WM TRUST II
485APOS, 1998-12-31
Previous: LOEWEN GROUP INC, 10-Q/A, 1998-12-31
Next: ENDEAVOR SERIES TRUST, 497, 1998-12-31



<PAGE>   1
   

   As filed with the Securities and Exchange Commission on December 31, 1998

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                     Securities Act of 1933 File #33-27489
                 Investment Company Act of 1940 File #811-5775
                                   FORM N-1A

           REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 X
                                                                   -
                          Pre-Effective Amendment No.

                        Post-Effective Amendment No. 30

       REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 X
                                                                       -

                                Amendment No. 33

                                  WM Trust II

               (Exact name of Registrant as specified in Charter)

                                      And

                     Securities Act of 1933 File #333-01999
                 Investment Company Act of 1940 File #811-07577
                                   FORM N-1A

                REGISTRATION UNDER THE SECURITIES ACT OF 1933 X
                                                              -

                          Pre-Effective Amendment No.

                         Post-Effective Amendment No. 6

       REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 X
                                                                       -

                                Amendment No. 8

                    WM Strategic Asset Management Portfolios

               (Exact name of Registrant as specified in Charter)

                1201 Third Avenue, Suite 1400, Seattle, WA 98101

                    (Address of principal executive offices)

       Registrant's telephone number, including area code (206) 461-3800

                                  John T. West
                1201 Third Avenue, Suite 1400, Seattle, WA 98101
                     (Name and address of agent for service)

With a copy to:

Joseph B. Kittredge, Esq.
Ropes & Gray
One International Place
Boston, MA 02110

It is proposed that this filing will become effective:

____ immediately upon filing pursuant to paragraph (b) of Rule 48 
     
____ on (date) pursuant to paragraph (b) of Rule 485

  X   
____ 60 days after filing pursuant to paragraph (a)(i) of Rule 485
 
____ on (date) pursuant to paragraph (a)(i) of Rule 485
 
____ 75 days after filing pursuant to paragraph (a)(ii) of Rule 485
 
____ on (date) pursuant to paragraph (a)(ii) of Rule 485
 
____ this post-effective amendment designated a new effective date for a 
     previously filed post-effective amendment.

    

<PAGE>   2
   

                                                                      PROSPECTUS
                                                                   March 1, 1999

                                WM GROUP OF FUNDS

                                  MONEY FUNDS
                                Money Market Fund 
                          Tax-Exempt Money Market Fund
                              California Money Fund

                               FIXED-INCOME FUNDS

                        Short Term High Quality Bond Fund
                            Target Maturity 2002 Fund
                         U.S. Government Securities Fund
                                   Income Fund
                                 High Yield Fund

                                 MUNICIPAL FUNDS
                              Tax-Exempt Bond Fund
                            California Municipal Fund
                 California Insured Intermediate Municipal Fund
                         Florida Insured Municipal Fund


                                  EQUITY FUNDS
                                Bond & Stock Fund
                              Growth & Income Fund
                                 Northwest Fund
                                   Growth Fund
                              Emerging Growth Fund
                            International Growth Fund

                      STRATEGIC ASSET MANAGEMENT PORTFOLIOS

                           Strategic Growth Portfolio
                          Conservative Growth Portfolio
                               Balanced Portfolio
                            Flexible Income Portfolio
                                Income Portfolio

                 The WM Group of Funds provide a broad selection
                    of investment alternatives to investors.

The Securities and Exchange Commission has not approved or disapproved these
securities or passed upon the adequacy of this prospectus. Any representation to
the contrary is a crime.
    


<PAGE>   3
                         THE   WM   GROUP   OF   FUNDS
 
- --------------------------------------------------------------------------------
 
   
                                    CONTENTS
    
 
   
<TABLE>
<CAPTION>
                                                  PAGE
<S>                                               <C>
Risk/Return Summary                                 2
Summary of Principal Risks                         26
Principal Risks by Fund                            31
Fees and Expenses of the Funds and Portfolios      33
Description of the Funds
  Money Funds                                      36
  Fixed-Income Funds                               37
  Municipal Funds                                  39
  Equity Funds                                     41
  Common Investment Practices                      43
Ways to Set Up Your Account                        52
How Can I Invest in the Funds and Portfolios?      53
Which Class of Share is Best for me?               55
  Class A Shares                                   55
  Class B Shares                                   56
Distribution of Income and Capital Gains           58
How Can I Sell Shares?                             58
How Can I Exchange My Shares?                      59
Dividends, Capital Gains and Taxes                 59
Organization                                       60
Financial Highlights                               64
</TABLE>
    
<PAGE>   4

                               RISK/RETURN SUMMARY

   
The WM Group of Funds provide a broad range of investment choices, including
asset allocation strategies available through the WM Strategic Asset Management
Portfolios (the "Portfolios"). This summary identifies the investment objective
and principal investment strategies of each Fund and Portfolio. A "Summary of
Principal Risks" describing the principal risks of investing in the Funds and
Portfolios begins on page [__]. You can find additional information about each
Fund and Portfolio, including a more detailed description of the risks of an
investment in each Fund or Portfolio, after this summary. Investments mentioned
in the summary and described in greater detail under "Description of the Funds"
or "Common Investment Practices" below appear in BOLD TYPE. Please be sure to
read the more complete descriptions of the Funds and Portfolios, and the related
risks, before you invest.
    

   
Below the description of each Fund or Portfolio is a bar chart showing how the
investment returns of its Class A shares have varied in the past ten years, or
in the years since the Fund or Portfolio began if it is less than ten years old.
The table following each bar chart shows how, for each Class of shares, average
annual returns of the Fund (other than the Money Funds) or Portfolio compare to
returns of a broad-based securities market index for the last one, five and ten
years (or, for newer Funds or Portfolios, for shorter periods). Performance
shown in the table reflects the maximum applicable sales charge, but performance
shown in the bar chart does not reflect any sales charges. PAST PERFORMANCE IS
NOT NECESSARILY AN INDICATION OF FUTURE PERFORMANCE.
    

         There can be no assurance that any Fund or Portfolio will achieve its
objective. It is possible to lose money on investments in the Funds and
Portfolios. An investment in a Fund or Portfolio is not a deposit of a bank and
is not insured or guaranteed by the Federal Deposit Insurance Corporation or any
other government agency. Although the Money Funds seek to preserve the value of 
your investment at $1.00 per share, it is possible to lose money by investing 
in the Money Funds.


                                       -2-
<PAGE>   5
   
                                MONEY MARKET FUND

- -    OBJECTIVE. This Fund seeks to maximize current income while preserving
     capital and maintaining liquidity.

- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests in high-quality money
     market instruments. The Fund's investments in high-quality money market
     instruments may include U.S. GOVERNMENT SECURITIES, FLOATING AND VARIABLE
     RATE SECURITIES, MUNICIPAL OBLIGATIONS, U.S. DOLLAR DENOMINATED FOREIGN
     INVESTMENTS, ASSET-BACKED SECURITIES, REPURCHASE AGREEMENTS, and
     WHEN-ISSUED AND DELAYED - DELIVERY SECURITIES.

                               YEARLY PERFORMANCE*

                                   [BAR GRAPH]


<TABLE>
<CAPTION>
                  Calendar Year                          Annual Return(%)
                  -------------                          ----------------
                  <S>                                    <C>
                      1989                                     8.60
                      1990                                     7.61
                      1991                                     5.41
                      1992                                     3.07
                      1993                                     2.41
                      1994                                     3.47
                      1995                                     5.33
                      1996                                     4.88
                      1997                                     5.04
                      1998
</TABLE>

During the periods shown above, the highest quarterly return was _____% (for the
quarter ended __________ __, 19__), and the lowest was ____% (for the quarter
ended _________ __, 19__).

                                PERFORMANCE TABLE*


<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR               PAST ONE           PAST FIVE         PAST TEN         SINCE CLASS B
PERIODS ENDING DECEMBER 31, 1998)               YEAR               YEARS             YEARS            INCEPTION
                                                                                                      (5/24/94)
<S>                                             <C>                <C>               <C>             <C>
Class A Shares                                                                                        N/A
Class B Shares                                                     N/A               N/A
</TABLE>


* The Fund's performance through ________ __, 19__ benefitted from the agreement
  of WM Advisors and its affiliates to limit the Fund's expenses.
    


                                       -3-
<PAGE>   6
   
                          TAX-EXEMPT MONEY MARKET FUND

- -    OBJECTIVE. This Fund seeks to maximize current income that is exempt from
     federal income tax while preserving capital and maintaining liquidity.

- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in
     high-quality, short-term fixed income obligations issued by states,
     counties, cities or other governmental entities that generate income exempt
     from federal income tax. The Fund's investments in high-quality,
     short-term, debt securities may include VARIABLE RATE OBLIGATIONS, HOLDINGS
     IN OTHER INVESTMENT COMPANIES, MUNICIPAL LEASES, WHEN-ISSUED AND
     DELAYED-DELIVERY SECURITIES and ALTERNATIVE MINIMUM TAX ("AMT") - SUBJECT
     BONDS.
                               YEARLY PERFORMANCE*

                                   [BAR GRAPH]

<TABLE>
<CAPTION>
                  Calendar Year                          Annual Return(%)
                  -------------                          ----------------
                  <S>                                    <C>
                      1989                                     6.05
                      1990                                     5.77
                      1991                                     4.19
                      1992                                     2.41
                      1993                                     2.06
                      1994                                     2.37
                      1995                                     4.01
                      1996                                     3.05
                      1997                                     3.18
                      1998
</TABLE>

During the periods shown above, the highest quarterly return was _____% (for the
quarter ended _______ __, 19__), and the lowest was ____% (for the quarter ended
________ __, 19__).

                                PERFORMANCE TABLE*

<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR               PAST ONE           PAST FIVE         PAST TEN         SINCE CLASS B
PERIODS ENDING DECEMBER 31, 1998)               YEAR               YEARS             YEARS            INCEPTION
                                                                                                      (5/2/94)
<S>                                             <C>                <C>               <C>              <C>
Class A Shares                                                                                        N/A
Class B Shares                                                     N/A               N/A
</TABLE>

* The Fund's performance through ________ __, 19__ benefitted from the agreement
  of WM Advisors and its affiliates to limit the Fund's expenses.
    


                                       -4-
<PAGE>   7
   
                              CALIFORNIA MONEY FUND

- -    OBJECTIVE. This non-diversified Fund seeks to maximize current income that
     is exempt from federal and California state personal income tax, consistent
     with safety of principal and maintenance of liquidity.

- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in
     high-quality, short-term fixed income obligations issued by states,
     counties, cities or other governmental bodies that generate income exempt
     from California state personal income tax. The Fund may also invest in
     high quality instruments that may generate taxable income, including U.S.
     GOVERNMENT SECURITIES, MORTGAGE- AND ASSET-BACKED SECURITIES (including
     collateralized mortgage obligations) and REPURCHASE AGREEMENTS.

- -    The Fund is "NON-DIVERSIFIED," which means that the Fund may invest more 
     of its assets in the securities of fewer issuers than other mutual funds.

                               YEARLY PERFORMANCE*

                                   [BAR GRAPH]
<TABLE>
<CAPTION>
              Calendar Year                             Annual Return (%)
              -------------                             -----------------
                 <S>                                          <C>
                 1991                                         4.52
                 1992                                         3.35
                 1993                                         2.07
                 1994                                         1.81
                 1995                                         2.79
                 1996                                         3.00
                 1997                                         2.81
                 1998
</TABLE>



During the periods shown above, the highest quarterly return was ____% (for the
quarter ended _______ __, 19__), and the lowest was ___% (for the quarter ended
_______ __, 19__).

                                PERFORMANCE TABLE*

<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR               PAST ONE           PAST FIVE       LIFE OF FUND        SINCE CLASS B
PERIODS ENDING DECEMBER 31, 1998)               YEAR               YEARS           (SINCE 7/10/89)     INCEPTION
                                                                                                       (7/1/94)
<S>                                             <C>                <C>             <C>                 <C>
Class A Shares                                                                                         N/A
Class B Shares                                                     N/A             N/A
</TABLE>

* The Fund's performance through ________ __, 19__ benefitted from the agreement
  of WM Advisors and its affiliates to limit the Fund's expenses.
    


                                       -5-
<PAGE>   8
   
                        SHORT TERM HIGH QUALITY BOND FUND

- -    OBJECTIVE. This Fund seeks as high a level of current income as is
     consistent with prudent investment management and stability of principal.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in high-grade
     short-term bonds and other debt securities. The Fund generally maintains a
     dollar-weighted average portfolio maturity of three years or less. The
     Fund's investments may include U.S. GOVERNMENT SECURITIES, REPURCHASE
     AGREEMENTS AND MORTGAGE- AND ASSET-BACKED SECURITIES.


                               YEARLY PERFORMANCE*

                                   [BAR GRAPH]
<TABLE>
<CAPTION>
              Calendar Year                             Annual Return (%)
              -------------                             -----------------
                 <S>                                          <C>
                 1995                                         4.42
                 1996                                         5.05
                 1997                                         6.15
                 1998

</TABLE>

During the periods shown above, the highest quarterly return was ____% (for the
quarter ended _______ __, 19__), and the lowest was ___% (for the quarter ended
_______ __, 19__).

                                PERFORMANCE TABLE*


<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR               PAST ONE           PAST FIVE        LIFE OF FUND      SINCE CLASS B
PERIODS ENDING DECEMBER 31, 1998)               YEAR               YEARS            (11/1/93)         INCEPTION
                                                                                                      (7/1/94)
<S>                                             <C>                <C>              <C>               <C>
Class A Shares                                                                                        N/A
Class B Shares                                                     N/A              N/A
Lehman Brothers Mutual Fund Short (1-5
[year]) Investment Grade Debt Index**
</TABLE>



*  The Fund's performance through ________ __, 19__ benefitted from the 
agreement of WM Advisors and its affiliates to limit the Fund's expenses.


** This index includes all investment-grade, corporate debt securities with
maturities of one to five years.
    



                                       -6-
<PAGE>   9
   
                            TARGET MATURITY 2002 FUND

- -    OBJECTIVE. This Fund seeks as high a level of return as is consistent with
     preservation of capital through December 31, 2002, and current income
     consistent with the creditworthiness of U.S. Treasury securities
     thereafter.


- -    PRINCIPAL INVESTMENT STRATEGIES. This Fund invests primarily in zero-coupon
     U.S. Treasury Securities that will mature during 2002. The Fund may also
     invest in other U.S. GOVERNMENT SECURITIES and fixed-income securities.


                               YEARLY PERFORMANCE*

                                   [BAR GRAPH]
<TABLE>
<CAPTION>
              Calendar Year                             Annual Return (%)
              -------------                             -----------------
                 <S>                                          <C>
                 1996                                         2.91
                 1997                                         6.95
                 1998
</TABLE>



During the periods shown above, the highest quarterly return was ____% (for the
quarter ended ______ __, 19__), and the lowest was ______% (for the quarter
ended _______ __, 19__).

                                PERFORMANCE TABLE*


<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR               PAST ONE YEAR                      LIFE OF FUND
PERIODS ENDING DECEMBER 31, 1998)                                                  (SINCE 3/20/95)
<S>                                             <C>                                <C>
Class A Shares
Lehman Brothers Government Bond Index**
</TABLE>


*  The Fund's performance through ________ __, 19__ benefitted from the 
agreement of WM Advisors and its affiliates to limit the Fund's expenses.



** This index includes all U.S. Government agency and Treasury securities.
    


                                       -7-
<PAGE>   10
   
                         U.S. GOVERNMENT SECURITIES FUND

- -    OBJECTIVE. This Fund seeks a high level of current income, consistent with
     safety and liquidity.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in securities
     issued by the U.S. Government and its agencies, including collateralized
     mortgage obligations and other MORTGAGE-BACKED SECURITIES. The Fund may
     also invest in fixed-income securities and DOLLAR ROLLS for leverage.


                               YEARLY PERFORMANCE*

                                   [BAR GRAPH]
<TABLE>
<CAPTION>
              Calendar Year                             Annual Return (%)
              -------------                             -----------------
                 <S>                                         <C>
                 1989                                         2.94
                 1990                                        12.31 
                 1991                                        -4.91
                 1992                                        11.72
                 1993                                         7.03
                 1994                                         8.12
                 1995                                        19.45
                 1996                                         2.48
                 1997                                         9.92
                 1998
</TABLE>



During the periods shown above, the highest quarterly return was ______% (for
the quarter ended _______ __, 19__), and the lowest was _____% (for the quarter
ended _______ __, 19__).

                                PERFORMANCE TABLE*


<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR               PAST ONE           PAST FIVE         PAST TEN         SINCE CLASS B
PERIODS ENDING DECEMBER 31, 1998)               YEAR               YEARS             YEARS            INCEPTION
                                                                                                      (3/2/94)
<S>                                             <C>                <C>               <C>              <C>
Class A Shares                                                                                        N/A
Class B Shares                                                     N/A               N/A
Lehman Brothers Government Bond
Index**
</TABLE>



*  The Fund's performance through ________ __, 19__ benefitted from the 
agreement of WM Advisors and its affiliates to limit the Fund's expenses.



** This index includes all U.S. Government agency and Treasury securities.
    


                                       -8-
<PAGE>   11
   
                                   INCOME FUND

- -    OBJECTIVE. This Fund seeks a high level of current income consistent with
     preservation of capital.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in a
     diversified pool of debt securities including U.S. GOVERNMENT SECURITIES
     and MORTGAGE-BACKED SECURITIES (including collateralized mortgage
     obligations), of which up to 35% may be in lower-rated fixed income
     securities (which are sometimes called "junk bonds"). The Fund may also
     invest in convertible securities.



                              YEARLY PERFORMANCE*

                                   [BAR GRAPH]
<TABLE>
<CAPTION>
              Calendar Year                             Annual Return (%)
              -------------                             -----------------
                 <S>                                          <C>
                 1989                                          6.58
                 1990                                          4.32
                 1991                                         15.93
                 1992                                         13.57
                 1993                                         10.82
                 1994                                         -4.82
                 1995                                         21.58
                 1996                                          3.46
                 1997                                         10.51
                 1998
</TABLE>




During the periods shown above, the highest quarterly return was ____% (for the
quarter ended _____ __, 19__), and the lowest was ______% (for the quarter ended
______ __, 19__).


                                PERFORMANCE TABLE*



<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR               PAST ONE           PAST FIVE        PAST TEN          SINCE CLASS B
PERIODS ENDING DECEMBER 31, 1998)               YEAR               YEARS            YEARS             INCEPTION
                                                                                                      (3/30/94)
<S>                                             <C>                <C>              <C>               <C>
Class A Shares                                                                                        N/A
Class B Shares                                                     N/A              N/A
Lehman Brothers Government/Corporate
Bond Index**
</TABLE>



 * The Fund's performance through ______________, 19__ benefitted from the
   agreement of WM Advisors and its affiliates to limit the Fund's expenses.



** This index is generally considered representative of the U.S. government and
   corporate bond markets.
    



                                       -9-
<PAGE>   12

                                 HIGH YIELD FUND

- -    OBJECTIVE. This Fund seeks to provide a high level of current income.

   
- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in
     high-yielding lower-rated securities (sometimes called "junk bonds"), which
     may include FOREIGN INVESTMENTS. The Fund may also invest in higher-rated
     FIXED-INCOME SECURITIES, preferred stock and convertible securities.
    

     No performance information is available for the High Yield Fund because it
has not yet been in operation for a full year.


                                      -10-
<PAGE>   13
   
                              TAX-EXEMPT BOND FUND

- -    OBJECTIVE. This Fund seeks to provide a high level of income that is exempt
     from federal income taxes while protecting investors' capital.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in obligations
     issued by states, counties, cities or other governmental entities,
     including municipal leases, ALTERNATIVE MINIMUM TAX ("AMT") SUBJECT BONDS
     AND INVERSE FLOATING RATE OBLIGATIONS, that generate income exempt from
     federal income tax. The Fund may also invest in taxable FIXED-INCOME
     SECURITIES and STRATEGIC TRANSACTIONS such as interest rate futures and
     options.



                              YEARLY PERFORMANCE*

                                   [BAR GRAPH]
<TABLE>
<CAPTION>
              Calendar Year                             Annual Return (%)
              -------------                             -----------------
                 <S>                                          <C>
                 1989                                          8.08
                 1990                                          6.71
                 1991                                         11.36
                 1992                                          9.00
                 1993                                         12.54
                 1994                                         -6.53
                 1995                                         18.25
                 1996                                          2.52
                 1997                                          8.59
                 1998
</TABLE>
 



During the periods shown above, the highest quarterly return was ____% (for the
quarter ended _____ __, 19__), and the lowest was ____% (for the quarter ended
_______ __, 19__).


                               PERFORMANCE TABLE*



<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR               PAST ONE           PAST FIVE        PAST TEN          SINCE CLASS B
PERIODS ENDING DECEMBER 31, 1998)               YEAR               YEARS            YEARS OR          INCEPTION
                                                                                    SINCE             (3/20/94)
                                                                                    INCEPTION
<S>                                             <C>                <C>              <C>               <C>
Class A Shares                                                                                        N/A
Class B Shares                                                     N/A              N/A
Lehman Brothers Municipal Bond Index**
</TABLE>



 * The Fund's performance through _____________, 19__ benefitted from the
   agreement of WM Advisors and its affiliates to limit the Fund's expenses.



** This index includes all investment grade, tax-exempt bond issues.
    



                                      -11-
<PAGE>   14
   
                            CALIFORNIA MUNICIPAL FUND

- -    OBJECTIVE. This non-diversified Fund seeks to provide as high a level of
     current income that is exempt from federal and California state income tax
     as is consistent with prudent investment management and preservation of
     capital.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in
     intermediate- and long-term California municipal obligations, including
     municipal leases and AMT-SUBJECT BONDS. The Fund may also invest in other
     MUNICIPAL OBLIGATIONS and STRATEGIC TRANSACTIONS such as interest rate
     futures and options.

- -    The Fund is "NON-DIVERSIFIED," which means that the Fund may invest more 
     of its assets in the securities of fewer issuers than other mutual funds.


                              YEARLY PERFORMANCE*

                                   [BAR GRAPH]
<TABLE>
<CAPTION>
              Calendar Year                             Annual Return (%)
              -------------                             -----------------
                 <S>                                          <C>
                 1991                                          7.16
                 1992                                         10.56
                 1993                                         13.84
                 1994                                         -2.94
                 1995                                          7.57
                 1996                                          6.40
                 1997                                          8.83
                 1998                                          9.26
</TABLE>




During the periods shown above, the highest quarterly return was ___% (for the
quarter ended _______ __, 19__), and the lowest was ___% (for the quarter ended
_______ __, 19__).


                               PERFORMANCE TABLE*



<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR               PAST ONE           PAST FIVE        LIFE OF FUND      SINCE CLASS B
PERIODS ENDING DECEMBER 31, 1998)               YEAR               YEARS            (SINCE            INCEPTION
                                                                                    7/25/89)          (7/1/94)
<S>                                             <C>                <C>              <C>               <C>
Class A Shares                                                                                        N/A
Class B Shares                                                     N/A              N/A
Lehman Brothers Municipal Bond Index**
</TABLE>



 * The Fund's performance through __________, 19__ benefitted from the agreement
   of WM Advisors and its affiliates to limit the Fund's expenses.



** This index includes all investment grade tax-exempt bond issues.
    



                                      -12-
<PAGE>   15
   
                 CALIFORNIA INSURED INTERMEDIATE MUNICIPAL FUND

- -    OBJECTIVE. This non-diversified Fund seeks to provide as high a level of
     current income that is exempt from federal and California state income tax
     as is consistent with prudent investment management and preservation of
     capital.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in
     intermediate-term insured California municipal obligations, including
     municipal leases and AMT-Subject Bonds. The weighted average effective
     maturity of the Fund's investments is ten years or less, and the maximum
     effective maturity of any of its investments is fifteen years. The Fund may
     also invest in other MUNICIPAL OBLIGATIONS and STRATEGIC TRANSACTIONS such
     as interest rate futures and options.

- -    The Fund is "NON-DIVERSIFIED," which means that the Fund may invest more 
     of its assets in the securities of fewer issuers than other mutual funds.


                               YEARLY PERFORMANCE*


                                   [BAR GRAPH]

<TABLE>
<CAPTION>
                  Calendar Year                          Annual Return(%)
                  -------------                          ----------------
                  <S>                                    <C>
                      1995                                     8.71
                      1996                                     6.25
                      1997                                     6.97
                      1998
</TABLE>


During the periods shown above, the highest quarterly return was ____% (for the
quarter ended _______ __, 19__), and the lowest was ____% (for the quarter ended
______ __, 19__).


                                PERFORMANCE TABLE*



<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR               PAST ONE YEAR           LIFE OF FUND            SINCE CLASS B
PERIODS ENDING DECEMBER 31, 1998)                                       (SINCE 4/04/94)         INCEPTION
                                                                                                (  /  /95)
<S>                                             <C>                     <C>                     <C>
Class A Shares                                                                                  N/A
Class B Shares                                                          N/A
Lehman Brothers Municipal Bond Index**
</TABLE>



 * The Fund's performance through _________, 19__ benefitted from the agreement
   of WM Advisors and its affiliates to limit the Fund's expenses.



** This index includes all investment grade tax-exempt bond issues.
    



                                      -13-
<PAGE>   16
   
                         FLORIDA INSURED MUNICIPAL FUND

- -    OBJECTIVE. This non-diversified Fund seeks to provide as high a level of
     current income that is exempt from federal income tax as is consistent with
     prudent investment management and preservation of capital. The Fund also
     seeks to ensure that the value of its shares is exempt from Florida
     intangible personal property tax.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in
     intermediate- and long-term insured Florida municipal obligations,
     including municipal leases and AMT-SUBJECT BONDS. The Fund may also invest
     in other MUNICIPAL OBLIGATIONS and interest rate futures and options.

- -    The Fund is "NON-DIVERSIFIED," which means that the Fund may invest more 
     of its assets in the securities of fewer issuers than other mutual funds.

                               YEARLY PERFORMANCE*

                                   [BAR GRAPH]

<TABLE>
<CAPTION>
                  Calendar Year                          Annual Return(%)
                  -------------                          ----------------
                  <S>                                    <C>
                      1994                                    -1.50
                      1995                                     6.01
                      1996                                     7.56
                      1997                                     8.43
                      1998
</TABLE>


During the periods shown above, the highest quarterly return was ____% (for the
quarter ended _______ __, 199_), and the lowest was ____% (for the quarter ended
________ __, 19__).

                                PERFORMANCE TABLE*

<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR               PAST ONE           PAST FIVE         LIFE OF FUND      SINCE CLASS B
PERIODS ENDING DECEMBER 31, 1998)               YEAR               YEARS             (SINCE            INCEPTION
                                                                                     6/07/93)          (7/1/94)
<S>                                             <C>                <C>               <C>               <C>
Class A Shares                                                                                         N/A
Class B Shares                                                     N/A               N/A
Lehman Brothers Municipal Bond Index**
</TABLE>


* The Fund's performance through ______________________ __, 19__ benefitted 
from the agreement of WM Advisors and its affiliates to limit the Fund's 
expenses.



** This index includes all investment grade tax-exempt bond issues.
    


                                      -14-

<PAGE>   17
   
                                BOND & STOCK FUND

- -    OBJECTIVE. This Fund seeks to provide continuity of income, conservation of
     principal and long-term growth of income and principal.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in common
     stocks, preferred stocks, bonds and convertible securities. At least 25% of
     the Fund's assets are generally invested in debt securities. The Fund's
     investments may include U.S. GOVERNMENT SECURITIES, AMERICAN DEPOSITORY
     RECEIPTS (ADRS) AND EUROPEAN DEPOSITORY RECEIPTS (EDRS), MORTGAGE-BACKED
     SECURITIES (including collateralized mortgage obligations), REPURCHASE
     AGREEMENTS and REAL ESTATE INVESTMENT TRUSTS (REITS)



                               YEARLY PERFORMANCE*


                                   [BAR GRAPH]

<TABLE>
<CAPTION>
                  Calendar Year                          Annual Return(%)
                  -------------                          ----------------
                  <S>                                    <C>
                      1989                                    13.21
                      1990                                    -2.29
                      1991                                    16.96
                      1992                                    11.92
                      1993                                    13.99
                      1994                                    -0.09
                      1995                                    22.55
                      1996                                    15.66
                      1997                                    20.81
                      1998
</TABLE>


During the periods shown above, the highest quarterly return was ____% (for the
quarter ended ________ __, 19__), and the lowest was___% (for the quarter ended
________ __, 19__).


                                PERFORMANCE TABLE*



<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR               PAST ONE           PAST FIVE         PAST TEN          SINCE CLASS B
PERIODS ENDING DECEMBER 31, 1998)               YEAR               YEARS             YEARS             INCEPTION
                                                                                                       (3/30/94)
<S>                                             <C>                <C>               <C>               <C>
Class A Shares                                                                                         N/A
Class B Shares                                                     N/A               N/A
Standard & Poor's 500 Composite Index**
Lehman Brothers Government/Corporate
Bond***

</TABLE>



* The Fund's performance through ______________________ __, 19__ benefitted 
from the agreement of WM Advisors and its affiliates to limit the Fund's 
expenses.



** This index represents an unmanaged weighted index of 500 industrial,
transportation, utility and financial companies widely regarded by investors as
representative of the stock market.



*** This index is generally considered representative of the U.S. government and
corporate bond markets.
    


                                      -15-
<PAGE>   18
   
                              GROWTH & INCOME FUND

- -    OBJECTIVE. This Fund seeks to provide long-term capital growth. Current
     income is a secondary consideration.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in common
     stocks.



                               YEARLY PERFORMANCE*


                                   [BAR GRAPH]

<TABLE>
<CAPTION>
                  Calendar Year                          Annual Return(%)
                  -------------                          ----------------
                  <S>                                    <C>
                      1989                                    13.00
                      1990                                   -16.25
                      1991                                    32.69
                      1992                                     9.94
                      1993                                    11.06
                      1994                                     8.55
                      1995                                    20.87
                      1996                                    23.61
                      1997                                    31.24
                      1998
</TABLE>


During the periods shown above, the highest quarterly return was __% (for the
quarter ended ________ __, 19__), and the lowest was _____% (for the quarter
ended _________ __, 19__). [For the period ended March 31, 1999 the Funds return
was %].


                                PERFORMANCE TABLE*



<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR               PAST ONE           PAST FIVE         PAST TEN          SINCE CLASS B
PERIODS ENDING DECEMBER 31, 1998)               YEAR               YEARS             YEARS             INCEPTION
                                                                                                       (3/30/94)
<S>                                             <C>                <C>               <C>               <C>
Class A Shares                                                                                         N/A
Class B Shares                                                     N/A               N/A
Standard & Poor's 500 Composite Index**
</TABLE>



* The Fund's performance through ______________________ __, 19__ benefitted 
from the agreement of WM Advisors and its affiliates to limit the Fund's 
expenses.



** This index represents an unmanaged weighted index of 500 industrial,
transportation, utility and financial companies widely regarded by investors as
representative of the stock market.
    



                                      -16-
<PAGE>   19
   
                                 NORTHWEST FUND

- -    OBJECTIVE. This Fund seeks long-term growth of capital.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in common
     stocks of companies located or doing business in Alaska, Idaho, Montana,
     Oregon and Washington. The Fund's investments may include REPURCHASE
     AGREEMENTS and REAL ESTATE INVESTMENT TRUSTS (REITS).


                               YEARLY PERFORMANCE

                                   [BAR GRAPH]

<TABLE>
<CAPTION>
                  Calendar Year                          Annual Return(%)
                  -------------                          ----------------
                  <S>                                    <C>
                      1989                                    36.14
                      1990                                   -16.68
                      1991                                    60.49
                      1992                                     5.77
                      1993                                     3.82
                      1994                                     2.97
                      1995                                    22.24
                      1996                                    14.54
                      1997                                    44.47
                      1998
</TABLE>





During the periods shown above, the highest quarterly return was ___% (for the
quarter ended ________ __, 19__), and the lowest was ____% (for the quarter
ended ________ __, 19__).

                                PERFORMANCE TABLE

<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR               PAST ONE        PAST FIVE      PAST TEN        SINCE CLASS B
PERIODS ENDING DECEMBER 31, 1998)               YEAR            YEARS          YEARS           INCEPTION
                                                                                               (3/30/94)
<S>                                             <C>             <C>            <C>             <C>
Class A Shares                                                                                 N/A
Class B Shares                                                  N/A            N/A
Standard & Poor's 500 Composite Index**
</TABLE>



* The Fund's performance through ______________________ __, 19__ benefitted 
from the agreement of WM Advisors and its affiliates to limit the Fund's 
expenses.



** This index represents an unmanaged weighted index of 500 industrial,
transportation, utility and financial companies widely regarded by investors as
representative of the stock market.
    



                                      -17-
<PAGE>   20
   
                                   GROWTH FUND

- -    OBJECTIVE. This Fund seeks long-term capital appreciation.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in common
     stocks, including foreign stocks, that, in the opinion of WM Advisors or 
     the sub-advisor, offer potential for growth. The Fund may also invest in
     commercial paper and preferred stock.



                               YEARLY PERFORMANCE*


                                   [BAR GRAPH]

<TABLE>
<CAPTION>
                  Calendar Year                          Annual Return(%)
                  -------------                          ----------------
                  <S>                                    <C>
                      1994                                        0
                      1995                                    32.33
                      1996                                    25.44
                      1997                                    10.88
                      1998
</TABLE>


During the periods shown above, the highest quarterly return was ___% (for the
quarter ended ________ __, 19__), and the lowest was ____% (for the quarter
ended _________ __, 19__).


                                PERFORMANCE TABLE*



<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR               PAST ONE           PAST FIVE         LIFE OF THE       SINCE CLASS B
PERIODS ENDING DECEMBER 31, 1998)               YEAR               YEARS             FUND              INCEPTION
                                                                                     (4/5/93)          (7/1/94)
<S>                                             <C>                <C>               <C>               <C>
Class A Shares
Class B Shares                                                                         N/A                N/A
Standard & Poor's 500 Composite Index**
</TABLE>



* The Fund's performance through ______________________ __, 19__ benefitted 
from the agreement of WM Advisors and its affiliates to limit the Fund's 
expenses.



** This index represents an unmanaged weighted index of 500 industrial,
transportation, utility and financial companies widely regarded by investors as
representative of the stock market.
    



                                      -18-
<PAGE>   21
   
                              EMERGING GROWTH FUND

- -    OBJECTIVE. This Fund seeks long-term capital appreciation.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in equity
     securities, including FOREIGN SECURITIES, of companies with market
     capitalizations of less than $1.4 billion. The Fund may also invest in
     REPURCHASE AGREEMENTS and STRATEGIC TRANSACTIONS such as futures and
     options on futures.



                               YEARLY PERFORMANCE*


                                   [BAR GRAPH]


<TABLE>
<CAPTION>
                  Calendar Year                          Annual Return(%)
                  -------------                          ----------------
                  <S>                                    <C>
                      1992                                    22.47
                      1993                                    19.75
                      1994                                     3.40
                      1995                                    21.54
                      1996                                    35.93
                      1997                                    -1.50
                      1998
</TABLE>


During the periods shown above, the highest quarterly return was ____% (for the
quarter ended _____ __, 19__), and the lowest was ___% (for the quarter ended
________ __, 19__).


                                PERFORMANCE TABLE*



<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR               PAST ONE           PAST FIVE         LIFE OF FUND      SINCE CLASS B
PERIODS ENDING DECEMBER 31, 1998)               YEAR               YEARS             (SINCE            INCEPTION
                                                                                     7/18/90)          (7/1/94)
<S>                                             <C>                <C>               <C>               <C>
Class A Shares                                                                                         N/A
Class B Shares                                                     N/A               N/A
Standard & Poor's 500 Composite Index**
Russell 2000 Index***
</TABLE>



* The Fund's performance through _______________ __, 19__ benefitted from the 
agreement of WM Advisors and its affiliates to limit the Fund's expenses.



** This index represents an unmanaged weighted index of 500 industrial,
transportation, utility and financial companies widely regarded by investors as
representative of the stock market. 



*** This index represents the smallest 2000 companies followed by Russell and is
used to measure the small-cap market.
    



                                      -19-
<PAGE>   22
   
                            INTERNATIONAL GROWTH FUND

- -    OBJECTIVE. This Fund seeks to provide long-term capital appreciation.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in equity
     securities of foreign issuers, including issuers located in developing or
     emerging market countries. The Fund may also use derivatives such as
     FOREIGN CURRENCY EXCHANGE TRANSACTIONS and REPURCHASE AGREEMENTS.



                               YEARLY PERFORMANCE*


                                   [BAR GRAPH]

<TABLE>
<CAPTION>
                  Calendar Year                          Annual Return(%)
                  -------------                          ----------------
                  <S>                                    <C>
                      1992                                     7.28
                      1993                                    11.51
                      1994                                    12.39
                      1995                                    -4.01
                      1996                                    13.16
                      1997                                    15.50
                      1998
</TABLE>

                                                                
During the periods shown above, the highest quarterly return was ___% (for the
quarter ended ________ __, 19__), and the lowest was ____% (for the quarter
ended _________ __, 19__).


                                PERFORMANCE TABLE*



<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR               PAST ONE           PAST FIVE        LIFE OF FUND       SINCE CLASS B
PERIODS ENDING DECEMBER 31, 1998)               YEAR               YEARS            (SINCE             INCEPTION
                                                                                    7/18/90)           (7/1/94)
<S>                                             <C>                <C>              <C>                <C>
Class A Shares                                                                                         N/A
Class B Shares                                                     N/A              N/A
Morgan Stanley Capital International
EAFE Index**
</TABLE>



* The Fund's performance through _______________ __, 19__ benefitted from the 
agreement of WM Advisors and its affiliates to limit the Fund's expenses.



** This index includes stock markets of Europe, Australia and the Far East 
weighted by capitalization and represents the equity markets of 18 countries.
    



                                      -20-
<PAGE>   23
   
                           STRATEGIC GROWTH PORTFOLIO

- -    OBJECTIVE. This Portfolio seeks to provide long-term capital appreciation.
     In general, relative to the other Portfolios, the Strategic Growth
     Portfolio should offer investors the potential for a higher level of
     capital growth while exposing investors to corresponding levels of
     principal risk.

- -    PRINCIPAL INVESTMENT STRATEGIES. All of the Portfolios allocate their
     assets among certain of the Funds to achieve their objectives. This
     Portfolio invests at least 75% of its net assets in the Equity Funds under
     normal market conditions.

     The Portfolio may invest up to 25% of its assets in each of the Money
     Market, Short-Term High Quality Bond or High Yield Funds. It may also
     invest up to 50% of its assets in each of the Growth & Income, Northwest,
     Growth, Emerging Growth or International Growth Funds.


