STEPSTONE FUNDS
497, 1996-04-02
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<PAGE>   1


                                STEPSTONE FUNDS

                                 BALANCED FUND
                              VALUE MOMENTUM FUND
                               GROWTH EQUITY FUND
                              EMERGING GROWTH FUND
                             BLUE CHIP GROWTH FUND

                       SUPPLEMENT DATED APRIL 1, 1996 TO
                         INSTITUTIONAL CLASS PROSPECTUS
                               DATED JUNE 1, 1995

THIS SUPPLEMENT TO THE PROSPECTUS SUPERSEDES AND REPLACES ANY EXISTING
SUPPLEMENTS TO THE PROSPECTUS. THIS SUPPLEMENT PROVIDES NEW AND ADDITIONAL
INFORMATION BEYOND THAT CONTAINED IN THE PROSPECTUS AND SHOULD BE CONTAINED AND
READ IN CONJUNCTION WITH SUCH PROSPECTUS.

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

At a Special Meeting of Shareholders of Stepstone Funds (the "Trust") held on
March 7, 1996, Shareholders approved new investment advisory and subadvisory
agreements in connection with a merger among Union Bank, the Trust's current
investment advisor, The Bank of California, N.A. and BanCal Tri-State
Corporation which will take effect on or about April 1, 1996.  After the
merger, the resulting entity, Union Bank of California, N.A., will serve as
Advisor to each of the Trust's Funds and Bank of Tokyo-Mitsubishi Trust Company
will serve as SubAdvisor to the Blue Chip Growth and Emerging Growth Funds.  In
connection with this merger, all references in this prospectus to Union Capital
Advisors as Advisor to the Trust are hereby replaced with Union Bank of
California, N.A.  In addition, effective July 14, 1995, Clyde N. Powers no
longer serves as portfolio manager of the Growth Equity Fund nor as
co-portfolio manager of the Balanced Fund.  Due to this change and the
aforementioned merger, the final paragraph of "The Advisor" section on page 10
of the prospectus is deleted and the third, fourth, fifth and sixth paragraphs
are replaced with the following language:

         For the fiscal year ended January 31, 1996, Union Bank, as predecessor
         to the Advisor, was paid an advisory fee of .60% of the average daily
         net assets of the Growth Equity, Value Momentum, Balanced, and Blue
         Chip Growth Funds, and .80% of the average daily net assets of the
         Emerging Growth Fund.

         Merus-UCA Capital Management ("Merus"), 445 S. Figueroa Street, Los
         Angeles, California 90071, which operates as a separate division of
         Union Bank of California, N.A., manages the day-to-day operations of
         each Fund.  On April 1, 1996, the former Union Bank merged with the
         Bank of California, and the resulting bank changed its name to Union
         Bank of California, N.A.  Each of the former banks or its predecessor
         bank had been in banking since the early 1900's, and each historically
         has had significant investment functions within their Trust and
         Investment Divisions.  At the same time, the banks' asset management
         divisions were combined to form Merus.  Union Bank of California, N.A.
         is a subsidiary of Bank of Tokyo-Mitsubishi, Ltd., Tokyo.

         Richard Earnest, a Vice President and Chief Investment Officer of the
         Advisor, has served as team leader of the Value Momentum Fund since
         its inception, and has been with the Advisor and its predecessor since
         1964.  Carl J. Colombo, a Vice President of the Advisor, has served as
         team leader of the Balanced Fund since its inception, and as team
         leader of the Growth Equity Fund since May, 1995, and has been with
         the Advisor and its predecessor since 1985.

         As of April 1, 1996, Merus managed approximately $12 billion in
         individual portfolios and collective funds.  Merus' clients range from
         pension funds, national labor union plans and foundations to personal
         investments and trust portfolios.





<PAGE>   2
                         ------------------------------

Effective March, 1996, Harold C. Elliot no longer serves as portfolio manager
to the Blue Chip Growth Fund.  As of this date, the day-to-day management of
the Blue Chip Growth Fund's investments is the responsibility of a committee of
investment professionals.  As a result of this change and the aforementioned
merger, "The SubAdvisor" section on page 11 of the prospectus is replaced with
the following language:

         The Advisor and Bank of Tokyo-Mitsubishi Trust Company (the
         "SubAdvisor") have entered into an investment subadvisory agreement
         relating to the Emerging Growth and Blue Chip Growth Funds (the
         "Investment SubAdvisory Agreement").  Under the Investment SubAdvisory
         Agreement, the SubAdvisor makes the day-to-day investment decisions
         for the assets of the Emerging Growth and Blue Chip Growth Funds,
         subject to the supervision of, and policies established by, the
         Advisor and the Trustees of the Trust.  The Trust's shares are not
         sponsored, endorsed or guaranteed by and do not constitute obligations
         or deposits of the SubAdvisor and are not guaranteed by the FDIC or
         any other governmental agency.

         The SubAdvisor is entitled to a fee, which is calculated daily and
         paid monthly out of the Advisor's fee, at an annual rate of .30% of
         the average daily net assets of the Blue Chip Growth Fund and .50% of
         the average daily net assets of the Emerging Growth Fund.  For the
         fiscal year ended January 31, 1996, The Bank of Tokyo Trust Company,
         as predecessor to the SubAdvisor, received .30% and .50% of the
         average daily net assets of the Blue Chip Growth and Emerging Growth
         Funds, respectively.  In addition, Bank of Tokyo-Mitsubishi Trust
         Company also serves as SubAdvisor to the Trust's Government Securities
         and Convertible Securities Funds.

         Bank of Tokyo-Mitsubishi Trust Company ("BOT-MTC"), headquartered at
         1251 Avenue of the Americas, New York, New York 10116 and with offices
         at 100 Broadway, New York, New York 10005, operates as a wholly-owned
         subsidiary of The Bank of Tokyo-Mitsubishi, Ltd. BOT-MTC was formed by
         the merger on April 1, 1996 between The Bank of Tokyo Trust Company, a
         wholly-owned subsidiary of the Bank of Tokyo, Ltd., and Mitsubishi
         Bank Trust Company of New York, a wholly-owned subsidiary of The
         Mitsubishi Bank, Limited.  The Bank of Tokyo Trust Company was the
         surviving entity, and changed its name to Bank of Tokyo-Mitsubishi
         Trust Company.  The parent companies merged on the same date.  Prior
         to the merger, the sub-advisory services were provided by The Bank of
         Tokyo Trust Company.  The Bank of Tokyo Trust Company was established
         in 1955 and has provided trust services since that time and management
         services since 1965.

         The SubAdvisor serves as portfolio manager to bank common funds,
         employee benefit funds and personal trust accounts, managing assets in
         money market, equity and fixed income portfolios.  As of April 1,
         1996, Bank of Tokyo-Mitsubishi Trust Company managed $750 million in
         individual portfolios and collective funds.  In addition, Bank of
         Tokyo-Mitsubishi Trust Company also serves as SubAdvisor to the
         Trust's Intermediate-Term Bond, Government Securities and Convertible
         Securities Funds.

         The day-to-day management of the Blue Chip Growth Fund's investments
         is the responsibility of a team of investment professionals.
         Decisions are made by committee and no person has primary
         responsibility for making recommendations to the committee.

         Seth E. Shalov has served as the portfolio manager to the Emerging
         Growth Fund since its inception.  Mr. Shalov has served as the
         SubAdvisor's Senior Portfolio Manager since October, 1988.


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



               PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE





                                      -2-
<PAGE>   3
                                STEPSTONE FUNDS

                                 BALANCED FUND
                              VALUE MOMENTUM FUND
                               GROWTH EQUITY FUND
                              EMERGING GROWTH FUND

                       SUPPLEMENT DATED APRIL 1, 1996 TO
                          INVESTMENT CLASS PROSPECTUS
                               DATED JUNE 1, 1995

THIS SUPPLEMENT TO THE PROSPECTUS SUPERSEDES AND REPLACES ANY EXISTING
SUPPLEMENTS TO THE PROSPECTUS.  THIS SUPPLEMENT PROVIDES NEW AND ADDITIONAL
INFORMATION BEYOND THAT CONTAINED IN THE PROSPECTUS AND SHOULD BE RETAINED AND
READ IN CONJUNCTION WITH SUCH PROSPECTUS.

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

Effective April 8, 1996, State Street Bank, 225 Franklin Street, Boston,
Massachusetts 02110, will serve as transfer agent for the Investment Class
Shares of the Balanced, Value Momentum and Growth Equity Funds.

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

Effective October 1, 1995 the Balanced Fund, Value Momentum Fund, and Growth
Equity Fund (the "Funds") will begin to pay .25% in 12b-1 fees as permitted
under the Investment Class Plan.  Therefore the Annual Operating Expenses table
for these Funds is hereby replaced with the following:

ANNUAL OPERATING EXPENSES
<TABLE>
<CAPTION>
(As a percentage of offering price)
- ---------------------------------------------------------------------------------------------------------
                                                                                    VALUE           GROWTH
                                                                     BALANCED       MOMENTUM        EQUITY
                                                                     FUND           FUND            FUND
<S>                                                                 <C>            <C>              <C>
Advisory Fees . . . . . . . . . . . . . . . . . . . . . . . .        .60%           .60%             .60%
12b-1 Fees (After Fee Waivers)(1) . . . . . . . . . . . . . .        .25%           .25%             .25%
Other Expenses  . . . . . . . . . . . . . . . . . . . . . . .        .20%           .20%             .20%
- ---------------------------------------------------------------------------------------------------------
Total Operating Expenses (After Fee Waivers)(2) . . . . . . .       1.05%          1.05%            1.05%
=========================================================================================================
</TABLE>
(1)      Absent fee waivers, 12b-1 Fees would be .40%.
(2)      "Total Operating Expenses" for the Balanced Fund, Value Momentum Fund
         and Growth Equity Fund have been restated to reflect current expenses
         and the aforementioned fee waivers.  Absent fee waivers, "Total
         Operating Expenses" would be 1.20%, 1.20% and 1.20% for the Balanced
         Fund, Value Momentum Fund and Growth Equity Fund.

