial interest ("Shares") each representing interests in one of fifty-five
separate investment portfolios ("Funds"). This Statement of Additional
Information contains information relating to the One Group Mortgage-Backed
Securities Fund only.

         Information relating to the Funds other than the One Group
Mortgage-Backed Securities Fund is contained in separate prospectuses and a
separate Statement of Additional Information dated November 1, 1999 which are
incorporated by reference and which may be obtained by writing to the
Distributor for the Trust, The One Group Services Company, 3435 Stelzer Road,
Columbus, Ohio 43219, or by calling toll free 1 (800) 480-4111.

         The Fund is diversified, as defined under the Investment Company Act of
1940, as amended (the "1940 Act). The Shares of the Fund are or will be offered
in two separate Classes: Class A or Class I.

                       INVESTMENT OBJECTIVES AND POLICIES


         The following policies supplement the Fund's investment objective and
policies as set forth in the Prospectus for the Fund.


ADDITIONAL INFORMATION ON FUND INSTRUMENTS

ASSET-BACKED SECURITIES

         Asset-backed securities consist of 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, the Fund may have to reinvest the proceeds from the
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, the Fund 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 consist of bankers' acceptances, certificates of
deposit, and time deposits.

         Bankers' Acceptances are negotiable drafts or bills of exchange
typically drawn by an importer or exporter to pay for specific merchandise,
which are "accepted" by a bank, meaning, in effect, that the bank
unconditionally agrees to pay the face value of the instrument on maturity.
Bankers' acceptances invested in by the Funds will be those 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).


<PAGE>   34

         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. Certificates of deposit
will be those of 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 Fund may also invest in Eurodollar certificates of deposit, which
are U.S. dollar-denominated certificates of deposit issued by branches of
foreign and domestic banks located outside the United States, and Yankee
certificates of deposit, which 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 Fund may also invest in obligations (including banker's acceptances
and certificates of deposit) denominated in foreign currencies (see "Foreign
Investments" herein).

         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 and those exceeding seven days
and with 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 the Fund could purchase certificates of deposit.

COMMERCIAL PAPER

         Commercial paper consists of promissory notes issued by corporations.
Although such notes are generally unsecured, the Fund 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 Fund only purchases commercial paper
that meets the following criteria:

         The Fund 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.

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 Fund bases its 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.


                                       5
<PAGE>   35


DEMAND FEATURES

         The Fund may acquire securities that are subject to puts and standby
commitments ("Demand Features ") to purchase the securities at their principal
amount (usually with accrued interest) within a fixed period (usually seven
days) following a demand by the Fund. 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 Fund expects that it 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 have the effect of reducing the yield otherwise payable on the
underlying security.

         Under a "Stand-By Commitment," a dealer would agree to purchase, at the
Fund's option, specified securities at a specified price. The Fund will acquire
these commitments solely to facilitate portfolio liquidity and does not intend
to exercise its rights thereunder for trading purposes. Stand-by commitments may
also be referred to as put options. The Fund will generally limit its
investments in stand-by commitments to 25% of its total assets.

         The purpose of engaging in transactions involving puts is to maintain
flexibility and liquidity to permit the Fund to meet redemption requests and
remain as fully invested as possible.

FOREIGN INVESTMENTS

         The Fund 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 Bankers' Acceptances, Canadian Time Deposits and Yankee
Certificates of Deposits, and investments in Canadian Commercial Paper, and
Europaper. Securities of foreign issuers may include 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 may subject the Fund
         to 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 respecting 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 the Fund's investments denominated in foreign
         currencies and any funds held in foreign currencies will be affected
         by: (i) changes in currency exchange rates; (ii) the relative strength
         of those 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,
         if any, to be distributed to Shareholders by

                                       6
<PAGE>   36

         the Fund. The exchange rates between the U.S. dollar and other
         currencies are determined by the forces of supply and demand in foreign
         exchange markets.

         Limitations on the use of Foreign Investments. Investments in all types
of foreign obligations or securities will not exceed 25% of the net assets of
the Fund.

                           FUTURES AND OPTIONS TRADING

         The Fund 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.

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 pursuant to which 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 most futures contracts by their terms 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 the Fund 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 Fund is 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 Fund
expects 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 Fund intends 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 such
futures and options are not for "bona fide hedging purposes" (as defined by the
CFTC), the aggregate initial margin and premiums on such positions (excluding
the amount by which options are in the money) do not exceed 5% of the Fund's
total assets at current value. The Fund, however, may invest more than such
amount for bona fide hedging purposes, and also may invest more than such amount
if it obtains authority to do so from the CFTC without rendering the Fund a
commodity pool operator or adversely affecting its status as an investment
company for federal securities laws.


                                       7
<PAGE>   37

         The Fund 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, the Fund 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, the Fund, through
the purchase of such contracts, can attempt to secure better rates or prices for
the Fund than might later be available in the market when it effects anticipated
purchases.

         Although techniques other than the sale and purchase of futures
contracts could be used to control the Fund's exposure to market fluctuations,
the use of futures contracts may be a more effective means of managing this
exposure. While the Fund 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.

         The Fund's ability to effectively utilize futures trading depends on
several factors. First, it is possible that there will not be a perfect price
correlation between the futures contracts and their underlying reference
security or index. 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 the Fund could lose more than the
original margin deposit required to initiate a futures transaction.

LIMITATIONS ON THE USE OF FUTURES CONTRACTS

         The Fund will enter into futures contract transactions for purposes
other than bona fide hedging purposes to the extent that, immediately
thereafter, the sum of its initial margin deposits and premiums on open
contracts exceeds 5% of the market value of the Fund's total assets.

         The Fund has undertaken to restrict its futures contract trading as
         follows:

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

         2.       The Fund will not market itself to the public as a commodity
                  pool or otherwise as a vehicle for trading in the commodities
                  futures or commodity options markets;

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

         4.       The Fund 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 pursuant to requirements
imposed by the SEC. Under those requirements, where the Fund 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 the Fund, 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 the Fund "covers" a long position. For example, instead of
segregating assets, the Fund, 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 Fund. In
addition, where the Fund takes short positions, or engages in sales of call
options, it need not segregate assets if it "covers" these positions. For
example, where the Fund holds a short position in a futures contract, it may
cover by owning the instruments underlying the contract. The Fund 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 the Fund 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. The Fund could also cover this
position by holding a separate call option

                                       8
<PAGE>   38


permitting it to purchase the same futures contract at a price no higher than
the strike price of the call option sold by the Fund. 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 Fund.

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, the Fund would continue to be
          required to make daily cash payments to maintain the required margin.
          In such situations, if the Fund has insufficient cash, it may have to
          sell portfolio securities to meet daily margin requirements at a time
          when it may be disadvantageous to do so. In addition, the Fund may be
          required to make delivery of the instruments underlying futures
          contracts it holds. The inability to close options and futures
          positions also could have an adverse impact on the ability to
          effectively hedge such positions. The Fund 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. A 15% decrease would result in a loss
          equal to 150% of the original margin deposit if the contract were
          closed out. Thus, a purchase or sale of a futures contract may result
          in losses in excess of the amount invested in the contract. However,
          because the futures strategies engaged in by the Fund are only for
          risk management purposes, Banc One Investment Advisors does not
          believe that the Fund is subject to the risks of loss frequently
          associated with futures transactions. The Fund would presumably have
          sustained comparable losses if, instead of the futures contract, it
          had invested in the underlying financial instrument and sold it after
          the decline.

                 Correlation Risk. The Fund'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. It is also possible that the Fund
          could lose money on futures contracts and also experience a decline in
          value of its portfolio securities. There is also the risk of loss by
          the Fund of margin deposits in the event of bankruptcy of a broker
          with whom the Fund has an open position in a futures contract or
          related option.

                 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 the Fund'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. The Fund
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 the Fund anticipates purchasing at a later date, or
for other risk management strategies.

                                       9
<PAGE>   39


OPTIONS CONTRACTS

         The Fund may use options on securities or futures contracts as a
hedging device. An option gives the buyer of the option 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 such 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 such rules.

         A Put Option gives the buyer the right to sell the underlying futures
contract or security. The purchase price of an option is referred to as its
"premium." 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 Fund 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 Fund may write (sell) covered call options and purchase options to
close out options previously written by the Fund. The Fund' purpose in writing
covered call options is to generate additional premium income. This premium
income will serve to enhance the Fund's total return and will reduce the effect
of any price decline of the security involved in the option. Generally, the Fund
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 Fund. The Fund will write only covered call options. This means that the
Fund will only write a call option on a security which the Fund already owns.

         Fund securities on which call options may be written will be purchased
solely on the basis of investment considerations consistent with each Fund'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 the Fund will not do), but capable of
enhancing the Fund's total return. When writing a covered call option, the Fund,
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

                                       10
<PAGE>   40

loss should the price of the security decline. Unlike one who owns securities
not subject to an option, the Fund has no control 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 the Fund has written expires, the
Fund 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, the Fund 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 Fund's custodian.

         The Fund does not consider a security covered by a call to be "pledged"
as that term is used in the Fund's policy which limits the pledging or
mortgaging of its assets.

         The premium received is the market value of an option. The premium the
Fund 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 such 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, the Fund's Advisor, 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 the Fund
for writing covered call options will be recorded as a liability in the Fund'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 Fund 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, the Fund, 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 the Fund's best interest. A closing purchase
transaction consists of the Fund purchasing an option having the same terms as
the option sold by the Fund, and has the effect of cancelling the Fund's
position as a seller. The premium which the Fund 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 the Fund is exercised and the Fund delivers securities to the holder of a
call option, the Fund's turnover rate will increase, which would cause the Fund
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 will permit the Fund to
write another call option on the underlying security with either a different
exercise price or expiration date or both. If the Fund 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 the Fund will be
able to effect such closing transactions at a favorable price. If the Fund
cannot enter into such a 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. The Fund
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 the Fund 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, the Fund may
purchase an underlying security for delivery in accordance with an exercise
notice of a call option assigned to it, rather than delivering such security
from its portfolio. In such cases, additional costs will be incurred.