     The Portfolio may also make use of various other principal investment
     strategies, including U.S. GOVERNMENT SECURITIES, short-term debt rated A
     or higher, commercial paper including master notes and bank obligations,
     REPURCHASE AGREEMENTS and STRATEGIC TRANSACTIONS such as futures contracts
     and options.



                               YEARLY PERFORMANCE*


                                   [BAR GRAPH]

<TABLE>
<CAPTION>
                  Calendar Year                          Annual Return(%)
                  -------------                          ----------------
                  <S>                                    <C>
                      1997                                    19.33
                      1998
</TABLE>


During the periods shown above, the highest quarterly return was____% (for the
quarter ended _____ __, 19__), and the lowest was _____% (for the quarter ended
______ __, 19__).


                                PERFORMANCE TABLE*




<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR               PAST ONE YEAR                  LIFE OF FUND
PERIODS ENDING DECEMBER 31, 1998)                                              (SINCE 7/25/96)
<S>                                             <C>                            <C>
Class A Shares
Class B Shares
Standard & Poor's 500 Composite Index**
</TABLE>




* Performance information shown for periods prior to November 1, 1996 reflects
the performance of an asset allocation service investing in the Funds and their
predecessors. Because the asset allocation service was not a mutual fund, it was
not subject to certain restrictions applicable to the Portfolio. If it had been,
performance shown might have differed. The Portfolio's performance through
October 31, 1998 benefitted from the agreement of WM Advisors and its affiliates
to limit the Portfolio's expenses.




** This index represents an unmanaged weighted index of 500 industrial,
transportation, utility and financial companies widely regarded by investors as
representative of the stock market.
    



                                      -21-
<PAGE>   24
   
                          CONSERVATIVE GROWTH PORTFOLIO

- -    OBJECTIVE. This Portfolio seeks to provide long-term capital appreciation.
     In general, relative to the other Portfolios, the Conservative Growth
     Portfolio should offer you the potential for a low level of income and the
     potential for a medium to high level of capital growth while exposing you
     to a medium level of principal risk.

- -    PRINCIPAL INVESTMENT STRATEGIES. All of the Portfolios allocate their
     assets among certain of the Funds to achieve their objectives. This
     Portfolio generally invests at least 60% of its net assets in the Equity
     Funds.

     The Portfolio may invest up to 30% of its assets in each of the Money
     Market, Short-Term High Quality Bond, U.S. Government Securities, Income or
     High Yield Funds. It may also invest up to 40% of its assets in each of the
     Growth & Income, Northwest, Growth, Emerging Growth or International Growth
     Funds.


     The Portfolio may also make use of various other principal investment
     strategies, including U.S. GOVERNMENT SECURITIES, short-term debt rated A
     or higher, commercial paper including master notes and bank obligations,
     REPURCHASE AGREEMENTS and STRATEGIC TRANSACTIONS such as futures contracts
     and options.



                               YEARLY PERFORMANCE*


                                   [BAR GRAPH]

<TABLE>
<CAPTION>
                  Calendar Year                          Annual Return(%)
                  -------------                          ----------------
                  <S>                                    <C>
                      1997                                     14.39
                      1998
</TABLE>





During the periods shown above, the highest quarterly return was ___% (for the
quarter ended _______ __, 19__), and the lowest was ___% (for the quarter ended
_______ __, 19__).


                                PERFORMANCE TABLE*




<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR               PAST ONE YEAR                  LIFE OF FUND
PERIODS ENDING DECEMBER 31, 1998)                                              (SINCE 7/25/96)
<S>                                             <C>                            <C>
Class A Shares
Class B Shares
Capital Market Benchmark***
Standard & Poor's 500 Index**
</TABLE>




* Performance information shown for periods prior to November 1, 1996 reflects
the performance of an asset allocation service investing in the Funds and their
predecessors. Because the asset allocation service was not a mutual fund, it was
not subject to certain restrictions applicable to the Portfolio. If it had been,
performance shown might have differed. The Portfolio's performance through
October 31, 1998 benefitted from the agreement of WM Advisors and its affiliates
to limit the Portfolio's expenses.


** This index represents an unmanaged weighted index of 500 industrial,
transportation, utility and financial companies widely regarded by investors as
representative of the stock market.



** This is a blended mix of capital market indices that is intended to represent
a proxy for portfolio performance. The benchmark allocation is as follows: 35% 
S&P 500, 20% MSCI EAFE + Emerging Markets, 20% Lehman Bros. Mutual Fund (1-5) 
Gov/Corp Index, 20% Salomon Bros. 90-day T-Bills, and 5% Russell 2000 Growth. A 
description of the components of the the Portfolio's Capital Market Index can 
be found in the Statement of Additional Information, which you can obtain 
free of charge by calling 800-222-5852.
    



                                      -22-
<PAGE>   25
   
                               BALANCED PORTFOLIO

- -    OBJECTIVE. This Portfolio seeks to provide as high a level of total return
     (consisting of reinvested income and capital appreciation) consistent with
     reasonable risk. In general, relative to the other Portfolios, the Balanced
     Portfolio should offer you the potential for a medium level of income and
     the potential for a medium level of capital growth while exposing you to a
     medium level of principal risk.

- -    PRINCIPAL INVESTMENT STRATEGIES. All of the Portfolios allocate their
     investments among certain of the Funds to achieve their objectives. This
     Portfolio invests at least 30% and no more than 70% of its net assets in
     both the Equity Funds and the Fixed-Income Funds.

     The Portfolio may invest up to 40% of its assets in each of the Money
     Market, Short-Term High Quality Bond U.S. Government Securities, Income or
     High Yield Funds. It may also invest up to 30% of its assets in each of the
     Growth & Income, Northwest, Growth, Emerging Growth and International
     Growth Funds.


     The Portfolio may also make use of various other principal investment
     strategies, including U.S. GOVERNMENT SECURITIES, short-term debt rated A
     or higher, commercial paper including master notes and bank obligations,
     REPURCHASE AGREEMENTS and STRATEGIC TRANSACTIONS such as futures contracts
     and options.



                               YEARLY PERFORMANCE*

                                   [BAR GRAPH]
<TABLE>
<CAPTION>
              Calendar Year                             Annual Return (%)
              -------------                             -----------------
                 <S>                                          <C>
                 1997                                         15.02
                 1998
</TABLE>




During the periods shown above, the highest quarterly return was ___% (for the
quarter ended ______ __, 19__), and the lowest was ____% (for the quarter ended
_______ __, 19__).


                                PERFORMANCE TABLE*



<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR               PAST ONE YEAR                  LIFE OF FUND
PERIODS ENDING DECEMBER 31, 1998)                                              (SINCE 7/25/96)
<S>                                             <C>                            <C>
Class A Shares
Class B Shares
Capital Market Benchmark**
Standard & Poor's 500 Index*
</TABLE>



* Performance information shown for periods prior to November 1, 1996 reflects
the performance of an asset allocation service investing in the Funds and their
predecessors. Because the asset allocation service was not a mutual fund, it was
not subject to certain restrictions applicable to the Portfolio. If it had been,
performance shown might have differed. The Portfolio's performance through
October 31, 1998 benefitted from the agreement of WM Advisors and its affiliates
to limit the Portfolio's expenses.


* This index represents an unmanaged weighted index of 500 industrial,
transportation, utility and financial companies widely regarded by investors as
representative of the stock market.



** This is a blended mix of capital market indices that is intended to represent
a proxy for portfolio performance. The benchmark allocation is as follows: 25%
Lehman Bros Mutual Fund Short (1-5) Gov/Corp Index, 25% Salomon Bros 90-day
T-Bills, 20% Lehman Bros Mortgage Index, 15% S&P 500, and 15% MSCI EAFE +
Emerging Markets. A description of the components of the the Portfolio's
capital Market Index can be found in the Statement of Additional Information,
which you can obtain free of charge by calling 800-222-5852.
    



                                      -23-
<PAGE>   26
   
                            FLEXIBLE INCOME PORTFOLIO

- -    OBJECTIVE. This Portfolio seeks to provide a high level of total return
     consisting of reinvestment of income with some capital appreciation. In
     general, relative to the other Portfolios, the Flexible Income Portfolio
     should offer you the potential for a medium to high level of reinvestment
     income and the potential for a low to medium level of capital growth, while
     exposing you to a low to medium level of principal risk.

- -    PRINCIPAL INVESTMENT STRATEGIES. All of the Portfolios allocate their
     assets among certain of the Funds to achieve their objectives. This
     Portfolio generally invests at no more than 30% of its net assets in the
     Equity Funds.

     The Portfolio may invest up to 40% of its assets in each of the Money
     Market, Short-Term High Quality Bond, U.S. Government Securities, Income or
     High Yield Funds. It may also invest up to 30% of its assets in each of the
     Growth & Income, Northwest, Growth and Emerging Growth.


     The Portfolio may also make use of various other principal investment
     strategies, including U.S. GOVERNMENT SECURITIES, short-term debt rated A
     or higher, commercial paper including master notes and bank obligations,
     REPURCHASE AGREEMENTS and STRATEGIC TRANSACTIONS such as futures contracts
     and options.



                               YEARLY PERFORMANCE*

                                   [BAR GRAPH]
<TABLE>
<CAPTION>
              Calendar Year                             Annual Return (%)
              -------------                             -----------------
                 <S>                                          <C>
                 1997                                         11.58
                 1998
</TABLE>




During the periods shown above, the highest quarterly return was ___% (for the
quarter ended _______ __, 19__), and the lowest was ____% (for the quarter ended
_______ __, 19__).


                                PERFORMANCE CHART*



<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR               PAST ONE YEAR                  LIFE OF FUND
PERIODS ENDING DECEMBER 31, 1998)                                              (SINCE 7/25/96)
<S>                                             <C>                            <C>
Class A Shares
Class B Shares
Capital Market Benchmark**
Standard & Poor's 500 Index*
</TABLE>



* Performance information shown for periods prior to November 1, 1996 reflects
the performance of an asset allocation service investing in the Funds and their
predecessors. Because the asset allocation service was not a mutual fund, it was
not subject to certain restrictions applicable to the Portfolio. If it had been,
performance shown might have differed. The Portfolio's performance through
October 31, 1998 benefitted from the agreement of WM Advisors and its affiliates
to limit the Portfolio's expenses.


* This index represents an unmanaged weighted index of 500 industrial,
transportation, utility and financial companies widely regarded by investors as
representative of the stock market.



** This is a blended mix of capital market indices that is intended to
represent a proxy for portfolio performance. The benchmark allocation is as
follows: 40% Lehman Bros Mutual Fund Short (1-5) Gov/Corp Index, 40% Salomon
Bros 90-day T-Bills, 10% Lehman Bros Mortgage Index and 10% S&P 500. A
description of the components of the the Portfolio's Capital Market Index can
be found in the Statement of Additional Information, which you can obtain free 
of charge by calling 800-222-5852.
    



                                      -24-
<PAGE>   27
   
                                INCOME PORTFOLIO

- -    OBJECTIVE. This Portfolio seeks long-term total return through reinvestment
     of current income consistent with preservation of capital. In general,
     relative to the other Portfolios, the Income Portfolio should offer you the
     potential for a high level of income while maintaining principal and
     exposing you to a low level of principal risk.

- -    PRINCIPAL INVESTMENT STRATEGIES. All of the Portfolios allocate their
     assets among certain of the Funds to achieve their objectives. This
     Portfolio generally invests 100% of its net assets in the Fixed-Income
     Funds.

     The Portfolio may invest up to 50% of its assets in each of the Money
     Market, Short-Term High Quality Bond or U.S. Government Securities Funds.
     It may also invest up to 40% of its assets in each of the Income or High
     Yield Funds.


     The Portfolio may also make use of various other principal investment
     strategies, including U.S. GOVERNMENT SECURITIES, short-term debt rated A
     or higher, commercial paper including master notes and bank obligations,
     REPURCHASE AGREEMENTS and STRATEGIC TRANSACTIONS such as futures contracts
     and options.



                               YEARLY PERFORMANCE*

                                   [BAR GRAPH]
<TABLE>
<CAPTION>
              Calendar Year                             Annual Return (%)
              -------------                             -----------------
                 <S>                                          <C>
                 1997                                         7.38
                 1998
</TABLE>



During the periods shown above, the highest quarterly return was ____% (for the
quarter ended _______ __, 19__), and the lowest was ____% (for the quarter ended
_______ __, 19__).


                                PERFORMANCE TABLE*



<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR               PAST ONE YEAR                  LIFE OF FUND
PERIODS ENDING DECEMBER 31, 1998)                                              (SINCE 7/25/96)
<S>                                             <C>                            <C>
Class A Shares
Class B Shares
Capital Market Benchmark**
Standard & Poor's 500 Index*
</TABLE>



* Performance information shown for periods prior to November 1, 1996 reflects
the performance of an asset allocation service investing in the Funds and their
predecessors. Because the asset allocation service was not a mutual fund, it was
not subject to certain restrictions applicable to the Portfolio. If it had been,
performance shown might have differed. The Portfolio's performance through
October 31, 1998 benefitted from the agreement of WM Advisors and its affiliates
to limit the Portfolio's expenses.


* This index represents an unmanaged weighted index of 500 industrial,
transportation, utility and financial companies widely regarded by investors as
representative of the stock market.



** This is a blended mix of capital market indices that is intended to represent
a proxy for portfolio performance. The benchmark allocation is as follows: 20%
Salomon Bros, 90-day T-Bills, 30% Lehman Bros Mutual Fund Short (1-5) Gov/Corp
Index 10% Lehman Bros Mortgages Index and 10% Lehman Bros BAA LT Corporate Bond
Index. A description of the components of the the Portfolio's Capital Market
Index can be found in the Statement of Additional Information, which you can
obtain free of charge by calling 800-222-5852.
    



                                      -25-
<PAGE>   28

                           SUMMARY OF PRINCIPAL RISKS

The value of your investment in a Fund or Portfolio changes with the value of
the investments held by that Fund or Portfolio. Many factors can affect that
value. Factors that may affect a particular Fund or Portfolio as a whole are
called "principal risks." They are summarized in this section. The chart at the
end of this section displays similar information. All Funds and Portfolios are
subject to principal risks. These risks can change over time, because the types
of investments made by the Funds and Portfolios can change over time.
Investments mentioned in this summary and described in greater detail under
"Description of the Funds" or "Common Investment Practices" appear in BOLD TYPE.
Those sections also include more information about the Funds, their investments
and the related risks.

   
- -    MARKET RISK. Each of the Funds and Portfolios is subject to market risk,
     which is the general risk of unfavorable changes in the market value of a
     Fund's portfolio securities. The Equity Funds, by investing in equity
     securities, such as common stock, preferred stock and Convertible
     Securities, are exposed to the risk of changes in the value of equity
     securities. Those risks include the risks of broader market declines as
     well as more specific risks affecting the issuer, such as management
     performance, financial leverage, industry problems and reduced demand for
     the issuer's goods or services.
    

   
- -    Another aspect of market risk is interest rate risk. As interest rates
     rise, your investment in a Fund or Portfolio is likely to be worth less
     because its income-producing equity or debt investments are likely to be
     worth less.
    

   
     Even Funds such as the Short Term High Quality Bond, U.S. Government
     Securities and Target Maturity 2002 Funds are subject to interest rate
     risk, even though they generally invest substantial portions of their
     assets in the highest quality debt securities, such as U.S. GOVERNMENT
     SECURITIES. Interest rate risk is generally greater, however, for Funds
     such as the Tax-Exempt Bond, Income, Growth & Income, High Yield and Growth
     Funds which invest significantly in LOWER-RATED SECURITIES or Comparable
     Unrated Securities.
    

   
     Interest rate risk is generally greater for Funds that invest in debt
     securities with longer maturities. This risk is usually compounded for
     Funds such as the Tax-Exempt Bond, California Municipal, Florida Insured
     Municipal, Income and U.S. Government Securities Funds that invest
     significantly in GOVERNMENT STRIPPED MORTGAGE-BACKED or OTHER ASSET-BACKED
     SECURITIES that may be prepaid. These securities have variable maturities
     that tend to lengthen when that is least desirable - when interest rates
     are rising. Increased market risk is also likely for Funds such as the
     Income, Short Term High Quality Bond and Target Maturity 2002 Funds that
     invest in debt securities paying no interest, such as ZERO-COUPON,
     Principal-Only and Interest-Only Securities.
    

   
- -    CREDIT RISK. Each of the Funds may be subject to credit risk to the extent
     it invests in debt securities. This is the risk that the issuer or the
     guarantor (or, in the case of the California Insured Intermediate Municipal
     Fund and the Florida Insured Municipal Fund, the insurer) of a debt
     security, or the counterparty to any of a Fund's portfolio transactions
     (including without limitation REPURCHASE AGREEMENTS, REVERSE REPURCHASE
     AGREEMENTS, securities loans and other over- the-counter transactions),
     will be unable or unwilling to make timely principal and/or interest
     payments, or to otherwise honor its obligations. Varying degrees of credit
     risk, often reflected in Credit Ratings, apply. Credit risk is particularly
     significant for Funds such as the Income, High Yield, Tax-Exempt Bond, Bond
     & Stock, Growth & Income, Growth and Emerging Growth Funds that invest
     significantly in LOWER-RATED SECURITIES. These securities and similar
     Unrated Securities (commonly known as "junk bonds") have
    


                                      -26-
<PAGE>   29
     speculative elements or are predominantly speculative credit risks. The
     Short Term High Quality Bond, Income, High Yield, Bond & Stock, Growth &
     Income, Growth, Emerging Growth and International Growth Funds which make
     FOREIGN INVESTMENTS denominated in U.S. dollars, are also subject to
     increased credit risk because of the difficulties of requiring foreign
     entities to honor their contractual commitments, and because a number of
     foreign governments and other issuers are already in default. The Money 
     Market Fund may also invest in U.S. dollar denominated foreign securities.

- -    CURRENCY RISK. Funds such as the Money Market, Short Term High Quality
     Bond, Income, High Yield, Bond & Stock, Growth & Income, Growth, Emerging
     Growth and International Growth Funds that invest in securities denominated
     in, and/or receive revenues in, FOREIGN CURRENCIES will be subject to
     currency risk. This is the risk that those currencies will decline in value
     relative to the U.S. Dollar, or, in the case of hedging positions, that the
     U.S. Dollar will decline in value relative to the currency hedged.

   
- -    FOREIGN INVESTMENT RISK. Each of the Funds with FOREIGN INVESTMENTS such as
     the Short Term High Quality Bond, Income, High Yield, Bond & Stock, Growth
     & Income, Growth, Emerging Growth and International Growth Funds, may
     experience more rapid and extreme changes in value than Funds with
     investments solely in securities of U.S. companies. This is because the
     securities markets of many foreign countries are relatively small, with a
     limited number of companies representing a small number of industries.
     Additionally, foreign securities issuers are usually not subject to the
     same degree of regulation as U.S. issuers. Reporting, accounting and
     auditing standards of foreign countries differ, in some cases
     significantly, from U.S. standards. Also, nationalization, expropriation or
     confiscatory taxation, currency blockage, political changes or diplomatic
     developments could adversely affect a Fund's investments in a foreign
     country. In the event of nationalization, expropriation or other
     confiscation, a Fund could lose its entire investment. Adverse developments
     in certain regions, such as Southeast Asia, may adversely affect the
     markets of other countries whose economies appear to be unrelated. The 
     Money Market Fund may also invest in U.S. dollar denominated foreign 
     securities.
    

- -    GEOGRAPHIC CONCENTRATION RISK. Funds such as the Northwest, California
     Municipal, California Insured Intermediate Municipal and the Florida
     Insured Municipal Funds that invest significant portions of their assets in
     concentrated geographic areas like the northwestern United States,
     California or Florida, generally have more exposure to regional economic
     risks than Funds making investments more broadly.

- -    LEVERAGING RISK. When a Fund is BORROWING money or otherwise leveraging its
     portfolio, the value of an investment in that Fund will be more volatile
     and all other risks will tend to be compounded. The Income, Short-Term High
     Quality Bond, U.S. Government Securities, California Municipal, California
     Insured Intermediate Municipal, Florida Insured Municipal, Growth,
     International Growth and Emerging Growth Funds may achieve leverage by
     using REVERSE REPURCHASE AGREEMENTS and/or DOLLAR ROLLS. The Municipal
     Funds, the Fixed-Income Funds, and the Growth & Income Fund may achieve
     leverage through the use of INVERSE FLOATING RATE INSTRUMENTS. Funds such
     as the


                                      -27-
<PAGE>   30

   
     California Money, California Insured Intermediate Municipal, Short Term
     High Quality Bond, Emerging Growth, Growth and International Growth may
     take on leveraging risk by investing collateral from Securities Loans, by
     using Derivatives and by BORROWING money to meet redemption requests.
    

   
- -    CONCENTRATION RISK. Most analysts believe that overall risk can be reduced
     through diversification, while concentration of investments in a small
     number of securities increases risk. Each of the California Money,
     California Municipal, California Insured Intermediate Municipal and Florida
     Insured Municipal Funds is Non-Diversified. This means they can invest a
     greater portion of their assets in a relatively small number of issuers and
     will have greater concentration of risk. Some of those issuers may present
     substantial credit or other risks.
    

   
- -    DERIVATIVES RISK. Each of the Funds, except the Money Funds, may, subject
     to the limitations and restrictions stated elsewhere in this Prospectus and
     the SAI, enter into STRATEGIC TRANSACTIONS involving derivatives such as
     forward contracts, futures contracts, options, swaps, caps, floors and
     collars which are financial contracts whose value depends on, or is derived
     from, the value of an underlying asset, reference rate or index. In
     addition to other risks such as the credit risk of the counterparty,
     derivatives involve the risk of mispricing or improper valuation and the
     risk that changes in the value of the derivative may not correlate
     perfectly with relevant assets, rates and indices.
    

   
- -    LIQUIDITY RISK. Liquidity risk exists when particular investments are
     difficult to purchase or sell, possibly preventing a Fund from selling out
     of these ILLIQUID SECURITIES at an advantageous price. All of the Funds may
     be subject to liquidity risk. Funds that make STRATEGIC TRANSACTIONS or
     FOREIGN INVESTMENTS, or that invest in securities involving substantial
     market and/or credit risk tend to involve greater liquidity risk. In
     addition, liquidity risk increases for Funds that hold RESTRICTED
     SECURITIES.
    


- -    MANAGEMENT RISK. Each Fund is subject to management risk because it is an
     actively managed investment portfolio. The Advisor or sub-advisor (if
     applicable) will apply its investment techniques and risk analyses in
     making investment decisions for the Funds or Portfolios, but there can be
     no guarantee that they will produce the desired results. In some cases
     derivatives and other investments may be unavailable or the Advisor or
     sub-advisor may choose not to use them under market conditions when their
     use would be beneficial to the Funds.

   
    

                                      -28-
<PAGE>   31
   


- -    SMALLER COMPANY RISK. Market risk and liquidity risk are particularly
     pronounced for stocks of companies with relatively Small Market
     Capitalizations. These companies may have limited product lines, markets or
     financial resources or they may depend on a few key employees. The Equity
     Funds, and the Emerging Growth Fund in particular, generally have the
     greatest exposure to this risk.



- -    TAX RISK. Each of the California Money Fund and the Municipal Funds is
     subject to the risk that some or all of the interest the Fund receives
     might become taxable by law or be determined by the Internal Revenue
     Service (or the relevant state tax authority) to be taxable. In this event,
     the value of the Fund's investments would likely fall, and some or all of
     the income distributions paid by the Fund might become taxable. In
     addition, some or all of the income distributions paid by these Funds may
     be subject to federal alternative minimum income tax.


- -    MONEY MARKET RISK. While the Money Funds are designed to be relatively low
     risk investments, they are not entirely free of risk. The Money Funds may
     not be able to maintain a net asset value of $1.00 per share. In addition,
     the Money Funds are still subject to the risk that the value of your
     investment may be eroded over time by inflation.


- -    NON-DIVERSIFICATION RISK. Each of the California Money, California 
     Municipal, California Insured Intermediate Municipal and Florida Insured 
     Municipal Funds is a "non-diversified" fund which means that each of them 
     may invest more of its assets in the securities of fewer issues than other
     mutual funds. To the extent that a Fund invests significantly in the 
     securities of a particular issuer, it may suffer greater losses if the 
     value of such issuer's securities declines.

   
- -    PORTFOLIO REALLOCATION RISK. From time to time, one or more of a
     Portfolio's underlying Funds may experience relatively large investments or
     redemptions due to reallocations or rebalancings by the Portfolios as
     recommended by the Advisor. These transactions will affect such Funds,
     since the Funds that experience redemptions as a result of reallocations or
     rebalancings may have to sell portfolio securities and Funds that receive
     additional cash will have to invest such cash. While it is impossible to
     predict the overall impact of these transactions over time, there could be
     adverse effects on portfolio management to the extent that the Funds may be
     required to sell securities or invest cash at times when they would not
     otherwise do so. These transactions could also have tax consequences if
     sales of securities resulted in gains and could also increase transaction
     costs. The Advisor is committed to minimizing such impact on the Funds to
     the extent it is consistent with pursuing the investment objectives of the
     Portfolios. The Advisor may nevertheless face conflicts in fulfilling its
     responsibilities. The Advisor will at all times monitor the impact on the
     Funds of transactions by the Portfolios.

- -    PORTFOLIO RISK. Each of the Portfolios allocates its assets among the Funds
     as determined by its Advisor and in accordance with the investment
     restrictions discussed above. As a result, the Portfolios share the risks
     of each of the Funds in which they invest, which are described above.

     In particular, the Portfolios may be subject to credit risk. For instance,
     the Strategic Growth Portfolio can invest up to 50% of its assets in each
     of the Growth, Growth & Income and Emerging Growth Funds and up to 25% of
     its assets in the High Yield Fund. Each of these Funds may invest
     significant amounts of its assets in lower-rated securities ("junk bonds").
     The Portfolios may also be exposed to FOREIGN INVESTMENT RISK through
    


                                      -29-
<PAGE>   32
   
     their investments in the Growth or Emerging Growth Funds. In choosing among
     the Portfolios investors should understand the risks of each of the Funds
     and the extent to which each Portfolio invests in each Fund.

     Investing in Funds through the Portfolios involves certain additional
     expenses and tax results that would not be present in a direct investment
     in the Funds. See "Dividends, Capital Gains and Taxes" for additional
     information about tax implications of investing in the Portfolios.

     Under certain circumstances, a Fund may determine to pay a redemption
     request by a Portfolio wholly or partly by a distribution in kind of
     securities from its portfolio, instead of cash. In such cases, the
     Portfolios may hold portfolio securities until the Advisor determines that
     it is appropriate to dispose of such securities.

     The officers, trustees, Advisor, Distributor and transfer agent of the
     Portfolios serve in the same capacities for the Funds. Conflicts may arise
     as these persons and companies seek to fulfill their fiduciary
     responsibilities to the Portfolios and the Funds.
    


                                      -30-
<PAGE>   33
   
                             PRINCIPAL RISKS BY FUND

The following chart summarizes the Principal Risks of each Fund. Risks not
marked for a particular Fund may, however, still apply to some extent to that
Fund at various times.


<TABLE>
<CAPTION>
FUND         MARKET     CREDIT     CURRENCY  FOREIGN    LEVERAGING   GEO-       DERIVA-    LIQUIDITY   MANAGEMENT
             RISK       RISK       RISK      INVEST-    RISK         GRAPHIC    TIVES      RISK        RISK
                                             MENT                    CONCEN-    RISK                                   
                                             RISK                    TRATION                                         
                                                                     RISK
<S>          <C>        <C>        <C>       <C>        <C>          <C>        <C>        <C>         <C>         
Money            X                                                                                                 
Market
Fund 

Tax-             X                                                                                                 
Exempt
Money
Market
Fund

California       X                                                   X                                             
Money Fund

Short            X          X         X          X           X                      X          X            X      
Term
High
Quality
Bond Fund

Target           X          X                    X           X                      X          X            X      
Maturity
2002 Fund

U.S.             X          X                    X           X                      X          X            X      
Government
Securities
Fund

Income           X          X                    X           X                      X          X            X      
Fund

High             X          X         X          X           X                      X          X            X      
Yield
Fund

Tax-             X          X                    X           X                      X          X            X      
Exempt
Bond Fund

California       X          X                    X           X           X          X          X            X 
Municipal
Fund
</TABLE>



<TABLE>
<CAPTION>
FUND           SMALLER     TAX      MONEY      NON-
               COMPANY     RISK     MARKET     DIVERSIFICATION
               RISK                 RISK       RISK
             
<S>            <C>         <C>      <C>        <C>
Money                                   X
Market
Fund

Tax-                          X         X
Exempt
Money
Market
Fund

California                    X         X            X
Money Fund

Short        
Term
High
Quality
Bond Fund

Target       
Maturity
2002 Fund

U.S.         
Government
Securities
Fund

Income       
Fund

High         
Yield
Fund

Tax-                          X
Exempt
Bond Fund

California                    X                      X
Municipal
Fund
</TABLE>
    



                                      -31-
<PAGE>   34


   

<TABLE>
<CAPTION>
FUND         MARKET     CREDIT     CURRENCY  FOREIGN    LEVERAGING   GEO-       DERIVA-    LIQUIDITY   MANAGEMENT
             RISK       RISK       RISK      INVEST-    RISK         GRAPHIC    TIVES      RISK        RISK
                                             MENT                    CONCEN-    RISK                             
                                             RISK                    TRATION                                    
                                                                     RISK
<S>          <C>        <C>        <C>       <C>        <C>          <C>        <C>        <C>         <C>    
California       X                                           X           X          X          X            X 
Insured
Intermediate
Municipal
Fund

Florida          X                                           X           X          X          X            X 
Insured
Municipal
Fund

Bond &           X          X         X          X                                  X          X            X
Stock Fund

Growth           X          X                                X                      X          X            X 
& Income
Fund

Northwest        X          X                                            X          X          X            X 
Fund

Growth           X          X         X          X           X                      X          X            X
Fund

Emerging         X          X         X          X           X                      X          X            X
Growth
Fund

International    X                    X          X           X                      X          X            X 
Growth Fund
</TABLE>


<TABLE>
<CAPTION>
FUND            SMALLER     TAX      MONEY        NON-
                COMPANY     RISK     MARKET       DIVERSIFICATION
                RISK                 RISK         RISK

<S>             <C>         <C>      <C>          <C>
California                     X                       X
Insured
Intermediate
Municipal
Fund

Florida                        X                       X 
Insured
Municipal
Fund
                                                        
Bond &              X
Stock Fund

Growth               X
& Income
Fund

Northwest            X
Fund

Growth               X
Fund

Emerging             X
Growth
Fund

International        X
Growth Fund
</TABLE>
    


                                      -32-
<PAGE>   35
- --------------------------------------------------------------------------------
 
   
                         FEES AND EXPENSES OF THE FUNDS
    
   
                                 AND PORTFOLIOS
    
 
   
This table summarizes the fees and expenses that you may pay if you invest in a
Fund or Portfolio. The Examples on the next two pages are intended to help you
compare the cost of investing in the Funds and Portfolios with the costs of
investing in other mutual funds. The Examples assume that your investment has a
5% return each year, as required by the Securities and Exchange Commission, and
that the Fund's or Portfolio's operating expenses remain the same. Your actual
costs may be higher or lower than those in the Examples.
    
 
   
<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------
                                SHAREHOLDER FEES                            CLASS A         CLASS B
                   (fees paid directly from your investment)             SHARES (in %)   SHARES (in %)
         -----------------------------------------------------------------------------------------------
<S>      <C>                                                             <C>             <C> 
         Maximum sales charge (load) imposed on purchases (as a
         percentage of offering price)
           Equity Funds and Strategic Growth, Conservative Growth and
           Balanced Portfolios                                                5.50            0.00
         -----------------------------------------------------------------------------------------------
           Fixed-Income Funds, Municipal Funds and Flexible Income and
           Income Portfolios                                                  4.50(1)         0.00
         -----------------------------------------------------------------------------------------------
           Money Funds                                                        0.00(2)         0.00
         -----------------------------------------------------------------------------------------------
         Maximum deferred sales charge (load) (as a percentage of
         original purchase price or redemption proceeds, as
         applicable)(5)                                                       0.00(3)         5.00(4)
         -----------------------------------------------------------------------------------------------
         (1) 3.50% for Short Term High Quality Bond Fund and 2.00% for Target Maturity 2002 Fund.
         (2) Regular sales charges apply when Class A shares of a Money Market Fund (on which no sales
             charge was paid at time of purchase) are exchanged for shares of any other Fund.
         (3) Certain investors who purchase Class A shares without paying an initial sales charge may
             be subject to a deferred sales charge of 1.00% on redemptions within the first year or
             0.50% on redemptions within the second year after purchase. Class A shares are not
             otherwise subject to a deferred sales charge.
         (4) The maximum deferred sales charge is imposed on shares redeemed in the first year. For
             shares held longer than one year, the deferred sales charge declines according to the
             schedules set forth under "Buying Class B Shares -- Contingent deferred sales charge" in
             this Prospectus. The maximum deferred sales charge for Class B shares of the Short Term
             High Quality Bond Fund is 4.00%.
         (5) A $10 fee may be charged for redemptions made by wire transfer.
- --------------------------------------------------------------------------------------------------------
</TABLE>
    
 
                                       33
<PAGE>   36
   
<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------------------
 
                                                             ANNUAL FUND
                                                         OPERATING EXPENSES
                                                     (expenses that are deducted
         CLASS A SHARES                                   from Fund assets)
         -----------------------------------------------------------------------------------------------------------
                                                                                  Total
                                                                                 Annual
                                                         Service                  Fund
                                            Management   (12b-1)      Other     Operating      Expense        Net
                                               Fees      Fees(2)    Expenses    Expenses    Reimbursement   Expenses
         -----------------------------------------------------------------------------------------------------------
<S>      <C>                                <C>          <C>        <C>         <C>         <C>             <C>
         Money Market Fund(1)                      %       0.00%          %           %          --%          --%
         -----------------------------------------------------------------------------------------------------------
         Tax-Exempt Money Market Fund(1)                   0.00                   
         -----------------------------------------------------------------------------------------------------------
         California Money Fund(1)                          0.00                   
         -----------------------------------------------------------------------------------------------------------
         Short Term High Quality Bond
         Fund(1)                                           0.25                   
         -----------------------------------------------------------------------------------------------------------
         Target Maturity 2002 Fund(1)                      0.25                   
         -----------------------------------------------------------------------------------------------------------
         U.S. Government Securities Fund(1)                0.25                   
         -----------------------------------------------------------------------------------------------------------
         Income Fund(1)                                    0.25
         -----------------------------------------------------------------------------------------------------------
         High Yield Fund(1,2)                              0.25                   
         -----------------------------------------------------------------------------------------------------------
         Tax-Exempt Bond Fund                              0.25
         -----------------------------------------------------------------------------------------------------------
         California Municipal Fund(1)                      0.25                   
         -----------------------------------------------------------------------------------------------------------
         California Insured Intermediate(1)
         Municipal Fund                                    0.25                   
         -----------------------------------------------------------------------------------------------------------
         Florida Insured Municipal Fund(1)                 0.25                   
         -----------------------------------------------------------------------------------------------------------
         Bond & Stock Fund                                 0.25
         -----------------------------------------------------------------------------------------------------------
         Growth & Income Fund(1)                           0.25                   
         -----------------------------------------------------------------------------------------------------------
         Northwest Fund                                    0.25
         -----------------------------------------------------------------------------------------------------------
         Growth Fund(1)                                    0.25                   
         -----------------------------------------------------------------------------------------------------------
         Emerging Growth Fund(1)                           0.25                   
         -----------------------------------------------------------------------------------------------------------
         International Growth Fund                         0.25
         -----------------------------------------------------------------------------------------------------------
         Strategic Growth Portfolio                        0.25
         -----------------------------------------------------------------------------------------------------------
         Conservative Growth Portfolio                     0.25
         -----------------------------------------------------------------------------------------------------------
         Balanced Portfolio                                0.25
         -----------------------------------------------------------------------------------------------------------
         Flexible Income Portfolio                         0.25                   
         -----------------------------------------------------------------------------------------------------------
         Income Portfolio                                  0.25                   
         -----------------------------------------------------------------------------------------------------------
 
<CAPTION>
- ---  ---------------------------------------------
     EXAMPLES: You would pay the
     following expenses on a $10,000
     investment assuming a 5% annual
     return and redemption at the end of
     each period:
     ---------------------------------------------
 
      One     Three     Five       Ten
     Year     Years     Years     Years
     ---------------------------------------------
<S>   <C>     <C>       <C>       <C>      <C> <C>
      $       $         $         $
     ---------------------------------------------
     ---------------------------------------------
     ---------------------------------------------
     ---------------------------------------------
     ---------------------------------------------
     ---------------------------------------------
     ---------------------------------------------
                        N/A       N/A
     ---------------------------------------------
     ---------------------------------------------
     ---------------------------------------------
     ---------------------------------------------
     ---------------------------------------------
     ---------------------------------------------
     ---------------------------------------------
     ---------------------------------------------
     ---------------------------------------------
     ---------------------------------------------
     ---------------------------------------------
     ---------------------------------------------
     ---------------------------------------------
     ---------------------------------------------
     ---------------------------------------------
     ---------------------------------------------
</TABLE>
    
 
   
    
    
   
    
    
   
    
    
   
    
    
   
    
    
   
    
    
   
    
    
   
    
    
   
    (1) Reflects the Advisors designation to limit Total Award Fund Operating
        Expenses as described on page   .
    
   
    (2) Because the High Yield Fund has not completed its first full fiscal
        year, the expenses for the 5-year and 10-year periods are not
        applicable.
    