<TABLE>
<CAPTION>
EXAMPLE:
- --------------------------------------------------------------------------------------------------------
                                                          1 YR.        3 YRS.       5 YRS.       10 YRS.
- --------------------------------------------------------------------------------------------------------
<S>                                                       <C>          <C>          <C>          <C>
 An investor would pay the following
     expenses on a $1,000 investment assuming  (1)
     imposition of the maximum sales charge; (2) 5%
     return and (3) redemption at the end of each
     time.

 Balanced Fund . . . . . . . . . . . . . . . . . . . .    $55          $77          $100         $167
 Value Momentum Fund . . . . . . . . . . . . . . . . .    $55          $77          $100         $167
</TABLE>
<PAGE>   4
<TABLE>
 <S>                                                      <C>          <C>          <C>          <C>
 Growth Equity Fund  . . . . . . . . . . . . . . . . .    $55          $77          $100         $167
</TABLE>


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

Effective as of February 15, 1996, the sales charge normally imposed on
purchases of the Funds' Investment Class Shares in the amount of $1,000,000 or
more is waived.  Such purchases shall be subject to a 1.00% contingent deferred
sales charge payable to the Distributor, however, if such shares are redeemed
prior to one year from the date of purchase.  Therefore, the sales charge table
in the section entitled "PURCHASE AND REDEMPTION OF SHARES" found on page 12 of
the Prospectus is replaced with the following:


<TABLE>
<CAPTION>
                           SALES CHARGE AS A           SALES CHARGE AS             COMMISSION AS PERCENTAGE
                           PERCENTAGE OF OFFERING      APPROPRIATE PERCENTAGE      OF OFFERING PRICE
AMOUNT OF PURCHASE         PRICE                       OF NET AMOUNT INVESTED
- -----------------------------------------------------------------------------------------------------------
<S>                        <C>                         <C>                         <C>
$        0- 49,999         4.50%                       4.71%                       4.05%
$   50,000- 99,999         4.00%                       4.17%                       3.60%
$  100,000-249,999         3.50%                       3.63%                       3.15%
$  250,000-499,999         2.50%                       2.56%                       2.25%
$  500,000-999,999         1.50%                       1.52%                       1.35%
$1,000,000 and over        0.00%*                      0.00%                       0.00%
</TABLE>


*A contingent deferred sales charge of 1.00% will be charged if such Investment
Class shares are redeemed prior to one year from date of purchase.

       The first sentence of the section on page 13 entitled "PURCHASE AND
REDEMPTION OF SHARES-Other Circumstances" should be augmented to include the
following:

       (vii) sold to purchasers of Investment Class shares of the Growth
Equity Fund that are sponsors of other investment companies that are unit
investment trusts for deposit by such sponsors into such unit investment trusts,
and to purchasers of Investment Class shares of the Growth Equity Fund that are
holders of such unit investment trusts that invest distributions from such
investment trusts in Investment Class shares of the Growth Equity Fund.


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


At a Special Meeting of Shareholders of Stepstone Funds (the "Trust") held on
March 7, 1996, Shareholders approved new investment advisory and subadvisory
agreements in connection with a merger among Union Bank, the Trust's current
investment advisor, The Bank of California, N.A. and BanCal Tri-State
Corporation which will take effect on or about April 1, 1996.  After the
merger, the resulting entity, Union Bank of California, N.A., will serve as
Advisor to each of the Trust's Funds and Bank of Tokyo-Mitsubishi Trust Company
will serve as SubAdvisor to the Emerging Growth Fund.  In connection with this
merger, all references in this prospectus to Union Capital Advisors as Advisor
to the Trust are hereby replaced with Union Bank of California, N.A.  In
addition, effective July 14, 1995, Clyde N. Powers no longer serves as
portfolio manager of the Growth Equity Fund nor as co-portfolio manager of the
Balanced Fund.  Due to this change and the aforementioned merger, the final
paragraph of "The Advisor" section on pages 9 and 10





                                      -2-
<PAGE>   5
of the prospectus is deleted and the third, fourth, fifth and sixth paragraphs
are replaced with the following language:

         For the fiscal year ended January 31, 1996, Union Bank, as predecessor
         to the Advisor, was paid an advisory fee of .60% of the average daily
         net assets of the Growth Equity, Value Momentum and Balanced Funds,
         and .80% of the average daily net assets of the Emerging Growth Fund.

         Merus-UCA Capital Management ("Merus"), 445 S. Figueroa Street, Los
         Angeles, California 90071, which operates as a separate division of
         Union Bank of California, N.A., manages the day-to-day operations of
         each Fund.  On April 1, 1996, the former Union Bank merged with the
         Bank of California, and the resulting bank changed its name to Union
         Bank of California, N.A.  Each of the former banks or its predecessor
         bank had been in banking since the early 1900's, and each historically
         has had significant investment functions within their Trust and
         Investment Divisions.  At the same time, the banks' asset management
         divisions were combined to form Merus.  Union Bank of California, N.A.
         is a subsidiary of Bank of Tokyo-Mitsubishi, Ltd., Tokyo.

         Richard Earnest, a Vice President and Chief Investment Officer of the
         Advisor, has served as team leader of the Value Momentum Fund since
         its inception, and has been with the Advisor and its predecessor since
         1964.  Carl J. Colombo, a Vice President of the Advisor, has served as
         team leader of the Balanced Fund since its inception, and as team
         leader of the Growth Equity Fund since May, 1995, and has been with
         the Advisor and its predecessor since 1985.

         As of April 1, 1996, Merus managed approximately $12 billion in
         individual portfolios and collective funds.  Merus' clients range from
         pension funds, national labor union plans and foundations to personal
         investments and trust portfolios.

"The SubAdvisor" section on pages 10 and 11 of the prospectus is replaced with
the following language:

         The Advisor and Bank of Tokyo-Mitsubishi Trust Company (the
         "SubAdvisor") have entered into an investment subadvisory agreement
         relating to the Emerging Growth Fund (the "Investment SubAdvisory
         Agreement").  Under the Investment SubAdvisory Agreement, the
         SubAdvisor makes the day-to-day investment decisions for the assets of
         the Emerging Growth Fund, subject to the supervision of, and policies
         established by, the Advisor and the Trustees of the Trust.  The
         Trust's shares are not sponsored, endorsed or guaranteed by and do not
         constitute obligations or deposits of the SubAdvisor and are not
         guaranteed by the FDIC or any other governmental agency.

         The SubAdvisor is entitled to a fee, which is calculated daily and
         paid monthly out of the Advisor's fee, at an annual rate of .50% of
         the average daily net assets of the Emerging Growth Fund.  For the
         fiscal year ended January 31, 1996, The Bank of Tokyo Trust Company,
         as predecessor to the SubAdvisor, received .50% of the average daily
         net assets of the Emerging Growth Fund.

         Bank of Tokyo-Mitsubishi Trust Company ("BOT-MTC"), headquartered at
         1251 Avenue of the Americas, New York, New York 10116 and with offices
         at 100 Broadway, New York, New York 10005, operates as a wholly-owned
         subsidiary of The Bank of Tokyo-Mitsubishi, Ltd.   BOT-MTC was formed
         by the merger on April 1, 1996 between The Bank of Tokyo Trust
         Company, a wholly-owned subsidiary of The Bank of Tokyo, Ltd. and
         Mitsubishi Bank Trust Company of New York, a wholly-owned subsidiary
         of The Mitsubishi Bank, Limited.  The Bank of Tokyo Trust Company was
         the surviving entity, and changed its name to Bank of Tokyo-Mitsubishi
         Trust Company.  The parent companies merged on the same date.  Prior
         to the merger, the sub-advisory services were provided by The Bank of
         Tokyo Trust Company.  The Bank of Tokyo Trust Company was established
         in 1955 and has provided trust services since that time and management
         services since 1965.





                                      -3-
<PAGE>   6
         The SubAdvisor serves as portfolio manager to bank common funds,
         employee benefit funds and personal trust accounts, managing assets in
         money market, equity and fixed income portfolios.  As of April 1,
         1996, Bank of Tokyo-Mitsubishi Trust Company managed $750 million in
         individual portfolios and collective funds.  In addition, Bank of
         Tokyo-Mitsubishi Trust Company also serves as SubAdvisor to the
         Trust's Intermediate-Term Bond, Government Securities and Convertible
         Securities Funds.

         Seth E. Shalov has served as the portfolio manager to the Emerging
         Growth Fund since its inception.  Mr. Shalov has served as the
         SubAdvisor's Senior Portfolio Manager since October, 1988.



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





               PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE





                                      -4-
<PAGE>   7
                                STEPSTONE FUNDS

                             BLUE CHIP GROWTH FUND

                       SUPPLEMENT DATED APRIL 1, 1996 TO
                          INVESTMENT CLASS PROSPECTUS
                               DATED JUNE 1, 1995


THIS SUPPLEMENT TO THE PROSPECTUS SUPERSEDES AND REPLACES ANY EXISTING
SUPPLEMENTS TO THE PROSPECTUS.  THIS SUPPLEMENT PROVIDES NEW AND ADDITIONAL
INFORMATION BEYOND THAT CONTAINED IN THE PROSPECTUS AND SHOULD BE RETAINED AND
READ IN CONJUNCTION WITH SUCH PROSPECTUS.

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

At a Special Meeting of Shareholders of Stepstone Funds (the "Trust") held on
March 7, 1996, Shareholders approved new investment advisory and subadvisory
agreements in connection with a merger among Union Bank, the Trust's current
investment advisor, The Bank of California, N.A. and BanCal Tri-State
Corporation which will take effect on or about April 1, 1996.  After the
merger, the resulting entity, Union Bank of California, N.A., will serve as
Advisor to each of the Trust's Funds and Bank of Tokyo-Mitsubishi Trust Company
will serve as SubAdvisor to the Blue Chip Growth Fund.  In connection with this
merger, all references in this prospectus to Union Capital Advisors as Advisor
to the Trust are hereby replaced with Union Bank of California, N.A.  In
addition, the final paragraph of "The Advisor" section on page 6 of the
prospectus is deleted and the second, third and fourth paragraphs are replaced
with the following language:

         The Advisor is entitled to a fee, which is calculated daily and paid
         monthly, at an annual rate of .60% of the average daily net assets of
         the Fund.  The Advisor may from time to time waive all or a portion of
         its fee in order to limit the operating expenses of the Fund.  Any
         such waiver is voluntary, and may be terminated at any time in the
         Advisor's sole discretion.  For the fiscal year ended January 31,
         1996, Union Bank, as predecessor to the Advisor, was paid an advisory
         fee of .60% of the average daily net assets of the Fund.