         The Fund 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

                                       11
<PAGE>   41

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 Fund.

         PURCHASING CALL OPTIONS

         The Fund may purchase call options to hedge against an increase in the
price of securities that the Fund wants ultimately to buy. Such hedge protection
is provided during the life of the call option since the Fund, 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 Fund might have
realized had it bought the underlying security at the time it purchased the call
option. In the event that 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 Fund, loss of the premium may be offset by a
decrease in the acquisition cost of securities by the Fund.

         PURCHASING PUT OPTIONS

         The Fund may also purchase put options to protect its portfolio
holdings in an underlying security against a decline in market value. Such hedge
protection is provided during the life of the put option since the Fund, 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 Fund 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 cost.
However, any loss of premium may be offset by an increase in the value of the
Fund's securities.

         SECURED PUTS

         The Fund 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 in excess of 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 Fund also may engage in straddles and spreads. In a straddle transaction,
the Fund either buys a call and a put or sells a call and a put on the same
security. In a spread, the Fund purchases and sells a call or a put. The Fund
will sell a straddle when Banc One Investment Advisors believes the price of a
security will be stable. The Fund will receive a premium on the sale of the put
and the call. A spread permits the Fund 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, the Fund runs the
          risk that it will lose its entire investment in the option in a
          relatively short period of time, unless the Fund 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, the Fund will lose part or all of its investment in the option.
          This contrasts with an investment by the Fund in the underlying
          securities, since the Fund 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 Fund 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 the Fund's ability to terminate option positions at
          times when Banc One Investment Advisors, deems it desirable to do so.
          The Fund will take an option position only if Banc One


                                       12
<PAGE>   42


         Investment Advisors believes there is a liquid secondary market for the
         option, however, there is no assurance that the Fund will be able to
         effect closing transactions at any particular time or at an acceptable
         price.

                 Liquidity. If a secondary trading market in options were to
          become unavailable, the Fund 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 the Fund'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 the Fund 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, the Fund 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, the Fund
          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 the Fund has
          expired, the Fund 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

         The Fund will limit the writing of put and call options to 25% of its
net assets. The Fund 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. Broker/Dealers with whom the Trust will enter into
such option transactions shall have a minimum net worth of $20,000,000.

GOVERNMENT SECURITIES

         The Fund invests 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.

                                       13
<PAGE>   43

         -        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. The Fund will invest in the obligations of such
                  agencies or instrumentalities only when Banc One Investment
                  Advisors believes that the credit risk with respect thereto 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.

 INVESTMENT COMPANY SECURITIES

         The Fund may invest up to 5% of its 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 its total assets in the securities of other investment companies. Other
investment company securities may include securities of a money market fund of
the Trust, 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 Fund may cause Shareholders to bear duplicate fees. Banc
One Investment Advisors will waive its fee attributable to the assets of the
investing fund invested in a money market fund of the Trust and in other funds
advised by Banc One Investment Advisors. Banc One Investment Advisors will also
waive its fees attributable to the assets of the Fund 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

         The Fund 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 Fund invests in Loans by
purchasing Loan Participations ("Participations") or assignments of all or a
portion of Loans ("Assignments") from third parties.

         Typically, the Fund will have a contractual relationship only with the
Lender and not with the borrower when it purchases a Participation. In contrast,
the Fund 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 the Fund 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, the Fund will invest
no more than 15% of its net assets in these investments. If a government entity
is a borrower on a Loan, the Fund will consider the government to be the issuer
of a Participation or Assignment for purposes of the Fund'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. The Fund 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 Fund anticipates 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
the Fund's ability to dispose of particular Assignments or Participations when
necessary to meet the Fund's liquidity needs in response to a specific economic
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 the Fund to assign a value to those securities when valuing
the Fund'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

                                       14
<PAGE>   44


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;


-        Non-governmental 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 stockholders. 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 Bank. Freddie Mac Certificates are not guaranteed by
          the United States or by any Federal Home Loan Banks 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 Fund does not currently intend to purchase residual
interests in REMICs. 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.

                 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 otherwise 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

                                       15
<PAGE>   45


         ("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."


                 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.


         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 Fund may invest may bear the same non-credit- related risks as do other
types of Z-Bonds. Z-Bonds in which the Fund may invest will not include residual
interest.

         Limitations on the use of Mortgage-Backed Securities. The Fund may
invest in mortgage-backed securities that are rated in one of the four highest
rating categories by at least one NRSRO at the time of investment or, if
unrated, determined by Banc One Investment Advisors to be of comparable quality.

         Mortgage Dollar Rolls. The Fund may enter into Mortgage Dollar Rolls in
which the Fund sells securities for delivery in the current month and
simultaneously contracts with the same counterparty to repurchase similar (same
type, coupon and maturity) but not identical securities on a specified future
date. When the Fund enters into mortgage dollar rolls, the Fund will hold and
maintain a segregated account until the settlement date. The segregated account
will contain cash or liquid, high grade

                                       16


<PAGE>   46

debt securities in an amount equal to the forward purchase price. The Fund
benefits from a mortgage dollar roll to the extent of any difference between:

         -        the price received for the securities sold and the lower
                  forward 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 forward
                  purchase.

         Unless such benefits exceed the income, capital appreciation or gains
on the securities sold as a part of the mortgage dollar roll, the investment
performance of the Fund 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 Fund currently intends 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 Fund 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.


         The Fund may invest in SMBS to enhance revenues or hedge against
interest rate risk. The Fund 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 Fund's limitations on investments in
illiquid securities.


         Adjustable Rate Mortgage Loans. The Fund 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>   47

         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 an applicable
lifetime maximum rate or below an applicable lifetime minimum rate for such ARM.
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
instead or as well 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 such 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 Fund's portfolio and
therefore in the net asset value of the Fund'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.


                                       18
<PAGE>   48

                 Interest Rate Sensitivity. If the Fund 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 since 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 Fund. In addition, regular
          payments received in respect of mortgage-related securities include
          both interest and principal. No assurance can be given as to the
          return the Fund will receive when these amounts are reinvested.

                 Market Value. The market value of the Fund's adjustable rate
          Mortgage-Backed Securities may be adversely affected if interest rates
          increase faster than the rates of interest payable on such securities
          or by the adjustable rate mortgage loans underlying such securities.
          Furthermore, adjustable rate Mortgage-Backed Securities or the
          mortgage loans underlying such 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 as a result
          of 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 Fund's principal investment to the extent of the
          premium paid. On the other hand, if such 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 Fund invests will be
          affected by the actual rate of payment (including prepayments) of
          principal of the underlying mortgage loans. The mortgage loans
          underlying such 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.

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

                                       19
<PAGE>   49

         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 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 such bonds is generally related to the credit of the bank selected to
provide the letter of credit underlying the bond. Payment of principal of and
interest on industrial development revenue bonds is the responsibility of the
corporate user (and any guarantor).

                                       20


<PAGE>   50

The Fund 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. The Fund 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 the Fund, 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 Fund. Banc One Investment Advisors will consider
such an event in determining whether the Fund 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.

         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


                                       21
<PAGE>   51

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 subsequent to 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;

          -         the Fund 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, such as the federal bankruptcy code, and laws, if any,
          which may be enacted by Congress or state legislatures extending the
          time for payment of principal or interest, or both, or imposing other
          constraints upon the enforcement of such obligations. 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.

                 Litigation and Current Developments. Such litigation or
          conditions may from time to time have the effect of introducing
          uncertainties in the market for tax-exempt obligations, 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 the Fund's Municipal
          Securities in the same manner.

                                       22
<PAGE>   52

                 New Legislation. From time to time, proposals have been
          introduced before Congress for the purpose of restricting or
          eliminating 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 such proposals could have on (i) the
          availability of Municipal Securities for investment by the Fund, and
          (ii) the value of the investment portfolios of the Fund.

         LIMITATIONS ON THE USE OF MUNICIPAL SECURITIES

The Fund may invest in Municipal Securities 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 such certificate or instrument, any discount accruing on such
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 Fund may also invest in Municipal Securities by purchasing from
banks participation interests in all or part of specific holdings of Municipal
Securities. Such participation 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 Fund in connection with the arrangement. The Fund
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 options and futures contracts continue to be
developed.These various products may be used to adjust the risk and return
characteristics of each Fund'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 consistent with expectations, the
performance of the Fund 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 Fund
to potentially greater return as well as potentially greater risk of loss than
more traditional fixed income investments.

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.

REAL ESTATE INVESTMENT TRUSTS ("REITS")

         The Fund 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. The Fund will
indirectly bear its proportionate share of expenses incurred by REITs in which
the Fund invests in addition to the expenses incurred directly by the Fund.

                                       23
<PAGE>   53

         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. REITs are also subject to the possibilities of 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 include:

          -    limited financial resources,

          -    infrequent or limited trading, and

          -    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,the Fund 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 Fund 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 were to default on its repurchase obligation or become
insolvent, the Fund 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 Fund 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 the
Fund would be entitled, as against a claim by such seller or its receiver or
trustee in bankruptcy, to retain the underlying securities, although (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 the Fund'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 the
Federal Reserve/Treasury book-entry system. Repurchase agreements are considered
by the SEC to be loans by the Fund 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.




                                       24
<PAGE>   54


REVERSE REPURCHASE AGREEMENTS

         The Fund may borrow money for temporary purposes by entering into
reverse repurchase agreements. Pursuant to such agreements, the Fund 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. The Fund
would enter into reverse repurchase agreements only to avoid otherwise selling
securities during unfavorable market conditions to meet redemptions. At the time
the Fund entered into a reverse repurchase agreement, it would place in a
segregated custodial account assets, such as cash or liquid securities
consistent with the Fund's investment restrictions and having a value equal to
the repurchase price (including accrued interest), and would subsequently
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 the Fund may decline below the price at which the Fund is obligated to
repurchase the securities. Reverse repurchase agreements are considered by the
SEC to be borrowings by the Fund under the 1940 Act.