- --------------------------------------------------------------------------------
 
                                       34
<PAGE>   37
   
<TABLE>
<CAPTION>
- ---------------------------------------------------------------------------------------------------------------
 
                                                                   ANNUAL FUND
                                                                OPERATING EXPENSES
                                                           (expenses that are deducted
     CLASS B SHARES                                             from Fund assets)
     ----------------------------------------------------------------------------------------------------------
                                                Distribution                 Total
                                                    and                     Annual
                                                  Service                    Fund
                                   Management     (12b-1)        Other     Operating      Expense        Net
                                      Fees          Fees       Expenses    Expenses    Reimbursement   Expenses
     ----------------------------------------------------------------------------------------------------------
<S>  <C>                           <C>          <C>            <C>         <C>         <C>             <C>
     Money Market Fund                              1.00%                                      %             %
     ----------------------------------------------------------------------------------------------------------
     Tax-Exempt Money Market Fund                   1.00
     ----------------------------------------------------------------------------------------------------------
     California Money Fund                          1.00
     ----------------------------------------------------------------------------------------------------------
     Short Term High Quality Bond
     Fund                                           1.00
     ----------------------------------------------------------------------------------------------------------
     U.S. Government Securities
     Fund                                           1.00
     ----------------------------------------------------------------------------------------------------------
     Income Fund                                    1.00
     ----------------------------------------------------------------------------------------------------------
     High Yield Fund(1,4)                           1.00
     ----------------------------------------------------------------------------------------------------------
     Tax-Exempt Bond Fund                           1.00
     ----------------------------------------------------------------------------------------------------------
     California Municipal Fund                      1.00
     ----------------------------------------------------------------------------------------------------------
     California Insured
     Intermediate Municipal Fund                    1.00
     ----------------------------------------------------------------------------------------------------------
     Florida Insured Municipal
     Fund                                           1.00
     ----------------------------------------------------------------------------------------------------------
     Bond & Stock Fund                              1.00
     ----------------------------------------------------------------------------------------------------------
     Growth & Income Fund                           1.00
     ----------------------------------------------------------------------------------------------------------
     Northwest Fund                                 1.00
     ----------------------------------------------------------------------------------------------------------
     Growth Fund                                    1.00
     ----------------------------------------------------------------------------------------------------------
     Emerging Growth Fund                           1.00
     ----------------------------------------------------------------------------------------------------------
     International Growth Fund                      1.00
     ----------------------------------------------------------------------------------------------------------
     Strategic Growth Portfolio                     1.00
     ----------------------------------------------------------------------------------------------------------
     Conservative Growth
     Portfolio                                      1.00
     ----------------------------------------------------------------------------------------------------------
     Balanced Portfolio                             1.00
     ----------------------------------------------------------------------------------------------------------
     Flexible Income Portfolio                      1.00
     ----------------------------------------------------------------------------------------------------------
     Income Portfolio                               1.00
     ----------------------------------------------------------------------------------------------------------
 
<CAPTION>
- ---------------------------------------------  ---------------------------------------------------------------------------
                                               EXAMPLES: You would pay the following
                                               expenses on a $10,000 investment assuming a
                                               5% annual return and either
                                               1) redemption at the end of each period or
     CLASS B SHARES                            2) no redemption:
     ----------------------------------------  -----------------------------------------------------------------------
 
                                                             (1)                               (2)
                                   Management  One    Three   Five      Ten      One    Three   Five      Ten
                                      Fees     Year   Years   Years   Years(3)   Year   Years   Years   Years(3)
     ----------------------------------------  -----------------------------------------------------------------------
<S>                                            <C>    <C>     <C>     <C>        <C>    <C>     <C>     <C>        <C> <C>
     Money Market Fund
     ----------------------------------------------------------------------------------------------------------
     Tax-Exempt Money Market Fund
     ----------------------------------------------------------------------------------------------------------
     California Money Fund
     ----------------------------------------------------------------------------------------------------------
     Short Term High Quality Bond
     Fund
     ----------------------------------------------------------------------------------------------------------
     U.S. Government Securities
     Fund
     ----------------------------------------------------------------------------------------------------------
     Income Fund
     ----------------------------------------------------------------------------------------------------------
     High Yield Fund(1,4)                                      N/A       N/A                     N/A       N/A
     ----------------------------------------------------------------------------------------------------------
     Tax-Exempt Bond Fund
     ----------------------------------------------------------------------------------------------------------
     California Municipal Fund
     ----------------------------------------------------------------------------------------------------------
     California Insured
     Intermediate Municipal Fund
     ----------------------------------------------------------------------------------------------------------
     Florida Insured Municipal
     Fund
     ----------------------------------------------------------------------------------------------------------
     Bond & Stock Fund
     ----------------------------------------------------------------------------------------------------------
     Growth & Income Fund
     ----------------------------------------------------------------------------------------------------------
     Northwest Fund
     ----------------------------------------------------------------------------------------------------------
     Growth Fund
     ----------------------------------------------------------------------------------------------------------
     Emerging Growth Fund
     ----------------------------------------------------------------------------------------------------------
     International Growth Fund
     ----------------------------------------------------------------------------------------------------------
     Strategic Growth Portfolio
     ----------------------------------------------------------------------------------------------------------
     Conservative Growth
     Portfolio
     ----------------------------------------------------------------------------------------------------------
     Balanced Portfolio
     ----------------------------------------------------------------------------------------------------------
     Flexible Income Portfolio
     ----------------------------------------------------------------------------------------------------------
     Income Portfolio
     ----------------------------------------------------------------------------------------------------------
</TABLE>
    
 
   
  (1) Reflects the Advisor's obligation to limit Total Annual Fund Operating
      Expenses as described on page   .
    
   
  (2) 0.25% of the 12b-1 fees shown represent servicing fees which are paid to
      the Distributor. Long-term Class B shareholders may pay more than the
      sales charge paid by long-term Class A shareholders.
    
  (3) Class B shares convert to Class A shares after eight years; accordingly,
      the expense amounts for years nine and ten are based on Class A shares.
   
  (4) Because the High Yield Fund has not completed its first full fiscal year,
      the expenses for the 5-year and 10-year periods are not applicable.
    
- --------------------------------------------------------------------------------
 
                                       35
<PAGE>   38
 
   
                            DESCRIPTION OF THE FUNDS
    
 
   
This section provides a more complete description of the principal investment
strategies and risks of each Fund and Portfolio. The "Common Investment
Practices" section that follows provides additional information about the
principal investment strategies of the Funds and identifies the Funds and
Portfolios that may engage in such practices to a significant extent. You can
find additional descriptions of the Funds' strategies and risks in the Statement
of Additional Information ("SAI"). Except for policies explicitly identified as
"fundamental" in this Prospectus or the SAI, the investment objectives and
investment policies set forth in this Prospectus and the SAI are not fundamental
and may be changed at any time without shareholder consent. Except as otherwise
indicated, all policies and limitations are considered at the time of purchase;
the sale of securities is not required in the event of a subsequent change in
valuation or other circumstances.
    
 
MONEY FUNDS
 
   
The Money Funds invest only in U.S. dollar-denominated short-term, money market
securities. They will only purchase obligations issued or guaranteed by the U.S.
Government, its agencies or instrumentalities or comparable securities that are,
or have issuers that are,
    
 
   
- - rated by at least two nationally recognized statistical rating organizations
  ("NRSROs"), such as Standard & Poor's ("S&P") or Moody's Investors Service,
  Inc. ("Moody's"), in one of the two highest rating categories for short-term
  debt securities,
    
 
   
- - rated in one of the two highest categories for short-term debt by the only
  NRSRO that has issued a rating, or
    
 
   
- - if not so rated, are determined to be of comparable quality.
    
 
   
A description of the rating systems of S&P and Moody's is contained in Appendix
A to this Prospectus and in the SAI. At the time of investment, no security
purchased by a Money Fund (except U.S. Government Securities subject to
repurchase agreements and variable rate demand notes) will have a maturity
exceeding 397 days, and each Money Fund's average portfolio maturity will not
exceed 90 days. The Money Funds will attempt to maintain a stable net asset
value ("NAV") of $1.00, but there can be no assurance that any Money Fund will
be able to do so.
    
 
MONEY MARKET FUND.  To accomplish its objective, the Money Market Fund invests
solely in money market instruments that are selected from the following six
general categories:
 
   
- - U.S. Government Securities;
    
 
   
- - short-term commercial notes (including asset-backed securities) issued
  directly by U.S. and foreign businesses, banking institutions, financial
  institutions (including brokerage, finance and insurance companies) and state
  and local governments and municipalities to finance short-term cash needs;
    
 
   
- - obligations of U.S. and foreign banks with assets of more than $500 million;
    
 
   
- - securities issued by foreign governments, their agencies or instrumentalities
  or by supranational entities;
    
 
   
- - short-term corporate obligations rated in one of the two highest rating
  categories by Moody's or S&P; and
    
 
   
- - repurchase agreements.
    
 
   
TAX-EXEMPT MONEY MARKET FUND.  The Tax-Exempt Money Market Fund invests
primarily in a diversified selection of Municipal Obligations, the income from
which is exempt from federal income tax. These obligations include fixed income
obligations issued by states, counties, cities or other governmental bodies that
generate income exempt from federal income tax. Short-term Municipal Obligations
may include, but are not limited to, tax anticipation notes, bond anticipation
notes, revenue anticipation notes and project notes, or other forms of
short-term municipal loans and obligations. Under normal market conditions, the
Fund will not invest more than 20% of its assets in obligations that pay
interest subject to alternative minimum tax ("AMT-Subject Bonds").
    
 
   
For temporary defensive purposes, the Fund may invest more than 20% of its
assets in instruments eligible for purchase by the Money Market Fund, which may
produce income that is not exempt from federal income taxes.
    
 
The Fund may also invest in variable rate demand obligations, stand-by
commitments, when-issued securities and forward commitments.
 
                                       36
<PAGE>   39
 
   
CALIFORNIA MONEY FUND.  To accomplish its objective, the California Money Fund
invests in a portfolio of Municipal Obligations. It is a fundamental policy of
the Fund to invest, under normal market conditions, at least 80% of its total
assets in Municipal Obligations. The Fund normally invests at least 80% of its
total assets in Municipal Obligations issued by the State of California and its
political subdivisions and certain other governmental issuers (such as the
Commonwealth of Puerto Rico), which produce income that is exempt from
California state personal income tax. The Fund may also invest in AMT-Subject
Bonds.
    
 
The Fund may also invest in variable rate demand obligations, stand-by
commitments, when-issued securities and forward commitments.
 
   
For temporary defensive purposes, the Fund may invest more than 20% of its
assets in instruments eligible for purchase by the Money Market Fund, which may
produce income that is not exempt from federal income taxes or California
personal income tax.
    
 
FIXED-INCOME FUNDS
 
   
SHORT TERM HIGH QUALITY BOND FUND.  Although the Short Term High Quality Bond
Fund maintains a dollar-weighted average portfolio maturity of three years or
less, it may hold individual securities with remaining maturities of more than
three years. [For purposes of the weighted average maturity calculation, a
mortgage instrument's average life will be considered to be its maturity, and
the date on which the interest rate of a floating rate security can next change
will be used in place of its maturity date.]
    
 
   
[The Fund will invest substantially all of its assets in debt securities that,
at the time of purchase, are rated in one of the top four rating categories by
one or more NRSROs or, if unrated, are judged to be of comparable quality by the
Advisor ("investment grade" securities).] All debt securities purchased by the
Fund will be investment grade at the time of purchase. Under normal market
conditions, the Fund will invest at least 65% of its total assets in U.S.
Government securities, corporate debt obligations or mortgage-related securities
rated in one of the two highest categories by an NRSRO or determined by the
Advisor to be of comparable quality.
    
 
The Fund may invest in obligations issued or guaranteed by domestic and foreign
governments and government agencies and instrumentalities and in high-grade
corporate debt obligations, such as bonds, debentures, notes, equipment lease
and trust certificates, mortgage-backed securities, collateralized mortgage
obligations and asset-backed securities.
 
   
The Fund may invest up to 10% of its assets in foreign fixed-income securities,
primarily bonds of foreign governments or their political subdivisions, foreign
companies and supranational organizations, including non-U.S. dollar-denominated
securities and U.S. dollar-denominated debt securities issued by foreign issuers
and foreign branches of U.S. banks. Investment in foreign securities is subject
to special risks. [The Fund may invest up to 5% of its assets in preferred
stock.] The Fund may engage in certain options transactions, enter into
financial futures contracts and related options for the purpose of portfolio
hedging and enter into currency forwards or futures contracts and related
options for the purpose of currency hedging. The Fund may invest in certain
illiquid investments, such as privately placed obligations, including restricted
securities. The Fund may invest up to 10% of its assets in securities of
unaffiliated mutual funds. The Fund may borrow money or enter into reverse
repurchase agreements or dollar roll transactions in the aggregate up to 33 1/3%
of its total assets. The Fund may invest up to 25% of its total assets in
asset-backed securities, which represent a participation in, or are secured by
and payable from, a stream of payments generated by particular assets, most
often a pool of similar assets.
    
 
   
TARGET MATURITY 2002 FUND.  The Target Maturity 2002 Fund will invest at least
90% of its net assets in zero-coupon U.S. Treasury securities maturing during
2002. Generally, the Fund will endeavor to purchase those zero-coupon securities
that mature toward the end of 2002. Until the Fund's target maturity date,
December 31, 2002, the Fund may also invest up to 10% of its net assets in
coupon-bearing (income-producing) U.S. Treasury securities maturing on or before
that date and money market instruments. If the Advisor determines that the
desired zero-coupon securities are not otherwise readily available for purchase,
the Fund may invest in zero-coupon and income-producing U.S. Government
Securities maturing on or before December 31, 2002. The Fund may also invest in
cash and cash equivalents for temporary defensive purposes.
    
 
                                       37
<PAGE>   40
 
   
The market value of fixed-income securities held by the Fund and, consequently,
the Fund's NAV, can be expected to vary inversely to changes in prevailing
interest rates. Consequently, redemptions made prior to December 31, 2002 may
result in substantial capital gains or losses.
    
 
   
To the extent that the Fund holds zero-coupon securities that mature prior to
December 31, 2002, the proceeds of these securities at their maturity will be
reinvested in short-term coupon-bearing U.S. Treasury securities or money market
instruments until that date. Therefore, towards the end of the target maturity
year, 2002, the percentage of the Fund's assets invested in coupon-bearing U.S.
Treasury securities and money market instruments may increase up to 100%. After
December 31, 2002, the Fund intends to remain open, with all its assets invested
in money market instruments and U.S. Treasury securities with maturities of up
to three years. The Fund will then be managed as a relatively short-term bond
fund and the normal risks of a bond fund will apply.
    
 
   
To approximate the return you would receive if you purchased zero-coupon
securities directly, the Advisor manages the Fund to track as closely as
possible the price behavior of zero-coupon securities maturing towards the end
of 2002. To correct for factors such as shareholder purchase and redemption
activity (and related transaction costs) that differentiate investing in a
portfolio of zero-coupon securities from investing directly in a zero-coupon
security, the Advisor executes portfolio transactions necessary to accommodate
net shareholder activity each business day.
    
 
   
By adhering to these investment parameters, the Advisor expects that if you hold
your shares and do not make any redemptions until December 31, 2002, and you
reinvest all dividends and capital gain distributions, you will realize a
maturity value that does not differ substantially from the anticipated value at
maturity, as calculated on the purchase date. There can be no assurance,
however, that these objectives will be achieved. Furthermore, if you do not
reinvest all dividends and capital gain distributions, then the AVM cannot be
estimated accurately.
    
 
   
The Fund's AVM is calculated by the Advisor each day the Fund is open for
business. It may vary from day-to-day due to redemptions and distributions, as
well as transaction costs, interest rate changes, and the Advisor's efforts to
improve total return by taking advantage of market opportunities.
    
 
   
Relatively few mutual funds with investment objectives and policies similar to
those of the Fund have reached their target maturity date. As a result, there is
relatively little experience regarding the types of risk involved in investing
in the Fund.
    
 
   
U.S. GOVERNMENT SECURITIES FUND.  The U.S. Government Securities Fund invests
primarily in a selection of obligations of the U.S. Government and its agencies.
The Fund may also invest in collateralized mortgage obligations or repurchase
agreements which are secured by those types of obligations. It is a fundamental
policy of the Fund to invest only in the following types of securities: (1) U.S.
Government securities, including mortgage-backed securities; (2) obligations
secured by the full faith and credit of the U.S. Government or its
instrumentalities; and (3) collateralized mortgage obligations and repurchase
agreements which are secured by obligations identified in (1) and (2) above. The
Fund [may borrow up to 5% of its total net assets for emergency, non-investment
purposes] and may enter into dollar roll transactions.
    
 
   
INCOME FUND.  The Income Fund invests most of its assets in
    
 
   
- - debt and convertible debt securities;
    
 
   
- - U.S. Government Securities, including mortgage-backed securities issued by the
  Government National Mortgage Association ("GNMA"), Federal National Mortgage
  Association ("FNMA"), and Federal Home Loan Mortgage Corporation ("FHLMC") or
  similar government agencies;
    
 
   
- - obligations of U.S. banks that belong to the Federal Reserve System;
    
 
   
- - preferred stocks and convertible preferred stocks;
    
 
   
- - the highest grade commercial paper as rated by S&P or Moody's; and
    
 
   
- - deposits in U.S. banks.
    
 
   
The Fund may also invest in securities denominated in foreign currencies and
receive interest, dividends and sale proceeds in foreign currencies. The Fund
may engage in foreign currency exchange transactions for hedging purposes in
connection with the purchase and sale of foreign securities or to protect
against changes in the value of specific securities held by the Fund. It may
also purchase and sell currencies on a spot (cash) basis, enter into forward
contracts to purchase or sell
    
                                       38
<PAGE>   41
 
   
foreign currencies at a future date, and buy and sell foreign currency futures
contracts. The Fund [may borrow up to 5% of its total net assets for emergency,
non-investment purposes, and] may enter into dollar roll transactions. The Fund
may purchase securities of issuers which deal in real estate or securities which
are secured by interests in real estate, and it may acquire and dispose of real
estate or interests in real estate acquired through the exercise of its rights
as a holder of debt obligations secured by real estate or interests therein. The
Fund may also purchase and sell interest rate futures and options. The Fund may
invest up to 35% of its assets in lower-rated fixed-income securities (sometimes
called "junk bonds").
    
 
   
HIGH YIELD FUND.  The High Yield Fund invests, under normal market conditions,
at least 65% of its assets in a diversified portfolio of fixed income securities
(including debt securities, convertible securities and preferred stocks) rated
lower than BBB by S&P or Baa by Moody's or of equivalent quality as determined
by the Advisor. The remainder of the Fund's assets may be invested in any other
securities the Advisor believes are consistent with the Fund's objective. These
may include higher rated fixed-income securities, common stocks and other equity
securities. The Fund may also invest in securities of foreign issuers and engage
in hedging strategies involving options.
    
 
MUNICIPAL FUNDS
 
   
Each of the Municipal Funds and the California Money Fund, invests most of its
assets in Municipal Obligations. Current federal income tax laws limit the types
and volume of bonds qualifying for the federal income tax exemption of interest
which may affect the ability of a Fund to purchase sufficient amounts of
tax-exempt securities.
    
 
   
TAX-EXEMPT BOND FUND.  The Tax-Exempt Bond Fund will invest at least 80% of its
assets in Municipal Obligations, including inverse floating rate obligations,
under normal market conditions.
    
 
   
The Fund specifically limits these investments to: municipal bonds, municipal
notes and securities of unaffiliated tax-exempt mutual funds. The Fund also may
invest up to 35% of its assets in lower-rated securities.
    
 
In adverse markets, the Fund may seek to protect its investment position by
investing up to 50% of its portfolio in taxable short-term investments such as:
 
   
- - U.S. Government securities;
    
 
   
- - commercial paper rated in the highest grade by either S&P or Moody's;
    
 
   
- - obligations of U.S. banks;
    
 
   
- - time or demand deposits in U.S. banks; and
    
 
   
- - repurchase agreements relating to municipal securities or any of the foregoing
  taxable instruments.
    
 
   
Interest income from these investments that is distributed to you by the Fund
may be taxable.
    
 
   
The Fund may also purchase and sell interest rate futures and options. The Fund
may also invest in AMT-Subject Bonds, although, so long as its name includes the
words "tax-exempt" and the SEC so requires, those investments will be limited to
20% of the Fund's total assets.
    
 
   
CALIFORNIA MUNICIPAL FUND.  The California Municipal Fund invests primarily in
intermediate- and long-term California municipal obligations which are Municipal
Obligations that generate interest which is exempt from California state
personal income tax. It is a fundamental policy of the Fund that, under normal
market conditions, at least 80% of its total assets will be invested in these
obligations. The Fund may also invest in AMT-Subject Bonds.
    
 
   
The Fund will invest primarily in investment grade Municipal Obligations. The
Fund may also invest in inverse floating rate obligations, which are generally
more volatile than other types of Municipal Obligations.
    
 
The Fund may, under normal circumstances, invest up to 20% of its assets in
 
   
- - Municipal Obligations that are not exempt from California personal income tax;
    
 
   
- - short-term Municipal Obligations;
    
 
   
- - taxable cash equivalents, including short-term U.S. Government securities,
  certificates of deposit and bankers' acceptances, commercial paper rated
  Prime-1 by Moody's or A-1+ or A-1 by S&P, repurchase agreements (collectively
  "Short-Term Instruments"); and
    
 
                                       39
<PAGE>   42
 
   
- - securities of money market mutual funds (subject to the limitations set forth
  under "Common Investment Practices").
    
 
   
The Fund may, for temporary defensive purposes, invest in these securities
without limitation. Also, as a non-diversified investment company under the 1940
Act, the Fund may invest a larger portion of its assets in the securities of a
small number of issuers.
    
 
   
CALIFORNIA INSURED INTERMEDIATE MUNICIPAL FUND. The California Insured
Intermediate Municipal Fund will invest primarily in insured intermediate-term
California Municipal Obligations. It is a fundamental policy of the Fund that it
will invest at least 80% of the value of its total assets in Insured California
Municipal Obligations (except when maintaining a temporary defensive position).
The weighted average effective maturity of the securities in which the Fund
invests will be ten years or less. The maximum effective maturity (the maturity
date without regard to call provisions, except that for pooled single family
mortgage securities effective maturity is the average life of the underlying
mortgage obligations) of any Municipal Obligation in which the Fund invests will
be fifteen years.
    
 
   
All of the Municipal Obligations in which the Fund invests, taking into account
any insurance, are investment grade securities. For more information, see "About
Bond Insurance" below.
    
 
   
The Fund may invest without limitation in AMT-Subject Bonds.
    
 
   
Under normal market conditions, the Fund may invest up to 20% of its assets in
    
 
   
- - uninsured Municipal Obligations;
    
 
   
- - Municipal Obligations that are not exempt from California personal income tax;
  and
    
 
   
- - short-term Municipal Obligations and taxable cash equivalents, including
  Short-Term Instruments and securities of unaffiliated money market mutual
  funds (subject to the limitations set forth under "Common Investment
  Practices") and may, for temporary defensive purposes, invest in these
  securities without limitation.
    
 
   
In addition, the Fund may invest in inverse floating rate obligations. The Fund
may engage in hedging transactions through the use of financial futures and
options thereon. It may also purchase and sell securities on a when-issued or
forward commitment basis, invest in mortgage-backed securities, enter into
repurchase agreements, invest in stand-by commitments and lend portfolio
securities. The Fund may invest in floating rate and variable rate obligations,
including participation interests therein [(referred to collectively as "Hedging
Transactions").]
    
 
   
FLORIDA INSURED MUNICIPAL FUND.  The Florida Insured Municipal Fund will invest
primarily in insured, intermediate- and long-term Municipal Obligations issued
by the State of Florida and its political subdivisions. The Fund will invest
primarily in investment-grade Municipal Obligations. It is a fundamental policy
of the Fund that it will invest at least 80% of the value of its total assets
(except when maintaining a temporary defensive position) in insured Florida
Municipal Obligations. See "About Bond Insurance" below. The Fund may invest
without limitation in AMT-Subject Bonds. The Fund may also invest in inverse
floating rate obligations.
    
 
   
The Fund may invest up to 20% of its total assets in:
    
 
   
- - uninsured Municipal Obligations;
    
 
   
- - Municipal Obligations that are not exempt from Florida intangible personal
  property tax; and
    
 
   
- - Short-Term Instruments and securities of unaffiliated money market mutual
  funds and, for temporary defensive purposes, invest in these securities
  without limitation.
    
 
   
Florida does not impose an income tax on individuals. Distributions of
investment income and capital gains by the Fund will be subject to Florida
corporate income taxes. Florida imposes a tax on intangible personal property
owned by Florida residents. Based on a ruling the Fund has received from the
Florida Department of Revenue, if the Fund's assets consist, on the last
business day of the calendar year, solely of assets exempt from Florida
intangible personal property tax, shares of the Fund owned by Florida residents
will be exempt from Florida intangible personal property tax. Assets exempt from
Florida intangible personal property tax include Florida Municipal Obligations;
obligations of the U. S. Government or its agencies; and cash.
    
 
ABOUT BOND INSURANCE.  The insured Municipal Obligations in which the California
Insured Intermediate Municipal and Florida Insured Municipal Funds will invest
and the other Municipal Funds may invest are
 
                                       40
<PAGE>   43
 
   
insured under insurance policies that relate to the specific Municipal
Obligation in question and that are issued by an insurer having a claims-paying
ability rated AAA by S&P or Aaa by Moody's. This insurance is generally
non-cancelable and will continue in force so long as the Municipal Obligations
are outstanding and the insurer remains in business.
    
 
   
The insured Municipal Obligations are insured as to the scheduled payment of all
installments of principal and interest as they fall due. The insurance covers
only credit risk and therefore does not guarantee the market value of the
obligations in a Fund's investment portfolio or a Fund's NAV. The Fund's NAV
will continue to fluctuate in response to fluctuations in interest rates. A
Fund's investment policy requiring investment in insured Municipal Obligations
will not affect the Fund's ability to hold its assets in cash or to invest in
escrow-secured and defeased bonds or in certain short-term tax-exempt
obligations, or affect its ability to invest in uninsured taxable obligations
for temporary or liquidity purposes or on a defensive basis.
    
 
EQUITY FUNDS
 
   
BOND & STOCK FUND.  Under normal market conditions, at least 25% of the Bond &
Stock Fund's assets will be invested in fixed-income securities, including
preferred stocks and that portion of the value of convertible securities which
is not attributable to a conversion feature. The Fund may invest in money market
instruments for temporary or defensive purposes. The Fund may invest in
fixed-income securities of any maturity, including mortgage-backed securities,
U.S. Government securities and asset-backed securities, and may also invest up
to 35% of its assets, in below investment grade bonds (sometimes called junk
bonds). The Fund may purchase or sell U.S. Government securities or
collateralized mortgage obligations on "when-issued" or "delayed-delivery" basis
in an aggregate of up to 20% of the market value of its total net assets. The
Fund may invest up to 25% of its assets in real estate investment trusts, known
as "REITs." The Fund may write (sell) covered call options. The Fund may invest
up to 25% of its assets in U.S. dollar-denominated securities of foreign
issuers.
    
 
   
GROWTH & INCOME FUND.  The Growth & Income Fund invests primarily in common
stocks. The Fund may also invest in money market instruments for temporary or
defensive purposes. To limit risk, repurchase agreements maturing in more than
seven days will not exceed 10% of the Fund's total assets. The Fund may invest
up to 25% of its assets in REITs. The Fund may invest in fixed-income securities
of any maturity, including mortgage-backed securities, and may invest up to 35%
of its assets in below investment grade fixed-income securities.
    
 
The Fund may purchase or sell U.S. Government securities or collateralized
mortgage obligations on a "when-issued" or "delayed-delivery" basis in an
aggregate up to 20% of the market value of its total assets minus total
liabilities (except for the obligations created by these commitments). The Fund
may write (sell) covered call options. The Fund may invest up to 25% of its
assets in U.S. dollar-denominated securities of foreign issuers.
 
   
NORTHWEST FUND.  The Northwest Fund invests in common stocks of companies
located or doing business in the Northwest states of Alaska, Idaho, Montana,
Oregon and Washington. Under normal circumstances, at least 65% of the Fund's
total assets will be invested in companies whose principal executive offices are
located in one of those states.
    
 
The Fund is permitted to invest in money market instruments for temporary or
defensive purposes. The Fund may invest up to 25% of its assets in REITs, and
may write (sell) covered call options.
 
Because the Fund concentrates its investments in companies located or doing
business in the Northwest, the Fund is not intended as a complete investment
program, and could be adversely impacted by economic trends within the
five-state area.
 
   
GROWTH FUND.  The Growth Fund invests primarily in common stocks believed to
have significant appreciation potential. The Fund also may invest in debt
securities, bonds, convertible bonds, preferred stock and convertible preferred
stock, including up to 35% of its assets in non-investment-grade debt
securities.
    
 
   
The Fund may invest up to 25% of its assets in foreign securities, usually
foreign common stocks[, and up to 5% of its assets in securities of companies in
(or governments of) developing or emerging countries (sometimes referred to as
"emerging markets").] The Fund may also engage in certain options transactions,
enter into financial futures contracts and related options for the purpose of
portfolio hedging and enter into currency forwards or futures
    
 
                                       41
<PAGE>   44
 
contracts and related options for the purpose of currency hedging.
 
   
EMERGING GROWTH FUND.  The Emerging Growth Fund invests primarily in equity
securities of companies with market capitalization of less than $1.4 billion at
the time of purchase. In addition to common stock, the Fund's equity securities
may include convertible bonds, convertible preferred stock and warrants to
purchase common stock, as well as cash and cash equivalents. The Fund may invest
up to 25% of its assets in securities of foreign issuers and up to 5% of its
assets in securities in developing or emerging countries. The Fund may invest up
to 35% of its assets in non-investment-grade debt securities if the Advisor
believes that doing so will be consistent with the goal of capital appreciation.
    
 
   
INTERNATIONAL GROWTH FUND.  The International Growth Fund invests primarily in
equity securities of issuers located in foreign countries that the Fund's
sub-advisor believes present attractive investment opportunities. Criteria for
determining the appropriate distribution of investments among various countries
and regions include prospects for relative economic growth, expected levels of
inflation, government policies influencing business conditions, the outlook for
currency relationships and the range of investment opportunities available to
international investors. The relative strength or weakness of a particular
country's currency or economy may dictate whether securities of issuers located
in such country will be purchased or sold. The Fund may invest without limit in
the securities of issuers located in any one country (except as provided below
with respect to emerging markets countries). The Fund will emphasize established
companies, although it may invest in companies of varying sizes as measured by
assets, sales and capitalization.
    
 
The Fund invests in common stock and may invest in other securities with equity
characteristics, such as trust or limited partnership interests, preferred
stock, rights and warrants. The Fund may also invest in convertible securities.
The Fund invests in securities listed on foreign or domestic securities
exchanges and securities traded in foreign or domestic over-the-counter markets,
and may invest in restricted or unlisted securities.
 
   
The Fund intends to stay fully invested in the securities described above to the
extent practical. Fund assets may be invested in short-term debt instruments to
meet anticipated day-to-day operating expenses, and for temporary defensive
purposes. In addition, when the Fund experiences large cash inflows, it may hold
short-term investments until desirable equity securities become available. These
short-term instruments are generally rated A or higher by Moody's or S&P, or, if
unrated, of comparable quality in the opinion of the Fund's sub-advisor.
    
 
   
The Fund may invest up to 30% of its assets in the securities of companies in or
governments of developing or emerging markets, provided that no more than 5% of
the Fund's total assets are invested in any one emerging markets country. For
temporary defensive purposes, the Fund may invest a major portion of its assets
in securities of U.S. issuers. [Furthermore, the Fund may invest up to 5% of its
total assets in investment grade corporate debt securities having maturities
longer than one year, including Euro-currency instruments and securities.]
    
 
STRATEGIC ASSET MANAGEMENT PORTFOLIOS
 
   
The Portfolios offer you the opportunity to pursue a variety of specially
constructed asset allocation strategies. The Portfolios are designed for
long-term investors seeking total return for tax-advantaged retirement and other
long-term investment or savings accounts.
    
 
   
In order to achieve its investment objective, each Portfolio typically allocates
its assets, within predetermined percentage ranges, among certain of the Funds.
Even so, the Portfolios may temporarily exceed one or more of the applicable
percentage limits for short periods. The percentages reflect the extent to which
each Portfolio will normally invest in the particular market segment represented
by each underlying Fund, and the varying degrees of potential investment risk
and reward represented by each Portfolio's investments in those market segments
and their corresponding Funds. The Advisor may alter these percentage ranges
when it deems appropriate. The assets of each Portfolio will be allocated among
the Funds in accordance with its investment objective, the Advisor's outlook for
the economy and the financial markets, and the relative market valuations of the
Funds.
    
 
   
In addition, in order to meet liquidity needs or for temporary defensive
purposes, each Portfolio may invest, without limit, directly in cash stock or
bond
    
 
                                       42
<PAGE>   45
 
index futures and options thereon and the following short-term instruments:
 
   
- - short-term obligations of the U.S. Government, its agencies,
  instrumentalities, authorities or political subdivisions;
    
 
   
- - other short-term debt securities rated A or higher by Moody's or S&P, or if
  unrated, of comparable quality in the opinion of the Advisor;
    
 
   
- - commercial paper, including master notes;
    
 
   
- - bank obligations, including negotiable certificates of deposit, time deposits
  and bankers' acceptances; and
    
 
   
- - repurchase agreements.
    
 
At the time a Portfolio invests in any commercial paper, bank obligations or
repurchase agreements, the issuer must have outstanding debt rated A or higher
by Moody's or S&P; the issuer's parent corporation, if any, must have
outstanding commercial paper rated Prime-1 by Moody's or A-1 by S&P; or, if no
such ratings are available, the investment must be of comparable quality in the
opinion of the Advisor. In addition to purchasing shares of the Funds, a
Portfolio may use futures contracts and options in order to remain effectively
fully invested in proportions consistent with the Advisor's current asset
allocation strategy for the Portfolio. Specifically, each Portfolio may enter
into futures contracts and options thereon, provided that the aggregate deposits
required on these contracts do not exceed 5% of the Portfolio's total assets. A
Portfolio may also use futures contracts and options for bona fide hedging
transactions. Futures contracts and options may also be used to reallocate the
Portfolio's assets among asset categories while minimizing transaction costs, to
maintain cash reserves while simulating full investment, to facilitate trading,
to seek higher investment returns, or to simulate full investment when a futures
contract is priced attractively or is otherwise considered more advantageous
than the underlying security or index. As a fundamental policy, which may not be
changed without shareholder vote, each Portfolio will concentrate its
investments in shares of the Funds.
 
   
COMMON INVESTMENT PRACTICES
    
 
   
The next several pages contain more detailed information about types of
securities in which the Funds may invest, and strategies which the Advisor or
the respective sub-advisor may employ in pursuit of that Fund's investment
objective and a summary of risks and restrictions associated with these
securities and investment practices. For more information, see the SAI.
    
 
   
BORROWING.  The Funds may borrow money from banks solely for temporary or
emergency purposes, subject to various limitations. If a Fund borrows money, its
share price may be subject to greater fluctuation until the borrowing is paid
off. For the California Money, Short Term High Quality Bond, Target Maturity
2002, California Municipal, California Insured Intermediate Municipal, Florida
Insured Municipal, Growth, International Growth and Emerging Growth Funds, and
for the Portfolios, such borrowings may not exceed 30% of total assets. The
Money Market, Tax-Exempt Money Market, U.S. Government Securities, Income, High
Yield, Tax-Exempt Bond, Bond & Stock, Growth & Income and Northwest Funds may
borrow up to 5% of their total assets for emergency purposes. In addition, the
Money Market and Tax-Exempt Money Market Funds may borrow up to one-third of
their total assets to meet redemption requests. The Short Term High Quality Bond
Fund is prohibited from borrowing money or entering into reverse repurchase
agreements or dollar roll transactions (described below) in the aggregate in
excess of one-third of the Fund's total assets (after giving effect to such
borrowings and transactions). If a Fund makes additional leverage investments
while borrowings are outstanding, this will have the effect of leveraging the
Fund. The California Money, Short Term High Quality Bond, Target Maturity 2002,
California Municipal, California Insured Intermediate Municipal, Florida Insured
Municipal, Growth, International Growth and Emerging Growth Funds and the
Portfolios may not purchase additional securities when borrowings, including
reverse repurchase agreements, for each of these except the Short Term High
Quality Bond Fund, exceed 5% of total assets. Leveraging will magnify declines
as well as increases in the NAV of a Fund's or Portfolio's shares and in the
yield on a Fund's or Portfolio's investments. Each of the foregoing percentage
limitations on borrowings is a fundamental policy of the respective Funds and
Portfolios.
    
 
   
The Income, Short Term High Quality Bond and U.S. Government Securities Funds
may enter into DOLLAR ROLLS. A Fund enters into a DOLLAR ROLL by selling
securities for delivery in the current month and simultaneously contracting to
repurchase, typically in
    
 
                                       43
<PAGE>   46
 
   
30 or 60 days, substantially similar (same type, coupon and maturity) securities
on a specified future date. Under the Investment Company Act of 1940, as amended
(the "1940 Act"), this may be considered borrowing from the counterparty and may
produce similar leveraging effects. The proceeds of the initial sale of
securities in the dollar roll transactions, for example, may be used to purchase
long-term securities which will be held during the roll period. To the extent
that the proceeds of the initial sale of securities are invested in bonds, the
Fund will be subject to market risk on those bonds as well as similar risk with
respect to the securities the Fund is required to repurchase.
    
 
Each of the Short Term High Quality Bond, California Municipal, California
Insured Intermediate Municipal, Florida Insured Municipal, Growth, International
Growth and Emerging Growth Funds may engage in REVERSE REPURCHASE AGREEMENTS.
Reverse repurchase agreements involve the risk that the market value of the
securities sold by a Fund may decline below the repurchase price of the
securities and, if the proceeds from the reverse repurchase agreement are
invested in securities, that the market value of the securities bought may
decline at the same time there is decline in the securities sold (and required
to be repurchased).
 
   
FIXED-INCOME OBLIGATIONS.  The market value of fixed-income securities held by a
Fund and, consequently, the value of the Fund's shares can be expected to vary
inversely to changes in prevailing interest rates. You should recognize that, in
periods of declining interest rates, the Fund's yield will tend to be somewhat
higher than prevailing market rates and, in periods of rising interest rates,
the Fund's yield will tend to be somewhat lower. Also, when interest rates are
falling, any net inflow of money to the Fund will likely be invested in
instruments producing lower yields than the balance of its assets, thereby
reducing current yield. In periods of rising interest rates, the opposite can be
expected to occur. The prices of longer maturity securities are also subject to
greater market fluctuations as a result of changes in interest rates. In
addition, obligations purchased by a Fund may be subject to the risk of default.
Fixed-Income obligations, including Municipal Obligations, rated in the lower
end of the investment-grade category (Baa or BBB) may have speculative
characteristics and may be more sensitive to economic changes and changes in the
financial condition of their issuers.
    
 
   
The fixed-income securities in which the Funds may invest include zero-coupon
securities, which make no payments of interest or principal until maturity.
Because these securities avoid the need to make current interest payments, they
may involve greater credit risks than other fixed-income securities.
    
 
FLOATING RATE, INVERSE FLOATING RATE AND VARIABLE RATE OBLIGATIONS.  The
Municipal Funds, the Fixed-Income Funds and the Growth & Income Fund may
purchase floating rate, inverse floating rate and variable rate obligations,
including participation interests therein.
 
The Money Funds may purchase floating rate and variable rate obligations,
including participation interests therein.
 
   
The Fixed-Income Funds may purchase mortgage-backed securities that are floating
rate, inverse floating rate and variable rate obligations. Municipal Obligations
purchased by the Municipal Funds may include floating rate, inverse floating
rate and variable rate obligations, including variable rate demand notes issued
by industrial development authorities and other governmental entities, as well
as participation interests therein. Although variable rate demand notes are
frequently not rated by credit rating agencies, a Fund may purchase unrated
notes that are determined by the Advisor or the Fund's sub-advisor to be of
comparable quality at the time of purchase to rated instruments that may be
purchased by the Fund. The absence of an active secondary market could make it
difficult for a Fund to dispose of these securities in the event the issuer of
the note were to default on its payment obligations, and the Fund could, for
this or other reasons, suffer a loss as a result of the default.
    