         Merus-UCA Capital Management ("Merus"), 445 S. Figueroa Street, Los
         Angeles, California 90071, which operates as a separate division of
         Union Bank of California, N.A., manages the day-to-day operations of
         the Fund.  On April 1, 1996, the former Union Bank merged with the
         Bank of California, and the resulting bank changed its name to Union
         Bank of California, N.A.  Each of the former banks or its predecessor
         bank had been in banking since the early 1900's, and each historically
         has had significant investment functions within their Trust and
         Investment Divisions.  At the same time, the banks' asset management
         divisions were combined to form Merus.  Union Bank of California, N.A.
         is a subsidiary of Bank of Tokyo-Mitsubishi, Ltd., Tokyo.

         As of April 1, 1996, Merus managed approximately $12 billion in
         individual portfolios and collective funds.  Merus' clients range from
         pension funds, national labor union plans and foundations to personal
         investments and trust portfolios.


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

Effective March, 1996, Harold C. Elliot no longer serves as portfolio manager
to the Blue Chip Growth Fund.  As of this date, the day-to-day management of
the Blue Chip Growth Fund's investments is the responsibility of a committee of
investment professionals.  As a result of this change and the aforementioned
merger, "The SubAdvisor" section on pages 6 and 7 of the prospectus is replaced
with the following language:





<PAGE>   8
         The Advisor and Bank of Tokyo-Mitsubishi Trust Company (the
         "SubAdvisor") have entered into an investment subadvisory agreement
         relating to the Emerging Growth and Blue Chip Growth Funds (the
         "Investment SubAdvisory Agreement").  Under the Investment SubAdvisory
         Agreement, the SubAdvisor makes the day-to-day investment decisions
         for the assets of the Fund, subject to the supervision of, and
         policies established by, the Advisor and the Trustees of the Trust.
         The Trust's shares are not sponsored, endorsed or guaranteed by and do
         not constitute obligations or deposits of the SubAdvisor and are not
         guaranteed by the FDIC or any other governmental agency.

         The SubAdvisor is entitled to a fee, which is calculated daily and
         paid monthly out of the Advisor's fee, at an annual rate of .30% of
         the average daily net assets of the Fund.  For the fiscal year ended
         January 31, 1996, The Bank of Tokyo Trust Company, as predecessor to
         the SubAdvisor, received .30% of the average daily net assets of the
         Fund.

         Bank of Tokyo-Mitsubishi Trust Company ("BOT-MTC"), headquartered at
         1251 Avenue of the Americas, New York, New York 10116 and with offices
         at 100 Broadway, New York, New York 10005, operates as a wholly-owned
         subsidiary of The Bank of Tokyo-Mitsubishi, Ltd. BOT-MTC was formed by
         the merger on April 1, 1996 between The Bank of Tokyo Trust Company, a
         wholly-owned subsidiary of The Bank of Tokyo, Ltd and Mitsubishi Bank
         Trust Company of New York, a wholly-owned subsidiary of The Mitsubishi
         Bank, Limited.  The Bank of Tokyo Trust Company was the surviving
         entity, and changed its name to Bank of Tokyo-Mitsubishi Trust
         Company.  The parent companies merged on the same date.  Prior to the
         merger, the sub-advisory services were provided by The Bank of Tokyo
         Trust Company.  The Bank of Tokyo Trust Company was established in
         1955 and has provided trust services since that time and management
         services since 1965.

         The SubAdvisor serves as portfolio manager to bank common funds,
         employee benefit funds and personal trust accounts, managing assets in
         money market, equity and fixed income portfolios.  As of April 1,
         1996, Bank of Tokyo-Mitsubishi Trust Company managed $750 million in
         individual portfolios and collective funds.  In addition, Bank of
         Tokyo-Mitsubishi Trust Company also serves as SubAdvisor to the
         Trust's Government Securities, Convertible Securities and Emerging
         Growth Funds.

         The day-to-day management of the Blue Chip Growth Fund's investments
         is the responsibility of a team of investment professionals.
         Decisions are made by committee and no person has primary
         responsibility for making recommendations to the committee.


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


               PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE





                                      -2-
<PAGE>   9
                                STEPSTONE FUNDS

                          INTERMEDIATE-TERM BOND FUND
                           GOVERNMENT SECURITIES FUND
                          CONVERTIBLE SECURITIES FUND

                       SUPPLEMENT DATED APRIL 1, 1996 TO
                         INSTITUTIONAL CLASS PROSPECTUS
                               DATED JUNE 1, 1995


THIS SUPPLEMENT TO THE PROSPECTUS SUPERSEDES AND REPLACES ANY EXISTING
SUPPLEMENTS TO THE PROSPECTUS.  THIS SUPPLEMENT PROVIDES NEW AND ADDITIONAL
INFORMATION BEYOND THAT CONTAINED IN THE PROSPECTUS AND SHOULD BE RETAINED AND
READ IN CONJUNCTION WITH SUCH PROSPECTUS.

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

At a Special Meeting of Shareholders of Stepstone Funds (the "Trust") held on
March 7, 1996, Shareholders approved new investment advisory and subadvisory
agreements in connection with a merger among Union Bank, the Trust's current
investment advisor, The Bank of California, N.A. and BanCal Tri-State
Corporation which will take effect on or about April 1, 1996.  After the
merger, the resulting entity, Union Bank of California, N.A., will serve as
Advisor to each of the Trust's Funds and Bank of Tokyo-Mitsubishi Trust Company
will serve as SubAdvisor to the Government Securities and Convertible
Securities Funds.  In connection with this merger, all references in this
prospectus to Union Capital Advisors as Advisor to the Trust are hereby
replaced with Union Bank of California, N.A.  In addition, the final paragraph
of "The Advisor" section on pages 9 and 10 of the prospectus is deleted and the
third, fourth, fifth and sixth paragraphs are replaced with the following
language:

         For the fiscal year ended January 31, 1996, Union Bank, as predecessor
         to the Advisor, was paid an advisory fee of .50%, .50% and .60% of the
         average daily net assets of the Intermediate-Term Bond Fund,
         Government Securities Fund and Convertible Securities Fund,
         respectively.

         Merus-UCA Capital Management ("Merus"), 445 S. Figueroa Street, Los
         Angeles, California 90071, which operates as a separate division of
         Union Bank of California, N.A., manages the day-to-day operations of
         each Fund.  On April 1, 1996, the former Union Bank merged with the
         Bank of California, and the resulting bank changed its name to Union
         Bank of California, N.A.  Each of the former banks or its predecessor
         bank had been in banking since the early 1900's, and each historically
         has had significant investment functions within their Trust and
         Investment Divisions.  At the same time, the banks' asset management
         divisions were combined to form Merus.  Union Bank of California, N.A.
         is a subsidiary of Bank of Tokyo-Mitsubishi, Ltd., Tokyo.

         James V. Atkinson has served as team leader of the Intermediate-Term
         Bond Fund since 1991.  Mr. Atkinson is a Vice President of the Advisor
         and has been with the Advisor and its predecessor since 1991.  Mr.
         Atkinson was a portfolio manager at The Boston Company from 1988 to
         1990.

         As of April 1, 1996, Merus managed approximately $12 billion in
         individual portfolios and collective funds.  Merus' clients range from
         pension funds, national labor union plans and foundations to personal
         investments and trust portfolios.


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





<PAGE>   10
Effective March, 1996, Harold C. Elliot no longer serves as portfolio manager
to the Convertible Securities Fund.  As of this date, the day-to-day management
of the Convertible Securities Fund's investments is the responsibility of a
committee of investment professionals.  As a result of this change and the
aforementioned merger, "The SubAdvisor" section on page 10 is replaced with the
following language:

         The Advisor and Bank of Tokyo-Mitsubishi Trust Company (the
         SubAdvisor") have entered into an investment subadvisory agreement
         relating to the Government Securities and Convertible Securities Funds
         (the "Investment SubAdvisory Agreement").  Under the Investment
         SubAdvisory Agreement, the SubAdvisor makes the day-to-day investment
         decisions for the assets of the Government Securities and Convertible
         Securities Funds, subject to the supervision of, and policies
         established by, the Advisor and the Trustees of the Trust.  The
         Trust's shares are not sponsored, endorsed or guaranteed by and do not
         constitute obligations or deposits of the SubAdvisor and are not
         guaranteed by the FDIC or any other governmental agency.

         The SubAdvisor is entitled to a fee, which is calculated daily and
         paid monthly out of the Advisor's fee, at an annual rate of .20% of
         the average daily net assets of the Government Securities Fund and
         .30% of the average daily net assets of the Convertible Securities
         Fund.  For the fiscal year ended January 31, 1996, The Bank of Tokyo
         Trust Company, as predecessor to the SubAdvisor, received .20% and
         .30% of the average daily net assets of the Government Securities Fund
         and the Convertible Securities Fund, respectively.

         Bank of Tokyo-Mitsubishi Trust Company ("BOT-MTC"), headquartered at
         1251 Avenue of the Americas, New York, New York 10116 and with offices
         at 100 Broadway, New York, New York 10005, operates as a wholly-owned
         subsidiary of The Bank of Tokyo-Mitsubishi, Ltd. BOT-MTC was formed by
         the merger on April 1, 1996 between The Bank of Tokyo Trust Company, a
         wholly-owned subsidiary of The Bank of Tokyo, Ltd., and Mitsubishi
         Bank Trust Company of New York, a wholly-owned subsidiary of The
         Mitsubishi Bank, Limited.  The Bank of Tokyo Trust Company was the
         surviving entity, and changed its name to Bank of Tokyo-Mitsubishi
         Trust Company.  The parent companies merged on the same date.  Prior
         to the merger, the sub-advisory services were provided by The Bank of
         Tokyo Trust Company.  The Bank of Tokyo Trust Company was established
         in 1955 and has provided trust services since that time and management
         services since 1965.