RESTRICTED SECURITIES

         The Fund 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 Fund, 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
Fund 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 Fund
believes 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 Fund intends, 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 Fund believes 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, are met:

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

                                       25
<PAGE>   55

          -    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 the Fund 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 One  Group  Mutual  Funds,  unless  Banc One
               Investment  Advisors is able to dispose of illiquid  assets in an
               orderly  manner in an amount that reduces the Fund'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 that quarterly.

SECURITIES LENDING

         To generate additional income, the Fund may lend up to 33 1/3% of the
Fund's total assets pursuant to agreements requiring that the loan be
continuously secured by 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 cash, such securities, shares, or letters of credit as collateral
equal at all times to at least 100% of the market value plus accrued interest on
the securities lent. The Fund receives payment 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 Fund'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 Fund or the borrower at any time, and are
therefore, not considered to be illiquid investments.

SHORT-TERM FUNDING AGREEMENTS

         To enhance yield, the Fund 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 such
agreements, the Fund makes cash contributions to a deposit account at a bank or
insurance company. The bank or insurance company then credits to the Fund 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.

         The Fund 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 Fund to be
illiquid investments. To the extent that a short-term funding agreement is
determined to be illiquid, such agreements will be acquired by the Fund only if,
at the time of purchase, no more than 15% of the Fund's net assets will be
invested in short-term funding agreements and other illiquid securities.



                                       26
<PAGE>   56

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 such 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 payment.

         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 with
respect to publicly traded debt securities (i.e., the existence of a trust
indenture). In that respect, the risks of default associated with structured
instruments may be similar to those associated with swap contracts. See "Swaps,
Caps and Floors."

         The Fund will invest only in structured securities that are consistent
with the Fund'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, the Fund
will not invest in structured instruments if the terms of the structured
instrument provide that the Fund may be obligated to pay more than their initial
investment in the structured instrument, or to repay any interest or principal
that has already been collected or paid back.

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

SWAPS, CAPS AND FLOORS


         The Fund 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
Fund from interest rate fluctuations and to hedge against fluctuations in the
floating rate market in which the Fund's investments are traded. The Fund may
enter into these transactions to manage its exposure to changing interest rates
or other market factors or for non-hedging purposes. Some transactions may
reduce the Fund'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 Fund for similar purposes (i.e., risk
management and hedging) and therefore, expose the Fund 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 Fund may
exchange with another party their respective rights to receive interest, such as
an exchange of fixed rate payments for floating rate payments.


                                       27
<PAGE>   57

         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 the Fund, the Fund
may suffer a loss. To address this risk, the Fund will usually enter into
interest rate swaps on a net basis, which means that the two payment streams
(one from the Fund to the counterparty, one to the Fund from the counterparty)
are netted out, with the Fund 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 Fund is contractually obligated to make. If the other
party to an interest rate swap defaults, the Fund's risk of loss consists of the
net amount of interest payments that the Fund is contractually entitled to
receive. In addition, the Fund 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 Fund 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 the Fund to close out its obligations under the swap contract
prior to its maturity. Under such circumstances, the Fund might be able to
negotiate another swap contract with a different counterparty to offset the risk
associated with the first swap contract. Unless the Fund is able to negotiate
such an offsetting swap contract, however, the Fund could be subject to
continued adverse developments, even after Banc One Investment Advisors has
determined that it would be prudent to close out or offset the first swap
contract.

         The Fund 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 Fund 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 Fund 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 Fund.


         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 Fund 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 Fund intends 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 Fund and Banc One Investment
Advisors believes that swaps do not constitute senior securities under the




                                       28
<PAGE>   58

Investment Company Act of 1940 and, accordingly, will not treat them as being
subject to the Fund's borrowing restrictions. The net amount of the excess, if
any, of the Fund'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 Fund's
Custodian. The Fund generally will limit its investments in swaps, caps and
floors to 25% of its total assets.


TREASURY RECEIPTS

         The Fund 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 Fund may invest in bills, notes and bonds issued by the U.S.
Treasury and separately traded interest and principal component parts of such
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 Fund may also invest in
Inflation Indexed Treasury Obligations.

VARIABLE AND FLOATING RATE INSTRUMENTS

         Certain obligations purchased by the Fund 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 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 the Fund and the issuer, they are not normally
traded. Although there is no secondary market in the notes, the Fund 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 Advisers 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 Fund, subject to its 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 such adjustment, can reasonably be expected to
have a market value that approximates its par value. The Fund may purchase
Extendable Commercial Notes. Extendable commercial notes are variable rate notes
which normally mature within a short period of time (e.g., 1 month) but which
may be extended by the issuer for a maximum maturity of thirteen months.


         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. Floating rate instruments are frequently not rated
by credit rating agencies; however, unrated variable and floating rate
instruments purchased by the Fund 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 Fund's investment



                                       29
<PAGE>   59

policies.  In making such  determinations,  Banc One  Investment  Advisors  will
consider the earning power,  cash flow and other liquidity ratios of the issuers
of such instruments (such 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 the Fund.  The absence of such an active
secondary  market,  could  make it  difficult  for the  Fund 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 Fund 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.  The
Fund will  purchase  a  variable  or  floating  rate  instrument  to  facilitate
portfolio  liquidity or to permit investment of the Fund'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 resale or for which no readily available market
exists (including repurchase agreements providing for settlement more than seven
days after notice), exceeds or 15% of the Fund's net assets only if such
instruments are subject to a demand feature that will permit the Fund to demand
payment of the principal within seven days after demand by the Fund. There is no
limit on the extent to which the Fund may purchase demand instruments that are
not illiquid. If not rated, such 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 the rating symbols
of S&P, Moody's, and Fitch used in this paragraph, please see Appendix A.

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 that is 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 Fund may purchase securities on a "when-issued" and forward
commitment basis. When the Fund agrees to purchase securities on this basis, the
Fund's custodian will set aside cash or liquid portfolio securities equal to the
amount of the commitment in a separate account. The Fund 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 Fund generally will not pay for such 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 such a case, the Fund may be required subsequently to place
additional assets in the separate account in order to assure that the value of
the account remains equal to the amount of the Fund's commitment. The Fund's net
assets may fluctuate to a greater degree when it sets aside portfolio securities
to cover such purchase commitments than when it sets aside cash. In addition,
when the Fund engages in "when-issued" transactions, it relies on the seller to
consummate the trade. Failure of the seller to do so may result in the Fund's
incurring a loss or missing the opportunity to obtain a price considered to be
advantageous.

         In a forward commitment transaction, the Fund contracts to purchase
securities for a fixed price at a future date beyond customary settlement time.
The Fund is 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 Fund 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. The Fund does not intend to purchase "when-issued" securities for
speculative purposes but only for the purpose of acquiring portfolio securities.
Because the Fund will set aside cash or liquid portfolio securities to satisfy
its purchase commitments in the manner described, the Fund's liquidity and





                                       30
<PAGE>   60

the ability of Banc One Investment Advisors to manage the Fund might, as
described in the Prospectuses, 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 the Fund's total assets, and a commitment will not
exceed 90 days. The Fund may dispose of a when-issued security or forward
commitment prior to settlement if Banc One Investment Advisors deems it
appropriate to do so.

INVESTMENT RESTRICTIONS

             The following investment restrictions are FUNDAMENTAL and may be
changed with respect to a particular Fund only by a vote of a majority of the
outstanding Shares of that Fund. See "ADDITIONAL INFORMATION--Miscellaneous" in
this Statement of Additional Information.

             The Fund may not:

             1. Purchase securities of any issuer (except securities issued or
guaranteed by the United States, its agencies or instrumentalities, and, if
consistent with the Fund's investment objective and policies, repurchase
agreements involving such securities) if as a result more than 5% of the total
assets of the Fund would be invested in the securities of such issuer or the
Fund would own more than 10% of the outstanding voting securities of such
issuer. This restriction applies to 75% of the Fund's assets. For purposes of
these limitations, 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 non-governmental user, such user would be considered the
issuer.


             2. Purchase any securities that would cause more than 25% of the
total assets of the Fund 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: (i) mortgage-backed
securities; or (ii) 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) utilities 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 the Fund 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 as described
in the Prospectus and in this 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 the Fund 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 (including
futures contracts), except that for bona fide hedging and other permissible
purposes, the Fund may purchase or sell financial futures contracts and may
purchase call or put options on financial futures contracts.

             7. Purchase participation or other direct interests in oil, gas or
mineral exploration or development programs (although investments by the Fund 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 1940 Act and rules, regulations and applicable exemptive relief
thereunder.




                                       31
<PAGE>   61

             10. Purchase or sell real estate (however, the Fund 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 the Fund
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 lesser of
the dollar amounts borrowed or 10% of the value of the Fund's total assets at
the time of its borrowing. The Fund will not purchase securities while its
borrowings (including reverse repurchase agreements) in excess of 5% of its
total assets are outstanding.



             The following investment restrictions are NON-FUNDAMENTAL except as
noted otherwise and therefore can be changed by the Board of Trustees without
prior shareholder approval.

             The Fund may not:

             1. Invest in illiquid securities in an amount exceeding, in the
aggregate 15% of the Fund'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.

             2. Acquire the securities of registered open-end investment
companies or registered unit investment trusts in reliance on Section
12(d)(1)(F) or 12(d)(1)(G) of the 1940 Act.

             The foregoing percentages apply at the time of purchase of a
security. Banc One Investment Advisors shall report to the Board of Trustees
promptly if any of the Fund's investments are no longer determined to be liquid
or if the market value of Fund assets has changed if such determination or
change causes the Fund 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 Fund's holdings of illiquid assets to less than 15%of its net
assets.

TEMPORARY DEFENSIVE POSITIONS.

             To respond to unusual market conditions, the Fund may invest its
assets in cash or 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 Fund from meeting its investment objectives.
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, money market mutual funds and
bank money market deposit accounts.

PORTFOLIO TURNOVER

             The portfolio turnover rate for the Fund will be 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.