 
Each Fund may also invest in securities representing interests in tax-exempt
securities, known as inverse floating obligations or "residual interest bonds,"
which pay interest rates that vary inversely with changes in the interest rates
of specified short-term tax-exempt securities or an index of short-term
tax-exempt securities. The interest rates on inverse floating-rate obligations
or residual interest bonds will typically decline as short-term market interest
rates increase and increase as short-term market rates decline. These securities
have the effect of providing a degree of investment leverage. They will
generally respond to changes in market interest rates more rapidly than
fixed-rate long-term securities (typically twice as fast). As a result, the
market values of inverse floating-rate
 
                                       44
<PAGE>   47
 
obligations and residual interest bonds will generally be more volatile than the
market values of fixed-rate tax-exempt securities.
 
   
FOREIGN CURRENCY EXCHANGE TRANSACTIONS AND CURRENCY MANAGEMENT.  The Equity
Funds and Fixed-Income Funds (with the exception of the Target Maturity 2002,
U.S. Government Securities, Bond & Stock, Growth & Income and Northwest Funds)
may, subject to the investment limitations stated elsewhere in this Prospectus
and the SAI, engage in foreign currency exchange transactions. Funds that buy
and sell securities denominated in currencies other than the U.S. dollar, and
receive interest, dividends and sale proceeds in currencies other than the U.S.
dollar, may enter into foreign currency exchange transactions to convert to and
from different foreign currencies and to convert foreign currencies to and from
the U.S. dollar. These Funds either enter into these transactions on a spot
(i.e., cash) basis at the spot rate prevailing in the foreign currency exchange
market, or use forward contracts to purchase or sell foreign currencies.
    
 
   
These Funds also may enter into foreign currency hedging transactions in an
attempt to protect against changes in foreign currency exchange rates between
the trade and settlement dates of specific securities transactions or changes in
foreign currency exchange rates that would adversely affect a portfolio position
or an anticipated portfolio position. These transactions tend to limit any
potential gain that might be realized should the value of the hedged currency
increase. The precise matching of the forward contract amounts and the value of
the securities involved will not generally be possible because the future value
of these securities in foreign currencies will change as a consequence of market
movements in the value of those securities between the date the forward contract
is entered into and the date it matures. The projection of currency market
movements is extremely difficult, and the successful execution of a hedging
strategy is highly uncertain. In addition, when the Advisor or a Fund's
sub-advisor believes that the currency of a specific country may deteriorate
against another currency, it may enter into a forward contract to sell the less
attractive currency and buy the more attractive one. The amount in question
could be less than or equal to the value of the Fund's securities denominated in
the less attractive currency. The Fund may also enter into a forward contract to
sell a currency which is linked to a currency or currencies in which some or all
of the Fund's portfolio securities are or could be denominated, and to buy U.S.
dollars. These practices are referred to as "cross hedging" and "proxy hedging."
    
 
Forward currency exchange contracts are agreements to exchange one currency for
another - for example, to exchange a certain amount of U.S. dollars for a
certain amount of Japanese yen - at a future date and specified price. Because
there is a risk of loss to the Fund if the other party does not complete the
transaction, the Advisor or the Fund's sub-advisor will enter into forward
currency exchange contracts only with parties approved by the Trusts' Board of
Trustees or persons acting pursuant to their direction.
 
   
Each of the Funds other than the Money Funds (with the exception of the Target
Maturity 2002, U.S. Government Securities Bond & Stock, Growth & Income and
Northwest Funds) may invest in securities which are indexed to certain specific
foreign currency exchange rates. These securities expose you to the risk of
significant changes in rates of exchange between the U.S. dollar and any foreign
currency to which an exchange rate-related security is linked. In addition,
there is no assurance that sufficient trading interest to create a liquid
secondary market will exist for a particular exchange rate-related security due
to conditions in the debt and foreign currency markets. Illiquidity in the
forward foreign exchange market and the high volatility of the foreign exchange
market may from time to time combine to make it difficult to sell an exchange
rate-related security prior to maturity without incurring a significant loss.
    
 
While the foregoing actions are intended to protect the Fund from adverse
currency movements, there is a risk that currency movements involved will not be
properly anticipated, and there can be no assurance that such transactions will
be available or that the Funds will use such transactions even if they are
available. Use of currency hedging techniques may also be limited by the need to
protect the status of the Fund as a regulated investment company under the
Internal Revenue Code of 1986, as amended (the "Code").
 
FOREIGN INVESTMENTS.  The Money Market, Bond & Stock, Growth & Income and
Northwest Funds may invest in securities of foreign issuers if such securities
are denominated in U.S. dollars. The High Yield, Income, Short Term High Quality
Bond, Emerging Growth, Growth and International Growth Funds may invest in both
U.S. dollar denominated and non-
 
                                       45
<PAGE>   48
U.S. dollar denominated foreign securities. There are certain risks involved in
investing in foreign securities, including those resulting from
 
   
- - fluctuations in currency exchange rates,
    
   
- - devaluation of currencies,
    
   
- - future political or economic developments and the possible imposition of
  currency exchange blockages or other foreign governmental laws or
  restrictions,
    
   
- - reduced availability of public information concerning issuers, and
    
   
- - the fact that foreign companies are not generally subject to uniform
  accounting, auditing and financial reporting standards or to other regulatory
  practices and requirements comparable to those applicable to domestic
  companies.
    
 
Moreover, securities of many foreign companies may be less liquid and their
prices more volatile than those of securities of comparable domestic companies.
In addition, there is the possibility of expropriation, nationalization,
confiscatory taxation and limitations on the use or removal of funds or other
assets of the Funds, including the withholding of dividends. The risks
associated with foreign securities are generally greater for securities of
issuers in emerging markets.
 
   
In addition, while the volume of transactions effected on foreign stock
exchanges has increased in recent years, in most cases it remains well below
that of the New York Stock Exchange (the "NYSE"). Accordingly, the Funds'
foreign investments may be less liquid and their prices may be more volatile
than comparable investments in securities of U.S. companies. Moreover, the
settlement periods for foreign securities, which are often longer than those for
securities of U.S. issuers, may affect portfolio liquidity. In buying and
selling securities on foreign exchanges, the Funds normally pay fixed
commissions that are generally higher than the negotiated commissions charged in
the United States. In addition, there is generally less governmental supervision
and regulation of securities exchanges, brokers and issuers in foreign countries
than in the United States. Foreign securities generally are denominated and pay
dividends or interest in foreign currencies, and the value of the Funds' net
assets as measured in U.S. dollars will be affected favorably or unfavorably by
changes in exchange rates.
    
 
   
The Equity Funds, the Short Term High Quality Bond Fund, the Income Fund and the
High Yield Fund may invest in securities of foreign issuers directly or in the
form of American Depositary Receipts ("ADRs"), European Depositary Receipts
("EDRs"), Global Depositary Receipts ("GDRs") or other similar securities
representing securities of foreign issuers. These securities may not be
denominated in the same currency as the securities they represent. ADRs are
receipts typically issued by a United States bank or trust company evidencing
ownership of the underlying foreign securities. EDRs, which are sometimes
referred to as Continental Depositary Receipts ("CDRs"), are receipts issued by
a European financial institution evidencing a similar arrangement. Generally,
ADRs, in registered form, are designed for use in the United States securities
markets, and EDRs, in bearer form, are designed for use in European securities
markets.
    
 
   
GEOGRAPHIC CONCENTRATION.  Potential investors in the Northwest Fund, the
Municipal Funds (other than the Tax-Exempt Bond Fund) and the California Money
Fund should consider the possibly greater risk arising from the geographic
concentration of their investments, as well as the current and past financial
condition of California and Florida municipal issuers in the case of the
Municipal Funds. In addition to factors affecting the state or regional economy,
certain California and Florida constitutional amendments, legislative measures,
executive orders, administrative regulations, court decisions and voter
initiatives could result in certain adverse consequences affecting California
and Florida municipal obligations, respectively. See the SAI for a more detailed
description of these risks.
    
 
GOVERNMENT STRIPPED MORTGAGE-BACKED SECURITIES. The Income, Short Term High
Quality Bond, Target Maturity 2002, U.S. Government Securities and High Yield
Funds may invest in government stripped mortgage-backed securities issued or
guaranteed by GNMA, FNMA or FHLMC. These securities represent beneficial
ownership interests in either periodic principal distributions (principal-only
or "PO strips") or interest distributions (interest-only or "IO strips") on
mortgage-backed certificates issued by GNMA, FNMA or FHLMC, as the case may be.
The mortgages backing GNMA certificates include conventional 30-year fixed-rate
mortgages, 15-year fixed-rate mortgages, graduated payment mortgages, and
adjustable-rate mortgages. The U.S. Government guarantees the timely payment of
interest and principal for these securities. However, the guarantees do not
extend to

                                       46
<PAGE>   49
   
the securities' yield or value, which are likely to vary inversely with
fluctuations in interest rates. Also the guarantees do not extend to the yield
or value of the Fund's shares. Investing in government stripped mortgage-backed
securities involves the risks normally associated with investing in
mortgage-backed securities issued by government or government-related entities.
See "Mortgage-Backed Securities" below. In addition, the yields on PO and IO
strips are extremely sensitive to prepayments on the underlying PO and IO
strips, mortgage loans. If a decline in the level of prevailing interest rates
results in a higher than anticipated rate of principal prepayment, distributions
of principal will be accelerated, thereby reducing the yield to maturity on IO
strips and increasing the yield to maturity on PO strips. Conversely, if an
increase in the level of prevailing interest rates results in a rate of
principal prepayments lower than anticipated, distributions of principal will be
deferred, thereby increasing the yield to maturity on IO strips and decreasing
the yield to maturity on PO strips. Sufficiently high prepayment rates could
result in the Fund losing some or all of its initial investment in an IO strip.
The Funds will acquire government stripped mortgage-backed securities only if a
liquid secondary market for the securities exists at the time of acquisition.
However, there can be no assurance that the Funds will be able to effect a trade
of a government stripped mortgage-backed security at a time when it wishes to do
so.
    
 
   
HOLDINGS IN OTHER INVESTMENT COMPANIES.  When the Advisor or a Fund's
sub-advisor believes that it would be beneficial to the Fund, each of the Tax-
Exempt Money Market, California Money, California Insured Intermediate
Municipal, California Municipal, Florida Insured Municipal, Short Term High
Quality Bond, Tax-Exempt Bond, Emerging Growth, Growth and International Growth
Funds may invest up to 10% of its assets in securities of mutual funds that are
not affiliated with the Advisor or the Fund's sub-advisor. As a shareholder in
any such mutual fund, the Fund will bear its ratable share of the mutual fund's
expenses, including management fees, and will remain subject to the Fund's
advisory and administration fees with respect to the assets so invested. In
addition, the Growth Fund may invest Fund assets in money market funds affilia-
ted with Janus (its sub-advisor), provided that Janus remits to the Fund the
amount of any investment advisory and administrative services fees paid to Janus
as the investment manager of the money market fund.
    
 
   
ILLIQUID SECURITIES.  Up to 10% of the net assets of each Money Fund and up to
15% of the net assets of every other Fund may be invested in securities that are
not readily marketable. Such illiquid securities may include:
    
 
   
- - repurchase agreements with maturities greater than seven calendar days;
    
   
- - time deposits maturing in more than seven calendar days;
    
   
- - to the extent a liquid secondary market does not exist for the instruments,
  futures contracts and options thereon;
    
 
   
- - certain over-the-counter options, as described in the SAI;
    
   
- - certain variable rate demand notes having a demand period of more than seven
  days; and
    
   
- - securities the disposition of which is restricted under federal securities
  laws (excluding certain Rule 144A securities, as described below).
    

   
Securities which may be resold pursuant to Rule 144A under the Securities Act of
1933, as amended, will not be included for the purposes of these restrictions,
so long as such securities meet liquidity guidelines established by the Trusts'
Board of Trustees.
    
 
LENDING OF SECURITIES.  The California Money, California Insured Intermediate
Municipal, Short Term High Quality Bond, Emerging Growth, Growth and
International Growth Funds each may lend portfolio securities up to 20% of total
assets to brokers and other financial organizations. The Bond & Stock, Growth &
Income and Northwest Funds may lend portfolio securities up to 33% of total
assets. These transactions involve a risk of loss to the Fund if the
counterparty should fail to return such securities to the Fund upon demand.
 
   
LOWER-RATED SECURITIES.  The Income, Tax-Exempt Bond, Bond & Stock, Emerging
Growth, Growth & Income and Growth Funds may each invest up to 35% of their
total assets in non-investment grade debt securities, sometimes referred to as
"junk bonds." The High Yield Fund may invest all of its assets in these
securities, and will generally invest at least 65% of its assets in them.
    
 
                                       47
<PAGE>   50
   
Non-investment-grade debt securities usually entail greater risk (including the
possibility of default or bankruptcy of the issuers), generally involve greater
price volatility and risk of principal and income, and may be less liquid than
higher-rated securities. Both price volatility and illiquidity may make it
difficult for a Fund to value or to sell certain of these securities under
certain market conditions. These securities are often considered to be
speculative and involve greater risk of default or price changes due to changes
in the issuer's creditworthiness. The market prices of these securities may
fluctuate more than higher-rated securities and may decline significantly in
periods of general economic difficulty, which may follow periods of rising
interest rates. For further information, see Appendix A to this Prospectus.
    
 
The following table shows, for each indicated Fund, the average percentage of
its total assets that was invested during the past fiscal year in securities
assigned to the various rating categories by S&P, or if unrated by S&P, assigned
to comparable rating categories by another NRSRO, and in unrated securities
determined by the Advisor to be of comparable quality:
   
<TABLE>
<CAPTION>
                               Income    Tax-Exempt    Bond & Stock
S&P RATING                      Fund     Bond Fund         Fund
- -------------------------------------------------------------------
<S>                            <C>       <C>           <C>
AAA (or US Treasury).........
AA...........................
A............................
BBB..........................
BB...........................
B............................
Not Rated....................
</TABLE>
    
   
MORTGAGE-BACKED AND ASSET-BACKED SECURITIES.  The California Insured
Intermediate Municipal, California Municipal, Florida Insured Municipal, Short
Term High Quality Bond, U.S. Government Securities, Emerging Growth and
International Growth Funds may invest in mortgage-backed U.S. Government
securities, which represent interests in a pool of mortgage loans. See
"Government Stripped Mortgage-Backed Securities" above. In addition, the Income,
Bond & Stock and Growth & Income Funds may invest in commercial mortgage-backed
securities, which are similar to those securities, except that they are not
issued or guaranteed by governmental entities. Commercial mortgage-backed
securities include collateralized mortgage obligations and real estate mortgage
investment conduits ("REMICs"). While commercial mortgage-backed securities are
generally structured with one or more types of credit enhancement, they
typically lack a guarantee by an entity having the credit status of a
governmental agency or instrumentality.
    
 
   
To the extent that a Fund purchases mortgage-backed securities at a premium,
mortgage foreclosures and payments and prepayments of principal (which may be
made at any time without penalty) will tend to result in the loss of that
premium. The yield of a Fund may be affected by reinvestment of prepayments at
higher or lower rates than the original investment. In addition, like other debt
securities, the value of mortgage-related securities, including government and
government-related mortgage pools, will generally fluctuate in response to
market interest rates.
    
 
The Money Market, Tax-Exempt Money Market, Short Term High Quality Bond, Bond &
Stock, Emerging Growth and High Yield Funds may purchase asset-backed
securities. These Funds will not invest more than 10% of their total assets in
asset-backed securities, except that the Short Term High Quality Bond Fund may
invest up to 25% of its total assets in such securities. Asset-backed securities
are structured like mortgage-backed securities, but instead of mortgage loans or
interests in mortgage loans, the underlying assets may include such items as
motor vehicle installment sales or installment loan contracts, leases of various
types of real and personal property, including home equity loans, and
receivables from credit card agreements. The ability of an issuer of
asset-backed securities to enforce its security interest in the underlying
assets may be limited.
 
   
MUNICIPAL OBLIGATIONS, LEASES AND AMT-SUBJECT BONDS.  The two principal
classifications of municipal bonds are "general obligation" and "revenue" bonds.
General obligation bonds are secured by the issuer's pledge of its full faith
and credit, with either limited or unlimited taxing power for the payment of
principal and interest. Revenue bonds are not supported by the issuer's full
taxing authority. Generally, they are payable only from the revenues of a
particular facility, a class of facilities, or the proceeds of another specific
revenue source.
    
 
   
The Tax-Exempt Money Market, California Money and California Insured
Intermediate Municipal Funds may acquire participations in lease obligations or
installment purchase contract obligations (collectively, "lease obligations") of
municipal authorities or entities. Lease obligations do not constitute general
obligations of the
    

                                       48
<PAGE>   51
 
   
municipality for which the municipality's taxing power is pledged. Certain of
these lease obligations contain "non-appropriation" clauses, which provide that
the municipality has no obligation to make lease or installment purchase
payments in future years unless money is appropriated for such purpose on a
yearly basis. In addition to the "non-appropriation" risk, these securities
represent a relatively new type of financing that has not yet developed the
depth of marketability associated with more conventional bonds. In the case of a
"non-appropriation" lease, the Fund's ability to recover under the lease in the
event of non-appropriation or default will be limited solely to the repossession
of the leased property, and in any event, foreclosure of that property might
prove difficult.
    
 
"AMT-Subject Bonds" are Municipal Obligations issued to finance certain "private
activities," such as bonds used to finance airports, housing projects, student
loan programs and water and sewer projects. Interest on AMT-Subject Bonds is a
specific tax preference item for purposes of the federal individual and
corporate alternative minimum taxes. See "Dividends, Capital Gains and Taxes"
for a discussion of the tax consequences of investing in AMT-Subject Bonds.
 
   
Current federal income tax laws limit the types and volume of bonds qualifying
for the federal income tax exemption of interest, which may have an effect upon
the ability of the Fund to purchase sufficient amounts of tax-exempt securities.
    
 
REAL ESTATE INVESTMENT TRUSTS.  The Income, Bond & Stock, Growth & Income and
Northwest Funds may invest in real estate investment trusts, known as "REITs."
REITs involve certain unique risks in addition to those risks associated with
investing in the real estate industry in general (such as possible declines in
the value of real estate, lack of availability of mortgage funds or extended
vacancies of property). Equity REITs may be affected by changes in the value of
the underlying property owned by the REITs, while mortgage REITs may be affected
by the quality of any credit extended. REITs are dependent upon management
skills, are not diversified, are subject to heavy cash flow dependency, risks of
default by borrowers, and self-liquidation. REITs are also subject to the
possibilities of failing to qualify for tax-free pass-through of income under
the Code, and failing to maintain their exemptions from registration under the
1940 Act.
 
Investment in REITs involves risks similar to those associated with investing in
small capitalization companies. REITs may have limited financial resources, may
trade less frequently and in a limited volume and may be subject to more abrupt
or erratic price movements than larger company securities.
 
REPURCHASE AGREEMENTS.  All of the Funds may invest in repurchase agreements,
which are purchases of underlying debt obligations from financial institutions,
such as banks and broker-dealers, subject to the seller's agreement to
repurchase the obligations at an established time and price. Repurchase
agreements can be regarded as loans to the seller, collateralized by the
securities that are the subject of the agreement. Default by the seller would
expose the Fund to possible loss because of adverse market action or delay in
connection with the disposition of the underlying obligations. In addition, if
bankruptcy proceedings are commenced with respect to the seller of the
obligations, the Fund may be delayed or limited in its ability to sell the
collateral. The Tax-Exempt Money Market and California Money Funds' investments
in repurchase agreements are limited by their restrictions on investment in
taxable instruments. Pursuant to an exemptive order granted by the SEC, the
Funds may transfer daily uninvested cash balances into one or more joint trading
accounts. Assets in the joint trading accounts are invested in money market
instruments, and the proceeds are allocated to the participating funds on a pro
rata basis.
 
   
RESTRICTED SECURITIES.  Each of the Funds may purchase restricted securities
(provided such securities are in the case of the Money Market, Tax-Exempt Money
Market, Income, U.S. Government Securities, Tax-Exempt Bond, Bond & Stock,
Growth & Income and Northwest Funds eligible for resale pursuant to Rule 144A
under the Securities Act of 1933, as amended). Although recent and ongoing
developments in the securities markets have resulted in greater trading of
restricted securities, making restricted securities, in many instances, more
liquid than they once were considered to be, investing in restricted securities
could increase the level of illiquidity of the portfolio securities of a Fund.
This could make it more difficult for a Fund to fulfill shareholder redemption
orders on a timely basis. If a Fund were required to sell these securities on
short notice, it might be unable to obtain fair market value.
    
 
                                       49
<PAGE>   52
 
   
STAND-BY COMMITMENTS.  The California Money, Tax-Exempt Money Market and the
Municipal Funds may acquire "stand-by commitments" with respect to Municipal
Obligations held in their portfolios. Under a stand-by commitment, a dealer
agrees to purchase, at a Fund's option, specified Municipal Obligations at a
specified price. A Fund may pay for stand-by commitments either separately in
cash or by paying a higher price for the securities acquired with the
commitment, thus increasing the cost of the securities and reducing the yield
otherwise available from them. The Funds will acquire stand-by commitments
solely to facilitate portfolio liquidity and do not intend to exercise their
rights thereunder for trading purposes.
    
 
   
STRATEGIC TRANSACTIONS.  Subject to the investment limitations and restrictions
stated elsewhere in this Prospectus and the SAI, each of the Funds and
Portfolios except the Money Funds may utilize various investment strategies as
described below to hedge various market risks, to manage the effective maturity
or duration of fixed-income securities or for other bona fide hedging purposes.
Utilizing these investment strategies, the Fund or Portfolio may purchase and
sell, exchange-listed and over-the-counter put and call options on securities,
equity and fixed-income indices and other financial instruments. It may also
purchase and sell financial futures contracts and options thereon, enter into
various interest rate transactions such as swaps, caps, floors or collars, and
enter into various currency transactions such as currency forward contracts,
currency futures contracts, currency swaps or options on currencies or currency
futures. The Funds may write (sell) covered call options as well. A call option
is "covered" if the Fund owns the security underlying the option it has written
or it maintains enough cash, cash equivalents or liquid securities to purchase
the underlying security. All the above are collectively referred to as
"Strategic Transactions."
    
 
Strategic Transactions may be used
 
   
- - to attempt to protect against possible changes in the market value of
  securities held in, or to be purchased for, the Fund's portfolio resulting
  from securities markets or currency exchange rate fluctuations,
    
 
   
- - to protect the Fund's unrealized gains in the value of its portfolio
  securities,
    
 
   
- - to facilitate the sale of such securities for investment purposes,
    
 
   
- - to manage the effective maturity or duration of the Fund's portfolio, or
    
 
   
- - to establish a position in the derivatives markets as a temporary substitute
  for purchasing or selling particular securities.
    
 
Some Strategic Transactions may also be used to seek potentially higher returns.
Any or all of these investment techniques may be used at any time, as the use of
any Strategic Transaction is a function of numerous variables including market
conditions.
 
The use of Strategic Transactions involves special considerations and risks; for
example,
 
   
- - the ability of the Fund to utilize Strategic Transactions successfully will
  depend on the ability of the Advisor or the sub-advisor to predict pertinent
  market movements,
    
 
   
- - the risk that the other party to a Strategic Transaction will fail to meet its
  obligations to the Fund,
    
 
   
- - the risk that the Fund will be unable to close out a Strategic Transaction at
  a time when it would otherwise do so, due to the illiquidity of the Strategic
  Transaction and
    
 
   
- - the risk of imperfect correlation, or even no correlation, between price
  movements of Strategic Transactions and price movements of the related
  portfolio positions.
    
 
   
Strategic Transactions can reduce opportunity for gain by offsetting the
positive effect of favorable price movements in the related portfolio positions.
    
 
U.S. GOVERNMENT SECURITIES.  All of the Funds may invest in U.S. Government
Securities, which include direct obligations of the U.S. Treasury (such as U.S.
Treasury bills, notes and bonds) and obligations issued or guaranteed by U.S.
Government agencies or instrumentalities. Some obligations issued or guaranteed
by agencies or instrumentalities of the U.S. Government are backed by the full
faith and credit of the U.S. Government (such as GNMA bonds), others are backed
only by the right of the issuer to borrow from the U.S. Treasury (such as
securities of Federal Home Loan Banks) and still others are backed only by the
credit of the instrumentality (such as FNMA and FHLMC bonds).
 
                                       50
<PAGE>   53
 
WHEN-ISSUED SECURITIES, FORWARD COMMITMENTS AND DELAYED-DELIVERY
TRANSACTIONS.  In order to secure yields or prices deemed advantageous at the
time, the Funds (with the exception of the Money Funds and the Target Maturity
2002 Fund) may purchase or sell securities on a when-issued or a
delayed-delivery basis. The Funds will enter into a when-issued transactions
only for the purpose of acquiring portfolio securities. Due to fluctuations in
the value of securities purchased on a when-issued or a delayed-delivery basis,
the yields obtained on such securities may be higher or lower than the yields
available in the market on the dates when the securities are actually delivered
to the Fund. Similarly, the sale of securities for delayed-delivery can involve
the risk that the prices available in the market when delivery is made may
actually be higher than those obtained in the transaction itself. The California
Money Fund and the Municipal Funds may purchase Municipal Obligations offered on
a "forward commitment" basis.
 
When-issued Municipal Obligations may include bonds purchased on a "when, as and
if issued" basis, under which the issuance of the securities depends on the
occurrence of a subsequent event, such as approval of a proposed financing by
appropriate municipal authorities. No when-issued or forward commitments will be
made by the California Money Fund or any Municipal Fund if, as a result, more
than 20% of the value of the Fund's total assets would be committed to such
transactions. A significant commitment of a Fund's assets to the purchase of
securities on a "when, as and if issued" basis may increase the volatility of
the Fund's NAV.
 
YEAR 2000.  Many computer software systems in use today cannot properly process
date-related information from and after January 1, 2000. Should any of the
computer systems employed by the Fund's or Portfolio's major service providers
fail to process this type of information properly, that could have a negative
impact on the Fund's or Portfolio's operations and the services that are
provided to the Fund's or Portfolio's shareholders. The Advisor and Shareholder
Services have advised the Funds and Portfolios that they are reviewing all of
their computer systems with the goal of modifying or replacing such systems
prior to January 1, 2000 to the extent necessary to avoid any such negative
impact. In addition, the Advisor has been advised by the Custodian that it is
also in the process of reviewing its systems with the same goal. As of the date
of this prospectus, the Funds and Portfolios and the Advisor have no reason to
believe that these goals will not be achieved. Similarly, the values of certain
of the Funds' or Portfolio's assets may be adversely affected by the inability
of their issues or third parties to properly process date-related information
from and after January 1, 2000.
 
   
PORTFOLIO TRANSACTIONS AND TURNOVER.  Each Fund's turnover rate varies from year
to year, depending on market conditions and investment strategies. High turnover
rates increase transaction costs and may increase taxable capital gains.
Historical portfolio turnover rates for each Fund are shown under "Financial
Highlights" below. The Advisor and the sub-advisors will not consider portfolio
turnover rate to be a limiting factor in making investment decisions consistent
with the Funds' investment objectives and policies.
    
   
    
 
                                       51
<PAGE>   54
                          WAYS TO SET UP YOUR ACCOUNT
 
+ Individual or Joint Account
  Individual accounts are owned by one person. Two types of joint accounts
  (having two or more owners) can be opened:
 
  1) in a "joint tenancy" account, the surviving owner(s) automatically
  receive(s) the shares of any owner(s) who die(s); and
 
  2) in a "tenants in common" account, the heir(s) of any deceased owner
  receive(s) such owner's shares, rather than the surviving owners of the joint
  account.
 
+ Retirement
  Retirement plans protect investment income and capital gains from current
  taxes. Contributions to these accounts may be tax deductible. Retirement
  accounts require special applications and typically have lower minimums.
 
   
   - INDIVIDUAL RETIREMENT ACCOUNTS ("IRAS") If you are of legal age and under
     70 1/2 years old with Adjusted Gross Income ("AGI") of less than $40,000
     (or $60,000 if married and filing jointly) you may protect up to $2,000
     (subject to certain limitations for single persons with AGI equal to or
     greater than $30,000 and married persons who file jointly with AGI equal to
     or greater than $50,000) per tax year from certain tax effects. If your
     spouse does not work, you can protect up to an additional $2,000 per year
     in your spouse's name.
    
 
   
   - ROTH IRAS If you are of legal age with AGI not exceeding $110,000 (or
     $160,000 if married and filing jointly) you may protect up to $2,000 on a
     non-deductible basis (subject to certain limitations for single persons
     with AGI equal to or greater than $95,000 and married persons who file
     jointly with AGI equal to or greater than $150,000) per tax year from
     certain tax effects.
    
 
   
   - ROLLOVER IRAS You may transfer money from certain employer-sponsored
     retirement plans and keep your tax benefits (often happens when you change
     employers).
    
 
   
   - SIMPLIFIED EMPLOYEE PENSION PLANS ("SEP-IRAS") If you own a small business
     or are self-employed, you and your eligible employees could get many of the
     same advantages as a Keogh, but with fewer administrative requirements.
    
 
+ Gifts or Transfers to a Minor Child
  ("UGMA" or "UTMA")
   
  You can give money to a child and obtain certain tax benefits. A parent or
  grandparent can give up to $10,000 a year to each child or grandchild without
  paying federal gift tax. Depending on state laws, you can set up a custodial
  account under the Uniform Gifts to Minors Act (UGMA) or the Uniform Transfers
  to Minors Act (UTMA).
    
 
+ Trust
   
  You can use a Trust for many purposes, including charitable contributions and
  providing a regular income for a child until a certain age. The trust must be
  established before an account can be opened.
    
 
+ Corporation or Other Organization
  Corporations, associations, partnerships, institutions, or other groups may
  invest for many purposes.
 
                                       52
<PAGE>   55
 
   
                         HOW CAN I INVEST IN THE FUNDS
    
   
                                AND PORTFOLIOS?
    
 
<TABLE>
<CAPTION>
                                               TO OPEN AN ACCOUNT:                    TO ADD TO AN ACCOUNT:
                                                (MINIMUM $1,000*)                        (MINIMUM $50**)
- ------------------------------------------------------------------------------------------------------------------
<S>                                     <C>                                     <C>
+ By Phone -- 800-222-5852              Exchange from another Fund or           Exchange from another Fund or
                                        Portfolio account with the same         Portfolio account with the same
                                        registration, including name,           registration, including name,
                                        address, and taxpayer ID number         address, and taxpayer ID number.
                                        (social security number for an
                                        individual).                            Call WM Shareholder Services at
                                                                                800-222-5852
                                        Call WM Shareholder Services at
                                        800-222-5852. (5:00 a.m. to 6:00
                                        p.m., Pacific Time/8:00 a.m. to
                                        9:00 p.m., Eastern Time, Monday
                                        through Friday and 6:00 a.m. to
                                        3:00 p.m., Pacific Time/9:00 a.m.
                                        to 6:00 p.m., Eastern Time, on
                                        Saturdays)
- ------------------------------------------------------------------------------------------------------------------
+ By Mail                               Complete and sign the application.      Make your check payable to The WM
                                        Make your check or negotiable bank      Group of Funds. Indicate your
                                        draft payable to The WM Group of        account number on your check.
                                        Funds. Third-party checks are not       Include the "next investment" stub
                                        accepted.                               from your previous account
                                                                                statement. Mail the check and stub
                                        Mail the completed application          to the address printed on your
                                        form and check to:                      account statement.

                                        THE WM GROUP OF FUNDS                   Exchange by mail: call
                                        P.O. BOX 9757                           800-222-5852 for instructions
                                        PROVIDENCE, RI 02940-9757
- ------------------------------------------------------------------------------------------------------------------
+ By Wire                               1) Telephone WM Shareholder Ser-        Instruct your bank/financial
                                        vices for an application form and       institution to wire Federal Funds
                                        instructions.                           as described at left under
                                        2) Instruct your bank to wire           paragraph 2.
                                        Federal Funds exactly as follows:
                                        BOSTON SAFE DEPOSIT AND TRUST
                                        BOSTON, MA
                                        ABA# 011-001234
                                        FOR CREDIT TO:
                                        THE WM GROUP OF FUNDS
                                        ACCOUNT #167053
                                        (FUND NAME AND CLASS OF SHARES)
                                        (CUSTOMER'S NAME)
                                        (CUSTOMER'S SOCIAL SECURITY
                                        NUMBER)
                                        3) Mail the completed application
                                        form to:
                                        THE WM GROUP OF FUNDS
                                        P.O. BOX 9757
                                        PROVIDENCE, RI 02940-9757
</TABLE>
 
                                       53
<PAGE>   56
                         HOW CAN I INVEST IN THE FUNDS
                            AND PORTFOLIOS? (CONT.)
 
<TABLE>
<CAPTION>
                                               TO OPEN AN ACCOUNT:                    TO ADD TO AN ACCOUNT:
                                                (MINIMUM $1,000*)                        (MINIMUM $50**)
- ------------------------------------------------------------------------------------------------------------------
<S>                                     <C>                                     <C>
+ Systematic                            1) Obtain and complete an               Pre-authorized periodic
                                        application form.                       investments will be processed
  (Minimum New Account amount                                                   automatically. (Minimum Amount
  $50+)                                 2) Attach a voided check or             $25++)
                                        deposit slip from the bank account
                                        you would like the investments
                                        transferred from and indicate
                                        either the day of the week or
                                        day(s) of the month when the
                                        purchase would occur.

                                        3) Mail the application to the
                                        address listed above.
- ------------------------------------------------------------------------------------------------------------------
</TABLE>
 
 * $10,000 for the Portfolios and $2,000 for IRA accounts investing in the
   Portfolios.
** $100 for the Portfolios.
 + $1,000 for the Portfolios.
++ $100 for the Portfolios.
 
                                       54
<PAGE>   57
 
   
                     WHICH CLASS OF SHARES IS BEST FOR ME?
    
 
   
This prospectus offers you a choice of two classes of fund shares: Class A and
Class B. The next several pages will expand upon the "Fees and Expenses" section
above to help you determine which class of shares is best for you. This will
depend upon a number of factors, including the amount you plan to invest and how
long you plan to hold your shares.
    
 
   
CLASS A SHARES
    
 
The offering price for Class A shares of the Non-Money Funds is the NAV next
calculated after receipt of a properly completed purchase order, plus an initial
sales charge as shown in the table below. Sales charges may be reduced or waived
as discussed following the table. The final column in each table indicates what
dealers receive for selling Class A shares.
<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------
                                                      + FIXED-INCOME FUNDS
                                                      (other than Short Term High Quality Bond
                                                      and Target Maturity 2002 Funds)
                                                      + MUNICIPAL FUNDS
                                                      + Income and Flexible Income
                                                      Portfolios
         ----------------------------------------------------------------------------------------
                                                                                       REALLOWED
                                                              SALES CHARGE            TO DEALERS
         ----------------------------------------------------------------------------------------
                                                      Percentage     Percentage of    Percentage
                                                      of Offering     Net Amount      of Offering
               Purchase of Class A Shares                Price         Invested          Price
         ----------------------------------------------------------------------------------------
<S>      <C>                                          <C>            <C>              <C>
         Less than $50,000                               4.50%            4.71%          4.00%
         ----------------------------------------------------------------------------------------
         $50,000 to $100,000                             4.00             4.17           3.50
         ----------------------------------------------------------------------------------------
         $100,000 to $250,000                            3.50             3.63           3.00
         ----------------------------------------------------------------------------------------
         $250,000 to $500,000                            2.50             2.56           2.00
         ----------------------------------------------------------------------------------------
         $500,000 to $1,000,000                          2.00             2.04           1.75
         ----------------------------------------------------------------------------------------
         $1,000,000 and above*                            .00              .00            .00
         ----------------------------------------------------------------------------------------
- -------------------------------------------------------------------------------------------------
 
<CAPTION>
- ---  -----------------------------------------------------
     + Equity Funds
 
     Strategic Growth,
     Conservative Growth and
     Balanced Portfolios
     -------------------------------------------------
                                      REALLOWED
             SALES CHARGE            TO DEALERS
     -------------------------------------------------
     Percentage     Percentage of    Percentage
     of Offering     Net Amount      of Offering
        Price         Invested          Price
     -------------------------------------------------
<S>  <C>            <C>              <C>           <C> <C>
        5.50%           5.82%           4.75%
        -----------------------------------------------------------------------------------------
        4.75            4.99            4.00
        -----------------------------------------------------------------------------------------
        3.75            3.90            3.00
        -----------------------------------------------------------------------------------------
        3.00            3.09            2.50
        -----------------------------------------------------------------------------------------
        2.00            2.04            1.75
        -----------------------------------------------------------------------------------------
         .00             .00             .00
        -----------------------------------------------------------------------------------------
- -------------------------------------------------------------------------------------------------
</TABLE>
<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------
                                                      + SHORT TERM HIGH QUALITY
                                                      Bond Fund
         ----------------------------------------------------------------------------------------
                                                                                       REALLOWED
                                                              SALES CHARGE            TO DEALERS
         ----------------------------------------------------------------------------------------
                                                      Percentage     Percentage of    Percentage
                                                      of Offering     Net Amount      of Offering
               Purchase of Class A Shares                Price         Invested          Price
         ----------------------------------------------------------------------------------------
<S>      <C>                                          <C>            <C>              <C>
         Less than $50,000                               3.50%            3.63%          3.00%
         ----------------------------------------------------------------------------------------
         $50,000 to $100,000                             3.00             3.09           2.50
         ----------------------------------------------------------------------------------------
         $100,000 to $250,000                            2.50             2.56           2.00
         ----------------------------------------------------------------------------------------
         $250,000 to $500,000                            2.25             2.30           2.00
         ----------------------------------------------------------------------------------------
         $500,000 to $1,000,000                          2.00             2.04           1.75
         ----------------------------------------------------------------------------------------
         $1,000,000 and above*                            .00              .00            .00
         ----------------------------------------------------------------------------------------
- -------------------------------------------------------------------------------------------------
 
<CAPTION>
- ---  -----------------------------------------------------
     + Target Maturity
     2002 Fund
     -----------------------------------------------------
                                      REALLOWED
             SALES CHARGE            TO DEALERS
     -------------------------------------------------
     Percentage     Percentage of    Percentage
     of Offering     Net Amount      of Offering
        Price         Invested          Price
     -------------------------------------------------
<S>  <C>            <C>              <C>           <C> <C>
        2.00%           2.04%           1.75%
        -----------------------------------------------------------------------------------------
        1.50            1.52            1.25
        -----------------------------------------------------------------------------------------
        1.00            1.01            0.75
        -----------------------------------------------------------------------------------------
        1.00            1.01            0.75
        -----------------------------------------------------------------------------------------
        0.50            0.50            0.50
        -----------------------------------------------------------------------------------------
         .00             .00             .00
        -----------------------------------------------------------------------------------------
- -------------------------------------------------------------------------------------------------
</TABLE>
 
* See "net asset value purchases" below.
 