         The SubAdvisor serves portfolio manager to bank common funds, employee
         benefit funds and personal trust accounts, managing assets in money
         market, equity and fixed income portfolios.

         As of April 1, 1996, Bank of Tokyo-Mitsubishi Trust Company managed
         $750 million in individual portfolios and collective funds.  In
         addition, Bank of Tokyo-Mitsubishi Trust Company also serves as
         SubAdvisor to the Trust's Emerging Growth and Blue Chip Growth Funds.

         Stephen W. Blocklin has served as portfolio manager of the Government
         Securities Fund since its inception.  Mr. Blocklin has been a Vice
         President with the SubAdvisor and its predecessor since December,
         1993.  From September, 1988 to December, 1993, he served as a senior
         fixed income fund manager in the institutional investment management
         group at First Fidelity Bancorporation.

         The day-to-day management of the Convertible Securities Fund's
         investments is the responsibility of a team of investment
         professionals.  Decisions are made by committee and no person has
         primary responsibility for making recommendations to the committee.


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


               PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE





                                      -2-
<PAGE>   11
                                STEPSTONE FUNDS

                         INTERMEDIATE - TERM BOND FUND
                           GOVERNMENT SECURITIES FUND

                       SUPPLEMENT DATED APRIL 1, 1996 TO
                          INVESTMENT CLASS PROSPECTUS
                               DATED JUNE 1, 1995

THIS SUPPLEMENT TO THE PROSPECTUS SUPERSEDES AND REPLACES ANY EXISTING
SUPPLEMENTS TO THE PROSPECTUS. THIS SUPPLEMENT PROVIDES NEW AND ADDITIONAL
INFORMATION BEYOND THAT CONTAINED IN THE PROSPECTUS AND SHOULD BE RETAINED AND
READ IN CONJUNCTION WITH SUCH PROSPECTUS.

Effective April 8, 1996, State Street Bank, 225 Franklin Street, Boston,
Massachusetts 02110, will serve as transfer agent for the Investment Class
Shares of the Intermediate-Term Bond Fund.

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

Effective as of February 15, 1996, the sales charge normally imposed on
purchases of the Intermediate - Term Bond and Government Securities Funds'
Investment Class Shares in the amount of $1,000,000 or more is waived.  Such
purchases shall be subject to a 1.00% contingent deferred sales charge payable
to the Distributor, however, if such shares are redeemed prior to one year from
the date of purchase.  Therefore, the sales charge table in the section
entitled "PURCHASE AND REDEMPTION OF SHARES" found on page 10 of the Prospectus
is replaced with the following:


<TABLE>
<CAPTION>
                                      SALES CHARGE             SALES CHARGE AS           COMMISSION AS
                                    AS A PERCENTAGE        APPROPRIATE PERCENTAGE         PERCENTAGE
 AMOUNT OF PURCHASE                 OF OFFERING PRICE      OF NET AMOUNT INVESTED      OF OFFERING PRICE
- ----------------------------------------------------------------------------------------------------------
 <S>                                     <C>                     <C>                         <C>
 $ 0- 24,999 . . . . . . . . . . .       3.00%                   3.09%                       2.70%
 $ 25,000-$49,999  . . . . . . . .       2.50%                   2.56%                       2.25%
 $ 50,000-$ 99,999 . . . . . . . .       2.00%                   2.04%                       1.80%
 $100,000-$249,999 . . . . . . . .       1.50%                   1.52%                       1.35%
 $250,000-$999,999 . . . . . . . .       1.00%                   1.01%                       0.90%
 $1,000,000-and Over . . . . . . .       0.00%*                  0.00%                       0.00%
</TABLE>
*   A contingent deferred sales charge of 1.00% will be charged if such
    Investment Class shares are redeemed prior to one year from date of
    purchase.

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

At a Special Meeting of Shareholders held on March 7, 1996, Shareholders
approved new investment advisory and subadvisory agreements in connection with
a merger among Union Bank, the Trust's current investment advisor, The Bank of
California, N.A. and BanCal Tri-State Corporation which will take effect on or
about April 1, 1996.  After the merger, the resulting entity, Union Bank of
California, N.A., will serve as Advisor to each of the Trust's Funds and Bank
of Tokyo-Mitsubishi Trust Company will serve as SubAdvisor to the Government
Securities Fund.  In connection with this merger, all references in this
prospectus to Union Capital Advisors as Advisor to the Trust are hereby
replaced with Union Bank of California, N.A.  In addition, the final paragraph
of "The Advisor" section on page 8 of the prospectus is deleted and the third,
fourth, fifth and sixth paragraphs are replaced with the following language:





<PAGE>   12
       For the fiscal year ended January 31, 1996, Union Bank, as predecessor
       to the Advisor, was paid an advisory fee of .50% of the average daily
       net assets of the Intermediate-Term Bond and Government Securities
       Funds.

       Merus-UCA Capital Management ("Merus"), 445 S. Figueroa Street, Los
       Angeles, California 90071, which operates as a separate division of
       Union Bank of California, N.A., manages the day-to-day operations of
       each Fund.  On April 1, 1996, the former Union Bank merged with the Bank
       of California, and the resulting bank changed its name to Union Bank of
       California, N.A.  Each of the former banks or its predecessor bank had
       been in banking since the early 1900's, and each historically has had
       significant investment functions within their Trust and Investment
       Divisions.  At the same time, the banks' asset management divisions were
       combined to form Merus.  Union Bank of California, N.A. is a subsidiary
       of Bank of Tokyo-Mitsubishi, Ltd., Tokyo.

       James V. Atkinson has served as team leader of the Intermediate-Term
       Bond Fund since 1991.  Mr. Atkinson is a Vice President of the Advisor
       and has been of the Advisor and its predecessor since 1991.  Mr.
       Atkinson was a portfolio manager at The Boston Company from 1988 to
       1990.

       As of April 1, 1996, Merus managed approximately $12 billion in
       individual portfolios and collective funds.  Merus' clients range from
       pension funds, national labor union plans and foundations to personal
       investments and trust portfolios.

"The SubAdvisor section on pages 8 and 9 of the prospectus is replaced with the
following language:

       The Advisor and Bank of Tokyo-Mitsubishi Trust Company (the SubAdvisor")
       have entered into an investment subadvisory agreement relating to the
       Government Securities Fund (the "Investment SubAdvisory Agreement").
       Under the Investment SubAdvisory Agreement, the SubAdvisor makes the
       day-to-day investment decisions for the assets of the Government
       Securities Fund, subject to the supervision of, and policies established
       by, the Advisor and the Trustees of the Trust.  The Trust's shares are
       not sponsored, endorsed or guaranteed by and do not constitute
       obligations or deposits of the SubAdvisor and are not guaranteed by the
       FDIC or any other governmental agency.

       The SubAdvisor is entitled to a fee, which is calculated daily and paid
       monthly out of the Advisor's fee, at an annual rate of .20% of the
       average daily net assets of the Government Securities Fund.  For the
       fiscal year ended January 31, 1996, The Bank of Tokyo Trust Company, as
       predecessor to the SubAdvisor, received .20% of the average daily net
       assets of the Government Securities Fund.

       Bank of Tokyo-Mitsubishi Trust Company ("BOT-MTC"), headquartered at
       1251 Avenue of the Americas, New York, New York 10116 and with offices
       at 100 Broadway, New York, New York 10005, operates as a wholly-owned
       subsidiary of The Bank of Tokyo-Mitsubishi, Ltd. BOT-MTC was formed by
       the merger on April 1, 1996 between The Bank of Tokyo Trust Company, a
       wholly-owned subsidiary of The Bank of Tokyo, Ltd., and Mitsubishi Bank
       Trust Company of New York, a wholly-owned subsidiary of The Mitsubishi
       Bank, Limited.

       The Bank of Tokyo Trust Company was the surviving entity, and changed
       its name to Bank of Tokyo-Mitsubishi Trust Company.  The parent
       companies merged on the same date.  Prior to the merger, the subadvisory
       services were provided by The Bank of Tokyo Trust Company.  The Bank of
       Tokyo Trust Company was established in 1955 and has provided trust
       services since that time and management services since 1965.

       The SubAdvisor serves as portfolio manager to bank common funds,
       employee benefit funds and personal trust accounts, managing assets in
       money market, equity and fixed income portfolios.

       As of April 1, 1996, Bank of Tokyo-Mitsubishi Trust Company managed $750
       million in individual portfolios and collective funds.  In addition,
       Bank of Tokyo-Mitsubishi Trust Company also serves as SubAdvisor to the
       Trust's Emerging Growth, Blue Chip Growth and Convertible Securities
       Funds.





                                      -2-
<PAGE>   13
       Stephen W. Blocklin has served as portfolio manager of the Government
       Securities Fund since its inception.  Mr. Blocklin has been a Vice
       President with the SubAdvisor and its predecessor since December, 1993.
       From September, 1988 to December, 1993, he served as a senior fixed
       income fund manager in the institutional investment management group at
       First Fidelity Bancorporation.


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


               PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE





                                      -3-
<PAGE>   14
                                STEPSTONE FUNDS

                          CONVERTIBLE SECURITIES FUND

                       SUPPLEMENT DATED APRIL 1, 1996 TO
                          INVESTMENT CLASS PROSPECTUS
                               DATED JUNE 1, 1995


THIS SUPPLEMENT TO THE PROSPECTUS SUPERSEDES AND REPLACES ANY EXISTING
SUPPLEMENTS TO THE PROSPECTUS.  THIS SUPPLEMENT PROVIDES NEW AND ADDITIONAL
INFORMATION BEYOND THAT CONTAINED IN THE PROSPECTUS AND SHOULD BE RETAINED AND
READ IN CONJUNCTION WITH SUCH PROSPECTUS.