         Higher portfolio turnover rates will likely result in higher
transaction costs to the Fund and may result in additional tax consequences to
Shareholders. To the extent portfolio turnover results in short-term capital
gains, such gains will generally be taxed at ordinary income tax rates.
Portfolio turnover may vary greatly from year to year as well as within a
particular year, and may also be affected by cash requirements for redemptions
of Shares. Portfolio turnover will not be a limiting factor in making portfolio
decisions.



                                       32
<PAGE>   62

                 ADDITIONAL TAX INFORMATION CONCERNING THE FUND

         The Fund is treated as a separate entity for federal income tax
purposes and is not combined with One Group's other Funds. The Fund intends 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"). If the Fund so qualifies, it will pay no federal income tax on the
earnings it distributes to shareholders and it will 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, the Fund must,
among other things, (1) derive at least 90% of its gross income from dividends,
interest, certain payments with respect to securities loans, gains from the sale
or other disposition of stock or securities, or foreign currencies (to the
extent such currency gains are directly related to the Fund's principal business
of investing in stock or securities, or options or futures with respect to stock
or securities) 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
Fund's assets is represented by cash or cash items (including receivables), U.S.
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 Fund's assets and 10% of the outstanding voting
securities of such issuer, and (ii) not more than 25% of the value of its assets
is invested in the securities of any one issuer (other than U.S. government
securities or the securities of other regulated investment companies) or of two
or more issuers that the Fund controls and that are engaged in the same,
similar, or related trades or businesses. These requirements may limit the range
of the Fund's investments. If the Fund 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 Fund distributes during its taxable
year at least 90% of the sum of (a) its taxable net investment income (very
generally, dividends, interest, certain other income, and the excess, if any, of
net short-term capital gain over net long-term loss), and (b) its net tax-exempt
interest. The Fund intends to make sufficient distributions to Shareholders to
qualify for this special tax treatment.


         If the Fund fails to qualify as a regulated investment company
receiving special tax treatment in any taxable year, the Fund would be subject
to tax on its taxable income at corporate rates, and all distributions from
earnings and profits, including any distributions of net tax-exempt income and
net long-term capital gains, would be taxable to Shareholders as ordinary
income. In addition, in order to requalify for taxation as a regulated
investment company, the Fund could be required to recognize unrealized gains,
pay substantial taxes and interest and make certain distributions.


         Generally, regulated investment companies that do not distribute in
each calendar year an amount at least equal to the sum of (i) 98% of their
"ordinary income" (as defined) for the calendar year, (ii) 98% of their capital
gain net income (as defined) for the one-year period ending on October 31st of
such calendar year, and (iii) any undistributed amounts from the previous year,
are subject to a non-deductible excise tax equal to 4% of the undistributed
amounts. For purposes of the excise tax, the Fund is treated as having
distributed any amount on which it is subject to income tax for any taxable year
ending in such calendar year. The Fund intends to make sufficient distributions
to avoid liability for the excise tax.

         Shareholders of the Fund will generally be subject to federal income
tax on distributions received from the Fund. Dividends that are attributable to
the Fund's net investment income will be taxed to shareholders as ordinary
income. Distributions of net capital gain (i.e., the excess, if any, of net
long-term capital gains over net short-term capital losses) that are designated
by the Fund as capital gain dividends will generally be taxable to a Shareholder
receiving such distributions as long-term capital gain (generally taxed at a 20%
tax rate for non-corporate Shareholders) regardless of how long the Shareholder
has held its shares. Distributions in excess of the Fund's current and
accumulated "earnings and profits" will be treated by a Shareholder receiving
such distributions as a return of capital to the extent of such Shareholder's
basis in its Shares in the Fund, and thereafter as capital gain. A return of
capital is not taxable, but reduces a Shareholder's basis in its shares.
Shareholders not subject to tax on their income generally will not be required
to pay tax on amounts distributed to them. Dividends and distributions on the
Fund's shares are generally subject to federal income tax as described herein to
the extent they do not exceed the Fund's realized income and gains, even though
such dividends and distributions may economically represent a return of a
particular shareholder's investment. Such distributions are likely to occur in
respect of shares purchased at a time when the Fund's net asset value reflects
gains that are either unrealized, or realized but not distributed.




                                       33
<PAGE>   63

         The sale, exchange or redemption of Fund shares by a Shareholder may
give rise to a taxable gain or loss to that Shareholder. In general, any gain or
loss realized upon a taxable disposition of shares will be treated as long-term
capital gain or loss if the Shareholder has held the shares for more than 12
months (generally taxed at a 20% tax rate for non-corporate shareholders), and
otherwise as short-term capital gain or loss. However, if a Shareholder sells
shares at a loss within six months of purchase, any loss will be disallowed for
Federal income tax purposes to the extent of any exempt-interest dividends
received on such shares In addition, any loss (not already disallowed as
provided in the preceding sentence) realized upon a taxable disposition of
shares held for six months or less will be treated as long-term to the extent of
any long-term capital gain distributions received by the Shareholder with
respect to the shares. All or a portion of any loss realized upon a taxable
disposition of Fund shares will be disallowed if other Fund shares are purchased
within 30 days before or after the disposition. In such a case, the basis of the
newly purchased shares will be adjusted to reflect the disallowed loss.

         Certain investment and hedging activities of the Fund, including
transactions in options, futures contracts, hedging transactions, forward
contracts, straddles, swaps, short sales, foreign currencies, and foreign
securities will be subject to special tax rules (including mark-to-market,
constructive sale, straddle, wash sale and short sale rules). In a given case,
these rules may accelerate income to the Fund, defer losses to the Fund, cause
adjustments in the holding periods of the Fund's securities, convert long-term
capital gains into short-term capital gains, convert short-term capital losses
into long-term capital losses, or otherwise affect the character of the Fund's
income. These rules could therefore affect the amount, timing and character of
distributions to Shareholders and cause differences between the Fund's book
income and taxable income. Income earned as a result of these transactions
would, in general, not be eligible for the dividends-received deduction or for
treatment as exempt-interest dividends when distributed to Shareholders. The
Fund will endeavor to make any available elections pertaining to such
transactions in a manner believed to be in the best interest of the Fund.

         Certain securities purchased by the Fund (such as STRIPS, CUBES, TRS,
TIGRS, and CATS) are sold at original issue discount and thus do not make
periodic cash interest payments. Similarly, zero-coupon bonds do not make
periodic interest payments. The Fund will be required to include as part of its
current income for tax purposes the imputed interest on such obligations even
though the Fund has not received any interest payments on such obligations
during that period. Because the Fund distributes substantially all of its net
investment income to its Shareholders (including such imputed interest), the
Fund may have to sell portfolio securities in order to generate the cash
necessary for the required distributions. Such sales may occur at a time when
Banc One Investment Advisors would not otherwise have chosen to sell such
securities and may result in a taxable gain or loss.

         The Fund will be required in certain cases to withhold and remit to the
United States Treasury 31% of taxable dividends or of gross proceeds from
redemptions paid to any individual Shareholder who has provided to the Fund
either an incorrect tax identification number or no number at all, or who is
subject to withholding by the Internal Revenue Service for failure to report
properly payments of interest or dividends. This withholding, known as backup
withholding, is not an additional tax, and any amounts withheld may be credited
against the Shareholder's ultimate U.S. tax liability.

         The Internal Revenue Service recently revised its regulations affecting
the application to foreign investors of the back-up withholding and withholding
tax rules described above. The new regulations will generally be effective for
payments made after December 31, 2000. In some circumstances, the new rules will
increase the certification and filing requirements imposed on foreign investors
in order to qualify for exemption from the 31% back-up withholding tax and for
reduced withholding tax rates under income tax treaties. Foreign investors in
the Fund should consult their tax advisors with respect to the potential
application of these new regulations.

         The foregoing is only a summary of some of the important federal tax
considerations generally affecting purchasers of Shares of the Fund. No attempt
is made to present herein a complete explanation of the federal income tax
treatment of each Fund or its Shareholders, and this discussion is not intended
as a substitute for careful tax planning. Accordingly, prospective purchasers of
Shares of the Fund are urged to consult their tax advisors with specific
reference to their own tax situation, including the potential application of
state, local and (if applicable) foreign taxes.

         The foregoing discussion is based on tax laws and regulations which are
in effect on the date of this Statement of Additional Information; such laws and
regulations may be changed by legislative, judicial or administrative action,
and such changes may be retroactive.




                                       34
<PAGE>   64

                                    VALUATION

VALUATION OF THE FUND

         Except as noted below, investments of the Fund in securities the
principal market for which is a securities exchange are valued at their market
values based upon the latest available sales price or, absent such a price, by
reference to the latest available bid and asked prices in the principal market
in which such securities are normally traded.

         Securities the principal market for which is not a securities exchange
are valued at the mean of their latest bid and ask quotations in such principal
market. Securities and other assets for which quotations either (1) are not
readily available; or (2) are determined by Banc One Investment Advisors to not
accurately reflect their value, are valued at their fair value as determined in
good faith under consistently applied procedures established by and under the
general supervision of the Trustees of the Trust. Short-term securities are
valued at either amortized cost or original cost plus accrued interest, which
approximates current value.

         The value of a foreign security is determined in its national currency
as of the close of trading on its principal market, which value is then
converted into its U.S. dollar equivalent using the mean of the latest foreign
exchange bid and ask price at the time of the close of the London Stock
Exchange. When an occurrence subsequent to the time a value of a foreign
security was so established is likely to have changed the value, then the fair
value of those securities will be determined by consideration of other factors
by or under the direction of the Trustees of the Trust or their delegates.

         Securities for which market quotations are readily available will be
valued on the basis of quotations provided by dealers in such securities or
furnished by a pricing service approved by the Board. Securities for which
market quotations are not readily available and other assets will be valued at
fair value using methods approved by the Board.

ADDITIONAL INFORMATION REGARDING THE CALCULATION OF PER SHARE NET ASSET VALUE

         The net asset value of the Fund is determined and its Class I and Class
A Shares are priced as of the times specified in the Prospectus. The net asset
value per share of the Fund's Class I and Class A Shares is calculated by
determining the value of the respective Class's proportional interest in the
securities and other assets of the Fund, less (i) such Class's proportional
share of general liabilities and (ii) the liabilities allocable only to such
Class, and dividing such amount by the number of Shares of the Class
outstanding. The net asset value of the Fund's Class I and Class A Shares may
differ from each other due to the expense of the Distribution and Shareholders
Services Plan fee applicable to the Fund's Class A Shares.