Example: An investor considers putting $1,000 into an Equity Fund's Class A
shares. Based on the first column in the above table, 5.50% of the $1,000 would
pay for a sales charge. The charge would be $55.00, which is 5.82% of the net
investment of $945.00, as the next column shows. The dealer selling the shares
would be paid $47.50 of the $55.00, which is 4.75% of $1,000, as the last column
shows.
 
                                       55
<PAGE>   58
 
   
CUMULATIVE DISCOUNT.  This allows your current purchases to qualify for the
foregoing discounts by including the value of shares of the Funds and Portfolios
that were purchased subject to an initial or contingent deferred sales charge.
The discount will be based on current market value. Individuals, immediate
family members and trustees purchasing for single fiduciary accounts are
eligible for this discount.
    
 
   
LETTER OF INTENT.  This discount is for purchases made over an extended period.
It provides you with a cumulative discount on the same basis as explained in the
previous paragraph if the following conditions are met: Purchases of Class A
shares must be made within a 13-month period that begins no earlier than 90 days
before the submission of a letter of intent from the investor to the Funds. For
more information about this discount, please contact Shareholder Services or
your Investment Representative.
    
 
   
REINVESTMENT.  You can reinvest redemption proceeds of Class A shares that were
subject to a sales charge when first purchased in other Class A shares within
120 days without incurring another initial sales charge. You can also reinvest
any redemption proceeds of Class B shares that were subject to a contingent
deferred sales charge Class A shares within 120 days without incurring an
initial sales charge.
    
 
   
NET ASSET VALUE PURCHASES.  There is no initial sales charge on Class A
purchases of $1 million or more, but such purchases are generally subject to a
contingent deferred sales charge of 1.00% if you redeem them during the first
year after purchase or .50% if you redeem them during the second year after
purchase.
    
 
   
Qualified employee benefit plans (including SEPs and SIMPLEs) that have more
than 100 participants or that have more than $500,000 invested in the Funds and
Portfolios may purchase shares without an initial sales charge. However, a
contingent deferred sales charge of 1% may be imposed on the amount that was
invested through such a plan in Class A shares and that is redeemed (1) if,
within the first two years after the plan's initial investment in the Funds or
Portfolios, the named fiduciary of the plan withdraws the plan from investing in
the Funds and Portfolios in a manner that causes all shares held by the plan's
participants to be redeemed; or (2) by a plan participant within two years of
the plan participant's purchase of such Class A shares. The contingent deferred
sales charge will be waived on redemptions in connection with certain
involuntary distributions, including distributions arising out of the death or
post purchase disability of a shareholder (including one who owns the shares as
joint tenant).
    
 
Class A shares may be purchased at net asset value, and in any amount, by
officers, directors and employees of the Advisor or its affiliates, or companies
which have entered into selling agreements with the Distributor, and to certain
family members of such individuals. The purchase must be for investment purposes
only and may not be resold other than through redemption by the Fund or
Portfolio. The Funds and Portfolios may also offer their shares at net asset
value to certain retirement plans; to investors who purchase shares with the
proceeds of redemptions of shares of other mutual funds advised by WM Advisors
or its affiliates within five business days of such redemptions; and to brokers,
dealers or registered investment advisors who have entered into arrangements
with the Distributor providing specifically for the shares to be used in
particular investment products made available to their clients for which they
may charge a separate fee. No sales charge will be assessed on a purchase by any
other investment company in connection with the combination of such company with
the Trust by merger, acquisition of assets or otherwise. The Distributor will
pay authorized dealers commissions on certain net asset value purchases as
described in the SAI.
 
   
EACH FUND AND PORTFOLIO RESERVES THE RIGHT TO SUSPEND THE OFFERING OF SHARES OF
ANY CLASS OF ANY FUND OR PORTFOLIO AT ANY TIME.  Each Fund and Portfolio also
reserves the right to reject any specific purchase order, including purchases by
exchange.
    
 
CONSULT AN INVESTMENT REPRESENTATIVE OR SEE THE SAI IF YOU THINK YOU MAY QUALIFY
FOR ANY OF THESE PURCHASE PLANS. YOU MUST NOTIFY THE FUND OR PORTFOLIO AT THE
TIME OF PURCHASE WHENEVER A REDUCED SALES CHARGE OR NET ASSET VALUE PURCHASE
APPLIES.
 
   
CLASS B SHARES
    
 
Class B shares are offered at the NAV next calculated after receipt of a
properly completed purchase order, without an initial sales charge. The entire
amount of the purchase price is invested in the Fund selected. However, Class B
shares have higher distribution and service fees than Class A shares for eight
years. Also,
                                       56
<PAGE>   59
 
   
if you redeem Class B shares within five years of purchase (four years in the
case of Class B shares of the Short Term High Quality Bond Fund), you generally
must pay a contingent deferred sales charge.
    
 
The proceeds from any contingent deferred sales charges are paid to the
Distributor to defray expenses for providing distribution services for Class B
shares. Examples of such expenses include compensation to salespeople and
selected dealers. The Distributor currently pays authorized dealers commissions
of 4.00% of the price of Class B shares sold by them (3.00% for Class B shares
of the Short Term High Quality Bond Fund).
 
CONTINGENT DEFERRED SALES CHARGE.  Class B shares redeemed within five years of
purchase are subject to a contingent deferred sales charge according to the
following schedule. Class B shares purchased by exchange will be subject to a
contingent deferred sales charge using the schedule of the Fund originally
purchased. Shares purchased through reinvestment of dividends or capital gain
distributions are not subject to a contingent deferred sales charge.
 
Class B shares of all Funds (except for the Short Term High Quality Bond Fund)
and Class B shares of all Portfolios:
 
<TABLE>
<CAPTION>
                  YEAR OF
                REDEMPTION                        Contingent
              AFTER PURCHASE                 Deferred Sales Charge
- ------------------------------------------------------------------
<S>                                          <C>
First......................................          5.00%
Second.....................................          4.00%
Third......................................          3.00%
Fourth.....................................          2.00%
Fifth......................................          1.00%
Sixth and following........................          0.00%
</TABLE>
 
Class B shares of the Short Term High Quality Bond Fund:
 
<TABLE>
<CAPTION>
                 YEAR OF
               REDEMPTION                         Contingent
             AFTER PURCHASE                  Deferred Sales Charge
- ------------------------------------------------------------------
<S>                                          <C>
First....................................            4.00%
Second...................................            3.00%
Third....................................            2.00%
Fourth...................................            1.00%
Fifth and following......................            0.00%
</TABLE>
 
Class B shares of certain Funds purchased prior to March 20, 1998 may be subject
to a different contingent deferred sales charge schedule, as described in the
SAI.
 
   
The contingent deferred sales charge is calculated by applying the above
percentages to the lesser of (1) the NAV of the redeemed shares at the time they
were purchased or (2) the NAV of the redeemed shares at the time of redemption.
This means that no contingent deferred sales charge will be charged on any NAV
increases above the initial purchase price. Shares are redeemed in the order
that results in the lowest possible rate being charged. Accordingly, they will
be redeemed first from shares purchased through reinvested dividends or capital
gain distributions and then in the order of purchase.
    
 
Here is an example:
 
An investor purchases 100 Class B shares at $10 per share -- for a total cost of
$1,000. In the second year after the purchase, the NAV has risen to $12 per
share, and the investor has acquired 10 more shares through dividend
reinvestment.
 
At that time, the investor decides to make the first redemption. The transaction
includes 50 shares at $12 per share -- for a total of $600.
 
The first 10 shares to be redeemed will not be subject to any charge because of
the 10 shares received from dividend reinvestment.
 
As for the other 40 shares, the charge will be applied only to the original cost
of $10 per share. The NAV increase of $2 per share will not be considered. As a
result, $400 of the redemption proceeds (40 X $10) will be charged a rate of 4%,
which is the second-year rate shown in the table above. The resulting sales
charge will be 4% X $400, which will be $16.
 
The contingent deferred sales charge may be waived for redemptions of Class B
shares under these circumstances:
 
   
- - Following the death or post-purchase disability of a shareholder, as defined
  in Section 72(m)(7) of the Code;
    
 
   
- - In connection with certain distributions from an IRA or other retirement plan,
  as described in the SAI, including IRA distributions made to shareholders over
  age 59 1/2;
    
 
   
- - According to a systematic withdrawal plan -- but limited to 33% annually of
  the value of the account at the time the plan is established; and
    
 
   
- - In connection with the liquidation by the Fund or Portfolio of a shareholder's
  account as described under "How to Sell Shares."
    
 
                                       57
<PAGE>   60
 
YOU MUST NOTIFY THE FUND OR PORTFOLIO WHENEVER YOU ARE ENTITLED TO A WAIVER OR
REIMBURSEMENT OF CDSC.
 
   
CONVERSION FEATURE.  Class B shares that remain outstanding for eight years will
generally convert to Class A shares of the same Fund or Portfolio based on the
relative NAVs at the time of conversion.
    
 
   
DISTRIBUTION OF INCOME AND CAPITAL GAINS
    
 
The Funds and Portfolios distribute dividends from net investment income (which
is essentially interest and dividends from securities held), minus expenses.
They also make capital gain distributions if realized gains from the sale of
securities exceed realized losses. The amount of dividends of net investment
income and distributions of net realized long- and short-term capital gains
payable to shareholders will be determined separately for each Fund or
Portfolio. Dividends from the net investment income of the Money, Fixed-Income
and Municipal Funds and the Balanced, Flexible Income and Income Portfolios will
normally be declared daily and paid monthly. Dividends from the net investment
income of the Bond & Stock and Growth & Income Funds and the Conservative Growth
Portfolio will normally be declared and paid quarterly. Dividends from the net
investment income of the Growth Fund and the Strategic Growth Portfolio will
normally be declared and paid semiannually. Dividends from the net investment
income of the Northwest, Emerging Growth and International Growth Funds will
normally be declared and paid annually. Except as otherwise specified, the Funds
and Portfolios distribute capital gains, if any, at least annually, normally in
December.
 
You have three choices regarding what you do with dividends and capital gain
distributions. You can make your choice at the time of your initial purchase or
by contacting the Funds' offices or your investment representative. The options
include:
 
AUTOMATIC REINVESTMENT.  This procedure is automatically effective unless you
choose another option. All dividends and capital gain distributions are
reinvested into additional shares of the Fund or Portfolio.
 
REINVEST DIVIDENDS IN ANOTHER FUND OR PORTFOLIO. Income dividends may be
automatically invested in the same class of shares of another Fund or Portfolio,
provided that Fund or Portfolio is available for sale in your state of
residence.
 
CASH PAYMENT OF ALL DISTRIBUTIONS.  All dividends and capital gain distributions
are deposited to your pre-authorized bank account or paid by check.
 
Reinvestments of income dividends and capital gain distributions are made at the
closing NAV on the day dividends or distributions are deducted from the Fund's
assets.
 
   
If you've chosen to receive dividends or capital gain distributions in cash and
your check is returned as undeliverable, the Funds and Portfolios reserve the
right (but are not obligated) to reinvest your check at the then-current NAV and
to automatically reinvest subsequent dividends and capital gain distributions in
your account. The Funds and Portfolios may also automatically reinvest dividends
or distributions of $10 or less.
    
 
   
HOW CAN I SELL SHARES?
    
 
   
You may redeem shares at any time in the following ways. The price paid per
share will be the next NAV that is calculated (less any applicable CDSC).
    
 
   
TELEPHONE.  You may authorize telephone transactions on your account
application. Provided you have pre-authorized these transactions, you may redeem
or exchange shares by telephoning 800-222-5852. You may also request these
transactions through your investment representative. Proceeds may be directed to
a pre-authorized bank or broker account or to the address of record for the
account. Exchanges also may be made by telephone.
    
 
It may be difficult to reach the Trusts' offices by telephone during periods of
unusual economic or market activity. Please be persistent if this occurs. The
Funds' and Portfolios' transfer agent is committed to extending its 5:00 a.m. to
6:00 p.m. Pacific time business hours during such periods.
 
   
WRITTEN REQUEST.  You may also sell shares by writing the Trusts' offices.
Written requests may require a signature guarantee, as discussed below, and the
return of any outstanding share certificates. Changes in pre-authorized
redemption instructions or your account registration may also require signature
guarantees. For your protection, the signature(s) must be guaranteed by an
eligible guarantor institutions which includes banks, credit unions, broker
dealers,
    
 
                                       58
<PAGE>   61
 
national securities exchanges, savings institutions as well as medallion
signature guarantee.
 
PROMPT PAYMENT.  Payment normally will be made on the next business day after
redemption, but no later than seven days after the transaction, unless you
recently purchased Fund shares by check or Automated Clearing House transfer. In
that case, redemption proceeds may be delayed for up to 15 days, until the
Transfer Agent verifies collection of funds. Redemption proceeds will be sent by
check or Automated Clearing House transfer to your bank account without charge.
Wire redemption proceeds may be subject to a $10 fee. The receiving bank also
may charge a fee.
 
SYSTEMATIC WITHDRAWAL PLAN.  Shareholders may choose to receive specific cash
withdrawals on a periodic basis. A $5,000 minimum balance in the applicable Fund
or $10,000 in the applicable Portfolio is required to establish a systematic
withdrawal plan (the minimum balance requirement is waived for IRA accounts).
Shares of the Fund or Portfolio will be redeemed to provide the requested
payment. Naturally, withdrawals that continually exceed dividend income and
capital gains will eventually exhaust the account. Class B shareholders may use
a systematic withdrawal plan to redeem up to 12% of the beginning balance
annually without incurring a contingent deferred sales charge. The beginning
balance is the account balance at the time the plan is established.
 
   
OTHER CONSIDERATIONS.  It is costly to maintain small accounts. Accordingly, an
account may be closed after 90 days' written notice if the total account value
falls below a minimum (currently $7,000 for the Portfolios and $700 for the
Funds or, in the case of an IRA account, $500 for the Portfolios and $300 for
the Funds) when any transfer or redemption is made. Shares will be redeemed at
the next calculated NAV, less any applicable CDSC, on the day the account is
closed. To prevent an account closure, you may purchase shares to bring your
account balance above the minimum during the 90-day grace period.
    
 
IRAS AND OTHER TAX-SHELTERED RETIREMENT PLANS
 
Shares of the Funds or Portfolios may be appropriate for many retirement plans,
including IRAs. Retirement plan contributions are tax deductible in some cases,
and earnings compound on a tax-deferred basis until withdrawn.
 
Information about IRAs and other qualified retirement plans is available from
the Trusts' offices or your Investment Representative.
 
   
HOW CAN I EXCHANGE MY SHARES?
    
 
You may exchange shares of any of the Funds or Portfolios for shares of the same
class of any other of the Funds or Portfolios. Exchanges of shares are sales and
may result in a gain or loss for income tax purposes.
 
Exchanges are made at the relative NAVs of the shares being exchanged. No
additional sales charge will be incurred when exchanging shares from a Fund
which imposes an initial or contingent deferred sales charge. Any contingent
deferred sales charge on the subsequent sale of shares acquired by exchange will
be based on the contingent deferred sales charge schedule of the Fund from which
the shares were initially purchased. Shares exchanged from a Money Fund will be
subject to the acquired Fund's sales charge unless the shares given in exchange
were previously exchanged from a Fund that imposes an initial or contingent
deferred sales charge.
 
All exchanges are subject to the minimum investment requirements of the Fund or
Portfolio being acquired and to its availability for sale in your state of
residence. You may arrange for automatic monthly exchanges. The Funds and
Portfolios reserve the right to refuse any order for the purchase of shares,
including those by exchange. In particular, a pattern of exchanges that
coincides with a "market timing" strategy may be disruptive to a Fund or
Portfolio and, consequently, may be disallowed.
 
DIVIDENDS, CAPITAL GAINS AND TAXES
 
   
Each Fund and Portfolio will distribute substantially all of its net investment
income and net realized capital gain on a current basis.
    
 
   
You are responsible for federal income tax (and state and local income taxes, if
applicable) on dividends and capital gain distributions. This is true whether
such dividends or distributions are paid in cash or reinvested in additional
shares.
    
 
Generally, dividends paid by the Funds and Portfolios from interest, dividends
or net short-term capital gains will be taxed as ordinary income. Distributions
designated by the Fund or Portfolio as deriving from net gains on securities
held for more than one year are
                                       59
<PAGE>   62
   
taxable as such (generally at a 20% tax rate), regardless of how long you have
held your shares.
    
 
   
A dividend or distribution made shortly after the purchase of shares of a Fund
or Portfolio by a shareholder, although in effect a return of capital to that
particular shareholder, would be taxable to him or her as described above.
    
 
Because of tax law requirements, you must provide the Trusts an accurate and
certified taxpayer identification number (for individuals, a Social Security
number) to avoid the 31% "back-up" withholding tax.
 
Early in each calendar year each Fund and Portfolio will notify you of the
amount and tax status of distributions paid to you for the preceding year.
 
   
A Portfolio's use of a fund-of-funds structure could affect the amount, timing
and character of distributions to shareholders. See "Taxes" in the Statement of
Additional Information.
    
 
   
Any gain resulting from the sale or exchange of your shares will generally also
be subject to tax. You should consult your tax advisor for more information on
your own tax situation, including possible foreign, state and local taxes.
    
 
   
ADDITIONAL CONSIDERATIONS FOR SHAREHOLDERS OF THE MUNICIPAL FUNDS, THE
TAX-EXEMPT MONEY MARKET FUND, AND THE CALIFORNIA MONEY MARKET FUND.
Distributions designated as "exempt-interest dividends" by any of the Municipal
Funds, the Tax-Exempt Money Market Fund or the California Money Market Fund are
not generally subject to federal income tax. However, if you receive social
security or railroad retirement benefits, you should consult your tax adviser to
determine what effect, if any, an investment in the fund may have on the federal
taxation of your benefits. In addition, an investment in the Fund may result in
liability for federal alternative minimum tax, both for individual and corporate
shareholders.
    
 
   
ADDITIONAL CONSIDERATIONS FOR SHAREHOLDERS OF THE FLORIDA INSURED MUNICIPAL
FUND.  It is expected that shares of the Florida Insured Municipal Fund held by
a Florida resident will be exempt from the Florida intangible personal property
tax and that a portion of the dividends paid by the California Money Fund,
California Municipal Fund and the California Insured Intermediate Municipal Fund
will be exempt from California State personal income tax, but not from
California State franchise tax or California State corporate income tax.
Corporate taxpayers should consult their tax advisor concerning the Florida and
California state tax treatment of investments in these funds.
    
 
   
ADDITIONAL CONSIDERATIONS FOR SHAREHOLDERS OF THE INTERNATIONAL GROWTH
FUND.  The International Growth Fund's investments in foreign securities may be
subject to foreign withholding taxes. In that case, the Fund's yield on those
securities would be decreased. Shareholders may be entitled to claim a credit or
deduction with respect to foreign taxes. In addition, the Fund's investments in
foreign securities or foreign currencies may increase or accelerate the Fund's
recognition of ordinary income and may affect the timing or amount of the Fund's
distributions.
    
 
   
THE INFORMATION CONTAINED IN THIS PROSPECTUS IS NOT A COMPLETE DESCRIPTION OF
THE FEDERAL, STATE OR LOCAL TAX CONSEQUENCES OF INVESTING IN THE FUNDS OR
PORTFOLIOS. YOU SHOULD CONSULT YOUR TAX ADVISOR BEFORE INVESTING IN THE FUNDS OR
PORTFOLIOS.
    
 
                                  ORGANIZATION
   
HOW NAV IS DETERMINED
    
 
   
Investment securities and other assets are valued primarily on the basis of
market quotations or, if quotations are not readily available, by a method that
the Board of Trustees believes accurately reflects fair value. Foreign
securities are valued on the basis of quotations from the primary market in
which they are traded, and are translated from the local currency into U.S.
dollars using current exchange rates. As a result, changes in the value of those
currencies in relation to the U.S. dollar may affect the Funds' NAV. Because
foreign markets may be open at different times than the New York Stock Exchange,
the value of the Funds' shares may change on days when shareholders are not able
to buy or sell them. If events materially affecting the values of the Funds'
foreign investments occur between the closed foreign markets and the close of
regular trading on the New York Stock Exchange, those investments may be valued
at their fair value. The NAVs are determined at the end of each business day of
the New York Stock Exchange or at 1:00 p.m. Pacific time, whichever is earlier.
    
 
                                       60
<PAGE>   63
 
ADVISOR AND SUB-ADVISORS
 
The Funds and Portfolios are managed by WM Advisors, Inc., which is referred to
as the Advisor in this Prospectus. The Advisor's address is 1201 Third Avenue,
Suite 1400, Seattle, Washington 98101. The Advisor has delegated portfolio
management responsibilities in respect of the Growth, California Municipal,
Florida Insured Municipal, California Insured Intermediate Municipal and
International Growth Funds, and it is expected that the Advisor will, effective
January 1, 1999, delegate portfolio management responsibility in respect of the
Tax-Exempt Bond Fund, to a sub-advisor. Each Fund and Portfolio may, to the
extent permitted under the 1940 Act, place portfolio transactions with (and pay
brokerage commissions to) affiliates of the Advisor and the sub-advisors to the
Funds indicated below. For more information see the SAI.
 
The Advisor has been in the business of investment management since 1944. Its
responsibilities include formulating each Fund's and Portfolio's investment
policies (subject to the terms of this Prospectus), analyzing economic trends,
directing and evaluating the investment services provided by the sub-advisors
and monitoring each Fund's or Portfolio's investment performance and reporting
to the Board of Trustees, as well as providing certain administrative services
to the Funds and Portfolios. In connection with its service as investment
advisor to each Fund and Portfolio, the Advisor may engage one or more
sub-advisors to provide investment advisory services to any of the Funds or
Portfolios and may change or eliminate any such sub-advisor if it deems such
action to be in the best interests of a Fund or Portfolio and its shareholders.
Where the Advisor has not delegated such duties to a sub-advisor, it is
responsible for managing the investment and reinvestment of the Fund's or
Portfolio's assets. The Advisor is an indirect wholly owned subsidiary of
Washington Mutual, Inc. ("Washington Mutual"), a publicly owned financial
services company.
 
The following organizations, under the supervision of the Advisor, act as
sub-advisors to the Funds indicated below, and are responsible for continuously
reviewing, supervising and administering such Funds' respective investment
programs:
 
JANUS, 100 Fillmore Street, Denver, Colorado 80206, acts as sub-advisor to the
Growth Fund. Janus is an indirectly majority owned subsidiary of Kansas City
Southern Industries, Inc., a publicly traded holding company whose primary
subsidiaries are engaged in transportation, information processing and financial
services. Janus has been providing investment advice to mutual funds or other
large institutional clients since 1970. As of March 27, 1998, Janus' assets
under management were in excess of $67.8 billion.
 
VAN KAMPEN, One Parkview Plaza, Oakbrook, Illinois 60181, acts as sub-advisor to
the California Municipal, California Insured Intermediate Municipal and Florida
Insured Municipal Funds. Subject to shareholder approval, it is expected that,
effective January 1, 1999, Van Kampen will become sub-advisor to the Tax-Exempt
Bond Fund. Van Kampen is an indirect wholly owned subsidiary of Morgan Stanley,
Dean Witter, Discover & Co., a publicly held global financial services company.
Van Kampen provides investment advice to a wide variety of individual,
institutional and investment company clients and, together with its affiliates,
had aggregate assets under management or supervision, as of June 5, 1998, of
more than $3.9 billion.
 
WARBURG, 466 Lexington Avenue, New York, New York 10017, acts as sub-advisor to
the International Growth Fund. Warburg is a professional investment counseling
firm which provides investment services to investment companies, employee
benefit plans, endowment funds, foundations and other institutions and
individuals. As of March 30, 1998, Warburg managed approximately $15 billion of
assets. Incorporated in 1970, Warburg is indirectly controlled by Warburg,
Pincus & Co. ("WP & Co."), which has no business other than being a holding
company of Warburg and its affiliates. Lionel I. Pincus, the managing partner of
WP & Co., may be deemed to control both WP & Co. and Warburg.
 
INDIVIDUAL FUND MANAGERS
 
Gary J. Pokrzywinski, CFA, Vice President and Senior Portfolio Manager of the
Advisor, is primarily responsible for the day-to-day management of the High
Yield, Income, Short Term High Quality Bond and Target Maturity 2002 Funds. He
has managed such Funds since March 1998, 1992, January 1998 and January 1998,
respectively, and has been employed by the Advisor since 1992. Effective
November 1, 1998, Craig V. Sosey, Vice President and Portfolio Manager of the
Advisor, is primarily responsible for the day-to-day management of the U.S.
Government Securities
 
                                       61
<PAGE>   64
 
   
Fund. He has been employed by the Advisor since May 1998. Prior to that he was
the Assistant Treasurer of California Federal Bank, where he worked for over
eight years. He holds an MBA from University of California Berkeley. A team of
investment professionals employed by the Adviser will be jointly and primarily
responsible for the day-to-day management of the Growth and Income Fund. Jeffrey
D. Huffman, CFA, Vice President and Senior Portfolio Manager of the Advisor, has
had primary responsibility for the day-to-day management of the Bond & Stock
Fund since 1995. Prior to 1995, Mr. Huffman was Vice President of Trust
Investments for First Interstate Bank since 1994 and a portfolio manager at
Safeco since 1992. David W. Simpson, CFA, Vice President and Senior Portfolio
Manager of the Advisor, has had primary responsibility for the day-to-day
management of the Northwest Fund since 1993 and he and Linda C. Walk, CFA, who
is Vice President and Portfolio Manager of the Advisor, have been co-managers of
the Emerging Growth Fund since March 1998. Mr. Simpson has been employed by the
Advisor since 1993. Prior to 1997, Ms. Walk was a portfolio manager at Laird
Norton Trust Company since 1996, a valuation consultant for Ernst & Young LLP
since 1994, and a valuation consultant for Management Advising Services since
1990. Audrey S. Quaye, CPA, Vice President and Portfolio Manager of the Advisor,
is primarily responsible for the day-to-day management of the Money Market Fund,
the Tax-Exempt Money Market Fund and the California Money Fund. She has managed
such Funds since 1997, 1997, and March 1998, respectively, and has been employed
at the Advisor since 1996. Prior to 1996, Ms. Quaye worked at the Benham Group
as a municipal credit analyst. Stephen C. Scott, Senior Portfolio Manager, has
had primary responsibility for the day-to-day management of the Strategic Growth
Portfolio, the Conservative Growth Portfolio, the Balanced Portfolio, the
Flexible Income Portfolio and the Income Portfolio since their inception. Mr.
Scott has been employed by WM Advisors, Inc since March of 1998, prior to that
date he was employed by Sierra Investment Services Corporation with essentially
identical responsibility for the Portfolios.
    
 
Warren B. Lammert has had primary responsibility for the day-to-day management
of the Growth Fund since its inception. Mr. Lammert is a Vice President of
Janus. Mr. Lammert joined Janus in 1987, and his duties at Janus include the
management of separate equity accounts.
 
   
Since May 1992, Joseph A. Piraro, Vice President of Van Kampen, has had primary
responsibility for the day-to-day management of the California Municipal Fund.
Mr. Piraro has been employed by Van Kampen since 1992. Mr. Piraro has also had
primary responsibility for the day-to-day management of the California Insured
Intermediate Municipal Fund since the Fund's inception. Since January 1997,
Thomas M. Byron, Vice President of Van Kampen, has had primary responsibility
for the day-to-day management of the Florida Insured Municipal Fund. Mr. Byron
has been at Van Kampen for over 15 years and prior to taking over responsibility
for managing the Fund, Mr. Byron was Head Buyer and Manager of Van Kampen's Unit
Investment Trust desk. David C. Johnson, Senior Vice President of Van Kampen,
has primary responsibility for the day-to-day management of the Tax-Exempt Bond
Fund's portfolio since January 1, 1999. Mr. Johnson has been employed by Van
Kampen since 1989.
    
 
The following people are primarily responsible for the day-to-day management of
the International Growth Fund: Harold W. Ehrlich, CFA, CIC, Managing Director of
Warburg, has 14 years of investment experience. Prior to 1998, Mr. Ehrlich was a
senior vice president, portfolio manager and analyst at Templeton Investment
Counsel Inc. Todd Jacobson, CFA, Vice President of Warburg. Prior to joining
Warburg in 1997, Mr. Jacobson was an analyst at Brown Brothers Harriman from
1993 to 1997.
 
   
Each of the Funds (other than the Target Maturity 2002 Fund, which offers only
Class A shares) has adopted distribution plans, pursuant to Rule 12b-1 under the
1940 Act, applicable to Class A and Class B and shares of the Fund (each, a
"Rule 12b-1 Plan"), respectively. The Target Maturity 2002 Fund has adopted a
12b-1 Plan applicable to its Class A shares. Under the applicable Rule 12b-1
Plans, the Distributor receives a service fee at an annual rate of 0.25% of the
average daily net assets of each class. In addition, the Distributor is paid a
fee as compensation in connection with the offering and sale of Class B shares
at an annual rate of 0.75% of the average daily net assets of such shares.
    
 
   
The Distributor may, from time to time, pay to other dealers, in connection with
retail sales or the distribution of shares of a Fund or Portfolio, material
    
 
                                       62
<PAGE>   65
   
compensation in the form of merchandise or trips. Salespersons, including
representatives of WM Financial Services, Inc. (a subsidiary of Washington
Mutual), and any other person entitled to receive any compensation for selling
or servicing Fund or Portfolio shares may receive different compensation with
respect to one particular class of shares over another, and may receive
additional compensation or other incentives for selling Fund or Portfolio
shares.
    
 
   
MANAGEMENT FEES
    
 
   
During their most recent fiscal years, each of the Funds paid management fees to
the Advisor at the following rates:
    
 
   
<TABLE>
<CAPTION>
                                       Fees Paid as a Percentage
FUNDS                                        of Net Assets
- -------------------------------------------------------------------
<S>                                 <C>
Money Market Fund.................  .45%
Tax-Exempt Money Market Fund......  .45%
California Money Fund.............  .45%
Short Term High Quality Bond
  Fund............................  .50%
Target Maturity 2002 Fund.........  .25%
U.S. Government Securities Fund...  .625%
Income Fund.......................  .625%
High Yield Fund...................  .625% of the first $250 million,
                                    .50% thereafter*
Bond & Stock Fund.................  .625%
Growth & Income Fund..............  .625%
Tax-Exempt Bond Fund..............  .50%
California Municipal Fund.........  .70%
California Insured Intermediate
  Municipal Fund..................  .70%
Florida Insured Municipal Fund....  .70%
Northwest Fund....................  .625%
Growth Fund.......................  1.10%
Emerging Growth Fund..............  1.05%
International Growth Fund.........  1.10%
</TABLE>
    
 
   
*The High Yield Fund has not completed a full fiscal year. These numbers
 represent the percentages of net assets the Fund has agreed to pay the Advisor
 in its first full fiscal year.
    
 
   
The Advisor has voluntarily undertaken, through October 31, 1999, to waive a
portion of its management fees for the following Funds to the extent that total
Fund operating expenses for Class A shares would otherwise exceed the indicated
annual rates:
    
 
   
<TABLE>
<CAPTION>
                                                   Total Fund
FUNDS                                          Operating Expenses
- -----------------------------------------------------------------
<S>                                            <C>
Money Market Fund............................         0.73%
Tax-Exempt Money Market Fund.................         0.57%
</TABLE>
    
 
   
<TABLE>
<CAPTION>
                                                   Total Fund
FUNDS                                          Operating Expenses
- -----------------------------------------------------------------
<S>                                            <C>
California Money Fund........................         0.85%
Short-Term High Quality Bond Fund............         0.82%
Target Maturity 2002 Fund....................         1.00%
California Municipal Fund....................         0.88%
California Insured Intermediate Municipal
  Fund.......................................         1.00%
Florida Insured Municipal Fund...............         1.00%
Growth & Income Fund.........................         1.01%
Growth Fund..................................         1.30%
Income Portfolio.............................         1.00%
Flexible Income Portfolio....................         1.00%
</TABLE>
    
 
   
In addition, the Distributor has agreed to waive its distribution fees for Class
B shares of the following Funds to the extent that total Fund operating expenses
for Class B shares would otherwise exceed the indicated annual rates.
    
 
   
<TABLE>
<CAPTION>
                                                   Total Fund
FUNDS                                          Operating Expenses
- -----------------------------------------------------------------
<S>                                            <C>
Income Fund..................................         1.83%
Growth & Income Fund.........................         1.76%
Growth Fund..................................         2.05%
</TABLE>
    
 
   
The Advisor has also undertaken to waive its management fees and reimburse
expenses to the extent necessary to limit the total Fund operating expenses for
Class A shares of the following funds to the indicated annual rates through
November 1, 2000 (except that beginning on November 1, 1999, the waivers and
reimbursements for the Tax-Exempt Money Market Fund and the Short Term High
Quality Bond Fund may be adjusted, so long as total fund operating expenses as a
percentage of assets do not exceed the annual rate of 0.72% and 1.00%,
respectively):
    
 
   
<TABLE>
<CAPTION>
                                                   Total Fund
FUNDS                                          Operating Expenses
- -----------------------------------------------------------------
<S>                                            <C>
Money Market Fund............................         0.73%
Tax-Exempt Money Market Fund.................         0.57%
Short Term High Quality Bond Fund............         0.82%
U.S. Government Security Fund................         0.96%
Tax-Exempt Bond Fund.........................         0.88%
California Municipal Fund....................         0.88%
Income Fund..................................         1.04%
Growth & Income Fund.........................         1.00%
Growth Fund..................................         1.30%
</TABLE>
    
 
   
In addition, the Advisor has undertaken, through October 31, 1999, to waive all
of its management fees for the High Yield Fund.
    
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY
REPRESENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS AND IN THE FUNDS'
AND PORTFOLIOS' OFFICIAL SALES LITERATURE IN CONNECTION WITH THE OFFERING OF THE
FUNDS' AND PORTFOLIOS' SHARES, AND, IF GIVEN OR MADE, SUCH OTHER INFORMATION OR
REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY THE FUNDS
OR PORTFOLIOS. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER IN ANY STATE IN
WHICH, OR TO ANY PERSON TO WHOM, SUCH OFFER MAY NOT LAWFULLY BE MADE.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                                       63
<PAGE>   66
 
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
   
The financial highlights table is intended to help you understand the Funds' and
Portfolios' financial performance for the past 5 years (or, if shorter, the
period of the Fund's or Portfolios' operations). Certain information reflects
financial results for a single Fund or Portfolio share. The total returns in the
table represent the rate that an investor would have earned (or lost) on an
investment in the Fund or Portfolio (assuming reinvestment of all dividends and
distributions). The information provided below with respect to each of the Funds
within WM Trust I (Money Market, Tax-Exempt Money Market, Income, U.S.
Government Securities, Tax-Exempt Bond, Bond & Stock, Growth & Income and
Northwest Funds) for periods prior to October 31, 1998 has been audited by
LeMaster & Daniels PLLC. The information provided below with respect to each of
the Funds within WM Trust II (California Money, Short Term High Quality Bond,
Target Maturity 2002, California Municipal, California Insured Intermediate
Municipal, Florida Insured Municipal, Growth, International Growth and Emerging
Growth Funds) and the Portfolios for periods prior to October 31, 1998 has been
audited by PricewaterhouseCoopers LLP. The information for the period ended
October 31, 1998 has been audited by Deloitte & Touche LLP. The Reports of
Independent Accountants for each such period along with the Funds' and
Portfolios' financial statements, are included in the Annual Reports to
Shareholders for such periods, which are available upon request.
    