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

At a Special Meeting of Shareholders of Stepstone Funds (the "Trust") held on
March 7, 1996, Shareholders approved new investment advisory and subadvisory
agreements in connection with a merger among Union Bank, the Trust's current
investment advisor, The Bank of California, N.A. and BanCal Tri-State
Corporation Bank which will take effect on or about April 1, 1996.  After the
merger, the resulting entity, Union Bank of California, N.A., will serve as
Advisor to each of the Trust's Funds and Bank of Tokyo-Mitsubishi Trust Company
will serve as SubAdvisor to the Convertible Securities Fund.  In connection
with this merger, all references in this prospectus to Union Capital Advisors
as Advisor to the Trust are hereby replaced with Union Bank of California, N.A.
In addition, the final paragraph of "The Advisor" section on pages 6 and 7 of
the prospectus is deleted and the third, fourth and fifth paragraphs are
replaced with the following language:

       For the fiscal year ended January 31, 1996, Union Bank, as predecessor
       to the Advisor, received .60% of the average daily net assets of the
       Fund.

       Merus-UCA Capital Management ("Merus"), 445 S. Figueroa Street, Los
       Angeles, California 90071, which operates as a separate division of
       Union Bank of California, N.A., manages the day-to-day operations of the
       Fund.  On April 1, 1996, the former Union Bank merged with the Bank of
       California, and the resulting bank changed its name to Union Bank of
       California, N.A.  Each of the former banks or its predecessor bank had
       been in banking since the early 1900's, and each historically has had
       significant investment functions within their Trust and Investment
       Divisions.  At the same time, the banks' asset management divisions were
       combined to form Merus.  Union Bank of California, N.A. is a subsidiary
       of Bank of Tokyo-Mitsubishi, Ltd., Tokyo.

       As of April 1, 1996, Merus managed approximately $12 billion in
       individual portfolios and collective funds.  Merus' clients range from
       pension funds, national labor union plans and foundations to personal
       investments and trust portfolios.

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

Effective March, 1996, Harold C. Elliot no longer serves as portfolio manager
to the Convertible Securities Fund.  As of this date the day-to-day management
of the Convertible Securities Fund's investments is the responsibility of a
committee of investment professionals.  As a result of this change and the
aforementioned merger, "The SubAdvisor" section on page 10 is replaced with the
following language:

       The Advisor and Bank of Tokyo-Mitsubishi Trust Company (the SubAdvisor")
       have entered into an investment subadvisory agreement relating to the
       Convertible Securities Fund (the "Investment SubAdvisory Agreement").
       Under the Investment SubAdvisory Agreement, the SubAdvisor makes
<PAGE>   15
       the investment decisions for the assets of the Fund, subject to the
       supervision of, and policies established by, the Advisor and the
       Trustees of the Trust.  The Trust's shares are not sponsored, endorsed
       or guaranteed by and do not constitute obligations or deposits of the
       SubAdvisor and are not guaranteed by the FDIC or any other governmental
       agency.

       The SubAdvisor is entitled to a fee, which is calculated daily and paid
       monthly out of the Advisor's fee, at an annual rate of .30% of the
       average daily net assets of the Fund.  For the fiscal year ended January
       31, 1996, The Bank of Tokyo Trust Company, as predecessor to the
       SubAdvisor, received .30% of the average daily net assets of the Fund.

       Bank of Tokyo-Mitsubishi Trust Company ("BOT-MTC"), headquartered at
       1251 Avenue of the Americas, New York, New York 10116 and with offices
       at 100 Broadway, New York, New York 10005, operates as a wholly-owned
       subsidiary of The Bank of Tokyo-Mitsubishi, Ltd. BOT-MTC was formed by
       the merger on April 1, 1996 between The Bank of Tokyo Trust Company, a
       wholly-owned subsidiary of The Bank of Tokyo, Ltd., and Mitsubishi Bank
       Trust Company of New York, a wholly-owned subsidiary of The Mitsubishi
       Bank, Limited.  The Bank of Tokyo Trust Company was the surviving
       entity, and changed its name to Bank of Tokyo-Mitsubishi Trust Company.
       The parent companies merged on the same date.  Prior to the merger, the
       sub-advisory services were provided by The Bank of Tokyo Trust Company.
       The Bank of Tokyo Trust Company was established in 1955 and has provided
       trust services since that time and management services since 1965.

       The SubAdvisor serves portfolio manager to bank common funds, employee
       benefit funds and personal trust accounts, managing assets in money
       market, equity and fixed income portfolios.

       As of April 1, 1996, Bank of Tokyo-Mitsubishi Trust Company managed $750
       million in individual portfolios and collective funds.  In addition,
       Bank of Tokyo-Mitsubishi Trust Company also serves as SubAdvisor to the
       Trust's Government Securities, Emerging Growth and Blue Chip Growth
       Funds.

       The day-to-day management of the Convertible Securities Fund's
       investments is the responsibility of a team of investment professionals.
       Decisions are made by committee and no person has primary responsibility
       for making recommendations to the committee.

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

               PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE





                                      -2-
<PAGE>   16
                                STEPSTONE FUNDS

                        LIMITED MATURITY GOVERNMENT FUND

                       SUPPLEMENT DATED APRIL 1, 1996 TO
                         INSTITUTIONAL CLASS PROSPECTUS
                               DATED JUNE 1, 1995


THIS SUPPLEMENT TO THE PROSPECTUS SUPERSEDES AND REPLACES ANY EXISTING
SUPPLEMENTS TO THE PROSPECTUS.  THIS SUPPLEMENT PROVIDES NEW AND ADDITIONAL
INFORMATION BEYOND THAT CONTAINED IN THE PROSPECTUS AND SHOULD BE RETAINED AND
READ IN CONJUNCTION WITH SUCH PROSPECTUS.

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

At a Special Meeting of Shareholders of Stepstone Funds (the "Trust") held on
March 7, 1996, Shareholders approved new investment advisory and subadvisory
agreements in connection with a merger among Union Bank, the Trust's current
investment advisor, The Bank of California, N.A. and BanCal Tri-State
Corporation which will take effect on or about April 1, 1996.  After the
merger, the resulting entity, Union Bank of California, N.A., will serve as
Advisor to each of the Trust's Funds.  In connection with this merger, all
references in this prospectus to Union Capital Advisors as Advisor to the Trust
are hereby replaced with Union Bank of California, N.A.  In addition, the final
paragraph of "The Advisor" section on page 8 of the prospectus is deleted and
the third, fourth, fifth and sixth paragraphs are replaced with the following
language:

       For the fiscal year ended January 31, 1996, Union Bank, as predecessor
       to the Advisor, was paid an advisory fee of .30% of the average daily
       net assets of the Fund.

       Merus-UCA Capital Management ("Merus"), 445 S. Figueroa Street, Los
       Angeles, California 90071, which operates as a separate division of
       Union Bank of California, N.A., manages the day-to-day operations of the
       Fund.  On April 1, 1996, the former Union Bank merged with the Bank of
       California, and the resulting bank changed its name to Union Bank of
       California, N.A.  Each of the former banks or its predecessor bank had
       been in banking since the early 1900's, and each historically has had
       significant investment functions within their Trust and Investment
       Divisions.  At the same time, the banks' asset management divisions were
       combined to form Merus.  Union Bank of California, N.A. is a subsidiary
       of Bank of Tokyo-Mitsubishi, Ltd., Tokyo.

       Martin Standish has served as team leader of the Fund since its
       inception.  Mr. Standish is a Vice President of the Advisor and has been
       with the Advisor since June, 1992.  Prior to his employment with the
       Advisor, he served as a portfolio manager at Patterson Capital from
       November, 1991 to June, 1992 and at Pacific Century Advisor from
       February, 1990 to November, 1991.  He earned his M.B.A. at the
       University of Texas at Dallas from 1989 to 1991, and has a B.S. in
       Finance from Colorado State University.

       As of April 1, 1996, Merus managed approximately $12 billion in
       individual portfolios and collective funds.  Merus' clients range from
       pension funds, national labor union plans and foundations to personal
       investments and trust portfolios.

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

               PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE
<PAGE>   17
                                STEPSTONE FUNDS

                        LIMITED MATURITY GOVERNMENT FUND

                       SUPPLEMENT DATED APRIL 1, 1996 TO
                          INVESTMENT CLASS PROSPECTUS
                               DATED JUNE 1, 1995


THIS SUPPLEMENT TO THE PROSPECTUS SUPERSEDES AND REPLACES ANY EXISTING
SUPPLEMENTS TO THE PROSPECTUS.  THIS SUPPLEMENT PROVIDES NEW AND ADDITIONAL
INFORMATION BEYOND THAT CONTAINED IN THE PROSPECTUS AND SHOULD BE RETAINED AND
READ IN CONJUNCTION WITH SUCH PROSPECTUS.

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

Effective April 8, 1996, State Street Bank, 225 Franklin Street, Boston,
Massachusetts 02110, will serve as transfer agent for the Investment Class
Shares of the Limited Maturity Government Fund.

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

Effective March 8, 1996 the Trust is reinstating the maximum sales charge of
1.25% on the sale of shares of Limited Maturity Government Fund (the "Fund"),
therefore the following should be read in conjunction with Shareholder
Transaction Expenses located on page 3 of the Prospectus:

<TABLE>
<S>                                                                        <C>
Maximum Sales Charge Imposed on Purchase  . . . . . . . . . . . . . . . . .1.50%
</TABLE>

The following replaces the Example also located on page 3 of the Prospectus:
<TABLE>
 <S>                                                    <C>       <C>       <C>       <C>
                                                        1 yr      3 yrs     5 yrs     10 yrs
 An investor would pay the following expenses on a
 $1,000 investment assuming (1) imposition of the
 maximum sales load; (2) 5% annual return and (3)
 redemption at the end of each time period              20        32        44        80
</TABLE>

The following information should be read in conjunction with the section of the
Prospectus entitled "Purchase and Redemption of Shares" located on page 9:

The following table shows the regular sales charge on Investment Class shares
to a "single purchaser" (described below) together with the dealer discount
paid to dealers and the agency commission paid to brokers (collectively the
"commission"):

<TABLE>
<CAPTION>
                                                  SALES CHARGE AS
                      SALES CHARGE AS A           APPROPRIATE PERCENTAGE     COMMISSION AS
 AMOUNT OF            PERCENTAGE OF OFFERING      OF NET AMOUNT              PERCENTAGE OF OFFERING
 PURCHASE             PRICE                       INVESTED                   PRICE

 <S>                     <C>                         <C>                        <C>
 $0-$99,999              1.50%                       1.52%                      1.35%

 $100,000-
  $249,999               1.00%                       1.01%                       .90%

 $250,000-
  $499,999                .75%                        .76%                      .675%
 $500,000-
  $999,999                .50%                        .50%                       .45%

 *$1,000,000
  and Over                .00%*                       .00%                       .00%
</TABLE>
<PAGE>   18


- -----------------
*A contingent deferred sales charge of .30% will be charged if such investment
Class shares are redeemed prior to one year from date of purchase.