SECURITY VALUATION SPECIFICS

-        Securities for which the primary market is an exchange shall be valued
         at the last available quoted sale price on said exchange for the
         current day. In lieu of current trade activity, the security shall be
         valued at the last available quoted sale.

-        Securities, which are traded in the over-the-counter market, shall be
         valued at the last available quoted sale price for the current day. In
         lieu of current trade activity, the security will be valued at the mean
         of the latest quoted bid and ask prices.

-        Options, Futures Contracts, and Options on Futures shall be valued at
         the last available sale on the exchange on which they are primarily
         traded. In lieu of a current day last available sale, the valuation
         shall be the mean of the latest bid and ask prices.

-        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.



                                       35
<PAGE>   65

-         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 PURCHASE AND REDEMPTION INFORMATION

         All of the classes of Shares in the Fund are sold on a continuous basis
by The One Group Services Company (the "Distributor"), and the Distributor has
agreed to use appropriate efforts to solicit all purchase orders.

         Class I Shares in the Fund may be purchased, through procedures
established by the Distributor, by institutional investors, including affiliates
of Bank One Corporation and any organization authorized to act in a fiduciary,
advisory, custodial or agency capacities. Class I Shares are not available to
Individual Retirement Accounts.

         Class A Shares may be purchased by any investor that does not meet the
purchase eligibility criteria, described above, with respect to Class I Shares.
In addition to purchasing Class A Shares directly from the Distributor, an
investor may purchase Class A Shares through a financial institution, such as a
bank, savings and loan association, insurance company (each a "Shareholder
Servicing Agent") that has established a Shareholder servicing agreement with
the Distributor, or through a broker-dealer that has established a dealer
agreement with the Distributor. Questions concerning the eligibility
requirements for each class of the Trust's Shares may be directed to the
Distributor at 1-800-480-4111.

EXCHANGES

         The exchange privileges described herein may be exercised only in those
states where the Shares of the Fund or such other Fund may be legally sold. All
exchanges discussed herein are made at the net asset value of the exchanged
Shares, except as provided below. The Trust does not impose a charge for
processing exchanges of Shares. For Federal income tax purposes, an exchange is
treated as a sale of shares and generally results in a capital gain or loss.

         Class I. Class I Shareholders of the Fund may exchange their Shares for
Class A Shares of the Fund or for Class A Shares or Class I Shares of another
Fund of the Trust.

         Class A Shares. Class A Shareholders may exchange their Shares for
Class I Shares of the Fund or for Class I or Class A Shares of another Fund or
the Trust, if the Shareholder is eligible to purchase such Shares. If a
Shareholder seeks to exchange Class A Shares of a Fund that does not impose a
sales charge for Class A Shares of a Fund that does, or the Fund being exchanged
into has a higher sales charge, the Shareholder will be required to pay a sales
charge in the amount equal to the difference between the sales charge applicable
to the Fund into which the Shares are being exchanged and any sales charge
previously paid for the exchanged Shares, including any sales charges incurred
on any earlier exchanges of the Shares (unless such sales charge is otherwise
waived as provided above). The exchange of Class I Shares for Class A Shares
also will require payment of the sales charge unless the sales charge is waived,
as provided above. If a Shareholder (no longer eligible to purchase Class I
Shares) purchases Class A Shares of the Fund, the Shareholder will be subject to
Distribution and Shareholder Services Plan Fees.


REDEMPTIONS

         The Trust may suspend the right of redemption or postpone the date of
payment for Shares during any period when:



                                       36
<PAGE>   66

         (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 SEC has by order permitted such suspension, or

         (d)      an emergency exists as determined by the SEC.

                             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 the Fund's investment
objectives and policies, but delegate the day-to-day administration of the Fund
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>   67
<TABLE>
<CAPTION>




                                                        POSITION HELD          PRINCIPAL OCCUPATION
NAME AND ADDRESS                       AGE             WITH THE TRUST          DURING THE PAST FIVE YEARS
----------------                       ---             --------------          --------------------------

<S>                                     <C>               <C>                  <C>
Peter C. Marshall                       57                Trustee              From March, 2000 to present,
DCI Marketing, Inc.                                                            Senior Vice President, W.D. Howard,
2727 W. Good Hope Road                                                         Inc. (Corporate parent of DCI
Milwaukee, WI 53209                                                            Marketing, Inc.). From November, 1993
                                                                               to March, 2000,  President,  DCI
                                                                               Marketing, Inc.

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


Frederick W. Ruebeck                    60                Trustee              From April, 2000 to present,
10954 Windjammer North                                                         advisor, Jerome P. Greene & Associates,
Indianapolis, IN  46256                                                        LLP.  From January, 2000 to
                                                                               April, 2000, self-employed as a
                                                                               consultant.  From June, 1988 to
                                                                               present, Director of Investments, Eli
                                                                               Lilly and Company.

Robert A. Oden, Jr.                     53                Trustee              From 1995 to present, President,
Office of the President                                                        Kenyon College; from 1989 to 1995,
Ransom Hall                                                                    Headmaster, The Hotchkiss School.
Kenyon College
Gambier, OH 43022

*John F. Finn                           52                Trustee              Since 1975, President of Gardner,
President                                                                      Inc. (wholesale distributor to the
Gardner, Inc.                                                                  outdoor power equipment industry).
1150 Chesapeake Avenue
Columbus, OH 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 Funds since
633 Clark St. Crown 2-112                                                      1996.
Evanston, IL 60208
</TABLE>



                                       38
<PAGE>   68


<TABLE>
<CAPTION>
                                                        POSITION HELD          PRINCIPAL OCCUPATION
NAME AND ADDRESS                       AGE             WITH THE TRUST          DURING THE PAST FIVE YEARS
----------------                       ---             --------------          --------------------------

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

Donald L. Tuttle                        65                Trustee              Vice President (1995 to present)
Association of 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 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 Trust receive fees and expenses for each meeting of
the Board of Trustees attended. No officer or employee of the Distributor
currently acts as a Trustee of the Trust.

         The Compensation Table below sets forth the total compensation to the
Trustees from the Trust for the Trust's fiscal year ended June 30, 1999.
<TABLE>
<CAPTION>

                              COMPENSATION TABLE(1)

                                                                    PENSION OR          ESTIMATED           TOTAL
                                             AGGREGATE          RETIREMENT BENEFITS      ANNUAL         COMPENSATION
NAME OF PERSON,                            COMPENSATION         ACCRUED AS PART OF    BENEFITS UPON     FROM THE FUND
POSITION                                  FROM THE TRUST         TRUST EXPENSES(2)     RETIREMENT        COMPLEX(3)
--------                                  --------------         -----------------     ----------        ----------

<S>                                         <C>                        <C>                 <C>            <C>
Peter C. Marshall, ............             $49,750                     N/A                N/A            $  52,750
     Chairman
Charles I. Post, ..............             $45,500                     N/A                N/A            $  48,500
     Trustee
Frederick W. Ruebeck, .........             $46,750(4)                  N/A                N/A            $  49,750
     Trustee
Robert A. Oden, Jr., ..........             $46,750                     N/A                N/A            $  49,750
     Trustee
John F. Finn, .................             $46,750(4)                  N/A                N/A            $  49,750
     Trustee
Marilyn McCoy .................             $11,250(5)                  N/A                N/A            $  12,000
     Trustee
Julius L. Pallone .............             $11,250(5)                  N/A                N/A            $  12,000
     Trustee
Donald L. Tuttle ..............             $11,250(6)                  N/A                N/A            $  12,000
     Trustee
</TABLE>


(1)      Figures are for the Trust's fiscal year ended June 30, 1999.


(2)       The Trustees may defer all or a part of their compensation payable by
          the Trust pursuant to the Deferred Compensation Plan (the "Plan").
          Under the Plan, the Trustees may specify Class I Shares of one or more
          Funds of the Trust that will be used to measure the performance of a
          Trustee's deferred compensation account. A Trustee's deferred
          compensation





                                       39
<PAGE>   69

         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)       "Fund Complex" comprises the funds of One Group Mutual Funds and the
          portfolios of One Group(R) InvestmenT Trust that were operational as
          of June 30, 1999.

(4)      Includes $35,000 of deferred compensation.

(5)      Includes $11,250 of deferred compensation.

(6)      Includes $5,625 of deferred compensation.

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

                                                  POSITION(S) HELD                 PRINCIPAL OCCUPATION
NAME AND ADDRESS                    AGE            WITH THE TRUST                  DURING PAST 5 YEARS
----------------                    ---            --------------                  -------------------

<S>                                  <C>       <C>                                 <C>
Mark S. Redman                       46        President, Treasurer                From November, 1997 to
The One Group Services                         and Assistant Secretary             present, President, The One
Company                                                                            Group Services Company;
3435 Stelzer Road                                                                  From June, 1995 to
Columbus, Ohio 43219                                                               November, 1997, Officer,
                                                                                   The One Group Services
                                                                                   Company; From February,
                                                                                   1989 to present, employee
                                                                                   of BISYS Fund Services,
                                                                                   Inc. (FKA Winsbury Company)

James T. Gillespie                   33        Vice President                      From September, 1998 to
BISYS Fund Services,                                                               present, employee, The One
Inc.                                                                               Group Services Company;
3435 Stelzer Road                                                                  From February, 1992 to
Columbus, Ohio 43219                                                               September, 1998, employee,
                                                                                   BISYS Fund Services, Inc.

Bryan C. Haft                        35        Vice President                      From January, 1999 to
BISYS Fund Services,                                                               present, employee, The One
Inc.                                                                               Group Services Company;
3435 Stelzer Road                                                                  From November, 1992 to
Columbus, Ohio 43219                                                               January, 1999, employee,
                                                                                   BISYS Fund Services, Inc.