   
  MONEY MARKET FUND   CLASS A SHARES(15)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL
                                                              PERIOD ENDED               YEAR ENDED DECEMBER 31,
                                                              OCTOBER 31,    -----------------------------------------------
                                                                1998(1)       1997      1996      1995      1994      1993
                                                              --------------------------------------------------------------
<S>                                                           <C>            <C>       <C>       <C>       <C>       <C>
Net Asset Value, Beginning of Period........................    $1.0000      $1.0000   $1.0000   $1.0000   $1.0000   $1.0000
                                                                -------      -------   -------   -------   -------   -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income.....................................      0.041       0.0493    0.0476    0.0519    0.0341     0.024
  Net Realized & Unrealized Gain on Investments.............          -            -         -         -         -         -
                                                                -------      -------   -------   -------   -------   -------
    Total From Investment Operations........................      0.041       0.0493    0.0476    0.0519    0.0341     0.024
                                                                -------      -------   -------   -------   -------   -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................     (0.041)     (0.0493)  (0.0476)  (0.0519)  (0.0341)   (0.024)
  Distributions from Net Realized Gains.....................          -            -         -         -         -         -
                                                                -------      -------   -------   -------   -------   -------
    Total Distributions.....................................     (0.041)     (0.0493)  (0.0476)  (0.0519)  (0.0341)   (0.024)
                                                                -------      -------   -------   -------   -------   -------
Net Asset Value, End of Period..............................    $1.0000      $1.0000   $1.0000   $1.0000   $1.0000   $1.0000
                                                                =======      =======   =======   =======   =======   =======
Total Return(2).............................................      4.19%        5.04%     4.88%     5.33%     3.47%     2.41%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................   $403,443      $260,877  $229,355  $171,225  $125,651  $135,187
  Ratio of Operating Expenses to Average Net Assets(3)......      0.60%(5)     0.75%     0.79%     0.92%     0.95%     0.97%
  Ratio of Net Investment Income to Average Net Assets......      4.94%(5)     4.93%     4.77%     5.19%     3.39%     2.38%
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credits Allowed by
   the Custodian............................................      0.67%(5)     0.83%     0.89%     1.04%     1.04%     1.03%
</TABLE>
    
 
   
  MONEY MARKET FUND   CLASS B SHARES(15)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL
                                                              PERIOD ENDED          YEAR ENDED DECEMBER 31,
                                                              OCTOBER 31,    --------------------------------------
                                                                1998(1)       1997      1996      1995     1994(14)
                                                              -----------------------------------------------------
<S>                                                           <C>            <C>       <C>       <C>       <C>
Net Asset Value, Beginning of Period........................    $1.0000      $1.0000   $1.0000   $1.0000   $1.0000
                                                                -------      -------   -------   -------   -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income.....................................      0.035       0.0407    0.0384    0.0421     0.018
  Net Realized & Unrealized Gain on Investments.............          -            -         -         -         -
                                                                -------      -------   -------   -------   -------
    Total From Investment Operations........................      0.035       0.0407    0.0384    0.0421     0.018
                                                                -------      -------   -------   -------   -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................     (0.035)     (0.0407)  (0.0384)  (0.0421)   (0.018)
  Distributions from Net Realized Gains.....................          -            -         -         -         -
                                                                -------      -------   -------   -------   -------
    Total Distributions.....................................     (0.035)     (0.0407)  (0.0384)  (0.0421)   (0.018)
                                                                -------      -------   -------   -------   -------
Net Asset Value, End of Period..............................    $1.0000      $1.0000   $1.0000   $1.0000   $1.0000
                                                                =======      =======   =======   =======   =======
Total Return(2).............................................      3.52%        4.15%     3.91%     4.30%     2.78%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................     $6,619         $471      $117       $74       $11
  Ratio of Operating Expenses to Average Net Assets(3)......      1.64%(5)     1.59%     1.69%     1.94%     1.43%(5)
  Ratio of Net Investment Income to Average Net Assets......      3.96%(5)     4.15%     3.87%     4.19%     3.24%(5)
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credits Allowed by
   the Custodian............................................      1.65%(5)     1.80%     1.90%     2.10%     2.62%(5)
</TABLE>
    
 
   
Footnotes appear on page 84
    
                                       64
<PAGE>   67
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
   
  TAX-EXEMPT MONEY MARKET FUND   CLASS A SHARES(16)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL
                                                              PERIOD ENDED                 YEAR ENDED DECEMBER 31,
                                                              OCTOBER 31,    ---------------------------------------------------
                                                                1998(1)       1997       1996       1995       1994       1993
                                                              ------------------------------------------------------------------
<S>                                                           <C>            <C>        <C>        <C>        <C>        <C>
Net Asset Value, Beginning of Period........................    $1.0000      $1.0000    $1.0000    $1.0000    $1.0000    $1.0000
                                                                -------      -------    -------    -------    -------    -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income.....................................      0.026       0.0314     0.0301      0.034     0.0235       .020
  Net Realized & Unrealized Gain on Investments.............          -            -          -      0.000(8)       -          -
                                                                -------      -------    -------    -------    -------    -------
    Total From Investment Operations........................      0.026       0.0314     0.0301      0.034     0.0235       .020
                                                                -------      -------    -------    -------    -------    -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................     (0.026)     (0.0314)   (0.0301)    (0.034)   (0.0235)     (.020)
  Distributions from Net Realized Gains.....................          -            -          -      0.000(8)       -          -
                                                                -------      -------    -------    -------    -------    -------
    Total Distributions.....................................     (0.026)      0.0314    (0.0301)    (0.034)   (0.0235)     (0.20)
                                                                -------      -------    -------    -------    -------    -------
Net Asset Value, End of Period..............................    $1.0000      $1.0000    $1.0000    $1.0000    $1.0000    $1.0000
                                                                =======      =======    =======    =======    =======    =======
Total Return(2).............................................      2.60%        3.18%      3.05%      4.01%      2.37%      2.06%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................    $25,441      $32,134    $31,974    $30,988    $33,612    $34,513
  Ratio of Operating Expenses to Average Net Assets(3)......      0.55%(5)     0.57%      0.57%      0.61%      0.60%      0.50%
  Ratio of Net Investment Income to Average Net Assets......      3.09%(5)     3.14%      3.01%      3.39%      2.33%      2.03%
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credits Allowed by
   the Custodian............................................      0.72%(5)     0.71%      0.72%      0.81%      0.76%      0.77%
</TABLE>
    
 
   
  TAX-EXEMPT MONEY MARKET FUND   CLASS B SHARES(16)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL
                                                              PERIOD ENDED     YEAR ENDED DECEMBER 31,     MAY 2, 1994 TO
                                                              OCTOBER 31,    ---------------------------    DECEMBER 31,
                                                                1998(1)       1997      1996      1995        1994(4)
                                                              -----------------------------------------------------------
<S>                                                           <C>            <C>       <C>       <C>       <C>
Net Asset Value, Beginning of Period........................    $1.0000      $1.0000   $1.0000   $1.0000      $1.0000
                                                                -------      -------   -------   -------      -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income.....................................      0.018       0.0223    0.0199     0.023       0.0097
  Net Realized & Unrealized Gain on Investments.............          -            -         -      0.00(8)          -
                                                                -------      -------   -------   -------      -------
    Total From Investment Operations........................      0.018       0.0223    0.0199     0.023       0.0097
                                                                -------      -------   -------   -------      -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................     (0.018)     (0.0223)  (0.0199)   (0.023)     (0.0097)
  Distributions from Net Realized Gains.....................          -            -         -      0.00(8)          -
                                                                -------      -------   -------   -------      -------
    Total Distributions.....................................     (0.018)     (0.0223)  (0.0199)   (0.023)     (0.0097)
                                                                -------      -------   -------   -------      -------
Net Asset Value, End of Period..............................    $1.0000      $1.0000   $1.0000   $1.0000      $1.0000
                                                                =======      =======   =======   =======      =======
Total Return(2).............................................      1.79%        2.26%     2.01%     2.83%        1.45%(5)
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................       $212          $12        $2        $1           $1
  Ratio of Operating Expenses to Average Net Assets(3)......      1.63%(5)     1.50%     1.53%     1.73%        1.66%(5)
  Ratio of Net Investment Income to Average Net Assets......      2.01%(5)     2.32%     1.99%     2.12%        1.38%(5)
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credits Allowed by
   the Custodian............................................      1.80%(5)     2.27%     4.22%     3.66%        3.61%(5)
</TABLE>
    
 
   
Footnotes appear on page 84
    
                                       65
<PAGE>   68
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  CALIFORNIA MONEY FUND   CLASS A SHARES
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL
                                                              PERIOD ENDED                  YEAR ENDED JUNE 30,
                                                               OCTOBER 31,    -----------------------------------------------
                                                                 1998(1)      1998(6)     1997      1996      1995      1994
                                                              ---------------------------------------------------------------
<S>                                                           <C>             <C>        <C>       <C>       <C>       <C>
Net Asset Value, Beginning of Period........................       $1.00       $1.00      $1.00     $1.00     $1.00     $1.00
                                                                 -------      ------     ------    ------    ------    ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income.....................................       0.008       0.027      0.028     0.029     0.028     0.018
  Net Realized & Unrealized Gain on Investments.............           -           -          -         -         -         -
                                                                 -------      ------     ------    ------    ------    ------
    Total From Investment Operations........................       0.008       0.027      0.028     0.029     0.028     0.018
                                                                 -------      ------     ------    ------    ------    ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................      (0.008)     (0.027)    (0.028)   (0.029)   (0.028)   (0.018)
  Distributions in Excess of Net Investment Income..........           -           -          -         -         -         -
  Distributions from Net Realized Gains.....................           -           -          -         -         -         -
  Distributions in Excess of Net Realized Gains.............           -           -          -         -         -         -
  Distributions from Capital................................           -           -          -         -         -         -
                                                                 -------      ------     ------    ------    ------    ------
    Total Distributions.....................................      (0.008)     (0.027)    (0.028)   (0.029)   (0.028)   (0.018)
                                                                 -------      ------     ------    ------    ------    ------
Net Asset Value, End of Period..............................       $1.00       $1.00      $1.00     $1.00     $1.00     $1.00
                                                                 =======      ======     ======    ======    ======    ======
Total Return(2).............................................       0.99%       2.73%      2.81%     3.00%     2.79%     1.81%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................     $37,167      $37,403    $42,923   $51,211   $48,836   $62,500
  Ratio of Operating Expenses to Average Net Assets(3)......       0.73%(5)    0.82%      0.85%     0.85%     0.85%     0.85%
  Ratio of Net Investment Income to Average Net Assets......       2.31%(5)    2.71%      2.75%     2.94%     2.73%     1.80%
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credits Allowed by
   the Custodian............................................       0.87%(5)    0.99%      1.14%     1.14%     1.15%     1.27%
</TABLE>
    
 
  CALIFORNIA MONEY FUND   CLASS B SHARES
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL
                                                              PERIOD ENDED             YEAR ENDED JUNE 30,
                                                               OCTOBER 31,    --------------------------------------
                                                                 1998(1)      1998(6)     1997      1996     1995(7)
                                                              ------------------------------------------------------
<S>                                                           <C>             <C>        <C>       <C>       <C>
Net Asset Value, Beginning of Period........................      $1.00        $1.00      $1.00     $1.00     $1.00
                                                                 ------       ------     ------    ------    ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income.....................................      0.005        0.019      0.020     0.022     0.020
  Net Realized & Unrealized Gain on Investments.............          -            -          -         -         -
                                                                 ------       ------     ------    ------    ------
    Total From Investment Operations........................      0.005        0.019      0.020     0.022     0.020
                                                                 ------       ------     ------    ------    ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................     (0.005)      (0.019)    (0.020)   (0.022)   (0.020)
  Distributions in Excess of Net Investment Income..........          -            -          -         -         -
  Distributions from Net Realized Gains.....................          -            -          -         -         -
  Distributions in Excess of Net Realized Gains.............          -            -          -         -         -
  Distributions from Capital................................          -            -          -         -         -
                                                                 ------       ------     ------    ------    ------
    Total Distributions.....................................     (0.005)      (0.019)    (0.020)   (0.022)   (0.020)
                                                                 ------       ------     ------    ------    ------
Net Asset Value, End of Period..............................      $1.00        $1.00      $1.00     $1.00     $1.00
                                                                 ======       ======     ======    ======    ======
Total Return(2).............................................      0.63%        1.96%      2.03%     2.22%     2.04%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................        $58          $63        $68      $147       $79
  Ratio of Operating Expenses to Average Net Assets(3)......      1.60%(5)     1.60%      1.60%     1.60%     1.60%
  Ratio of Net Investment Income to Average Net Assets......      1.44%(5)     1.88%      2.00%     2.19%     1.98%
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credits Allowed by
   the Custodian............................................      2.05%(5)     1.82%(8)   1.89%     1.89%     1.90%
</TABLE>
    
 
   
Footnotes appear on page 84
    
                                       66
<PAGE>   69
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  SHORT TERM HIGH QUALITY BOND FUND    CLASS A SHARES
 
   
<TABLE>
<CAPTION>
                                     FISCAL                                                                           NOVEMBER 1,
                                  PERIOD ENDED                           YEAR ENDED JUNE 30,                            1993 TO
                                   OCTOBER 31,         -------------------------------------------------------         JUNE 30,
                                     1998(1)           1998(6)          1997            1996            1995            1994(4)
                                  -----------------------------------------------------------------------------------------------
<S>                               <C>                  <C>             <C>             <C>             <C>            <C>
Net Asset Value, Beginning of
Period..........................       $2.32             $2.32           $2.32           $2.35           $2.39            $2.50
                                     -------           -------         -------         -------         -------          -------
 INCOME FROM INVESTMENT
 OPERATIONS:
  Net Investment Income.........        0.04              0.13            0.14            0.15(9)         0.08             0.09
  Net Realized & Unrealized
   Gain/(Loss) on Investments...        0.03              0.00(8)         0.00(8)        (0.03)           0.02            (0.11)
                                     -------           -------         -------         -------         -------          -------
    Total From Investment
    Operations..................        0.07              0.13            0.14            0.12            0.10            (0.02)
                                     -------           -------         -------         -------         -------          -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment
   Income.......................       (0.04)            (0.13)          (0.14)          (0.15)          (0.08)           (0.09)
  Distributions in Excess of Net
   Investment Income............           -                 -               -               -           (0.06)               -
  Distributions from Net
   Realized Gains...............           -                 -               -               -               -                -
  Distributions in Excess of Net
   Realized Gains...............           -                 -               -               -               -                -
  Distributions from Capital....           -             (0.00)(8)           -           (0.00)(8)       (0.00)(8)            -
                                     -------           -------         -------         -------         -------          -------
    Total Distributions.........       (0.04)            (0.13)          (0.14)          (0.15)          (0.14)           (0.09)
                                     -------           -------         -------         -------         -------          -------
Net Asset Value, End of
Period..........................       $2.35             $2.32           $2.32           $2.32           $2.35            $2.39
                                     =======           =======         =======         =======         =======          =======
Total Return(2).................       3.11%             5.91%           6.15%           5.05%           4.42%          (0.73)%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period
   ($1,000's)...................     $32,748           $35,551         $13,685         $32,440         $43,811          $21,771
  Ratio of Operating Expenses to
   Average Net Assets(3)........       0.82%(5)          0.86%           0.82%           0.75%           0.75%            0.00%(5)
  Ratio of Net Investment Income
   to Average Net Assets........       5.44%(5)          5.71%           6.50%           6.22%           6.10%            5.70%(5)
  Portfolio Turnover Rate.......         19%              138%             51%            225%            137%              95%
  Ratio of Operating Expenses to
   Average Net Assets Without
   Fee Waivers, Expenses
   Absorbed and/or Credit
   Allowed by the Custodian.....       1.40%(5)          1.32%(10)       1.45%(10)       1.42%(10)       1.39%            1.61%(5)
</TABLE>
    
 
  SHORT TERM HIGH QUALITY BOND FUND    CLASS B SHARES
 
   
<TABLE>
<CAPTION>
                                                           FISCAL
                                                        PERIOD ENDED                         YEAR ENDED JUNE 30,
                                                         OCTOBER 31,         ----------------------------------------------------
                                                           1998(1)           1998(6)         1997           1996          1995(7)
                                                        -------------------------------------------------------------------------
<S>                                                     <C>                  <C>             <C>           <C>            <C>
Net Asset Value, Beginning of Period..................      $2.32             $2.32          $2.32          $2.35          $2.39
                                                           ------            ------          -----         ------         ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income...............................       0.04              0.12           0.12           0.13(9)        0.06
  Net Realized & Unrealized Gain/(Loss) on
   Investments........................................       0.03              0.00(8)        0.00(8)       (0.03)          0.02
                                                           ------            ------          -----         ------         ------
    Total From Investment Operations..................       0.07              0.12           0.12           0.10           0.08
                                                           ------            ------          -----         ------         ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income................      (0.04)            (0.12)         (0.12)         (0.13)         (0.06)
  Distributions in Excess of Net Investment Income....          -                 -              -              -          (0.06)
  Distributions from Net Realized Gains...............          -                 -              -              -              -
  Distributions in Excess of Net Realized Gains.......          -                 -              -              -              -
  Distributions from Capital..........................          -             (0.00)(8)          -          (0.00)(8)      (0.00)(8)
                                                           ------            ------          -----         ------         ------
    Total Distributions...............................      (0.04)            (0.12)         (0.12)         (0.13)         (0.12)
                                                           ------            ------          -----         ------         ------
Net Asset Value, End of Period........................      $2.35             $2.32          $2.32          $2.32          $2.35
                                                           ======            ======          =====         ======         ======
Total Return(2).......................................      2.85%              5.13           5.37           4.27           3.64
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)................     $3,747            $3,459           $800         $3,437         $3,015
  Ratio of Operating Expenses to Average Net
   Assets(3)..........................................      1.57%(5)          1.61%          1.57%          1.50%          1.50%
  Ratio of Net Investment Income to Average Net
   Assets.............................................      4.69%(5)          4.96%          5.75%          5.47%          5.35%
  Portfolio Turnover Rate.............................        19%              138%            51%           225%           137%
  Ratio of Operating Expenses to Average Net Assets
   Without Fee Waivers, Expenses Absorbed and/or
   Credit Allowed by the Custodian....................      2.18%(5)           2.07(10)       2.20(10)       2.17(10)       2.14(10)
</TABLE>
    
 
   
Footnotes appear on page 84
    
                                       67
<PAGE>   70
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  TARGET MATURITY 2002 FUND   CLASS A SHARES
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL                                     MARCH 20,
                                                              PERIOD ENDED        YEAR ENDED JUNE 30,        1995 TO
                                                               OCTOBER 31,    ---------------------------   JUNE 30,
                                                                 1998(1)      1998(6)     1997      1996     1995(4)
                                                              -------------------------------------------------------
<S>                                                           <C>             <C>        <C>       <C>      <C>
Net Asset Value, Beginning of Period........................     $10.86       $10.69     $10.72    $10.78    $10.00
                                                                 ------       ------     ------    ------    ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income.....................................       0.23         0.61(9)    0.62(9)   0.63      0.12
  Net Realized & Unrealized Gain/(Loss) on Investments......       0.57         0.40       0.11     (0.30)     0.66
                                                                 ------       ------     ------    ------    ------
    Total From Investment Operations........................       0.80         1.01       0.73      0.33      0.78
                                                                 ------       ------     ------    ------    ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................          -        (0.73)     (0.71)    (0.39)        -
  Distributions from Net Realized Gains.....................          -        (0.11)     (0.05)        -         -
                                                                 ------       ------     ------    ------    ------
    Total Distributions.....................................          -        (0.84)     (0.76)    (0.39)        -
                                                                 ------       ------     ------    ------    ------
Net Asset Value, End of Period..............................     $11.66       $10.86     $10.69    $10.72    $10.78
                                                                 ======       ======     ======    ======    ======
Total Return(2).............................................      7.37%        9.78%      6.95%     2.91%     7.80%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................     $2,385       $2,536     $2,816    $3,125    $2,626
  Ratio of Operating Expenses to Average Net Assets(3)......      0.64%(5)     0.62%      0.64%     0.62%     0.74%(5)
  Ratio of Net Investment Income to Average Net Assets......      5.92%(5)     5.61%      5.80%     5.66%     5.22%(5)
  Portfolio Turnover Rate...................................         0%           0%         0%        5%        0%
  Ratio of Operating Expenses to Average Net Assets Without
   Credits Allowed by the Custodian.........................          -        0.71%(10)  0.72%(10)  0.70%(10)     N/A
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credits Allowed by
   the Custodian............................................      1.47%(5)     2.63%(10)  2.89%(10)  2.55%(10)   4.71%(5)
</TABLE>
    
 
   
Footnotes appear on page 84
    
                                       68
<PAGE>   71
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
   
  U.S. GOVERNMENT SECURITIES FUND   CLASS A SHARES(17)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL
                                                              PERIOD ENDED                 YEAR ENDED DECEMBER 31,
                                                              OCTOBER 31,    ----------------------------------------------------
                                                                1998(1)        1997       1996       1995       1994       1993
                                                              -------------------------------------------------------------------
<S>                                                           <C>            <C>        <C>        <C>        <C>        <C>
Net Asset Value, Beginning of Period........................      $10.84       $10.46     $10.84      $9.64     $10.79     $10.63
                                                                --------     --------   --------   --------   --------   --------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income.....................................        0.54         0.62       0.63       0.63       0.63       0.69
  Net Realized & Unrealized Gain/(Loss) on Investments......        0.14         0.38      (0.38)      1.20      (1.15)      0.16
                                                                --------     --------   --------   --------   --------   --------
    Total From Investment Operations........................        0.68         1.00       0.25       1.83      (0.52)      0.85
                                                                --------     --------   --------   --------   --------   --------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................       (0.54)       (0.62)     (0.63)     (0.63)     (0.63)     (0.69)
                                                                --------     --------   --------   --------   --------   --------
Net Asset Value, End of Period..............................      $10.98       $10.84     $10.46     $10.84      $9.64     $10.79
                                                                ========     ========   ========   ========   ========   ========
Total Return(2).............................................       6.38%        9.92%      2.48%     19.45%    (4.91)%      8.12%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................    $266,334     $107,054   $138,159   $177,310   $188,068   $268,112
  Ratio of Operating Expenses to Average Net Assets(3)......       0.92%(5)     1.05%      0.97%      1.01%      0.97%      0.99%
  Ratio of Net Investment Income to Average Net Assets......       5.99%(5)     5.92%      6.01%      6.08%      6.19%      6.29%
  Portfolio Turnover Rate...................................         12%           6%        16%         8%        34%        51%
  Ratio of operating expenses to average net assets w/o fee
   waivers or fees reduced by credits allowed by the
   custodian................................................       1.45%(5)     1.05%      0.97%      1.01%      0.97%      0.99%
  Ratio of operating expenses to average net assets
   including interest expense...............................       1.36%(5)       N/A        N/A        N/A        N/A        N/A
</TABLE>
    
 
   
  U.S. GOVERNMENT SECURITIES FUND   CLASS B SHARES(17)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL                                  MARCH 20,
                                                              PERIOD ENDED   YEAR ENDED DECEMBER 31,      1994 TO
                                                              OCTOBER 31,    ------------------------   DECEMBER 31,
                                                                1998(1)       1997     1996     1995      1994(8)
                                                              ------------------------------------------------------
<S>                                                           <C>            <C>      <C>      <C>      <C>
Net Asset Value, Beginning of Period........................     $10.84      $10.46   $10.84    $9.64      $10.24
                                                                -------      ------   ------   ------     -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income.....................................       0.47        0.54     0.54     0.54        0.41
  Net Realized & Unrealized Gain/(Loss) on Investments......       0.12        0.38    (0.38)    1.20       (0.60)
                                                                -------      ------   ------   ------     -------
    Total From Investment Operations........................       0.59        0.92     0.16     1.74       (0.19)
                                                                -------      ------   ------   ------     -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................      (0.46)      (0.54)   (0.54)   (0.54)      (0.41)
                                                                -------      ------   ------   ------     -------
Net Asset Value, End of Period..............................     $10.97      $10.84   $10.46   $10.84       $9.64
                                                                =======      ======   ======   ======     =======
Total Return(2).............................................      5.54%       9.03%    1.58%   18.48%     (1.86)%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................    $28,747      $3,352   $2,963   $2,206      $1,063
  Ratio of Operating Expenses to Average Net Assets(3)......      1.67%(5)    1.84%    1.85%    1.84%       1.76%(5)
  Ratio of Net Investment Income to Average Net Assets......      5.24%(5)    5.08%    5.14%    5.20%       5.43%(5)
  Portfolio Turnover Rate...................................        12%          6%      16%       8%         34%
  Ratio of operating expenses to average net assets w/o fee
   waivers or fees reduced by credits allowed by the
   custodian................................................      2.23%(5)    1.84%    1.85%    1.84%       1.76%
  Ratio of operating expenses to average net assets
   including interest expense...............................      2.12%(5)      N/A      N/A      N/A         N/A
</TABLE>
    
 
   
Footnotes appear on page 84
    
                                       69
<PAGE>   72
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
   
  INCOME FUND   CLASS A SHARES(19)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL
                                                              PERIOD ENDED               YEAR ENDED DECEMBER 31,
                                                              OCTOBER 31,    ------------------------------------------------
                                                                1998(1)       1997      1996      1995      1994       1993
                                                              ---------------------------------------------------------------
<S>                                                           <C>            <C>       <C>       <C>       <C>       <C>
Net Asset Value, Beginning of Period:.......................       $9.48       $9.15     $9.44     $8.29     $9.33      $8.99
                                                                --------     -------   -------   -------   -------   --------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income.....................................        0.53        0.60      0.59      0.59      0.60       0.61
  Net Realized & Unrealized Gain/(Loss) on Investments......       (0.04)(12)    0.33    (0.29)     1.15     (1.04)      0.34
                                                                --------     -------   -------   -------   -------   --------
    Total From Investment Operations........................        0.49        0.93      0.30      1.74     (0.44)      0.95
                                                                --------     -------   -------   -------   -------   --------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................       (0.53)      (0.60)    (0.59)    (0.59)    (0.60)     (0.61)
                                                                --------     -------   -------   -------   -------   --------
Net Asset Value, End of Period..............................       $9.44       $9.48     $9.15     $9.44     $8.29      $9.33
                                                                ========     =======   =======   =======   =======   ========
Total Return(2).............................................       5.21%      10.51%     3.46%    21.58%   (4.82)%     10.82%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................    $213,397     $77,864   $86,657   $97,534   $88,102   $104,876
  Ratio of Operating Expenses to Average Net Assets(3)......       1.07%(5)    1.08%     1.03%     1.08%     1.04%      1.08%
  Ratio of Net Investment Income to Average Net Assets......       6.66%(5)    6.47%     6.52%     6.59%     6.83%      6.58%
  Portfolio Turnover Rate...................................         37%         27%       42%       43%       26%        51%
</TABLE>
    
 
   
  INCOME FUND   CLASS B SHARES(19)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL                                  MARCH 30,
                                                              PERIOD ENDED   YEAR ENDED DECEMBER 31,      1994 TO
                                                              OCTOBER 31,    ------------------------    APRIL 30,
                                                                1998(1)       1997     1996     1995      1994(18)
                                                              ------------------------------------------------------
<S>                                                           <C>            <C>      <C>      <C>      <C>
Net Asset Value, Beginning of Period:.......................      $9.49       $9.17    $9.46    $8.30       $8.85
                                                                -------      ------   ------   ------     -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income.....................................       0.46        0.53     0.52     0.51        0.40
  Net Realized & Unrealized Gain/(Loss) on Investments......      (0.04)(12)   0.32    (0.29)    1.16       (0.55)
                                                                -------      ------   ------   ------     -------
    Total From Investment Operations........................       0.42        0.85     0.23     1.67       (0.15)
                                                                -------      ------   ------   ------     -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................      (0.46)      (0.53)   (0.52)   (0.51)      (0.40)
                                                                -------      ------   ------   ------     -------
Net Asset Value, End of Period..............................      $9.45       $9.49    $9.17    $9.46       $8.30
                                                                =======      ======   ======   ======     =======
Total Return(2).............................................      4.51%       9.51%    2.59%   20.70%     (1.67)%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................    $34,321      $9,691   $7,122   $4,452      $2,299
  Ratio of Operating Expenses to Average Net Assets(3)......      1.84%(5)    1.86%    1.89%    1.91%       1.80%(5)
  Ratio of Net Investment Income to Average Net Assets......      5.89%(5)    5.65%    5.69%    5.73%       6.25%(5)
  Portfolio Turnover Rate...................................        37%         27%      42%      43%         26%
</TABLE>
    
 
   
Footnotes appear on page 84
    
                                       70
<PAGE>   73
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
   
  TAX EXEMPT BOND FUND   CLASS A SHARES(21)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL
                                                              PERIOD ENDED             YEAR ENDED DECEMBER 31,
                                                              OCTOBER 31,    -------------------------------------------
                                                                1998(1)      1997     1996     1995     1994      1993
                                                              ----------------------------------------------------------
<S>                                                           <C>            <C>     <C>      <C>      <C>       <C>
Net Asset Value, Beginning of Period........................     $8.09       $7.83    $8.02    $7.13     $8.04     $7.58
                                                                 -----       -----   ------   ------   -------   -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income.....................................      0.34        0.38     0.38     0.38      0.39      0.40
  Net Realized & Unrealized Gain/(Loss) on Investments......      0.02        0.27    (0.19)    0.89     (0.91)     0.54
                                                                 -----       -----   ------   ------   -------   -------
    Total From Investment Operations........................      0.36        0.65     0.19     1.27     (0.52)     0.94
                                                                 -----       -----   ------   ------   -------   -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................     (0.34)      (0.38)   (0.38)   (0.38)    (0.39)    (0.40)
  Distribution from Capital Gains...........................         -       (0.01)       -        -         -     (0.08)
                                                                 -----       -----   ------   ------   -------   -------
    Total Distributions.....................................     (0.34)      (0.39)   (0.38)   (0.38)    (0.39)    (0.48)
                                                                 -----       -----   ------   ------   -------   -------
Net Asset Value, End of Period..............................     $8.11       $8.09    $7.83    $8.02     $7.13     $8.04
                                                                 =====       =====   ======   ======   =======   =======
Total Return(2).............................................     4.58%       8.59%    2.52%   18.25%   (6.53)%    12.54%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................  $301,162       $188,021 $203,606 $230,055 $215,438 $259,045
  Ratio of Operating Expenses to Average Net Assets(3)......     0.84%(5)    0.80%    0.75%    0.81%     0.79%     0.81%
  Ratio of Net Investment Income to Average Net Assets......     5.14%(5)    4.84%    4.90%    5.03%     5.23%     4.97%
  Portfolio Turnover Rate...................................        6%         21%      22%       8%       12%       19%
</TABLE>
    
 
   
  TAX-EXEMPT BOND FUND   CLASS B SHARES(21)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL                                   MARCH 20,
                                                              PERIOD ENDED    YEAR ENDED DECEMBER 31,      1994 TO
                                                              OCTOBER 31,    -------------------------   DECEMBER 31,
                                                                1998(1)       1997     1996     1995       1994(18)
                                                              -------------------------------------------------------
<S>                                                           <C>            <C>      <C>      <C>       <C>
Net Asset Value, Beginning of Period........................     $8.09       $7.83    $8.02     $7.13        $7.49
                                                                 -----       -----    -----    ------      -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income.....................................      0.28        0.32     0.31      0.32         0.25
  Net Realized & Unrealized Gain/(Loss) on Investments......      0.03        0.27    (0.19)     0.89        (0.36)
                                                                 -----       -----    -----    ------      -------
    Total From Investment Operations........................      0.31        0.59     0.12      1.21        (0.11)
                                                                 -----       -----    -----    ------      -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................     (0.29)      (0.32)   (0.31)    (0.32)       (0.25)
  Distribution from Capital Gains...........................         -       (0.01)       -         -            -
                                                                 -----       -----    -----    ------      -------
    Total Distributions.....................................     (0.29)      (0.33)       -         -            -
                                                                 -----       -----    -----    ------      -------
Net Asset Value, End of Period..............................     $8.11       $8.09    $7.83     $8.02        $7.13
                                                                 =====       =====    =====    ======      =======
Total Return(2).............................................     3.88%       7.71%    1.61%    17.30%      (1.46)%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................   $17,344       $8,110   $5,266   $2,682       $1,258
  Ratio of Operating Expenses to Average Net Assets(3)......     1.62%(5)    1.62%    1.65%     1.62%        1.58%(5)
  Ratio of Net Investment Income to Average Net Assets......     4.36%(5)    4.00%    4.01%     4.18%        4.53%(5)
  Portfolio Turnover Rate...................................        6%         21%      22%        8%          12%
</TABLE>
    
 
   
Footnotes appear on page 84
    
                                       71
<PAGE>   74
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  CALIFORNIA MUNICIPAL FUND   CLASS A SHARES
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL
                                                              PERIOD ENDED                 YEAR ENDED JUNE 30,
                                                              OCTOBER 31,    ------------------------------------------------
                                                                1998(1)      1998(6)     1997      1996      1995      1994
                                                              ---------------------------------------------------------------
<S>                                                           <C>            <C>        <C>       <C>       <C>       <C>
Net Asset Value, Beginning of Period........................     $11.33      $10.92     $10.60    $10.53    $10.38     $11.22
                                                                 ------      ------     ------    ------    ------    -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investments Income....................................       0.19(9)     0.58(9)    0.59      0.60(9)   0.61       0.61
  Net Realized & Unrealized Gain/(Loss) on Investments......       0.13        0.41       0.32      0.07      0.15      (0.82)
                                                                 ------      ------     ------    ------    ------    -------
    Total From Investment Operations........................       0.32        0.99       0.91      0.67      0.76      (0.21)
                                                                 ------      ------     ------    ------    ------    -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................      (0.19)      (0.58)     (0.59)    (0.60)    (0.61)     (0.61)
  Distributions in Excess of Net Investment Income..........          -           -          -         -         -      (0.00)(8)
  Distributions from Net Realized Gains.....................          -           -          -         -     (0.00)(8)       -
  Distributions in Excess of Net Realized Gains.............          -           -          -         -         -      (0.02)
  Distributions from Capital................................          -           -          -         -         -          -
                                                                 ------      ------     ------    ------    ------    -------
    Total Distributions.....................................      (0.19)      (0.58)     (0.59)    (0.60)    (0.61)     (0.63)
                                                                 ------      ------     ------    ------    ------    -------
Net Asset Value, End of Period..............................     $11.46      $11.33     $10.92    $10.60    $10.53     $10.38
                                                                 ======      ======     ======    ======    ======    =======
Total Return(2).............................................      2.82%       9.26%      8.83%     6.40%     7.57%    (2.19)%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................   $287,590      $290,328   $318,251  $372,177  $405,967  $509,223
  Ratio of Operating Expenses to Average Net Assets(3)......      0.97%(5)    1.00%      0.97%     0.94%     0.85%      0.79%
  Ratio of Net Investment Income to Average Net Assets......      4.87%(5)    5.18%      5.51%     5.56%     5.89%      5.45%
  Portfolio Turnover Rate...................................        28%         87%        36%       17%       22%        50%
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credits Allowed by
   the Custodian............................................      1.05%(5)    1.19%(10)  1.26%(10)  1.29%(10)  1.29%    1.39%
</TABLE>
    
 
  CALIFORNIA MUNICIPAL FUND   CLASS B SHARES
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL
                                                              PERIOD ENDED           YEAR ENDED JUNE 30,
                                                              OCTOBER 31,    -----------------------------------
                                                                1998(1)      1998(6)    1997     1996    1995(7)
                                                              --------------------------------------------------
<S>                                                           <C>            <C>       <C>      <C>      <C>
Net Asset Value, Beginning of Period........................     $11.33      $10.92    $10.60   $10.53   $10.38
                                                                 ------      ------    ------   ------   ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investments Income....................................       0.16(9)     0.50(9)   0.51     0.51(9)   0.53
  Net Realized & Unrealized Gain on Investments.............       0.13        0.41      0.32     0.07     0.15
                                                                 ------      ------    ------   ------   ------
    Total From Investment Operations........................       0.29        0.91      0.83     0.58     0.68
                                                                 ------      ------    ------   ------   ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................      (0.16)      (0.50)    (0.51)   (0.51)   (0.53)
  Distributions in Excess of Net Investment Income..........          -           -         -        -        -
  Distributions from Net Realized Gains.....................          -           -         -        -    (0.00)(8)
  Distributions in Excess of Net Realized Gains.............          -           -         -        -        -
  Distributions from Capital................................          -           -         -        -        -
                                                                 ------      ------    ------   ------   ------
    Total Distributions.....................................      (0.16)      (0.50)    (0.51)   (0.51)   (0.53)
                                                                 ------      ------    ------   ------   ------
Net Asset Value, End of Period..............................     $11.46      $11.33    $10.92   $10.60   $10.53
                                                                 ======      ======    ======   ======   ======
Total Return(2).............................................      2.56%       8.45%     8.02%    5.61%    6.78%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................    $49,683      $34,537   $25,219  $20,543  $7,230
  Ratio of Operating Expenses to Average Net Assets(3)......      1.72%(5)    1.75%     1.72%    1.69%    1.60%
  Ratio of Net Investment Income to Average Net Assets......      4.12%(5)    4.42%     4.76%    4.81%    5.14%
  Portfolio Turnover Rate...................................        28%         87%       36%      17%      22%
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credits Allowed by
   the Custodian............................................      1.81%(5)    1.95%(10)  2.01%(10)  2.04%(10)  2.04%
</TABLE>
    
 
   
Footnotes appear on page 84
    
                                       72
<PAGE>   75
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  CALIFORNIA INSURED INTERMEDIATE MUNICIPAL FUND   CLASS A SHARES
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL                                                APRIL 4,
                                                              PERIOD ENDED            YEAR ENDED JUNE 30,               1994 TO
                                                              OCTOBER 31,    --------------------------------------    JUNE 30,
                                                                1998(1)      1998(6)     1997      1996       1995      1994(4)
                                                              -------------------------------------------------------------------
<S>                                                           <C>            <C>        <C>       <C>        <C>      <C>
Net Asset Value, Beginning of Period........................     $10.81      $10.74     $10.56     $10.45    $10.10     $10.00
                                                                 ------      ------     ------    -------    ------     ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investments Income....................................       0.16        0.49       0.49(9)    0.49      0.50       0.11
  Net Realized & Unrealized Gain on Investments.............       0.21        0.17       0.23       0.15      0.35       0.11(12)
                                                                 ------      ------     ------    -------    ------     ------
    Total From Investment Operations........................       0.37        0.66       0.72       0.64      0.85       0.22
                                                                 ------      ------     ------    -------    ------     ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................      (0.16)      (0.49)     (0.49)     (0.49)    (0.50)     (0.11)
  Distributions in Excess of Net Investment Income..........          -       (0.00)(8)      -          -         -          -
  Distributions from Net Realized Gains.....................          -       (0.10)     (0.05)     (0.04)        -      (0.01)
  Distributions in Excess of Net Realized Gains.............          -           -          -          -         -          -
  Distributions from Capital................................          -           -          -          -         -          -
                                                                 ------      ------     ------    -------    ------     ------
    Total Distributions.....................................      (0.16)      (0.59)     (0.54)     (0.53)    (0.50)     (0.12)
                                                                 ------      ------     ------    -------    ------     ------
Net Asset Value, End of Period..............................     $11.02      $10.81     $10.74     $10.56    $10.45     $10.10
                                                                 ======      ======     ======    =======    ======     ======
Total Return(2).............................................      3.46%       6.26%      6.97%      6.25%     8.71%      2.20%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................    $37,529      $38,724    $45,157   $54,518(10) $54,507  $34,147
  Ratio of Operating Expenses to Average Net Assets(3)......      0.82%(5)    0.86%      0.82%      0.73%     0.42%      0.00%(5)
  Ratio of Net Investment Income to Average Net Assets......      4.39%(5)    4.49%      4.61%      4.62%     4.95%      4.25%(5)
  Portfolio Turnover Rate...................................         7%         25%        29%        27%       13%        17%
  Ratio of Operating Expenses to Average Net Assets Without
   Credits Allowed by the Custodian.........................          -       0.86%(10)  0.83%(10)   0.75%(10)    N/A      N/A
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credits Allowed by
   the Custodian............................................      1.15%(5)    1.25%(10)  1.31%(10)   1.39%(10)  1.41%    1.95%(5)
</TABLE>
    
 
  CALIFORNIA INSURED INTERMEDIATE MUNICIPAL FUND   CLASS B SHARES
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL
                                                              PERIOD ENDED            YEAR ENDED JUNE 30,
                                                              OCTOBER 31,    --------------------------------------
                                                                1998(1)      1998(6)     1997      1996     1995(7)
                                                              -----------------------------------------------------
<S>                                                           <C>            <C>        <C>       <C>       <C>
Net Asset Value, Beginning of Period........................     $10.81      $10.74     $10.56    $10.45    $10.10
                                                                 ------      ------     ------    ------    ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investments Income....................................       0.13        0.41       0.41(9)   0.41      0.43
  Net Realized & Unrealized Gain on Investments.............       0.21        0.17       0.23      0.15      0.35
                                                                 ------      ------     ------    ------    ------
    Total From Investment Operations........................       0.34        0.58       0.64      0.56      0.78
                                                                 ------      ------     ------    ------    ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................      (0.13)      (0.41)     (0.41)    (0.41)    (0.43)
  Distributions in Excess of Net Investment Income..........          -       (0.00)(8)      -         -         -
  Distributions from Net Realized Gains.....................          -       (0.10)     (0.05)    (0.04)        -
  Distributions in Excess of Net Realized Gains.............          -           -          -         -         -
  Distributions from Capital................................          -           -          -         -         -
                                                                 ------      ------     ------    ------    ------
    Total Distributions.....................................      (0.13)      (0.51)     (0.46)    (0.45)    (0.43)
                                                                 ------      ------     ------    ------    ------
Net Asset Value, End of Period..............................     $11.02      $10.81     $10.74    $10.56    $10.45
                                                                 ======      ======     ======    ======    ======
Total Return(2).............................................      3.20%       5.47%      6.17%     5.46%     7.90%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................    $23,960      $21,688    $20,992   $20,948   $12,391
  Ratio of Operating Expenses to Average Net Assets(3)......      1.57%(5)    1.61%      1.57%     1.48%     1.17%
  Ratio of Net Investment Income to Average Net Assets......      3.64%(5)    3.74%      3.86%     3.87%     4.20%
  Portfolio Turnover Rate...................................         7%         25%        29%       27%       13%
  Ratio of Operating Expenses to Average Net Assets Without
   Credits Allowed by the Custodian.........................          -       1.61%(10)  1.58%(10)  1.50%(10)    N/A
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credits Allowed by
   the Custodian............................................      1.90%(5)    2.01%(10)  2.06%(10)  2.14%(10)  2.16%
</TABLE>
    