The commissions shown in the table apply to sales through authorized dealers
and brokers.  Under certain circumstances, the Distributor may use its own
funds to compensate financial institutions and intermediaries in amounts that
are additional to the commissions shown above.  In addition, the Distributor
may, from time to time and at its own expense, provide promotional incentives
in the form of cash or other compensation to certain financial institutions and
intermediaries whose registered representatives have sold or are expected to
sell significant amounts of the Investment Class shares of the Fund.  Such
other compensation may take the form of payments for travel expenses, including
lodging, incurred in connection with trips taken by qualifying registered
representatives to places within or without the United States.  Under certain
circumstances, commissions up to the amount of the entire sales charge may be
reallowed to dealers of brokers, who might then be deemed to be "underwriters"
under the Securities Act of 1933.  Commission rates may vary among the Funds.

In calculating the sales charge rates applicable to current purchases of a
Fund's shares, a "single purchaser" is entitled to cumulate current purchases
with the net purchases of previously purchased shares of the Fund and other of
the Trust's funds (the "Eligible Funds") which are sold subject to a comparable
sales charge.

The term "single purchaser" refers to (i) an individual, (ii) an individual and
spouse purchasing shares of the Fund for their own account or for trust or
custodial accounts for their minor children, or (iii) a fiduciary purchasing
for any one trust, estate or fiduciary account, including employee benefit
plans created under Sections 401, 403(b) or 457 of the Internal Revenue Code of
1986, as amended (the "Code"), including related plans of the same employer.
To be entitled to reduced sales charge based upon shares already owned, the
Investor must ask the Distributor for such entitlement at the time of purchase
and provide the account number(s) of the investor, the investor and spouse, and
their minor children, and give the age of such children.  The Fund may amend or
terminate this right of accumulation at any time as to subsequent purchases.

LETTER OF INTENT.  By submitting a Letter of Intent (the "Letter") to the
Distributor, a "single purchaser" may purchase shares of the Fund and the other
Eligible Funds during a 13 month period at the reduced sales charge rates
applying to the aggregate amount of the intended purchases stated in the
Letter.  The Letter may apply to purchases made up to 90 days before the date
of the Letter.  To receive credit for such prior purchases and later purchases
benefitting from the Letter, the Shareholder must notify the Transfer Agent at
the time the Letter is submitted that there are prior purchases that may apply,
and, at the time of later purchases, notify the Transfer Agent that such
purchases are applicable under the Letter.

OTHER CIRCUMSTANCES.  No sales charge is imposed on Investment Class shares of
the Fund:  (i) issued in plans of reorganization, such as mergers, asset
acquisitions and exchange offers, to which the Trust is a party; (ii) sold to
dealers or brokers that have a sales agreement with the Distributor, for their
own account or for retirement plans for their employees or sold to employees
(and their spouse) of dealers or brokers that certify to the Distributor at a
time of purchase that such purchase is for their own account (or for the
benefit of such employees' minor children); (iii) in aggregate purchases of $1
million or more by tax-exempt organizations enumerated in Section 501(c) of the
Code, or employee benefit plans created under Sections 401, 403(b) or 457 of
the Code; (iv) sold to employees and families of the Advisor and its
affiliates; or (v) all fiduciary accounts of the Advisor and its affiliates.


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

At a Special Meeting of Shareholders of Stepstone Funds (the "Trust") held on
March 7, 1996, Shareholders approved new investment advisory and sub-advisory
agreements in connection with a merger among Union Bank, the Trust's current
investment advisor, The Bank of California, N.A. and BanCal Tri-State
Corporation





                                      -2-
<PAGE>   19
which will take effect on or about April 1, 1996.  After the merger, the
resulting entity, Union Bank of California, N.A., will serve as Advisor to each
of the Trust's Funds.  In connection with this merger, all references in this
prospectus to Union Capital Advisors as Advisor to the Trust are hereby
replaced with Union Bank of California, N.A.  In addition, the final paragraph
of "The Advisor" section on page 8 of the prospectus is deleted and the third,
fourth, fifth and sixth paragraphs are replaced with the following language:

       For the fiscal year ended January 31, 1996, Union Bank, as predecessor
       to the Advisor, was paid an advisory fee of .30% of the average daily
       net assets of the Fund.

       Merus-UCA Capital Management ("Merus"), 445 S. Figueroa Street, Los
       Angeles, California 90071, which operates as a separate division of
       Union Bank of California, N.A., manages the day-to-day operations of the
       Fund.  On April 1, 1996, the former Union Bank merged with the Bank of
       California, and the resulting bank changed its name to Union Bank of
       California, N.A.  Each of the former banks or its predecessor bank had
       been in banking since the early 1900's, and each historically has had
       significant investment functions within their Trust and Investment
       Divisions.  At the same time, the banks' asset management divisions were
       combined to form Merus.  Union Bank of California, N.A. is a subsidiary
       of Bank of Tokyo-Mitsubishi, Ltd., Tokyo.

       Martin Standish has served as team leader of the Fund since its
       inception.  Mr. Standish is a Vice President of the Advisor and has been
       with the Advisor since June, 1992.  Prior to his employment with the
       Advisor, he served as a portfolio manager at Patterson Capital from
       November, 1991 to June, 1992 and at Pacific Century Advisor from
       February, 1990 to November, 1991.  He earned his M.B.A. at the
       University of Texas at Dallas from 1989 to 1991 and has a B.S. in
       Finance from Colorado State University.

       As of April 1, 1996, Merus managed approximately $12 billion in
       individual portfolios and collective funds.  Merus' clients range from
       pension funds, national labor union plans and foundations to personal
       investments and trust portfolios.

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


               PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE





                                      -3-
<PAGE>   20
                                STEPSTONE FUNDS

                               MONEY MARKET FUND
                           TREASURY MONEY MARKET FUND
                     CALIFORNIA TAX-FREE MONEY MARKET FUND

                       SUPPLEMENT DATED APRIL 1, 1996 TO
                         INSTITUTIONAL CLASS PROSPECTUS
                               DATED JUNE 1, 1995


This supplement to the prospectus supersedes and replaces any existing
supplements to the prospectus.  This supplement provides new and additional
information beyond that contained in the prospectus and should be retained and
read in conjunction with such prospectus.

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

At a Special Meeting of Shareholders of Stepstone Funds (the "Trust") held on
March 7, 1996, Shareholders approved new investment advisory and subadvisory
agreements in connection with a merger among Union Bank, the Trust's current
investment advisor, The Bank of California, N.A. and BanCal Tri-State
Corporation which will take effect on or about April 1, 1996.  After the
merger, the resulting entity, Union Bank of California, N.A., will serve as
Advisor to each of the Trust's Funds.  In connection with this merger, all
references in this prospectus to Union Capital Advisors as Advisor to the Trust
are hereby replaced with Union Bank of California, N.A.  In addition, the final
paragraph of "The Advisor" section on page 9 of the prospectus is deleted and
the third, fourth and fifth paragraphs are replaced with the following
language:

       For the fiscal year ended January 31, 1996, Union Bank, as predecessor
       to the Advisor, was paid an advisory fee of .30%, .25% and .10% of the
       average daily net assets of the Money Market, Treasury Money Market and
       California Tax-Free Money Market Funds, respectively.

       Merus-UCA Capital Management ("Merus"), 445 S. Figueroa Street, Los
       Angeles, California 90071, which operates as a separate division of
       Union Bank of California, N.A., manages the day-to-day operations of
       each Fund.  On April 1, 1996, the former Union Bank merged with the Bank
       of California, and the resulting bank changed its name to Union Bank of
       California, N.A.  Each of the former banks or its predecessor bank had
       been in banking since the early 1900's, and each historically has had
       significant investment functions within their Trust and Investment
       Divisions.  At the same time, the banks' asset management divisions were
       combined to form Merus. Union Bank of California, N.A. is a subsidiary
       of Bank of Tokyo-Mitsubishi, Ltd., Tokyo.

       As of April 1, 1996, Merus managed approximately $12 billion in
       individual portfolios and collective funds.  Merus' clients range from
       pension funds, national labor union plans and foundations to personal
       investments and trust portfolios.


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



               PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE





<PAGE>   21
                                STEPSTONE FUNDS

                               MONEY MARKET FUND
                           TREASURY MONEY MARKET FUND
                     CALIFORNIA TAX-FREE MONEY MARKET FUND

                       SUPPLEMENT DATED APRIL 1, 1996 TO
                          INVESTMENT CLASS PROSPECTUS
                               DATED JUNE 1, 1995


THIS SUPPLEMENT TO THE PROSPECTUS SUPERSEDES AND REPLACES ANY EXISTING
SUPPLEMENTS TO THE PROSPECTUS.  THIS SUPPLEMENT PROVIDES NEW AND ADDITIONAL
INFORMATION BEYOND THAT CONTAINED IN THE PROSPECTUS AND SHOULD BE RETAINED AND
READ IN CONJUNCTION WITH SUCH PROSPECTUS.

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

Effective April 8, 1996, State Street Bank, 225 Franklin Street, Boston,
Massachusetts 02110, will serve as transfer agent for the Investment Class
Shares of the Treasury Money Market, Money Market and California Tax-Free Money
Market Funds.