Charles L. Booth                     40        Secretary                           From February, 1998, to
BISYS Fund Services,                                                               present, Chief Compliance
Inc.                                                                               Officer and Vice President
3435 Stelzer Road                                                                  Fund Compliance
Columbus, Ohio 43219                                                               BISYS Fund Services, Inc.;
                                                                                   From April, 1988, to February, 1998,
                                                                                   employee, BISYS Fund Services, Inc.


</TABLE>





                                       40
<PAGE>   70



<TABLE>
<CAPTION>
<S>                                  <C>       <C>                                 <C>
Alaina J. Metz                       33        Assistant Secretary                 From June, 1995, to
BISYS Fund Services,                                                               present, Chief
Inc.                                                                               Administrator,
3435 Stelzer Road                                                                  Administration and
Columbus, Ohio 43219                                                               Regulatory Services,
                                                                                   BISYS Fund Services, Inc.; from
                                                                                   May 1989 to June 1995, Supervisor,
                                                                                   Mutual Fund Legal
                                                                                   Department, Alliance
                                                                                   Capital Management.

</TABLE>

INVESTMENT ADVISOR

                    BANC ONE INVESTMENT ADVISORS CORPORATION


         Investment advisory services to the Fund are provided by Banc One
Investment Advisors. Banc One Investment Advisors makes the investment decisions
for the assets of the Fund. In addition, Banc One Investment Advisors
continuously reviews, supervises and administers the Fund' s investment program,
subject to the supervision of, and policies established by, the Trustees of the
Trust. The Trust's 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.


         Banc One Investment Advisors is an indirect, wholly-owned subsidiary of
Bank One Corporation, a bank holding company incorporated in the state of
Delaware. Bank One Corporation has affiliate banking organizations in Arizona,
Colorado, Delaware, 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
(formerly, One Group, The One Group and the Helmsman Fund) since 1985.



         All investment advisory services are provided to the Fund by Banc One
Investment Advisors pursuant to an investment advisory agreement dated January
11, 1993 (the "Investment Advisory Agreement"). The Investment Advisory
Agreement will continue in effect as to the Fund from year to year, 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 the Fund (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 was approved by the Trust's Board of Trustees
with respect to the Fund at their quarterly meeting on May 18, 2000. The
Advisory Agreement may be terminated as to the Fund at any time on 60 days'
written notice without penalty by the Trustees, by vote of a majority of the
outstanding Shares of the Fund, or by the Fund's Advisor. The Advisory Agreement
also terminates automatically in the event of any assignment, as defined in the
1940 Act.


         The Advisory Agreement provide that the Advisor 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 respective investment advisory
agreements, 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





                                       41
<PAGE>   71

misfeasance, bad faith, or gross negligence on the part of Banc One Investment
Advisors in the performance of its duties, or from reckless disregard by it of
its duties and obligations thereunder.

         For its services, Banc One Investment Advisors is entitled to a fee
equal to .35% of the average daily net assets of the Fund. Banc One Investment
Advisors and The One Group Services Company have agreed to waive fees and/or
reimburse expenses to limit total annual fund operating expenses to .65% for
Class A Shares and .40% for Class I Shares.

CODE OF ETHICS


         The Trust, Banc One Investment Advisors, and The One Group Services
Company 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 the Fund.
The Trust's code of ethics prohibits any access person from: (i) employing any
device, scheme or artifice to defraud the Trust or the Fund; (ii) making to the
Trust any untrue statement of a material fact or omit to state to the Trust or
the Fund 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 the Fund; or (iv) engaging in any
manipulative practice with respect to the Trust or the Fund. 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 the Fund 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
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 the Fund 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).

         The One Group Services Company is subject to BISYS Fund Services Code
of Ethics (the "Principal Underwriter's Code of Ethics"). Under the Principal
Underwriter's Code of Ethics, directors, officers, and associates of The One
Group Services Company must: (i) place the interest of Fund shareholders first;
(ii) conduct all personal securities transactions in a manner that is consistent
with the Principal Underwriter's Code of Ethics to avoid any actual or potential
conflict of interest; and (iii) refrain from taking inappropriate advantage of
their position. The Principal Underwriter's Code of Ethics permits personnel
subject to the code to invest in securities including securities that may be
purchased or held by the Fund subject to the policies and restrictions in the
Principal Underwriter's Code of Ethics.


 PORTFOLIO TRANSACTIONS

         Pursuant to the Advisory Agreement, Banc One Investment Advisors
determines, subject to the general supervision of the Board of Trustees of the
Trust and in accordance with the Fund's investment objective and restrictions,
which securities are to be purchased and sold by the Fund and which brokers are
to be eligible to execute its portfolio transactions. Purchases and sales of
portfolio securities with respect to the Fund 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 generally 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 Trust, 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 Trust may not necessarily pay the lowest spread or commission available on
each transaction, for reasons discussed below.




                                       42
<PAGE>   72

         Allocation of transactions, including their frequency, to various
dealers is determined by Banc One Investment Advisors with respect to the Fund
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 Trust, even if such dealers
charge commissions in excess of the lowest rates available, provided such
commissions are reasonable in light of the value of brokerage and research
services received. Such research services may include, but are not be limited
to, analysis and reports concerning economic factors and trends, industries,
specific securities, and portfolio strategies. 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 Trust 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 Trust. In the last fiscal year, Banc One Investment Advisors directed
brokerage commissions to brokers who provided research services to Banc One
Investment Advisors.

         The Trust will not execute portfolio transactions through, acquire
portfolio securities issued by, make savings deposits in, or enter into
repurchase or reverse repurchase agreements with its investment advisors or
their affiliates except as may be permitted under the 1940 Act, 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 Fund of the Trust are made independently
from those for the other Funds 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 Trust. When a purchase or
sale of the same security is made at substantially the same time on behalf of a
given Fund and another Fund, 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 of the given Fund believes to be
equitable to the Fund(s) and such other investment company or account. In some
instances, this investment procedure may adversely affect the price paid or
received by a Fund or the size of the position obtained by a Fund. To the extent
permitted by law, Banc One Investment Advisors may aggregate the securities to
be sold or purchased by it for a Fund with those to be sold or purchased by it
for other Funds or for other investment companies or accounts in order to obtain
best execution. As provided by the Investment Advisory, in making investment
recommendations for the Trust, Banc One Investment Advisors will not inquire or
take into consideration whether an issuer of securities proposed for purchase or
sale by the Trust is a customer of Banc One Investment Advisors or their parents
or subsidiaries or affiliates and, in dealing with its commercial customers,
Banc One Investment Advisors and their respective parent, subsidiaries, and
affiliates will not inquire or take into consideration whether securities of
such customers are held by the Trust.

ADMINISTRATOR AND SUB-ADMINISTRATOR

         The One Group Services Company serves as Administrator (the
"Administrator") to the Fund pursuant to a Management and Administration
Agreement with the Trust (the "Administration Agreement"). The Board of Trustees
of the Trust approved The One Group Services Company as the sole Administrator
for each Fund of the Trust beginning December 1, 1995 and approved the
Management and Administration Agreement with respect to the Fund on May 18,
2000. The Administrator assists in supervising all operations of the Fund (other
than those performed under the respective investment advisory agreement and
Custodian and Transfer Agency Agreement for the Fund).

         Under the Administration Agreement, the Administrator has agreed to
price the portfolio securities of the Fund and to compute the net asset value
and net income of the Fund on a daily basis, to maintain office facilities for
the Trust, to maintain the Fund's financial accounts and records, and to furnish
the Trust statistical and research data, data processing, clerical, accounting,
and bookkeeping services, and certain other services required by the Trust with
respect to the Fund. The Administrator prepares annual and semi-annual reports
to the SEC, prepares federal and State tax returns, prepares filings with State
securities commissions, and generally assists in all aspects of the Trust's
operations other than those performed under the investment advisory agreements,
and Custodian and Transfer Agency Agreements. Under the Administration
Agreement, the Administrator may delegate all or any part of its
responsibilities thereunder.




                                       43
<PAGE>   73


         Unless sooner terminated, the Administration Agreement between the
Trust and The One Group Services Company will continue in effect through
November 30, 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 will be
reviewed and ratified at least annually by the Trust's Board of Trustees,
provided that the Administration Agreement is also reviewed and ratified by the
majority of the Trust's Trustees who are not parties to the Administration
Agreement or interested persons (as defined in the 1940 Act) of any party to the
Administration Agreement, by vote cast in person at a meeting called for the
purpose of reviewing and ratifying the Administration Agreement. The
Administration Agreement may be terminated with respect to the Fund 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 Trust's Board of Trustees or by The One
Group Services Company.

         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 Trust in connection with the matters to which the Administration Agreement
relates, except a loss resulting from willful misfeasance, bad faith, or
negligence in the performance of its duties, or from the reckless disregard by
it of its obligations and duties thereunder.

             One Group Administrative Services, Inc. serves as sub-administrator
for the Trust pursuant to a Sub-Administration Agreement between The One Group
Services Company and One Group Administrative Services, Inc. One Group
Administrative Services, Inc. is an affiliate of Banc One Investment Advisors
and an indirect wholly-owned subsidiary of Bank One Corporation.

DISTRIBUTOR

         The One Group Services Company, 3435 Stelzer Road, Columbus, Ohio
43219, a wholly owned subsidiary of the BISYS Group, serves as Distributor to
the Fund pursuant to its Distribution Agreement with the Trust (the
"DISTRIBUTION AGREEMENT"). The Board of Trustees of the Trust approved The One
Group Services Company as the sole Distributor beginning November 1, 1995.
Unless otherwise terminated, the Distribution Agreement will continue in effect
until October 31, 2000 and will continue from year to year if approved at least
annually (i) by the Trust's Board of Trustees or by the vote of a majority of
the outstanding Shares of the Funds (see "ADDITIONAL
INFORMATION--Miscellaneous," in this Statement of Additional Information) that
are parties to the Distribution Agreement, and (ii) by the vote of a majority of
the Trustees of the Trust who are not parties to the Distribution Agreement or
interested persons of any such party, cast in person at a meeting called for the
purpose of voting on such approval. The agreement may be terminated in the event
of its assignment, as defined in the 1940 Act. The One Group Services Company is
a broker-dealer registered with the Securities and Exchange Commission, and is a
member of the National Association of Securities Dealers, Inc.