 
   
Footnotes appear on page 84
    
                                       73
<PAGE>   76
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  FLORIDA INSURED MUNICIPAL FUND   CLASS A SHARES
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL
                                                              PERIOD ENDED                 YEAR ENDED JUNE 30,
                                                              OCTOBER 31,    ------------------------------------------------
                                                                1998(1)      1998(6)     1997      1996      1995       1994
                                                              ---------------------------------------------------------------
<S>                                                           <C>            <C>         <C>       <C>       <C>       <C>
Net Asset Value, Beginning of Period........................     $10.35       $9.93      $9.64     $9.43     $9.40     $10.05
                                                                 ------      ------      -----     -----     -----     ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income.....................................       0.17        0.49       0.49(9)   0.50      0.52       0.52
  Net Realized & Unrealized Gain/(Loss) on Investments......       0.15        0.42       0.30      0.21      0.03(12)  (0.65)
                                                                 ------      ------      -----     -----     -----     ------
    Total From Investment Operations........................       0.32        0.91       0.79      0.71      0.55      (0.13)
                                                                 ------      ------      -----     -----     -----     ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................      (0.17)      (0.49)     (0.50)    (0.50)    (0.52)     (0.52)
  Distributions in Excess of Net Investment Income..........          -           -      (0.00)(8)     -         -      (0.00)(8)
  Distributions from Net Realized Gains.....................          -           -          -         -         -          -
  Distributions in Excess of Net Realized Gains.............          -           -          -         -         -      (0.00)(8)
  Distributions from Capital................................          -           -          -         -         -          -
                                                                 ------      ------      -----     -----     -----     ------
    Total Distributions.....................................      (0.17)      (0.49)     (0.50)    (0.50)    (0.52)     (0.52)
                                                                 ------      ------      -----     -----     -----     ------
Net Asset Value, End of Period..............................     $10.50      $10.35      $9.93     $9.64     $9.43      $9.40
                                                                 ======      ======      =====     =====     =====     ======
Total Return(2).............................................      3.08%       9.34%      8.43%     7.56%     6.01%     (1.50%)
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................    $15,813      $16,538     $22,761   $29,821   $33,714   $38,541
  Ratio of Operating Expenses to Average Net Assets(3)......      0.82%(5)    0.88%      0.82%     0.63%     0.39%      0.00%
  Ratio of Net Investment Income to Average Net Assets......      4.76%(5)    4.79%      5.01%     5.08%     5.53%      5.09%
  Portfolio Turnover Rate...................................        40%         51%        53%       52%       44%        83%
  Net Investment Income Per Share Without Fee Waivers,
   Expenses Absorbed and/or Credits Allowed by the
   Custodian................................................          -           -(10)   0.43(9)(10)  0.42(10)  0.42    0.36
  Ratio of Operating Expenses to Average Net Assets Without
   Credit Allowed by the Custodian..........................          -       0.89%(10)  0.84%(10) 0.66%(10)   N/A        N/A
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credit Allowed by
   the Custodian............................................      1.40%(5)    1.45%(10)  1.46%(10) 1.46%(10) 1.51%      1.55%
</TABLE>
    
 
  FLORIDA INSURED MUNICIPAL FUND   CLASS B SHARES
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL
                                                              PERIOD ENDED              YEAR ENDED JUNE 30,
                                                              OCTOBER 31,      --------------------------------------
                                                                1998(1)        1998(6)     1997      1996     1995(7)
                                                              -------------------------------------------------------
<S>                                                           <C>              <C>         <C>       <C>      <C>
Net Asset Value, Beginning of Period........................     $10.35         $9.93      $9.64     $9.43     $9.40
                                                                 ------        ------      -----     -----     -----
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income.....................................       0.14          0.41       0.42(9)   0.42      0.45
  Net Realized & Unrealized Gain on Investments.............       0.15          0.43       0.30      0.21      0.03(12)
                                                                 ------        ------      -----     -----     -----
    Total From Investment Operations........................       0.29          0.84       0.72      0.63      0.48
                                                                 ------        ------      -----     -----     -----
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................      (0.14)        (0.42)     (0.43)    (0.42)    (0.45)
  Distributions in Excess of Net Investment Income..........          -             -      (0.00)(8)     -         -
  Distributions from Net Realized Gains.....................          -             -          -         -         -
  Distributions in Excess of Net Realized Gains.............          -             -          -         -         -
  Distributions from Capital................................          -             -          -         -         -
                                                                 ------        ------      -----     -----     -----
    Total Distributions.....................................      (0.14)        (0.42)     (0.43)    (0.42)    (0.45)
                                                                 ------        ------      -----     -----     -----
Net Asset Value, End of Period..............................     $10.50        $10.35      $9.93     $9.64     $9.43
                                                                 ======        ======      =====     =====     =====
Total Return(2).............................................      2.82%         8.53%      7.63%     6.76%     5.23%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................     $6,054        $5,075      $5,067    $5,428   $3,330
  Ratio of Operating Expenses to Average Net Assets(3)......      1.57%(5)      1.63%      1.57%     1.38%     1.14%
  Ratio of Net Investment Income to Average Net Assets......      4.01%(5)      4.04%      4.26%     4.33%     4.78%
  Portfolio Turnover Rate...................................        40%           51%        53%       52%       44%
  Ratio of Operating Expenses to Average Net Assets Without
   Credit Allowed by the Custodian..........................          -         1.64%(10)  1.59%(10) 1.41%(10)    N/A
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credit Allowed by
   the Custodian............................................      2.15%(5)      2.21%(10)  2.21%(10) 2.21%(10)  2.26%
</TABLE>
    
 
   
Footnotes appear on page 84
    
                                       74
<PAGE>   77
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
   
  BOND & STOCK FUND    CLASS A SHARES(22)
    
 
   
<TABLE>
<CAPTION>
                                                                FISCAL
                                                             PERIOD ENDED        YEAR ENDED OCTOBER 31,
                                                             OCTOBER 31,    ---------------------------------
                                                                 1998        1997     1996     1995     1994
                                                             ------------------------------------------------
<S>                                                          <C>            <C>      <C>      <C>      <C>
Net Asset Value, Beginning of Period........................    16.13%      $14.71   $13.48   $11.53   $12.23
                                                                ------      ------   ------   ------   ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income.....................................      0.45(9)     0.50     0.52     0.50     0.46
  Net Realized & Unrealized Gain/(Loss) on Investments......      0.21(12)    2.37     1.53     2.02    (0.57)
                                                                ------      ------   ------   ------   ------
    Total From Investment Operations........................      0.66        2.87     2.05     2.52    (0.11)
                                                                ------      ------   ------   ------   ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................     (0.45)      (0.51)   (0.50)   (0.49)   (0.44)
  Distributions from Capital Gains..........................     (2.32)      (0.94)   (0.32)   (0.08)   (0.15)
                                                                ------      ------   ------   ------   ------
    Total Distributions.....................................     (2.77)      (1.45)   (0.82)   (0.57)   (0.59)
                                                                ------      ------   ------   ------   ------
Net Asset Value, End of Period..............................    $14.02      $16.13   $14.71   $13.48   $11.53
                                                                ======      ======   ======   ======   ======
Total Return(2).............................................     3.12%      20.81%   15.66%   22.55%   (0.90)%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................  $298,651      $307,018 $255,414 $208,592 $191,615
  Ratio of Operating Expenses to Average Net Assets(3)......     0.97%       0.99%    0.98%    1.02%    1.06%
  Ratio of Net Investment Income to Average Net Assets......     3.09%       3.31%    3.68%    3.98%    3.97%
  Portfolio Turnover Rate...................................       80%         54%      46%      32%      25%
</TABLE>
    
 
   
  BOND & STOCK FUND    CLASS B SHARES(22)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL                                  MARCH 30,
                                                              PERIOD ENDED    YEAR ENDED OCTOBER 31,      1994 TO
                                                              OCTOBER 31,    ------------------------   OCTOBER 31,
                                                                  1998        1997     1996     1995     1994(18)
                                                              -----------------------------------------------------
<S>                                                           <C>            <C>      <C>      <C>      <C>
Net Asset Value, Beginning of Period........................     $16.10      $14.69   $13.47   $11.51     $11.49
                                                                 ------      ------   ------   ------     ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income.....................................       0.33(9)     0.39     0.41     0.39       0.18
  Net Realized & Unrealized Gain on Investments.............       0.19(12)    2.36     1.53     2.03       0.04
                                                                 ------      ------   ------   ------     ------
    Total From Investment Operations........................       0.52        2.75     1.94     2.42       0.22
                                                                 ------      ------   ------   ------     ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................      (0.34)      (0.40)   (0.40)   (0.38)     (0.20)
  Distributions from Capital Gains..........................      (2.32)      (0.94)   (0.32)   (0.08)         -
                                                                 ------      ------   ------   ------     ------
    Total Distributions.....................................      (2.66)      (1.34)   (0.72)   (0.46)     (0.20)
                                                                 ------      ------   ------   ------     ------
Net Asset Value, End of Period..............................     $13.96      $16.10   $14.69   $13.47     $11.51
                                                                 ======      ======   ======   ======     ======
Total Return(2).............................................      3.12%      19.86%   14.73%   21.60%      1.94%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................    $74,542      $46,556  $22,243  $7,372     $3,362
  Ratio of Operating Expenses to Average Net Assets(3)......      1.76%       1.79%    1.86%    1.84%      1.77%(5)
  Ratio of Net Investment Income to Average Net Assets......      2.30%       2.48%    2.80%    3.10%      3.22%(5)
  Portfolio Turnover Rate...................................        80%         54%      46%      32%        25%
</TABLE>
    
 
   
Footnotes appear on page 84
    
                                       75
<PAGE>   78
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
   
  GROWTH & INCOME FUND   CLASS A SHARES(23)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL
                                                              PERIOD ENDED        YEAR ENDED OCTOBER 31,
                                                              OCTOBER 31,    ---------------------------------
                                                                  1998        1997     1996     1995     1994
                                                              ------------------------------------------------
<S>                                                           <C>            <C>      <C>      <C>      <C>
Net Asset Value, Beginning of Period........................     $21.01      $17.26   $14.65   $12.71   $12.81
                                                                 ------      ------   ------   ------   ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income.....................................       0.11(9)     0.12     0.20     0.22     0.18
  Net Realized & Unrealized Gain/(Loss) on Investments......       1.43        4.98     3.16     2.31     0.85
                                                                 ------      ------   ------   ------   ------
    Total From Investment Operations........................       1.54        5.10     3.36     2.53     1.03
                                                                 ------      ------   ------   ------   ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................      (0.09)      (0.14)   (0.21)   (0.19)   (0.18)
  Distributions from Capital Gains..........................      (2.47)      (1.21)   (0.54)   (0.40)   (0.95)
                                                                 ------      ------   ------   ------   ------
    Total Distributions.....................................      (2.56)      (1.35)   (0.75)   (0.59)   (1.13)
                                                                 ------      ------   ------   ------   ------
Net Asset Value, End of Period..............................     $19.99      $21.01   $17.26   $14.65   $12.71
                                                                 ======      ======   ======   ======   ======
Total Return(2).............................................      7.38%      31.24%   23.61%   20.87%    8.55%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................   $502,115      $299,928 $178,331 $130,630 $102,837
  Ratio of Operating Expenses to Average Net Assets(3)......      0.94%       1.05%    1.03%    1.07%    1.10%
  Ratio of Net Investment Income to Average Net Assets......      0.52%       0.66%    1.26%    1.62%    1.45%
  Portfolio Turnover Rate...................................        79%         71%      52%      39%      34%
</TABLE>
    
 
   
  GROWTH & INCOME FUND   CLASS B SHARES(23)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL                                   MARCH 30,
                                                              PERIOD ENDED    YEAR ENDED OCTOBER 31,       1994 TO
                                                              OCTOBER 31,    -------------------------   OCTOBER 31,
                                                                  1998        1997      1996     1995     1994(18)
                                                              ------------------------------------------------------
<S>                                                           <C>            <C>       <C>      <C>      <C>
Net Asset Value, Beginning of Period........................     $20.85       $17.17   $14.59   $12.68     $12.00
                                                                -------      -------   ------   ------     ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income/(Loss)..............................      (0.07)(9)    (0.02)    0.06     0.11       0.05
  Net Realized & Unrealized Gain on Investments.............       1.46         4.93     3.14     2.31       0.69
                                                                -------      -------   ------   ------     ------
    Total From Investment Operations........................       1.39         4.91     3.20     2.42       0.74
                                                                -------      -------   ------   ------     ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................      (0.00)(8)    (0.02)   (0.08)   (0.11)     (0.06)
  Distributions from Capital Gains..........................      (2.47)       (1.21)   (0.54)   (0.40)         -
                                                                -------      -------   ------   ------     ------
    Total Distributions.....................................      (2.47)       (1.23)   (0.62)   (0.51)     (0.06)
                                                                -------      -------   ------   ------     ------
Net Asset Value, End of Period..............................     $19.77       $20.85   $17.17   $14.59     $12.68
                                                                =======      =======   ======   ======     ======
Total Return(2).............................................      6.60%       30.20%   22.55%   19.95%      6.14%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................   $117,063      $49,994   $22,851  $8,871     $2,082
  Ratio of Operating Expenses to Average Net Assets(3)......      1.79%        1.88%    1.94%    1.91%      1.85%(5)
  Ratio of Net Investment Income/(Loss) to Average Net
   Assets...................................................       (0.33)%   (0.19)%    0.34%    0.69%      0.65%(5)
  Portfolio Turnover Rate...................................        79%          71%      52%      39%        34%
</TABLE>
    
 
   
Footnotes appear on page 84
    
                                       76
<PAGE>   79
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
   
  NORTHWEST FUND   CLASS A SHARES(24)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL
                                                              PERIOD ENDED         YEAR ENDED OCTOBER 31,
                                                              OCTOBER 31,    ----------------------------------
                                                                  1998        1997      1996     1995     1994
                                                              -------------------------------------------------
<S>                                                           <C>            <C>       <C>      <C>      <C>
Net Asset Value, Beginning of Period........................     $25.92       $19.69   $17.40   $14.30   $14.50
                                                                 ------      -------   ------   ------   ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income/(Loss)..............................      (0.02)(9)    (0.02)    0.03     0.07     0.08
  Net Realized & Unrealized Gain/(Loss) on Investments......      (0.76)        8.13     2.47     3.10     0.35
                                                                 ------      -------   ------   ------   ------
    Total From Investment Operations........................      (0.78)        8.11     2.50     3.17     0.43
                                                                 ------      -------   ------   ------   ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................          -            -    (0.03)   (0.07)   (0.08)
  Distributions from Capital Gains..........................      (4.74)       (1.88)   (0.18)       -    (0.55)
  Distributions from Capital................................      (0.03)           -        -        -        -
                                                                 ------      -------   ------   ------   ------
    Total Distributions.....................................      (4.77)       (1.88)   (0.21)   (0.07)   (0.63)
                                                                 ------      -------   ------   ------   ------
Net Asset Value, End of Period..............................     $20.37       $25.92   $19.69   $17.40   $14.30
                                                                 ======      =======   ======   ======   ======
Total Return(2).............................................      (4.81)%     44.47%   14.54%   22.24%    2.97%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................   $243,126      $256,908  $176,706 $157,953 $152,622
  Ratio of Operating Expenses to Average Net Assets(3)......      1.10%        1.05%    1.08%    1.10%    1.09%
  Ratio of Net Investment Income/(Loss) to Average Net
   Assets...................................................      (0.09)%    (0.08)%    0.16%    0.44%    0.51%
  Portfolio Turnover Rate...................................        39%          37%      42%       9%      11%
  Ratio of operating expenses to average net assets w/o fee
   waivers or fees reduced by credits allowed by the
   custodian................................................      1.10%        1.11%    1.08%    1.10%    1.09%
</TABLE>
    
 
   
  NORTHWEST FUND   CLASS B SHARES(24)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL                                     MARCH 30,
                                                              PERIOD ENDED     YEAR ENDED OCTOBER 31,        1994 TO
                                                              OCTOBER 31,    ---------------------------   OCTOBER 31,
                                                                  1998        1997      1996      1995       1994(18)
                                                              ---------------------------------------------------------
<S>                                                           <C>            <C>       <C>       <C>       <C>
Net Asset Value, Beginning of Period........................     $25.34       $19.45    $17.31    $14.28      $14.42
                                                                -------      -------   -------   -------     -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Loss.......................................      (0.20)(9)    (0.08)    (0.08)    (0.05)      (0.02)
  Net Realized & Unrealized Gain/(Loss) on Investments......      (0.73)        7.85      2.40      3.08       (0.12)
                                                                -------      -------   -------   -------     -------
    Total From Investment Operations........................      (0.93)        7.77      2.32      3.03       (0.14)
                                                                -------      -------   -------   -------     -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................          -            -         -         -           -
  Distributions from Capital Gains..........................      (4.74)       (1.88)    (0.18)        -           -
  Distributions from Capital................................      (0.03)           -         -         -           -
                                                                -------      -------   -------   -------     -------
    Total Distributions.....................................      (4.77)       (1.88)    (0.18)        -           -
                                                                -------      -------   -------   -------     -------
Net Asset Value, End of Period..............................     $19.64       $25.34    $19.45    $17.31      $14.28
                                                                =======      =======   =======   =======     =======
Total Return(2).............................................      (5.63)%      43.17     13.54     21.25       (0.97)
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................    $47,106      $39,627   $14,653    $7,083      $3,012
  Ratio of Operating Expenses to Average Net Assets(3)......      1.95%        1.91%     1.98%     1.95%       1.96%(5)
  Ratio of Net Investment Loss to Average Net Assets........      (0.94)%    (0.94)%   (0.76)%   (0.45)%          (0.39)%(5)
  Portfolio Turnover Rate...................................        39%          37%       42%        9%         11%
  Ratio of operating expenses to average net assets w/o fee
   waivers or fees reduced by credits allowed by the
   custodian................................................      1.95%        1.97%     1.98%     1.95%       1.96%(5)
</TABLE>
    
 
   
Footnotes appear on page 84
    
                                       77
<PAGE>   80
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  GROWTH FUND   CLASS A SHARES
 
   
<TABLE>
<CAPTION>
                                                       FISCAL
                                                    PERIOD ENDED                     YEAR ENDED JUNE 30,
                                                    OCTOBER 31,      ---------------------------------------------------
                                                      1998(1)        1998(6)      1997       1996       1995       1994
                                                    --------------------------------------------------------------------
<S>                                                 <C>              <C>         <C>        <C>        <C>        <C>
Net Asset Value, Beginning of Period..............     $18.46        $14.90      $15.69     $14.18     $10.73     $10.72
                                                       ------        ------      ------     ------     ------     ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income/(Loss)....................      (0.07)(9)     (0.15)(9)   (0.03)(9)  (0.07)(9)   0.05(9)   (0.02)
  Net Realized & Unrealized Gain/(Loss) on
   Investments....................................      (0.75)         4.99        1.58       3.47       3.42       0.03(12)
                                                       ------        ------      ------     ------     ------     ------
    Total From Investment Operations..............      (0.82)         4.84        1.55       3.40       3.47       0.01
                                                       ------        ------      ------     ------     ------     ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income............          -             -           -          -      (0.02)         -
  Distributions in Excess of Net Investment
   Income.........................................          -             -           -          -          -          -
  Distributions from Net Realized Gains...........          -         (1.28)      (2.34)     (1.89)     (0.00)(8)      -
  Distributions in Excess of Net Realized Gains...          -             -           -          -          -          -
  Distributions from Capital......................          -             -           -          -          -          -
                                                       ------        ------      ------     ------     ------     ------
    Total Distributions...........................          -         (1.28)      (2.34)     (1.89)     (0.02)         -
                                                       ------        ------      ------     ------     ------     ------
Net Asset Value, End of Period....................     $17.64        $18.46      $14.90     $15.69     $14.18     $10.73
                                                       ======        ======      ======     ======     ======     ======
Total Return(2)...................................      (4.44)%      35.43%      10.88%     25.44%     32.33%      0.00%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)............   $104,775        $112,153    $111,187   $179,720   $154,763   $126,808
  Ratio of Operating Expenses to Average Net
   Assets(3)......................................      1.69%(5)      1.66%       1.70%      1.70%      1.76%      1.75%
  Ratio of Net Investment Income to Average Net
   Assets.........................................      (1.21)%(5)    (0.91)%     (0.22)%    (0.49)%    0.28%     -0.35%
  Portfolio Turnover Rate.........................        24%          153%        156%       205%       233%       227%
  Ratio of Operating Expenses to Average Net
   Assets Without Credits Allowed by the
   Custodian......................................          -         1.66%(10)   1.70%(10)  1.71%(10)    N/A        N/A
  Ratio of Operating Expenses to Average Net
   Assets Without Fee Waivers, Expenses Absorbed
   and/or Credits Allowed by the Custodian........          -         1.66%(10)   1.70%(10)  1.71%(10)  1.76%      1.75%
</TABLE>
    
 
  GROWTH FUND   CLASS B SHARES
 
   
<TABLE>
<CAPTION>
                                                                  FISCAL
                                                               PERIOD ENDED                YEAR ENDED JUNE 30,
                                                               OCTOBER 31,      -----------------------------------------
                                                                 1998(1)        1998(6)      1997       1996      1995(7)
                                                               ----------------------------------------------------------
<S>                                                            <C>              <C>         <C>        <C>        <C>
Net Asset Value, Beginning of Period........................      $17.82        $14.53      $15.47     $14.10     $10.73
                                                                  ------        ------      ------     ------     ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Loss.......................................       (0.12)(9)     (0.25)(9)   (0.14)(9)  (0.19)(9)  (0.04)(9)
  Net Realized & Unrealized Gain on Investments.............       (0.71)         4.82        1.54       3.45       3.42
                                                                  ------        ------      ------     ------     ------
    Total From Investment Operations........................       (0.83)         4.57        1.40       3.26       3.38
                                                                  ------        ------      ------     ------     ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................           -             -           -          -      (0.01)
  Distributions in Excess of Net Investment Income..........           -             -           -          -          -
  Distributions from Net Realized Gains.....................           -         (1.28)      (2.34)     (1.89)     (0.00)(8)
  Distributions in Excess of Net Realized Gains.............           -             -           -          -          -
  Distributions from Capital................................           -             -           -          -          -
                                                                  ------        ------      ------     ------     ------
    Total Distributions.....................................           -         (1.28)      (2.34)     (1.89)     (0.01)
                                                                  ------        ------      ------     ------     ------
Net Asset Value, End of Period..............................      $16.99        $17.82      $14.53     $15.47     $14.10
                                                                  ======        ======      ======     ======     ======
Total Return(2).............................................       (4.66)%      34.43%       9.99%     24.54%     31.46%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................     $39,379        $38,390     $30,397    $25,067    $6,928
  Ratio of Operating Expenses to Average Net Assets(3)......       2.54%(5)      2.46%       2.45%      2.45%      2.51%
  Ratio of Net Investment Loss to Average Net Assets........       (2.06)%(5)    (1.70)%     (0.97)%    (1.24)%    (0.47)%
  Portfolio Turnover Rate...................................         24%          153%        156%       205%       233%
  Ratio of Operating Expenses to Average Net Assets Without
   Credits Allowed by the Custodian.........................           -         2.46%(10)   2.45%(10)  2.46%(10)    N/A
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credits Allowed by
   the Custodian............................................           -         2.46%(10)   2.45%(10)  2.46%(10)  2.51%
</TABLE>
    
 
   
Footnotes appear on page 84
    
                                       78
<PAGE>   81
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  EMERGING GROWTH FUND    CLASS A SHARES
 
   
<TABLE>
<CAPTION>
                                            FISCAL
                                         PERIOD ENDED
                                         OCTOBER 31,
                                           1998(1)
                                         ----------------
<S>                                      <C>
Net Asset Value, Beginning of Period...      $19.49
                                           --------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Loss..................       (0.08)(9)
  Net Realized & Unrealized Gain/(Loss)
   on Investments......................       (3.16)
                                           --------
    Total From Investment Operations...       (3.24)
                                           --------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment
   Income..............................           -
  Distributions in Excess of Net
   Investment Income...................           -
  Distributions from Net Realized
   Gains...............................           -
  Distributions in Excess of Net
   Realized Gains......................           -
  Distributions from Capital...........           -
                                           --------
    Total Distributions................           -
                                           --------
Net Asset Value, End of Period.........      $16.25
                                           ========
Total Return(2)........................      (16.62)%
 RATIOS/SUPPLEMENTAL DATA:
    
   
  Net Assets, End of Period
   ($1,000's)..........................     $88,502
  Ratio of Operating Expenses to
   Average Net Assets(3)...............       1.88%(5)
  Ratio of Net Investment Loss to
   Average Net Assets..................  (1.43)%(5)
  Portfolio Turnover Rate..............         20%
  Ratio of Operating Expenses to
   Average Net Assets Without Fee
   Waivers, Expenses Absorbed and/or
   Credits Allowed by the Custodian....       1.89%(5)
 
<CAPTION>
 
                                                                 YEAR ENDED JUNE 30,
                                         --------------------------------------------------------------------
                                         1998(6)         1997           1996           1995            1994
                                         --------------------------------------------------------------------
<S>                                      <C>            <C>            <C>            <C>             <C>
Net Asset Value, Beginning of Period...   $18.28         $20.17         $15.47         $13.02          $13.76
                                         -------        -------        -------        -------         -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Loss..................    (0.22)(9)      (0.21)(9)      (0.19)(9)      (0.00)(8)(9)    (0.09)
  Net Realized & Unrealized Gain/(Loss)
   on Investments......................     2.50          (0.18)          5.65           2.77            0.68
                                         -------        -------        -------        -------         -------
    Total From Investment Operations...     2.28          (0.39)          5.46           2.77            0.59
                                         -------        -------        -------        -------         -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment
   Income..............................        -              -              -              -               -
  Distributions in Excess of Net
   Investment Income...................        -              -              -              -               -
  Distributions from Net Realized
   Gains...............................    (1.07)         (1.50)         (0.76)         (0.32)          (1.33)
  Distributions in Excess of Net
   Realized Gains......................        -              -              -              -               -
  Distributions from Capital...........        -              -              -              -               -
                                         -------        -------        -------        -------         -------
    Total Distributions................    (1.07)         (1.50)         (0.76)         (0.32)          (1.33)
                                         -------        -------        -------        -------         -------
Net Asset Value, End of Period.........   $19.49         $18.28         $20.17         $15.47          $13.02
                                         =======        =======        =======        =======         =======
Total Return(2)........................   12.95%        (1.50)%         35.93%         21.54%           3.40%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period
   ($1,000's)..........................  $118,473       $165,719       $283,747       $185,722        $124,941
  Ratio of Operating Expenses to
   Average Net Assets(3)...............    1.66%          1.64%          1.64%          1.68%           1.66%
  Ratio of Net Investment Loss to
   Average Net Assets..................  (1.10)%        (1.17)%        (1.02)%        (0.31)%         (0.68)%
  Portfolio Turnover Rate..............     112%            81%           131%           181%            224%
  Ratio of Operating Expenses to
   Average Net Assets Without Fee
   Waivers, Expenses Absorbed and/or
   Credits Allowed by the Custodian....    1.66%(10)      1.64%(10)      1.65%(10)        N/A             N/A
</TABLE>
    
 
  EMERGING GROWTH FUND    CLASS B SHARES
 
   
<TABLE>
<CAPTION>
                                                           FISCAL
                                                        PERIOD ENDED
                                                        OCTOBER 31,
                                                          1998(1)
                                                        ----------------
<S>                                                     <C>
Net Asset Value, Beginning of Period..................      $18.86
                                                          --------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income/(Loss)........................       (0.13)(9)
  Net Realized & Unrealized Gain/(Loss) on
   Investments........................................       (3.06)
                                                          --------
    Total From Investment Operations..................       (3.19)
                                                          --------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income................           -
  Distributions in Excess of Net Investment Income....           -
  Distributions from Net Realized Gains...............           -
  Distributions in Excess of Net Realized Gains.......           -
  Distributions from Capital..........................           -
                                                          --------
    Total Distributions...............................           -
                                                          --------
Net Asset Value, End of Period........................      $15.67
                                                          ========
Total Return(2).......................................      (16.87)%
 RATIOS/SUPPLEMENTAL DATA:
    
   
  Net Assets, End of Period ($1,000's)................     $22,172
  Ratio of Operating Expenses to Average Net
   Assets(3)..........................................       2.84%(5)
  Ratio of Net Investment Income/Loss to Average Net
   Assets.............................................       (2.39)%(5)
  Portfolio Turnover Rate.............................         20%
  Ratio of Operating Expenses to Average Net Assets
   Without Fee Waivers,
   Expenses Absorbed and/or Credits Allowed by the
   Custodian..........................................       2.85%(5)
 
<CAPTION>
 
                                                                         YEAR ENDED JUNE 30,
                                                        -----------------------------------------------------
                                                        1998(6)         1997           1996           1995(7)
                                                        -----------------------------------------------------
<S>                                                     <C>            <C>            <C>             <C>
Net Asset Value, Beginning of Period..................   $17.85         $19.88         $15.37          $13.02
                                                        -------        -------        -------         -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income/(Loss)........................    (0.36)(9)      (0.34)(9)      (0.32)(9)       (0.10)(9)
  Net Realized & Unrealized Gain/(Loss) on
   Investments........................................     2.44          (0.19)          5.59            2.77
                                                        -------        -------        -------         -------
    Total From Investment Operations..................     2.08          (0.53)          5.27            2.67
                                                        -------        -------        -------         -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income................        -              -              -               -
  Distributions in Excess of Net Investment Income....        -              -              -               -
  Distributions from Net Realized Gains...............    (1.07)         (1.50)         (0.76)          (0.32)
  Distributions in Excess of Net Realized Gains.......        -              -              -               -
  Distributions from Capital..........................        -              -              -               -
                                                        -------        -------        -------         -------
    Total Distributions...............................    (1.07)         (1.50)         (0.76)          (0.32)
                                                        -------        -------        -------         -------
Net Asset Value, End of Period........................   $18.86         $17.85         $19.88          $15.37
                                                        =======        =======        =======         =======
Total Return(2).......................................   12.05%        (2.26)%         34.93%          20.69%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)................  $28,540        $29,123        $28,920         $10,208
  Ratio of Operating Expenses to Average Net
   Assets(3)..........................................    2.47%          2.39%          2.39%           2.43%
  Ratio of Net Investment Income/Loss to Average Net
   Assets.............................................  (1.92)%        (1.92)%        (1.77)%         (1.06)%
  Portfolio Turnover Rate.............................     112%            81%           131%            181%
  Ratio of Operating Expenses to Average Net Assets
   Without Fee Waivers,
   Expenses Absorbed and/or Credits Allowed by the
   Custodian..........................................    2.47%(10)      2.39%(10)      2.40%(10)         N/A
</TABLE>
    
 
   
Footnotes appear on page 84
    
                                       79
<PAGE>   82
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  INTERNATIONAL GROWTH FUND   CLASS A SHARES
   
<TABLE>
<CAPTION>
                                                            FISCAL
                                                         PERIOD ENDED
                                                         OCTOBER 31,
                                                           1998(1)
                                                         ----------------
<S>                                                      <C>
Net Asset Value, Beginning of Period..................       $10.20
                                                          ---------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income/(Loss)........................        (0.02)(9)
  Net Realized & Unrealized Gain/(Loss) on
   Investments........................................        (1.32)
                                                          ---------
    Total From Investment Operations..................        (1.34)
                                                          ---------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income................            -
  Distributions in Excess of Net Investment Income....            -
  Distributions from Net Realized Gains...............            -
  Distributions in Excess of Net Realized Gains.......            -
                                                          ---------
    Total Distributions...............................            -
                                                          ---------
Net Asset Value, End of Period........................        $8.86
                                                          =========
Total Return(2).......................................       (13.14)%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)................      $30,117
  Ratio of Operating Expenses to Average Net
   Assets(3)..........................................        1.86%(5)
  Ratio of Net Investment Income/(Loss) to Average Net
   Assets.............................................   (0.50)%(5)
  Portfolio Turnover Rate.............................          41%
  Ratio of Operating Expenses to Average Net Assets
   Without Fee Waivers, Expenses Absorbed and/or
   Credits Allowed by the Custodian...................        1.86%(5)
 
<CAPTION>
 
                                                                        YEAR ENDED JUNE 30,
                                                        ----------------------------------------------------
                                                        1998(6)      1997       1996       1995       1994
                                                        ----------------------------------------------------
<S>                                                     <C>        <C>         <C>        <C>        <C>
Net Asset Value, Beginning of Period..................   $11.85      $10.49      $9.78     $10.74      $9.80
                                                        -------    --------    -------    -------    -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income/(Loss)........................     0.05(9)     0.04(9)    0.05(9)   (0.11)(9)    0.06
  Net Realized & Unrealized Gain/(Loss) on
   Investments........................................    (0.67)       1.55       1.21      (0.31)      1.15
                                                        -------    --------    -------    -------    -------
    Total From Investment Operations..................    (0.62)       1.59       1.26      (0.42)      1.21
                                                        -------    --------    -------    -------    -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income................    (0.50)      (0.13)     (0.05)     (0.04)     (0.02)
  Distributions in Excess of Net Investment Income....    (0.03)          -      (0.04)         -          -
  Distributions from Net Realized Gains...............    (0.50)      (0.10)     (0.46)     (0.44)     (0.25)
  Distributions in Excess of Net Realized Gains.......        -           -          -      (0.06)         -
                                                        -------    --------    -------    -------    -------
    Total Distributions...............................    (1.03)      (0.23)     (0.55)     (0.54)     (0.27)
                                                        -------    --------    -------    -------    -------
Net Asset Value, End of Period........................   $10.20      $11.85     $10.49      $9.78     $10.74
                                                        =======    ========    =======    =======    =======
Total Return(2).......................................  (4.19)%      15.50%     13.16%    (4.01)%     12.39%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)................  $38,281     $57,776    $116,254   $91,763    $127,764
  Ratio of Operating Expenses to Average Net
   Assets(3)..........................................    1.67%       1.65%      1.77%      1.69%      1.69%
  Ratio of Net Investment Income/(Loss) to Average Net
   Assets.............................................    0.50%       0.35%      0.46%      0.62%      0.54%
  Portfolio Turnover Rate.............................     118%         67%       125%        81%        44%
  Ratio of Operating Expenses to Average Net Assets
   Without Fee Waivers, Expenses Absorbed and/or
   Credits Allowed by the Custodian...................    1.67%(10)    1.65%(10)   1.77%(10)     N/A     N/A
</TABLE>
    
 
  INTERNATIONAL GROWTH FUND   CLASS B SHARES
 
   
<TABLE>
<CAPTION>
                                                                   FISCAL
                                                                PERIOD ENDED              YEAR ENDED JUNE 30,
                                                                OCTOBER 31,     ----------------------------------------
                                                                  1998(1)       1998(6)     1997       1996      1995(7)
                                                                --------------------------------------------------------
<S>                                                             <C>             <C>        <C>        <C>        <C>
Net Asset Value, Beginning of Period........................        $10.07       $11.70     $10.39      $9.73     $10.74
                                                                 ---------      -------    -------    -------    -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Loss.......................................         (0.05)(9)    (0.04)(9)   (0.04)(9)   (0.03)(9)   (0.17)(9)
  Net Realized & Unrealized Gain/(Loss) on Investments......         (1.30)       (0.64)      1.53       1.21      (0.31)
                                                                 ---------      -------    -------    -------    -------
    Total From Investment Operations........................         (1.35)       (0.68)      1.49       1.18      (0.48)
                                                                 ---------      -------    -------    -------    -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................             -        (0.42)     (0.08)     (0.02)     (0.03)
  Distributions in Excess of Net Investment Income..........             -        (0.03)         -      (0.04)         -
  Distributions from Net Realized Gains.....................             -        (0.50)     (0.10)     (0.46)     (0.44)
  Distributions in Excess of Net Realized Gains.............             -            -          -          -      (0.06)
                                                                 ---------      -------    -------    -------    -------
    Total Distributions.....................................             -        (0.95)     (0.18)     (0.52)     (0.53)
                                                                 ---------      -------    -------    -------    -------
Net Asset Value, End of Period..............................         $8.72       $10.07     $11.70     $10.39      $9.73
                                                                 =========      =======    =======    =======    =======
Total Return(2).............................................        (13.41)%    (4.95)%     14.66%     12.34%    (4.61)%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................        $3,552       $4,294     $4,876     $4,447     $2,268
  Ratio of Operating Expenses to Average Net Assets(3)......         2.97%(5)     2.49%      2.40%      2.52%      2.44%
  Ratio of Net Investment Loss to Average Net Assets........    (1.61)%(5)      (0.35)%    (0.40)%    (0.29)%    (0.13)%
  Portfolio Turnover Rate...................................           41%         118%        67%       125%        81%
  Net Investment Income (Loss) Per Share Without Fee
   Waivers, Expenses Absorbed and/or Credits Allowed by the
   Custodian................................................             -           $-(8)(9)  $(0.04)(8)(9)  $(0.03)(9)(10)     N/A
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credits Allowed by
   the Custodian............................................             -        2.53%(10)   2.40%(10)   2.52%(10)   2.44%
</TABLE>
    
 
   
Footnotes appear on page 84
    
                                       80
<PAGE>   83
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  STRATEGIC GROWTH PORTFOLIO
   