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

At a Special Meeting of Shareholders of Stepstone Funds (the "Trust") held on
March 7, 1996, Shareholders approved new investment advisory and subadvisory
agreements in connection with a merger among Union Bank, the Trust's current
investment advisor, The Bank of California, N.A. and BanCal Tri-State
Corporation which will take effect on or about April 1, 1996.  After the
merger, the resulting entity, Union Bank of California, N.A., will serve as
Advisor to each of the Trust's Funds.  In connection with this merger, all
references in this prospectus to Union Capital Advisors as Advisor to the Trust
are hereby replaced with Union Bank of California, N.A.  In addition, the final
paragraph of "The Advisor" section on page 9 of the prospectus is deleted and
the third, fourth and fifth paragraphs are replaced with the following
language:

       For the fiscal year ended January 31, 1996, the Money Market, Treasury
       Money Market and California Tax-Free Money Market Funds paid Union Bank,
       as predecessor to the Advisor, a fee of .30%, .25% and .10% of their
       average daily net assets.

       Merus-UCA Capital Management ("Merus"), 445 S. Figueroa Street, Los
       Angeles, California 90071, which operates as a separate division of
       Union Bank of California, N.A., manages the day-to-day operations of
       each Fund.  On April 1, 1996, the former Union Bank merged with the Bank
       of California, and the resulting bank changed its name to Union Bank of
       California, N.A.  Each of the former banks or its predecessor bank had
       been in banking since the early 1900's, and each historically has had
       significant investment functions within their Trust and Investment
       Divisions.  At the same time, the banks' asset management divisions were
       combined to form Merus.  Union Bank of California, N.A. is a subsidiary
       of Bank of Tokyo-Mitsubishi, Ltd., Tokyo.

       As of April 1, 1996, Merus managed approximately $12 billion in
       individual portfolios and collective funds.  Merus' clients range from
       pension funds, national labor union plans and foundations to personal
       investments and trust portfolios.

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

               PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE





<PAGE>   22
                                STEPSTONE FUNDS

                               MONEY MARKET FUND
                           TREASURY MONEY MARKET FUND

                       SUPPLEMENT DATED APRIL 1, 1996 TO
                          CASH SWEEP CLASS PROSPECTUS
                             DATED JANUARY 14, 1996


THIS SUPPLEMENT TO THE PROSPECTUS SUPERSEDES AND REPLACES ANY EXISTING
SUPPLEMENTS TO THE PROSPECTUS.  THIS SUPPLEMENT PROVIDES NEW AND ADDITIONAL
INFORMATION BEYOND THAT CONTAINED IN THE PROSPECTUS AND SHOULD BE RETAINED AND
READ IN CONJUNCTION WITH SUCH PROSPECTUS.

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

At a Special Meeting of Shareholders of Stepstone Funds (the "Trust") held on
March 7, 1996, Shareholders approved new investment advisory and subadvisory
agreements in connection with a merger among Union Bank, the Trust's current
investment advisor, The Bank of California, N.A. and BanCal Tri-State
Corporation which will take effect on or about April 1, 1996.  After the
merger, the resulting entity, Union Bank of California, N.A., will serve as
Advisor to each of the Trust's Funds.  In connection with this merger, all
references in this prospectus to Union Capital Advisors as Advisor to the Trust
are hereby replaced with Union Bank of California, N.A.  In addition, the final
paragraph of "The Advisor" section on page 7 of the prospectus is deleted and
the third, fourth and fifth paragraphs are replaced with the following
language:

       For the fiscal year ended January 31, 1996, the Money Market and
       Treasury Money Market Funds paid Union Bank, as predecessor to the
       Advisor, a fee of .30% and .25% of their average daily net assets.

       Merus-UCA Capital Management ("Merus"), 445 S. Figueroa Street, Los
       Angeles, California 90071, which operates as a separate division of
       Union Bank of California, N.A., manages the day-to-day operations of
       each Fund.  On April 1, 1996, the former Union Bank merged with the Bank
       of California, and the resulting bank changed its name to Union Bank of
       California, N.A.  Each of the former banks or its predecessor bank had
       been in banking since the early 1900's, and each historically has had
       significant investment functions within their Trust and Investment
       Divisions.  At the same time, the banks' asset management divisions were
       combined to form Merus.  Union Bank of California, N.A. is a subsidiary
       of Bank of Tokyo-Mitsubishi, Ltd., Tokyo.

       As of April 1, 1996, Merus managed approximately $12 billion in
       individual portfolios and collective funds.  Merus' clients range from
       pension funds, national labor union plans and foundations to personal
       investments and trust portfolios.


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




               PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE





<PAGE>   23
                                STEPSTONE FUNDS

                         CALIFORNIA TAX-FREE BOND FUND

                       SUPPLEMENT DATED APRIL 1, 1996 TO
                         INSTITUTIONAL CLASS PROSPECTUS
                               DATED JUNE 1, 1995


THIS SUPPLEMENT TO THE PROSPECTUS SUPERSEDES AND REPLACES ANY EXISTING
SUPPLEMENTS TO THE PROSPECTUS.  THIS SUPPLEMENT PROVIDES NEW AND ADDITIONAL
INFORMATION BEYOND THAT CONTAINED IN THE PROSPECTUS AND SHOULD BE RETAINED AND
READ IN CONJUNCTION WITH SUCH PROSPECTUS.

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

At a Special Meeting of Shareholders of Stepstone Funds (the "Trust") held on
March 7, 1996, Shareholders approved new investment advisory and subadvisory
agreements in connection with a merger among Union Bank, the Trust's current
investment advisor, The Bank of California, N.A. and BanCal Tri-State
Corporation which will take effect on or about April 1, 1996.  After the
merger, the resulting entity, Union Bank of California, N.A., will serve as
Advisor to each of the Trust's Funds.  In connection with this merger, all
references in this prospectus to Union Capital Advisors as Advisor to the Trust
are hereby replaced with Union Bank of California, N.A.  In addition, the final
paragraph of "The Advisor" section on pages 7 and 8 of the prospectus is
deleted and the third, fourth, fifth and sixth paragraphs are replaced with the
following language:

       For the fiscal year ended January 31, 1996, Union Bank, as predecessor
       to the Advisor, was paid an advisory fee of .03% of the average daily
       net assets of the Fund.

       Merus-UCA Capital Management ("Merus"), 445 S. Figueroa Street, Los
       Angeles, California 90071, which operates as a separate division of
       Union Bank of California, N.A., manages the day-to-day operations of the
       Fund.  On April 1, 1996, the former Union Bank merged with the Bank of
       California, and the resulting bank changed its name to Union Bank of
       California, N.A.  Each of the former banks or its predecessor bank had
       been in banking since the early 1900's, and each historically has had
       significant investment functions within their Trust and Investment
       Divisions.  At the same time, the banks' asset management divisions were
       combined to form Merus.  Union Bank of California, N.A. is a subsidiary
       of Bank of Tokyo-Mitsubishi, Ltd., Tokyo.

       Robert Bigelow has served as team leader of the Fund since October,
       1994.  Prior to joining the Advisor in June, 1994, Mr.  Bigelow served
       as a portfolio manager at City National Bank from January, 1986 to June,
       1994.

       As of April 1, 1996, Merus managed approximately $12 billion in
       individual portfolios and collective funds.  Merus' clients range from
       pension funds, national labor union plans and foundations to personal
       investments and trust portfolios.


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




               PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE





<PAGE>   24
                                STEPSTONE FUNDS

                         CALIFORNIA TAX-FREE BOND FUND

                       SUPPLEMENT DATED APRIL 1, 1996 TO
                          INVESTMENT CLASS PROSPECTUS
                               DATED JUNE 1, 1995


THIS SUPPLEMENT PROVIDES NEW AND ADDITIONAL INFORMATION BEYOND THAT CONTAINED
IN THE PROSPECTUS AND SHOULD BE RETAINED AND READ IN CONJUNCTION WITH SUCH
PROSPECTUS.

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

Effective April 8, 1996, State Street Bank, 225 Franklin Street, Boston,
Massachusetts 02110, will serve as transfer agent for the Investment Class
Shares of the California Tax-Free Bond Fund.


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

Effective as of February 15, 1996, the sales charge normally imposed on
purchases of the California Tax Free Bond Fund's Investment Class Shares in the
amount of $1,000,000 or more is waived.  Such purchases shall be subject to a
1.00% contingent deferred sales charge payable to the Distributor, however, if
such shares are redeemed prior to one year from the date of purchase.
Therefore, the sales charge table in the section entitled "PURCHASE AND
REDEMPTION OF SHARES" found on page 9 of the Prospectus is replaced with the
following:

<TABLE>
<CAPTION>
                                                                        SALES
                                         SALES                  CHARGE AS APPROPRIATE          COMMISSION
                                         CHARGE                      PERCENTAGE                    AS
                                         AS A PERCENTAGE               OF NET                  PERCENTAGE
 AMOUNT OF PURCHASE                      OF OFFERING PRICE         AMOUNT INVESTED          OF OFFERING PRICE
- --------------------------------------------------------------------------------------------------------------
 <S>                                        <C>                         <C>                         <C>
 $         0-99,999  . . . . . . . . .      3.00%                       3.09%                       2.70%
 $ 100,000-$249,999  . . . . . . . . .      2.50%                       2.56%                       2.25%
 $ 250,000-$499,999  . . . . . . . . .      2.00%                       2.04%                       1.80%
 $ 500,000-$999,999  . . . . . . . . .      1.50%                       1.52%                       1.35%
 $1,000,000-and Over . . . . . . . . .      0.00%*                      0.00%                       0.00%
</TABLE>


*   A contingent deferred sales charge of 1.00% will be charged if such
    Investment Class shares are redeemed prior to one year from date of
    purchase.