DISTRIBUTION PLAN

         The operation and fees payable under the Trust's Distribution and
Shareholder Services Plans, with respect to Class A Shares of the Fund are
described in the Fund's Prospectus and in the Multiple Class Plan.

         The Distribution and Shareholder Services Plan with respect to Class A
Shares (the "Distribution Plan") was initially approved on July 28, 1989 by the
Trust's Board of Trustees, including a majority of the Trustees who are not
interested persons of the Trust (as defined in the 1940 Act) and who have no
direct or indirect financial interest in the Distribution Plan (the "INDEPENDENT
TRUSTEES"). The Distribution Plan originally applied to the single class of
Shares of each Fund of the Trust that existed prior to the offering of the
Funds' Shares as five separate classes. An amendment to the Distribution Plan
was approved by the Independent Trustees on October 21, 1991, and became
effective on February 7, 1992. Such amendment limited fees under the
Distribution Plan only to the Class A Shares of each Fund. The Distribution Plan
was amended again on February 11, 1993 in order to make Retirement Class Shares
(now the Service Class Shares) subject to distribution fees. The Distribution
Plan was further amended on February 29, 1996, to eliminate certain "defensive"
provisions of the Distribution Plan. Prior to February 7, 1992, distribution
fees were waived with respect to every Fund of the Trust except the U.S.
Treasury Securities Money Market Fund and the Prime Money Market Fund.


         In accordance with Rule 12b-1 under the 1940 Act, the Distribution Plan
may be terminated with respect to the Class A Shares of the Fund by a vote of a
majority of the Independent Trustees, or by a vote of a majority of the
outstanding Class A




                                       44
<PAGE>   74

Shares of the Fund. The Distribution Plan may be amended by vote of the Trust's
Board of Trustees, including a majority of the Independent Trustees, cast in
person at a meeting called for such purpose, except that any change in the
Distribution Plan that would materially increase the distribution fee with
respect to the Class A Shares of the Fund requires the approval of the Fund's
Class A Shareholders. The Trust's Board of Trustees will review on a quarterly
and annual basis written reports of the amounts received and expended under the
Distribution Plan (including amounts expended by the Distributor to
Participating Organizations pursuant to the Servicing Agreements entered into
under the Distribution Plan) indicating the purposes for which such expenditures
were made.


CASH COMPENSATION TO SHAREHOLDER SERVICING AGENTS


         The One Group Services Company and Banc One Investment Advisors
         Corporation compensate Shareholder Servicing Agents who sell shares of
         the Funds. Compensation comes from sales charges, 12b-1 fees and
         payments by The One Group Services Company and Banc One Investment
         Advisors Corporation from their own resources. The One Group Services
         Company may, on occasion, pay select Shareholder Servicing Agents, the
         entire front-end sales charge applicable to Fund shares sold by such
         Shareholder Servicing Agents.

                  Occasionally, The One Group Services Company and Banc One
         Investment Advisors Corporation, at their own expense, will provide
         cash incentives to select Shareholder Servicing Agents. These cash
         payments may take of the form of, but are not limited to, finders' fees
         and an additional commission on the sale of Fund shares subject to a
         contingent deferred sales charge.


CUSTODIAN, TRANSFER AGENT, AND DIVIDEND DISBURSING AGENT

         Cash and securities owned by the Fund are held by State Street Bank and
Trust Company, P.O. Box 8528, Boston, Massachusetts 02266-8528, ("State Street")
as Custodian. State Street serves the Fund as Custodian pursuant to 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 the
                  Fund;

         (ii)     makes receipts and disbursements of money on behalf of the
                  Fund;

         (iii)    collects and receives all income and other payments and
                  distributions on account of the Fund's portfolio securities;

         (iv)     responds to correspondence from security brokers and others
                  relating to its duties; and

         (v)      makes periodic reports to the Trust's Board of Trustees
                  concerning the Trust's 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.

         Rules adopted under the 1940 Act permit the Trust to maintain its
securities and cash in the custody of certain eligible banks and securities
depositories.

         State Street serves as Transfer Agent and Dividend Disbursing Agent for
the Fund pursuant to Transfer Agency Agreements with the Trust (the "Transfer
Agency Agreement"). Under the Transfer Agency Agreements, State Street has
agreed

         (i)      to issue and redeem Shares of the Trust;

         (ii)     to address and mail all communications by the Trust to its
                  Shareholders, including reports to Shareholders, dividend and
                  distribution notices, and proxy material for its meetings of
                  Shareholders;

         (iii)    to respond to correspondence or inquiries by Shareholders and
                  others relating to its duties;





                                       45
<PAGE>   75

         (iv)     to maintain Shareholder accounts and certain sub-accounts; and

         (v)      to make periodic reports to the Trust's Board of Trustees
                  concerning the Trust's operations.







                                       46
<PAGE>   76


THE SUBCUSTODIAN

         Bank One Trust Company, N.A. (the "Subcustodian") serves as
Subcustodian in connection with the Trust's securities lending activities for
domestic securities, pursuant to a Subcustodian Agreement between the Trust,
State Street and the Subcustodian and a Securities Lending Agreement between the
Trust, Banc One Investment Advisors, and the Subcustodian. The Subcustodian is
an indirect subsidiary of Bank One Corporation and an affiliate of Banc One
Investment Advisors. The Subcustodian is entitled to a fee from the Trust under
the agreements, 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.


EXPERTS

The law firm of Ropes & Gray, One Franklin Square, 1301 K Street, N.W., Suite
800 East, Washington, D.C. 20005 is counsel to the Trust. From time to time,
Ropes & Gray has rendered legal services to Bank One Corporation and its
subsidiary banks.


                             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 May 23, 1985 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, and to classify or reclassify any series
into one or more classes by setting or changing in any one or more respects the
preferences, designations, conversion, or other rights, restrictions, or
limitations as to dividends, conditions of redemption, qualifications, or other
terms applicable to the Shares of such class, subject to those matters expressly
provided for in the Declaration of Trust, as amended, with respect to the Shares
of each series of the Trust. The Trust presently includes 55 series of Shares,
which represent interests in the following:

1.       The Prime Money Market Fund;
2.       The U.S. Treasury Securities Money Market Fund;
3.       The Municipal Money Market Fund;
4.       The Ohio Municipal Money Market Fund;
5.       The Equity Income Fund;
6.       The Mid Cap Value Fund;
7.       The Mid Cap Growth Fund;
8.       The Diversified Equity Fund;
9.       The Small Cap Growth Fund;
10.      The Large Cap Value Fund;
11.      The Large Cap Growth Fund;
12.      The International Equity Index Fund;
13.      The Equity Index Fund;
14.      The Balanced Fund;
15.      The Technology Fund;
16.      The Real Estate Fund;
17.      The Income Bond Fund;
18.      The Short-Term Bond Fund;






                                       47
<PAGE>   77

19.      The Intermediate Bond Fund;
20.      The Government Bond Fund;
21.      The Ultra Short-Term Bond Fund;
22.      The High Yield Bond Fund;
23.      The Investor Growth Fund;
24.      The Investor Growth & Income Fund;
25.      The Investor Conservative Growth Fund;
26.      The Investor Balanced Fund;
27.      The Municipal Income Fund;
28.      The Intermediate Tax-Free Bond Fund;
29.      The Ohio Municipal Bond Fund;
30.      The West Virginia Municipal Bond Fund;
31.      The Kentucky Municipal Bond Fund;
32.      The Louisiana Municipal Bond Fund;
33.      The Arizona Municipal Bond Fund;
34.      The Treasury Only Money Market Fund;
35.      The Government Money Market Fund;
36.      The Tax-Exempt Money Market Fund;
37.      The Institutional Prime Money Market Fund;
38.      The Treasury & Agency Fund;
39.      The Small Cap Value Fund;
40.      The Diversified Mid Cap Fund;
41.      The Diversified International Fund;
42.      The Market Expansion Index Fund;
43.      The Bond Fund;
44.      The Short-Term Municipal Bond Fund;
45.      The Tax-Free Bond Fund;
46.      The Michigan Municipal Bond Fund;
47.      The Michigan Municipal Money Market Fund;
48.      The Cash Management Money Market Fund;
49.      The Treasury Cash Management Money Market Fund;
50.      The Treasury Prime Cash Management Money Market Fund;
51.      The U.S. Government Securities Cash Management Money Market Fund;
52.      The Municipal Cash Management Money Market Fund;
53.      The U.S. Government Securities Money Market Fund;
54.      The Treasury Prime Money Market Fund;
55.      The Mortgage-Backed Securities Fund

         Generally, the Funds of the Trust (other than the Institutional Money
Market Funds, the Money Market Funds and the Cash Management Funds) offer shares
in four separate classes: Class I Shares, Class A Shares, Class B and Class C
Shares. The Institutional Money Market Funds (except for the Cash Management
Funds) may offer Class S Shares. Certain of the Money Market Funds offer Service
Class Shares. The classes of shares currently offered by the Funds can be found
under the topic "The Trust" at the beginning of the Statement of Additional
Information dated as of November 1, 1999. In addition, please read the relevant
Prospectuses for the Funds for more details.

         Shares have no subscription or preemptive rights and only such
conversion or exchange rights as the Board may grant in its discretion. When
issued for payment as described in the Prospectus, this Statement of Additional
Information, and the Statement of Additional Information, dated November 1,
1999, the Trust's Shares will be fully paid and non-assessable. In the event of
a liquidation or dissolution of the Trust, Shares of the Fund is entitled to
receive the assets available for distribution belonging to the Fund, and a
proportionate distribution, based upon the relative asset values of the
respective Funds, of any general assets not belonging to any particular Fund
which are available for distribution.


1.       Class B and C Shares are currently not available for purchase in all
         Funds of the Trust.





                                       48
<PAGE>   78

         Rule 18f-2 under the 1940 Act 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 Fund affected by the matter. For purposes of determining whether the
approval of a majority of the outstanding Shares of a Fund will be required in
connection with a matter, a Fund will be deemed to be affected by a matter
unless it is clear that the interests of each Fund in the matter are identical,
or that the matter does not affect any interest of the Fund. 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 Fund only if approved
by a majority of the outstanding Shares of such Fund. 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.


         Class A Shares, Class B Shares, Class C Shares, Service Class Shares
and Class S Shares of a Fund each have exclusive voting rights with respect to
matters pertaining to that class under the Distribution Plan.


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 liable 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. The Declaration of Trust also provides that the Trust shall,
upon request, assume the defense of any claim made against any Shareholder for
any act or obligation of the Trust, and shall satisfy any judgment thereon.
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.


PERFORMANCE

         From time to time, the Fund may advertise yield, total return and/or
distribution rate. These figures will be based on historical earnings and are
not intended to indicate future performance. The yield of the Fund refers to the
annualized income generated by an investment in the Fund over a specified 30-day
period. The yield is calculated by assuming that the income generated by the
investment during that period is generated over a one-year period and is shown
as a percentage of the investment.

         Total return is the change in value of an investment in the Fund over a
given period, assuming reinvestment of any dividends and capital gains. A
cumulative total return reflects an actual rate of return over a stated period
of time. An average annual total return is a hypothetical rate of return that,
if achieved annually, would have produced the same cumulative total return if
performance had been constant over the entire period. Average annual total
returns smooth out variations in performance; they are not the same as actual
year-by-year results.

         The distribution rate is computed by dividing the total amount of the
dividends per share paid out during the past period by the maximum offering
price or month-end net asset value depending on the class of the Fund. This
figure is then "annualized" (multiplied by 365 days and divided by the
applicable number of days in the period). Classes with a front-end sales charge
would incorporate the offering price into the distribution yield in place of
month-end net asset value.




                                       49
<PAGE>   79

         Distribution rate is a measure of the level of income paid out in cash
to Shareholders over a specified period. It differs from yield and total return
and is not intended to be a complete measure of performance. Furthermore, the
distribution rate may include return of principal and/or capital gains. Total
return is the change in value of a hypothetical investment over a given period
assuming reinvestment of dividends and capital gain distributions. The yield
refers to the cumulative 30-day rolling net investment income, divided by
maximum offering price and multiplied by average shares outstanding during this
period.

CALCULATION OF PERFORMANCE DATA


         Performance information showing the Fund's total return and/or 30-day
yield with respect to a particular class may be presented from time to time in
advertising and sales literature. A 30-day yield is calculated by dividing the
net investment income per-share earned during the 30-day base period by the
maximum offering price per share on the last day of the period, according to the
following formula:

                                           a-b
                                      -------------
30-Day Yield              =           2[(cd +1)6-1]

         In the above formula, "a" represents dividends and interest earned by a
particular class during the 30-day base period; "b" represents expenses accrued
to a particular class for the 30-day base period (net of reimbursements); "c"
represents the average daily number of Shares of a particular class outstanding
during the 30-day base period that were entitled to receive dividends; and "d"
represents the maximum offering price per share of a particular class on the
last day of the 30-day base period.

         The Fund's respective cumulative total return and average annual total
return was determined by calculating the change in the value of a hypothetical
$1,000 investment in a particular class of the Fund for each of the periods
shown. Cumulative total return for a particular class of the Fund is computed by
determining the rate of return over the applicable period that would equate the
initial amount invested to the ending redeemable value of the investment. The
cumulative return is calculated as the total dollar increase or decrease in the
value of an account assuming reinvestment of all distributions divided by the
original initial investment. The average annual return for a particular class of
the Fund 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 indicated the positive or negative investment results that
an investor would have experienced from changes in share price and reinvestment
of dividends and capital gains distributions.

         Performance information showing the Fund's and/or particular Class's
distribution rate may be presented from time to time in advertising and sales.
The distribution rate is calculated as follows:

distribution yield            =             a/(b) x 365
                                            -----------
                                                 c

         In the formula, "a" represents dividends distributed by a particular
class during that period; "b" represents month end offer price or net asset
value for a particular class; "c" represents the number of days in the period
being calculated. "365" is the number of days in a year, used to annualize the
distribution yield.

         Performance will fluctuate from time to time and is not necessarily
representative of future results. Accordingly, the Fund'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 the Fund's
quality, composition, and maturity, as well as expenses allocated to the Fund.
Fees imposed upon customer accounts at a bank, with regard to Class I Shares, or
a Participating Organization, with regard to Class A Shares, will reduce the
Fund's effective yield to customers. Performance data for the Funds through June
30, 2000 (calculated as described above) is as follows:




                                       50
<PAGE>   80
                         MORTGAGE-BACKED SECURITIES FUND



<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURN AS OF 6/30/00
                                                                                                            30-DAY
                                    INCEPTION                                                  LIFE OF        SEC
                                      DATE          1 YEAR     3 YEAR     5 YEAR     10 YEAR    FUND         YIELD
                                      ----          ------     ------     ------     -------    ----         -----
<S>                                 <C>             <C>        <C>        <C>        <C>       <C>          <C>
Class A......................       12/31/83         3.00%      5.74%      7.90%      8.55%    10.02%          NA

Class I......................       12/31/83         3.34%      6.10%      8.27%      8.93%    10.40%          NA
</TABLE>



 (1) The quoted performance of the Fund for periods prior to August 18, 2000 is
represented by the performance of a common trust fund managed by Banc One
Investment Advisors or its predecessors (the "Common Trust Fund") before the
effective date of the registration statement of the Fund. The quoted performance
is adjusted to reflect the estimated current fees of the Fund on a class by
class basis absent any waivers. The Common Trust Fund was not registered under
the 1940 Act and therefore was not subject to certain investment restrictions,
limitations, and diversification requirements that are imposed by the 1940 Act
and the Code. If the Common Trust Fund had been so registered, its performance
might have been adversely affected.


          The performance of the Fund may be compared in publications to the
          performance of various indices and investments (such as other mutual
          funds) for which reliable performance data is available, as well as
          averages, performance rankings or other information prepared by
          recognized mutual fund statistical services, as set forth below.

          In addition, the performance of each class of the Fund may from time
          to time be compared to that of other mutual funds tracked by mutual
          fund rating services, to that of broad groups of comparable mutual
          funds or to that of unmanaged indices that may assume investment of
          dividends but do not reflect deductions for administrative and
          management costs. Further, the performance of each class of the Fund
          may be compared to other funds or to relevant indices that may
          calculate total return without reflecting sales charges; in which
          case, the Fund may advertise its total return in the same manner. If
          reflected, sales charges would reduce these total return calculations.

          The Fund may quote actual total return performance from time to time
          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. Comparative information on the Consumer
          Price Index may also be included.

          The Fund 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.; they may also use indices,
          including those identified in the Prospectus for performance
          comparison. Statistical and performance information compiled and
          maintained by CDA Technologies, Inc. and Interactive Data Corporation
          may also be used.

          The Fund may quote actual yield and/or total return performance in
          advertising and other types of literature compared to indices or
          averages of 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. Comparative information on the
          Consumer Price Index may also be included.

          The Fund may also use comparative performance information computed by
          and available from certain industry and general market research and
          publications, as well as statistical and performance information,
          compiled and maintained by CDA Technologies, Inc. and Interactive Data
          Corporation.




                                       51
<PAGE>   81

          The Fund may also use current interest rate and yield information on
          government debt obligations of various durations, as reported weekly
          by the Federal Reserve (Bulletin H. 15). In addition, current rate
          information on municipal debt obligations of various durations, as
          reported daily by the Bond Buyer, may also be used.

MISCELLANEOUS

          The Trust is not required to hold a meeting of Shareholders for the
purpose of 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 the purpose, which 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 Trust's Prospectuses, this Statement of Additional
Information and the Statement of Additional Information, dated November 1, 1999,
"assets belonging to a Fund" means the consideration received by the Trust upon
the issuance or sale of Shares in that Fund, 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
Fund that are allocated to that Fund by the Trust's 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 Funds will be the
relative net asset values of the respective Funds at the time of allocation.
Assets belonging to a particular Fund is charged with the direct liabilities and
expenses in respect of that Fund, and with a share of the general liabilities
and expenses of the Trust not readily identified as belonging to a particular
Fund that are allocated to that Fund in proportion to the relative net asset
values of the respective Funds at the time of allocation. The timing of
allocations of general assets and general liabilities and expenses of the Trust
to particular Funds 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 Fund is
conclusive. As used in the Trust's Prospectuses , this Statement of Additional
Information, and the Statement of Additional Information, dated November 1,
1999, a "vote of a majority of the outstanding Shares" of the Trust, a
particular Fund, or a particular class of Shares of a Fund, means the
affirmative vote of the lesser of (a) more than 50% of the outstanding Shares of
the Trust, such Fund, or such class of Shares of such Fund, or (b) 67% or more
of the Shares of the Trust, such Fund, or such class of Shares of such Fund
present at a meeting at which the holders of more than 50% of the outstanding
Shares of the Trust, such Fund, or such class of Shares of such Fund is
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 of the 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.

          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.




                                       52
<PAGE>   82


FINANCIAL STATEMENTS

         Because the Mortgage-Backed Securities Fund is a series without assets
or operating history, there are no financial statements for the Fund.






                                       53
<PAGE>   83







                       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.

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.







                                      1
<PAGE>   84

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.



                           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.




                                      2
<PAGE>   85

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.

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.




                                      3
<PAGE>   86

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.

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.




                                      4
<PAGE>   87

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.



                        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.




                                      5
<PAGE>   88

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.

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.






                                      6
<PAGE>   89

Plus (+)
or
minus (-) Following ratings from "AA" to "CCC" show relative standing within the
major rating categories.



                      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.






                                      7
<PAGE>   90

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.


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.






                                      8
<PAGE>   91

                          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.



                      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.




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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.

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.




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                     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.







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