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

At a Special Meeting of Shareholders of Stepstone Funds (the "Trust") held on
March 7, 1996, Shareholders approved new investment advisory and subadvisory
agreements in connection with a merger among Union Bank, the Trust's current
investment advisor, The Bank of California, N.A. and BanCal Tri-State
Corporation which will take effect on or about April 1, 1996.  After the
merger, the resulting entity, Union Bank of California, N.A., will serve as
Advisor to each of the Trust's Funds.  In connection with this merger, all





<PAGE>   25
references in this prospectus to Union Capital Advisors as Advisor to the Trust
are hereby replaced with Union Bank of California, N.A.  In addition, the final
paragraph of "The Advisor" section on pages 7 and 8 of the prospectus is
deleted and the third, fourth, fifth and sixth paragraphs are replaced with the
following language:

       For the fiscal year ended January 31, 1996, Union Bank, as predecessor
       to the Advisor, was paid an advisory fee of .03% of the average daily
       net assets of the Fund.

       Merus-UCA Capital Management ("Merus"), 445 S. Figueroa Street, Los
       Angeles, California 90071, which operates as a separate division of
       Union Bank of California, N.A., manages the day-to-day operations of the
       Fund.  On April 1, 1996, the former Union Bank merged with the Bank of
       California, and the resulting bank changed its name to Union Bank of
       California, N.A.  Each of the former banks or its predecessor bank had
       been in banking since the early 1900's, and each historically has had
       significant investment functions within their Trust and Investment
       Divisions.  At the same time, the banks' asset management divisions were
       combined to form Merus.  Union Bank of California, N.A. is a subsidiary
       of Bank of Tokyo-Mitsubishi, Ltd., Tokyo.

       Robert Bigelow has served as team leader of the Fund since October,
       1994.  Prior to joining the Advisor in June, 1994, Mr.  Bigelow served
       as a portfolio manager at City National Bank from January, 1986 to June,
       1994.

       As of April 1, 1996, Merus managed approximately $12 billion in
       individual portfolios and collective funds.  Merus' clients range from
       pension funds, national labor union plans and foundations to personal
       investments and trust portfolios.


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



               PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE





                                      -2-
<PAGE>   26
                                STEPSTONE FUNDS

                           INTERNATIONAL EQUITY FUND

                       SUPPLEMENT DATED APRIL 1, 1996 TO
                         INSTITUTIONAL CLASS PROSPECTUS
                               DATED JUNE 1, 1995


THIS SUPPLEMENT TO THE PROSPECTUS SUPERSEDES AND REPLACES ANY EXISTING
SUPPLEMENTS TO THE PROSPECTUS.  THIS SUPPLEMENT PROVIDES NEW AND ADDITIONAL
INFORMATION BEYOND THAT CONTAINED IN THE PROSPECTUS AND SHOULD BE RETAINED AND
READ IN CONJUNCTION WITH SUCH PROSPECTUS.

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

At a Special Meeting of Shareholders of Stepstone Funds (the "Trust") held on
March 7, 1996, Shareholders approved new investment advisory and subadvisory
agreements in connection with a merger among Union Bank, the Trust's current
investment advisor, The Bank of California, N.A. and BanCal Tri-State
Corporation which will take effect on or about April 1, 1996.  After the
merger, the resulting entity, Union Bank of California, N.A., will serve as
Advisor to each of the Trust's Funds and Tokyo-Mitsubishi Asset Management
(U.K.) Limited will serve as SubAdvisor to the International Equity Fund.  In
connection with this merger, all references in this prospectus to Union Capital
Advisors as Advisor to the Trust are hereby replaced with Union Bank of
California, N.A.  In addition, the final paragraph of "The Advisor" section on
page 8 of the prospectus is deleted and the second, third and fourth paragraphs
are replaced with the following language:

       The Advisor is entitled to a fee, which is calculated daily and paid
       monthly, at an annual rate of .95% of the average daily net assets of
       the Fund.  Although the advisory fee paid by the Fund is higher than
       advisory fees paid by other mutual funds, the Trust believes that the
       fee is comparable to the advisory fee paid by many other mutual funds
       with similar investment objectives and policies.  The Advisor may from
       time to time waive all or a portion of its fee in order to limit the
       operating expenses of the Fund.  Any such waiver is voluntary, and may
       be terminated at any time in the Advisor's sole discretion.  For the
       fiscal year ended January 31, 1996, Union Bank, as predecessor to the
       Advisor, was paid an advisory fee of .85% of the average daily net
       assets of the Fund.

       Merus-UCA Capital Management ("Merus"), 445 S. Figueroa Street, Los
       Angeles, California 90071, which operates as a separate division of
       Union Bank of California, N.A., manages the day-to-day operations of the
       Fund.  On April 1, 1996, the former Union Bank merged with the Bank of
       California, and the resulting bank changed its name to Union Bank of
       California, N.A.  Each of the former banks or its predecessor bank had
       been in banking since the early 1900's, and each historically has had
       significant investment functions within their Trust and Investment
       Divisions.  At the same time, the banks' asset management divisions were
       combined to form Merus.  Union Bank of California, N.A. is a subsidiary
       of Bank of Tokyo-Mitsubishi, Ltd., Tokyo.

       As of April 1, 1996, Merus managed approximately $12 billion in
       individual portfolios and collective funds. Merus' clients range from
       pension funds, national labor union plans and foundations to personal
       investments and trust portfolios.

The first sentence of the first paragraph of "The SubAdvisor" section on page 8
of the prospectus is replaced with the following sentence:





<PAGE>   27
       The Advisor and Tokyo-Mitsubishi Asset Management (U.K.) Limited (the
       "SubAdvisor") have entered into an investment subadvisory agreement
       relating to the Fund (the "Investment SubAdvisory Agreement").

The third, fourth and fifth paragraphs of "The SubAdvisor" section on pages 8
and 9 of the prospectus are replaced with the following three paragraphs:

       Tokyo-Mitsubishi Asset Management (U.K.) Limited, 12-15 Finsbury Circus,
       London EC2 M7BT operates as a subsidiary of Bank of Tokyo, Ltd., Tokyo.
       Established in 1989, the SubAdvisor provides active global investment
       services for segregated funds and specialist fund management.

       Prior to February, 1995, the SubAdvisor had not previously served as the
       investment advisor to mutual funds.  As of April 1, 1996,
       Tokyo-Mitsubishi Asset Management (U.K.) Limited managed assets of $2.2
       billion in individual portfolios and collective funds.

       Andrew Richmond has served as portfolio manager of the Fund since its
       inception.  Mr. Richmond has been with the SubAdvisor and its
       predecessor since 1990 and has served as senior equity investment
       manager since June, 1992.


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


               PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE





                                      -2-
<PAGE>   28
                                STEPSTONE FUNDS
                           INTERNATIONAL EQUITY FUND

                       SUPPLEMENT DATED APRIL 1, 1996 TO
                          INVESTMENT CLASS PROSPECTUS
                               DATED JUNE 1, 1995


THIS SUPPLEMENT TO THE PROSPECTUS SUPERSEDES AND REPLACES ANY EXISTING
SUPPLEMENTS TO THE PROSPECTUS.  THIS SUPPLEMENT PROVIDES NEW AND ADDITIONAL
INFORMATION BEYOND THAT CONTAINED IN THE PROSPECTUS AND SHOULD BE RETAINED AND
READ IN CONJUNCTION WITH SUCH PROSPECTUS.

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

At a Special Meeting of Shareholders of Stepstone Funds (the "Trust") held on
March 7, 1996, Shareholders approved new investment advisory and subadvisory
agreements in connection with a merger among Union Bank, the Trust's current
investment advisor, The Bank of California, N.A. and BanCal Tri-State
Corporation which will take effect on or about April 1, 1996.  After the
merger, the resulting entity, Union Bank of California, N.A., will serve as
Advisor to each of the Trust's Funds and Tokyo-Mitsubishi Asset Management
(U.K.) Limited will serve as SubAdvisor to the International Equity Fund.  In
connection with this merger, all references in this prospectus to Union Capital
Advisors as Advisor to the Trust are hereby replaced with Union Bank of
California, N.A.  In addition, the final paragraph of "The Advisor" section on
page 7 of the prospectus is deleted and the third and fourth paragraphs are
replaced with the following language:

       Merus-UCA Capital Management ("Merus"), 445 S. Figueroa Street, Los
       Angeles, California 90071, which operates as a separate division of
       Union Bank of California, N.A., manages the day-to-day operations of the
       Fund.  On April 1, 1996, the former Union Bank merged with the Bank of
       California, and the resulting bank changed its name to Union Bank of
       California, N.A.  Each of the former banks or its predecessor bank had
       been in banking since the early 1900's, and each historically has had
       significant investment functions within their Trust and Investment
       Divisions.  At the same time, the banks' asset management divisions were
       combined to form Merus. Union Bank of California, N.A. is a subsidiary
       of Bank of Tokyo-Mitsubishi, Ltd., Tokyo.

       As of April 1, 1996, Merus managed approximately $12 billion in
       individual portfolios and collective funds. Merus' clients range from
       pension funds, national labor union plans and foundations to personal
       investments and trust portfolios.

The first sentence of the first paragraph of "The SubAdvisor" section on page 7
of the prospectus is replaced with the following sentence:

       The Advisor and Tokyo-Mitsubishi Asset Management (U.K.) Limited (the
       "SubAdvisor") have entered into an investment subadvisory agreement
       relating to the Fund (the "Investment SubAdvisory Agreement").

The third, fourth and fifth paragraphs of "The SubAdvisor" section on page 7 of
the prospectus are replaced with the following three paragraphs:

       Tokyo-Mitsubishi Asset Management (U.K.) Limited, 12-15 Finsbury Circus,
       London EC2 M7BT operates as a subsidiary of Bank of Tokyo, Ltd., Tokyo.
       Established in 1989, the SubAdvisor provides active global investment
       services for segregated funds and specialist fund management.





<PAGE>   29
       Prior to February, 1995, the SubAdvisor had not previously served as the
       investment advisor to mutual funds.  As of April 1, 1996,
       Tokyo-Mitsubishi Asset Management (U.K.) Limited managed assets of $2.2
       billion in individual portfolios and collective funds.

       Andrew Richmond has served as portfolio manager of the Fund since its
       inception.  Mr. Richmond has been with the SubAdvisor and its
       predecessor since 1990 and has served as senior equity investment
       manager since June, 1992.


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



               PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE





                                      -2-


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