<TABLE>
<CAPTION>
 
                                                      CLASS A
                                                  ----------------
                                                     FISCAL
                                                  PERIOD ENDED
                                                  OCTOBER 31,
                                                    1998(1)
                                                  ----------------
<S>                                               <C>
Net Asset Value, Beginning of Period...........       $12.66
                                                   ---------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income/(Loss).................        (0.02)(9)
  Net Realized & Unrealized Gain on
   Investments.................................        (0.97)
                                                   ---------
    Total From Investment Operations...........        (0.99)
                                                   ---------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income.........            -
  Distributions in Excess of Net Investment
   Income......................................            -
  Distributions from Net Realized Gains........            -
                                                   ---------
    Total Distributions........................            -
                                                   ---------
Net Asset Value, End of Period.................       $11.67
                                                   =========
Total Return(2)................................      (7.82)%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's).........      $19,690
  Ratio of Operating Expenses to Average Net
   Assets(3)...................................        0.95%(5)
  Ratio of Net Investment Income/(Loss) to
   Average Net Assets..........................      (0.53)%(5)
  Portfolio Turnover Rate......................          10%
  Ratio of Operating Expenses to Average Net
   Assets Without Credits Allowed by the
   Custodian(13)...............................            -
  Ratio of Operating Expenses to Average Net
   Assets Without Fee Waivers, Expenses
   Absorbed and/or Credits Allowed by the
   Custodian...................................        1.13%(5)
 
<CAPTION>
                                                                                       CLASS B
                                                       CLASS A           -----------------------------------
                                                 --------------------      FISCAL
                                                   YEAR      JULY 25,      PERIOD         YEAR      JULY 25,
                                                  ENDED      1996 TO        ENDED        ENDED      1996 TO
                                                 JUNE 30,    JUNE 30,    OCTOBER 31,    JUNE 30,    JUNE 30,
                                                 1998(6)     1997(4)       1998(1)      1998(6)     1997(4)
                                                 -----------------------------------------------------------
<S>                                              <C>         <C>         <C>            <C>         <C>
Net Asset Value, Beginning of Period...........   $11.26      $10.00        $12.53       $11.19      $10.00
                                                 -------     -------       -------      -------     -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income/(Loss).................     0.00(8)(9)   (0.02)(9)     (0.05)(4)   (0.09)(9)   (0.10)(9)
  Net Realized & Unrealized Gain on
   Investments.................................     2.12        1.90         (0.96)        2.11        1.90
                                                 -------     -------       -------      -------     -------
    Total From Investment Operations...........     2.12        1.88         (1.01)        2.02        1.80
                                                 -------     -------       -------      -------     -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income.........        -           -             -            -           -
  Distributions in Excess of Net Investment
   Income......................................    (0.68)      (0.62)            -        (0.64)      (0.61)
  Distributions from Net Realized Gains........    (0.04)      (0.00)(8)         -        (0.04)      (0.00)(8)
                                                 -------     -------       -------      -------     -------
    Total Distributions........................    (0.72)      (0.62)            -        (0.68)      (0.61)
                                                 -------     -------       -------      -------     -------
Net Asset Value, End of Period.................   $12.66      $11.26        $11.52       $12.53      $11.19
                                                 =======     =======       =======      =======     =======
Total Return(2)................................   20.11%      19.33%         (8.06)%     19.24%      18.48%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's).........  $18,330     $14,253       $51,752      $51,173     $35,802
  Ratio of Operating Expenses to Average Net
   Assets(3)...................................    0.94%       0.90%(5)      1.70%(5)     1.68%       1.65%(5)
  Ratio of Net Investment Income/(Loss) to
   Average Net Assets..........................    0.01%     (0.19)%(5)   (1.28)%(5)     (0.74)%    (0.94)%(5)
  Portfolio Turnover Rate......................      23%         33%           10%          23%         33%
  Ratio of Operating Expenses to Average Net
   Assets Without Credits Allowed by the
   Custodian(13)...............................    0.94%       0.91%(5)          -        1.68%       1.66%(5)
  Ratio of Operating Expenses to Average Net
   Assets Without Fee Waivers, Expenses
   Absorbed and/or Credits Allowed by the
   Custodian...................................    1.08%       1.45%(5)      1.88%(5)     1.83%       2.20%(5)
</TABLE>
    
 
  CONSERVATIVE GROWTH PORTFOLIO
 
   
<TABLE>
<CAPTION>
                                                        CLASS A                                        CLASS B
                                      --------------------------------------------   --------------------------------------------
                                         FISCAL                                         FISCAL
                                      PERIOD ENDED   YEAR ENDED   JULY 25, 1996 TO   PERIOD ENDED   YEAR ENDED   JULY 25, 1996 TO
                                      OCTOBER 31,     JUNE 30,        JUNE 30,       OCTOBER 31,     JUNE 30,        JUNE 30,
                                        1998(1)       1998(6)         1997(4)          1998(1)       1998(6)         1997(4)
                                      -------------------------------------------------------------------------------------------
<S>                                   <C>            <C>          <C>                <C>            <C>          <C>
Net Asset Value, Beginning of
Period..............................      $11.84       $10.86          $10.00            $11.74       $10.80          $10.00
                                        --------      -------          ------          --------      -------          ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income/(Loss)......        0.01         0.13(9)         0.08(9)         (0.03)         0.04(9)         0.01(9)
  Net Realized & Unrealized Gain on
   Investments......................       (0.88)        1.42            1.32            (0.86)         1.43            1.31
                                        --------      -------          ------          --------      -------          ------
    Total From Investment
    Operations......................       (0.87)        1.55            1.40            (0.89)         1.47            1.32
                                        --------      -------          ------          --------      -------          ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment
   Income...........................           -        (0.09)          (0.08)                -        (0.08)          (0.01)
  Distributions in Excess of Net
   Investment Income................           -        (0.42)          (0.46)                -        (0.39)          (0.51)
  Distributions from Net Realized
   Gains............................           -        (0.06)              -                 -        (0.06)              -
                                        --------      -------          ------          --------      -------          ------
    Total Distributions.............           -        (0.57)          (0.54)                -        (0.53)          (0.52)
                                        --------      -------          ------          --------      -------          ------
Net Asset Value, End of Period......      $10.97       $11.84          $10.86            $10.85       $11.74          $10.80
                                        ========      =======          ======          ========      =======          ======
Total Return(2).....................     (7.35)%       15.18%          14.39%           (7.58)%       14.44%          13.59%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period
   ($1,000's).......................    $100,024     $114,946        $136,141          $155,064     $169,269        $158,697
  Ratio of Operating Expenses to
   Average Net Assets(13)(3)........       0.95%(5)     0.95%           0.92%(5)          1.70%(5)     1.70%           1.67%(5)
  Ratio of Net Investment
   Income/(Loss) to Average Net
   Assets...........................       0.05%(5)     1.17%           0.81%(5)         (.70)%(5)     0.40%           0.06%(5)
  Portfolio Turnover Rate...........          9%          28%             20%                9%          28%             20%
  Ratio of Operating Expenses to
   Average Net Assets Without
   Credits Allowed by the
   Custodian(13)....................           -        0.95%           0.93%(5)              -        1.70%           1.68%(5)
  Ratio of Operating Expenses to
   Average Net Assets Without Fee
   Waivers, Expenses Absorbed and/or
   Credits Allowed by the
   Custodian........................       1.03%(5)     1.00%           1.17%(5)          1.78%(5)     1.74%           1.92%(5)
</TABLE>
    
 
   
Footnotes appear on page 84
    
                                       81
<PAGE>   84
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  BALANCED PORTFOLIO
 
   
<TABLE>
<CAPTION>
                                                        CLASS A                                        CLASS B
                                      --------------------------------------------   --------------------------------------------
                                         FISCAL                                         FISCAL
                                         PERIOD         YEAR                            PERIOD         YEAR
                                         ENDED         ENDED      JULY 25, 1996 TO      ENDED         ENDED      JULY 25, 1996 TO
                                      OCTOBER 31,     JUNE 30,        JUNE 30,       OCTOBER 31,     JUNE 30,        JUNE 30,
                                        1998(1)       1998(6)         1997(4)          1998(1)       1998(6)         1997(4)
                                      -------------------------------------------------------------------------------------------
<S>                                   <C>            <C>          <C>                <C>            <C>          <C>
Net Asset Value, Beginning of
Period..............................     $11.63        $10.95          $10.00            $11.63       $10.95          $10.00
                                        -------       -------         -------          --------      -------         -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income.............       0.05          0.22            0.20(9)           0.02         0.17            0.14(9)
  Net Realized & Unrealized
   Gain/(Loss) on Investments.......     (0.61)          1.25            1.27            (0.61)         1.22            1.25
                                        -------       -------         -------          --------      -------         -------
    Total From Investment
    Operations......................     (0.56)          1.47            1.47            (0.59)         1.39            1.39
                                        -------       -------         -------          --------      -------         -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment
   Income...........................     (0.05)         (0.23)          (0.20)           (0.02)        (0.20)          (0.14)
  Distributions in Excess of Net
   Investment Income................          -         (0.45)          (0.32)                -        (0.40)          (0.30)
  Distributions from Net Realized
   Gains............................          -         (0.11)          (0.00)(8)             -        (0.11)          (0.00)(8)
                                        -------       -------         -------          --------      -------         -------
    Total Distributions.............     (0.05)         (0.79)          (0.52)           (0.02)        (0.71)          (0.44)
                                        -------       -------         -------          --------      -------         -------
Net Asset Value, End of Period......     $11.02        $11.63          $10.95            $11.02       $11.63          $10.95
                                        =======       =======         =======          ========      =======         =======
Total Return(2).....................    (4.85)%        14.32%          15.02%           (5.09)%       13.47%          14.23%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period
   ($1,000's).......................    $93,491      $101,726        $109,421          $110,626     $114,944         $99,821
  Ratio of Operating Expenses to
   Average Net Assets(13)(3)........      0.95%(5)      0.95%           0.92%(5)          1.70%(5)     1.70%           1.67%(5)
  Ratio of Net Investment
   Income/Loss to Average Net
   Assets...........................      1.22%(5)      2.14%           2.48%(5)          0.47%(5)     1.39%           1.73%(5)
  Portfolio Turnover Rate...........         3%           29%             46%                3%          29%             46%
  Ratio of Operating Expenses to
   Average Net Assets Without
   Credits Allowed by the
   Custodian(13)....................          -         0.95%           0.93%(5)              -        1.70%           1.68%(5)
  Ratio of Operating Expenses to
   Average Net Assets Without Fee
   Waivers, Expenses Absorbed and/or
   Credits Allowed by the
   Custodian........................      1.02%(5)      1.00%           1.17%(5)          1.77%(5)     1.75%           1.92%(5)
</TABLE>
    
 
  FLEXIBLE INCOME PORTFOLIO
 
   
<TABLE>
<CAPTION>
                                                        CLASS A                                        CLASS B
                                      --------------------------------------------   --------------------------------------------
                                         FISCAL                                         FISCAL
                                         PERIOD         YEAR                            PERIOD         YEAR
                                         ENDED         ENDED      JULY 25, 1996 TO      ENDED         ENDED      JULY 25, 1996 TO
                                      OCTOBER 31,     JUNE 30,        JUNE 30,       OCTOBER 31,     JUNE 30,        JUNE 30,
                                        1998(1)       1998(6)         1997(4)*         1998(1)       1998(6)         1997(4)
                                      -------------------------------------------------------------------------------------------
<S>                                   <C>            <C>          <C>                <C>            <C>          <C>
Net Asset Value, Beginning of
Period..............................     $10.79        $10.57          $10.00           $10.79        $10.57          $10.00
                                        -------        ------          ------          -------        ------          ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income.............       0.12          0.45            0.43(9)          0.10          0.31            0.38(9)
  Net Realized & Unrealized
   Gain/(Loss) on Investments.......      (0.15)         0.67            0.70           (0.16)          0.73            0.68
                                        -------        ------          ------          -------        ------          ------
    Total From Investment
    Operations......................      (0.03)         1.12            1.13           (0.06)          1.04            1.06
                                        -------        ------          ------          -------        ------          ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment
   Income...........................      (0.13)        (0.45)          (0.43)          (0.10)         (0.37)          (0.38)
  Distributions in Excess of Net
   Investment Income................          -         (0.21)          (0.13)               -         (0.21)          (0.11)
  Distributions from Net Realized
   Gains............................          -         (0.24)          (0.00)(8)            -         (0.24)          (0.00)(8)
                                        -------        ------          ------          -------        ------          ------
    Total Distributions.............      (0.13)        (0.90)          (0.56)          (0.10)         (0.82)          (0.49)
                                        -------        ------          ------          -------        ------          ------
Net Asset Value, End of Period......     $10.63        $10.79          $10.57           $10.63        $10.79          $10.57
                                        =======        ======          ======          =======        ======          ======
Total Return(2).....................    (0.26)%        11.07%          11.58%          (0.51)%        10.24%          10.80%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period
   ($1,000's).......................     $9,766        $8,808         $12,613          $11,142        $7,684          $7,385
  Ratio of Operating Expenses to
   Average Net Assets(13)(3)........      0.95%(5)      0.95%           0.92%(5)         1.70%(5)      1.70%           1.67%(5)
  Ratio of Net Investment Income to
   Average Net Assets...............      3.62%(5)      4.07%           4.95%(5)         2.87%(5)      3.32%           4.20%(5)
  Portfolio Turnover Rate...........        15%           24%             54%              15%           24%             54%
  Ratio of Operating Expenses to
   Average Net Assets Without
   Credits Allowed by the
   Custodian(13)....................          -         0.95%           0.93%(5)             -         1.70%           1.68%(5)
  Ratio of Operating Expenses to
   Average Net Assets Without Fee
   Waivers, Expenses Absorbed and/or
   Credits Allowed by the
   Custodian........................      1.37%(5)      1.23%           1.67%(5)         2.12%(5)      1.98%           2.42%(5)
</TABLE>
    
 
   
Footnotes appear on page 84
    
                                       82
<PAGE>   85
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  INCOME PORTFOLIO
 
   
<TABLE>
<CAPTION>
                                                        CLASS A                                        CLASS B
                                      --------------------------------------------   --------------------------------------------
                                         FISCAL                                         FISCAL
                                      PERIOD ENDED   YEAR ENDED   JULY 25, 1996 TO   PERIOD ENDED   YEAR ENDED   JULY 25, 1996 TO
                                      OCTOBER 31,     JUNE 30,        JUNE 30,       OCTOBER 31,     JUNE 30,        JUNE 30,
                                        1998(1)       1998(6)         1997(4)          1998(1)       1998(6)         1997(4)
                                      -------------------------------------------------------------------------------------------
<S>                                   <C>            <C>          <C>                <C>            <C>          <C>
Net Asset Value, Beginning of
Period..............................     $10.34        $10.13          $10.00           $10.34        $10.13          $10.00
                                         ------        ------          ------           ------        ------          ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income.............       0.19          0.64            0.58(9)          0.16          0.56            0.51(9)
  Net Realized & Unrealized
   Gain/(Loss) on
   Investments......................      (0.09)         0.22            0.14(12)        (0.09)         0.22            0.14(12)
                                         ------        ------          ------           ------        ------          ------
    Total From Investment
    Operations......................       0.10          0.86            0.72             0.07          0.78            0.65
                                         ------        ------          ------           ------        ------          ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment
   Income...........................      (0.19)        (0.65)          (0.58)           (0.16)        (0.57)          (0.51)
  Distributions in Excess of Net
   Investment Income................          -         (0.00)(8)       (0.01)               -         (0.00)(8)       (0.01)
  Distributions from Net Realized
   Gains............................          -             -           (0.00)(8)            -             -           (0.00)(8)
                                         ------        ------          ------           ------        ------          ------
    Total Distributions.............      (0.19)        (0.65)          (0.59)           (0.16)        (0.57)          (0.52)
                                         ------        ------          ------           ------        ------          ------
Net Asset Value, End of Period......     $10.25        $10.34          $10.13           $10.25        $10.34          $10.13
                                         ======        ======          ======           ======        ======          ======
Total Return(2).....................      (0.96)%       8.71%           7.38%            0.70%         7.90%           6.63%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period
   ($1,000's).......................     $7,611        $7,793         $13,410           $5,698        $4,084          $4,537
  Ratio of Operating Expenses to
   Average Net
   Assets(13)(3)....................      0.95%(5)      0.95%           0.93%(5)         1.70%(5)      1.70%           1.68%(5)
  Ratio of Net Investment
   Income/Loss to Average Net
   Assets...........................      5.40%(5)      6.23%           6.09%(5)         4.65%(5)      5.48%           5.34%(5)
  Portfolio Turnover Rate...........        22%           14%             56%              22%           14%             56%
  Ratio of Operating Expenses to
   Average Net Assets Without
   Credits Allowed by the
   Custodian(13)....................          -         0.95%           0.93%(5)             -         1.71%           1.68%(5)
  Ratio of Operating Expenses to
   Average Net Assets Without Fee
   Waivers, Expenses Absorbed and/or
   Credits Allowed by the
   Custodian........................      1.53%(5)      1.25%           1.65%(5)         2.28%(5)      2.01%           2.40%(5)
</TABLE>
    
 
   
Footnotes appear on page 84
    
                                       83
<PAGE>   86
- --------------------------------------------------------------------------------
 
   
FOOTNOTES TO FINANCIAL HIGHLIGHTS
 
<TABLE>
<C>    <S>
  (1)  Fiscal year end changed to October 31.
  (2)  Total return is not annualized for periods less than one
       year and does not reflect any applicable sales charges. The
       total return would have been lower if certain fees had not
       been waived and/or expenses absorbed by the investment
       advisor or if fees had not been reduced by credits allowed
       by the custodian.
  (3)  Ratio of operating expenses to average net assets includes
       expenses paid indirectly beginning in fiscal 1995.
  (4)  From the commencement of offering shares.
  (5)  Annualized.
  (6)  On March 23, 1998, WM Advisors, Inc. replaced Sierra
       Investment Advisers Corporation as investment adviser to the
       Fund. In the case of the portfolios, on March 23, 1998, WM
       Advisors, Inc. replace Sierra Investment Services
       Corporation as investment advisor to the portfolio.
  (7)  On July 1, 1994, the Funds commenced selling Class B shares
       in addition to Class A shares. Those shares in existence
       prior to July 1, 1994 were designated Class A shares.
  (8)  Amount represents less than $0.01 per share.
  (9)  Per share numbers have been calculated using the average
       shares method.
 (10)  The ratio and per share numbers include custodian fees
       before reduction by credits allowed by the custodian as
       required by amended disclosure requirements effective
       September 1, 1995.
 (11)  Total returns do not reflect a sales charge and are not
       annualized.
 (12)  The amount shown may not accord with the change in aggregate
       gains and losses of portfolio securities due to the timing
       of sales and redemptions of Fund shares.
 (13)  The Portfolios will indirectly incur their pro rata share of
       the expenses of the Funds when they purchase. Such
       underlying Fund expenses are not included in the table.
 (14)  On May 2, 1994, the Fund commenced selling Class B shares.
       Those shares in existence prior to May 2, 1994 were
       designated as Class A shares.
 (15)  Formerly, Composite Cash Management Company Money Market
       Portfolio.
 (16)  Formerly, Composite Cash Management Company Tax-Exempt
       Portfolio.
 (17)  Formerly, Composite U.S. Government Securities, Inc.
 (18)  On March 30, 1994 the Fund commenced selling Class B shares.
       Those shares in existence prior to March 30, 1994 were
       designated as Class A shares.
 (19)  Formerly, Composite Income Fund, Inc.
 (20)  Amounts distributed in excess of accumulated net investment
       income as determined for financial statement purposes have
       been reported as distributions from paid-in capital at the
       fiscal year end in which the distribution was made. Certain
       of these distributions which are reported as being from
       paid-in capital for financial statement purposes may be
       reported to shareholders as taxable distributions due to
       differing tax and accounting rules.
 (21)  Formerly, Composite Tax-Exempt Bond Fund, Inc.
 (22)  Formerly, Composite Bond & Stock Fund, Inc.
 (23)  Formerly, Composite Growth & Income Fund.
 (24)  Formerly, Composite Northwest Fund, Inc.
</TABLE>
    
 
                                       84
<PAGE>   87

For more information about the WM Group of Funds

The WM Group's Statement of Additional Information (SAI) and Annual and 
Semi-annual Reports to shareholders include additional information about the 
Funds and Portfolios. The SAI is incorporated by reference into this 
prospectus, which means they are part of this prospectus for legal purposes. 
The Funds' and Portfolio's Annual Reports discuss the market conditions and 
investment strategies that significantly affected performance during the last 
fiscal year. You may obtain free copies of these materials, request other 
information about the WM Group of Funds, or make shareholder inquiries, by 
contacting your financial advisor or by calling toll-free at 1-800-222-5852.

You may review and copy information about the Funds and Portfolios, including 
the SAI, at the Securities and Exchange Commission's public reference room in 
Washington, D.C. You may call the Commission at 1-800-SEC-0330 for information 
about the operation of the public reference room. You may also access reports 
and other information about the Funds and Portfolios on the Commission's 
Internet site at http://www.sec.gov. You may obtain copies of this information, 
with payment of a duplication fee, by writing the Public Reference Section of 
the Commission, Washington, D.C. 20549-6009. You may need to refer to the 
following file number:


<TABLE>
<S>                                <C>                                      <C>
Money Market Fund                  California Money Fund

Tax-Exempt Money Market Fund       Short Term High Quality Bond Fund

U.S. Government Securities         Target Maturity 2002 Fund
Fund

Income Fund                        California Municipal Fund

High Yield Fund                    California Insured Intermediate           Strategic Growth Portfolio
                                   Municipal Fund

Tax-Exempt Bond Fund               Florida Insured Municipal Fund            Conservative Growth Portfolio

Bond & Stock Fund                  Growth Fund                               Balanced Portfolio

Growth & Income Fund               Emerging Growth Fund                      Flexible Income Portfolio

Northwest Fund                     International Growth Fund                 Income Portfolio

File No. 333-36941                 File No. 33-27489                         File No. 333-01999
</TABLE>
<PAGE>   88
   
                                                                         I&S
                                                                      PROSPECTUS
                                                                   March 1, 1999
    

                                WM GROUP OF FUNDS

   
                                  MONEY FUNDS
                                Money Market Fund 
                          Tax-Exempt Money Market Fund
                              California Money Fund
    

   
                               FIXED-INCOME FUNDS
                        Short Term High Quality Bond Fund
                         U.S. Government Securities Fund
                                   Income Fund
                                 High Yield Fund
    

   
                                 MUNICIPAL FUNDS
                              Tax-Exempt Bond Fund
                            California Municipal Fund
                 California Insured Intermediate Municipal Fund
                         Florida Insured Municipal Fund
    


   
                                  EQUITY FUNDS
                                Bond & Stock Fund
                              Growth & Income Fund
                                 Northwest Fund
                                   Growth Fund
                              Emerging Growth Fund
                            International Growth Fund
    

   
    

   
                 The WM Group of Funds provide a broad selection
                    of investment alternatives to investors.
    

The Securities and Exchange Commission has not approved or disapproved these
securities or passed upon the adequacy of this prospectus. Any representation to
the contrary is a crime.

<PAGE>   89
 
                         THE   WM   GROUP   OF   FUNDS
 
- --------------------------------------------------------------------------------
 
   
                            CONTENTS [TO BE UPDATED]
    
 
   
<TABLE>
<CAPTION>
                                                  PAGE
<S>                                               <C>
Risk/Return Summary                                 2
Summary of Principal Risks                         20
Principal Risks by Fund                            25
Fees and Expenses of the Funds                     28
Description of the Funds                           31
  Money Funds                                      31
  Fixed-Income Funds                               32
  Municipal Funds                                  33
  Equity Funds                                     35
  Common Investment Practices                      37
Ways to Set Up Your Account                        46
How Can I Invest in the Funds?                     47
Class I Shares                                     49
Class S Shares                                     49
Distribution of Income and Capital Gains           50
How Can I Sell Shares?                             50
How Can I Exchange My Shares?                      51
Dividends, Capital Gains and Taxes                 52
Organization                                       52
Financial Highlights                               55
</TABLE>
    
<PAGE>   90

                               RISK/RETURN SUMMARY

   
The WM Group of Funds provide a broad range of investment choices, including
asset allocation strategies available through the WM Strategic Asset Management
Portfolios (the "Portfolios"). This summary identifies the investment objective
and principal investment strategies of each Fund and Portfolio. A "Summary of
Principal Risks" describing the principal risks of investing in the Funds and
Portfolios begins on page [__]. You can find additional information about each
Fund and Portfolio, including a more detailed description of the risks of an
investment in each Fund or Portfolio, after this summary. Investments mentioned
in the summary and described in greater detail under "Description of the Funds"
or "Common Investment Practices" below appear in BOLD TYPE. Please be sure to
read the more complete descriptions of the Funds and Portfolios, and the related
risks, before you invest.
    

   
Below the description of each Fund or Portfolio is a bar chart showing how the
investment returns of its Class A shares have varied in the past ten years, or
in the years since the Fund or Portfolio began if it is less than ten years old.
The table following each bar chart shows how, for each Class of shares, average
annual returns of the Fund (other than the Money Funds) or Portfolio compare to
returns of a broad-based securities market index for the last one, five and ten
years (or, for newer Funds or Portfolios, for shorter periods). Performance
shown in the table reflects the maximum applicable sales charge, but performance
shown in the bar chart does not reflect any sales charges. PAST PERFORMANCE IS
NOT NECESSARILY AN INDICATION OF FUTURE PERFORMANCE.
    

         There can be no assurance that any Fund or Portfolio will achieve its
objective. It is possible to lose money on investments in the Funds and
Portfolios. An investment in a Fund or Portfolio is not a deposit of a bank and
is not insured or guaranteed by the Federal Deposit Insurance Corporation or any
other government agency. Although the Money Funds seek to preserve the value of 
your investment at $1.00 per share, it is possible to lose money by investing 
in the Money Funds.


                                       -2-
<PAGE>   91
   
                                MONEY MARKET FUND

- -    OBJECTIVE. This Fund seeks to maximize current income while preserving
     capital and maintaining liquidity.

- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests in high-quality money
     market instruments. The Fund's investments in high-quality money market
     instruments may include U.S. GOVERNMENT SECURITIES, FLOATING AND VARIABLE
     RATE SECURITIES, MUNICIPAL OBLIGATIONS, U.S. DOLLAR DENOMINATED FOREIGN
     INVESTMENTS, ASSET-BACKED SECURITIES, REPURCHASE AGREEMENTS, and
     WHEN-ISSUED AND DELAYED - DELIVERY SECURITIES.

                               YEARLY PERFORMANCE*

                                   [BAR GRAPH]


<TABLE>
<CAPTION>
                  Calendar Year                          Annual Return(%)
                  -------------                          ----------------
                  <S>                                    <C>
                      1989                                     8.60
                      1990                                     7.61
                      1991                                     5.41
                      1992                                     3.07
                      1993                                     2.41
                      1994                                     3.47
                      1995                                     5.33
                      1996                                     4.88
                      1997                                     5.04
                      1998
</TABLE>

During the periods shown above, the highest quarterly return was _____% (for the
quarter ended __________ __, 19__), and the lowest was ____% (for the quarter
ended _________ __, 19__).

                                PERFORMANCE TABLE*


<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR    PAST ONE   PAST FIVE   PAST TEN   SINCE
PERIODS ENDING DECEMBER 31, 1998)    YEAR       YEARS       YEARS      INCEPTION
                                                                       (3/23/98)
<S>                                  <C>        <C>         <C>        <C>
Class I Shares                                                         N/A
Class S Shares                                  N/A         N/A
</TABLE>


* The Fund's performance through ________ __, 19__ benefitted from the agreement
  of WM Advisors and its affiliates to limit the Fund's expenses.
    


                                       -3-
<PAGE>   92
   
                          TAX-EXEMPT MONEY MARKET FUND

- -    OBJECTIVE. This Fund seeks to maximize current income that is exempt from
     federal income tax while preserving capital and maintaining liquidity.

- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in
     high-quality, short-term fixed income obligations issued by states,
     counties, cities or other governmental entities that generate income exempt
     from federal income tax. The Fund's investments in high-quality,
     short-term, debt securities may include VARIABLE RATE OBLIGATIONS, HOLDINGS
     IN OTHER INVESTMENT COMPANIES, MUNICIPAL LEASES, WHEN-ISSUED AND
     DELAYED-DELIVERY SECURITIES and ALTERNATIVE MINIMUM TAX ("AMT") - SUBJECT
     BONDS.
                               YEARLY PERFORMANCE*

                                   [BAR GRAPH]

<TABLE>
<CAPTION>
                  Calendar Year                          Annual Return(%)
                  -------------                          ----------------
                  <S>                                    <C>
                      1989                                     6.05
                      1990                                     5.77
                      1991                                     4.19
                      1992                                     2.41
                      1993                                     2.06
                      1994                                     2.37
                      1995                                     4.01
                      1996                                     3.05
                      1997                                     3.18
                      1998
</TABLE>

During the periods shown above, the highest quarterly return was _____% (for the
quarter ended _______ __, 19__), and the lowest was ____% (for the quarter ended
________ __, 19__).

                                PERFORMANCE TABLE*

<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR   PAST ONE   PAST FIVE   PAST TEN   SINCE
PERIODS ENDING DECEMBER 31, 1998)   YEAR       YEARS       YEARS      INCEPTION
<S>                                 <C>        <C>         <C>        <C>
Class I Shares                      N/A        N/A         N/A        N/A
Class S Shares                      N/A        N/A         N/A        N/A
</TABLE>

* The Fund's performance through ________ __, 19__ benefitted from the agreement
  of WM Advisors and its affiliates to limit the Fund's expenses.
    

   
** The Tax-Exempt Money Market Fund has yet to issue Class I or Class S shares.
    




                                       -4-
<PAGE>   93
   
                              CALIFORNIA MONEY FUND

- -    OBJECTIVE. This non-diversified Fund seeks to maximize current income that
     is exempt from federal and California state personal income tax, consistent
     with safety of principal and maintenance of liquidity.

- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in
     high-quality, short-term fixed income obligations issued by states,
     counties, cities or other governmental bodies that generate income exempt
     from California state personal income tax. The Fund may also invest in
     high quality instruments that may generate taxable income, including U.S.
     GOVERNMENT SECURITIES, MORTGAGE- AND ASSET-BACKED SECURITIES (including
     collateralized mortgage obligations) and REPURCHASE AGREEMENTS.

- -    The Fund is "NON-DIVERSIFIED," which means that the Fund may invest more of
     its assets in the securities of fewer issuers than other mutual funds.

                               YEARLY PERFORMANCE*

                                   [BAR GRAPH]
<TABLE>
<CAPTION>
              Calendar Year                             Annual Return (%)
              -------------                             -----------------
                 <S>                                          <C>
                 1991                                         4.52
                 1992                                         3.35
                 1993                                         2.07
                 1994                                         1.81
                 1995                                         2.79
                 1996                                         3.00
                 1997                                         2.81
                 1998
</TABLE>



During the periods shown above, the highest quarterly return was ____% (for the
quarter ended _______ __, 19__), and the lowest was ___% (for the quarter ended
_______ __, 19__).

                                PERFORMANCE TABLE*

<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR   PAST ONE   PAST FIVE   LIFE OF FUND      SINCE CLASS S
PERIODS ENDING DECEMBER 31, 1998)   YEAR       YEARS       (SINCE 7/25/96)   INCEPTION
                                                                             (7/1/94)
<S>                                 <C>        <C>         <C>               <C>
Class I Shares                                 N/A                           N/A
Class S Shares                                 N/A         N/A
</TABLE>

* The Fund's performance through ________ __, 19__ benefitted from the agreement
  of WM Advisors and its affiliates to limit the Fund's expenses.
    


                                       -5-
<PAGE>   94
   
                        SHORT TERM HIGH QUALITY BOND FUND

- -    OBJECTIVE. This Fund seeks as high a level of current income as is
     consistent with prudent investment management and stability of principal.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in high-grade
     short-term bonds and other debt securities. The Fund generally maintains a
     dollar-weighted average portfolio maturity of three years or less. The
     Fund's investments may include U.S. GOVERNMENT SECURITIES, REPURCHASE
     AGREEMENTS AND MORTGAGE- AND ASSET-BACKED SECURITIES.


                               YEARLY PERFORMANCE*

                                   [BAR GRAPH]
<TABLE>
<CAPTION>
              Calendar Year                             Annual Return (%)
              -------------                             -----------------
                 <S>                                          <C>
                 1995                                         4.42
                 1996                                         5.05
                 1997                                         6.15
                 1998

</TABLE>

During the periods shown above, the highest quarterly return was ____% (for the
quarter ended _______ __, 19__), and the lowest was ___% (for the quarter ended
_______ __, 19__).

                                PERFORMANCE TABLE*


<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR      PAST ONE  PAST FIVE  LIFE OF FUND  SINCE CLASS S
PERIODS ENDING DECEMBER 31, 1998)      YEAR      YEARS      (7/25/96)     INCEPTION
                                                                          (7/1/94)
<S>                                    <C>       <C>        <C>           <C>
Class I Shares                                   N/A                      N/A
Class S Shares                                   N/A        N/A
Lehman Brothers Mutual Fund Short (1-5
[year]) Investment Grade Debt Index**            
</TABLE>



*  The Fund's performance through ________ __, 19__ benefitted from the 
agreement of WM Advisors and its affiliates to limit the Fund's expenses.


** This index includes all investment-grade, corporate debt securities with
maturities of one to five years.
    



                                       -6-
<PAGE>   95
   
                         U.S. GOVERNMENT SECURITIES FUND

- -    OBJECTIVE. This Fund seeks a high level of current income, consistent with
     safety and liquidity.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in securities
     issued by the U.S. Government and its agencies, including collateralized
     mortgage obligations and other MORTGAGE-BACKED SECURITIES. The Fund may
     also invest in fixed-income securities and DOLLAR ROLLS for leverage.


                               YEARLY PERFORMANCE*

                                   [BAR GRAPH]
<TABLE>
<CAPTION>
              Calendar Year                             Annual Return (%)
              -------------                             -----------------
                 <S>                                         <C>
                 1989                                         2.94
                 1990                                        12.31 
                 1991                                        -4.91
                 1992                                        11.72
                 1993                                         7.03
                 1994                                         8.12
                 1995                                        19.45
                 1996                                         2.48
                 1997                                         9.92
                 1998
</TABLE>



During the periods shown above, the highest quarterly return was ______% (for
the quarter ended _______ __, 19__), and the lowest was _____% (for the quarter
ended _______ __, 19__).

                                PERFORMANCE TABLE*


<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR   PAST ONE   PAST FIVE   PAST TEN   SINCE
PERIODS ENDING DECEMBER 31, 1998)   YEAR       YEARS       YEARS      INCEPTION
                                                                      (3/2/94)
<S>                                 <C>        <C>         <C>        <C>
Class I Shares                                 N/A         N/A
Class S Shares                                 N/A         N/A
Lehman Brothers Government Bond
Index**
</TABLE>



*  The Fund's performance through ________ __, 19__ benefitted from the 
agreement of WM Advisors and its affiliates to limit the Fund's expenses.



** This index includes all U.S. Government agency and Treasury securities.
    


                                       -7-
<PAGE>   96
   
                                   INCOME FUND

- -    OBJECTIVE. This Fund seeks a high level of current income consistent with
     preservation of capital.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in a
     diversified pool of debt securities including U.S. GOVERNMENT SECURITIES
     and MORTGAGE-BACKED SECURITIES (including collateralized mortgage
     obligations), of which up to 35% may be in lower-rated fixed income
     securities (which are sometimes called "junk bonds"). The Fund may also
     invest in convertible securities.



                              YEARLY PERFORMANCE*

                                   [BAR GRAPH]
<TABLE>
<CAPTION>
              Calendar Year                             Annual Return (%)
              -------------                             -----------------
                 <S>                                          <C>
                 1989                                          6.58
                 1990                                          4.32
                 1991                                         15.93
                 1992                                         13.57
                 1993                                         10.82
                 1994                                         -4.82
                 1995                                         21.58
                 1996                                          3.46
                 1997                                         10.51
                 1998
</TABLE>




During the periods shown above, the highest quarterly return was ____% (for the
quarter ended _____ __, 19__), and the lowest was ______% (for the quarter ended
______ __, 19__).


                                PERFORMANCE TABLE*



<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR      PAST ONE   PAST FIVE   PAST TEN   SINCE CLASS S
PERIODS ENDING DECEMBER 31, 1998)      YEAR       YEARS       YEARS      INCEPTION
                                                                         (3/27/98)
<S>                                    <C>        <C>         <C>        <C>
Class I Shares                                    N/A         N/A
Class S Shares                                    N/A         N/A
Lehman Brothers Government/Corporate
Bond Index**
</TABLE>



 * The Fund's performance through ______________, 19__ benefitted from the
   agreement of WM Advisors and its affiliates to limit the Fund's expenses.



** This index is generally considered representative of the U.S. government and
   corporate bond markets.
    



                                       -8-
<PAGE>   97

                                 HIGH YIELD FUND

- -    OBJECTIVE. This Fund seeks to provide a high level of current income.

   
- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in
     high-yielding lower-rated securities (sometimes called "junk bonds"), which
     may include FOREIGN INVESTMENTS. The Fund may also invest in higher-rated
     FIXED-INCOME SECURITIES, preferred stock and convertible securities.
    

     No performance information is available for the High Yield Fund because it
has not yet been in operation for a full year.




                                      -9-
<PAGE>   98
   
                              TAX-EXEMPT BOND FUND

- -    OBJECTIVE. This Fund seeks to provide a high level of income that is exempt
     from federal income taxes while protecting investors' capital.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in obligations
     issued by states, counties, cities or other governmental entities,
     including municipal leases, ALTERNATIVE MINIMUM TAX ("AMT") SUBJECT BONDS
     AND INVERSE FLOATING RATE OBLIGATIONS, that generate income exempt from
     federal income tax. The Fund may also invest in taxable FIXED-INCOME
     SECURITIES and STRATEGIC TRANSACTIONS such as interest rate futures and
     options.



                              YEARLY PERFORMANCE*

                                   [BAR GRAPH]
<TABLE>
<CAPTION>
              Calendar Year                             Annual Return (%)
              -------------                             -----------------
                 <S>                                          <C>
                 1989                                          8.08
                 1990                                          6.71
                 1991                                         11.36
                 1992                                          9.00
                 1993                                         12.54
                 1994                                         -6.53
                 1995                                         18.25
                 1996                                          2.52
                 1997                                          8.59
                 1998
</TABLE>
 



During the periods shown above, the highest quarterly return was ____% (for the
quarter ended _____ __, 19__), and the lowest was ____% (for the quarter ended
_______ __, 19__).


                               PERFORMANCE TABLE*



<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR       PAST ONE   PAST FIVE   PAST TEN    SINCE
PERIODS ENDING DECEMBER 31, 1998)       YEAR       YEARS       YEARS OR    INCEPTION
                                                               SINCE       (3/23/98)
                                                               INCEPTION
<S>                                     <C>        <C>         <C>         <C>
Class I Shares                                     N/A         N/A
Class S Shares                                     N/A         N/A
Lehman Brothers Municipal Bond Index**
</TABLE>



 * The Fund's performance through _____________, 19__ benefitted from the
   agreement of WM Advisors and its affiliates to limit the Fund's expenses.



** This index includes all investment grade, tax-exempt bond issues.
    



                                      -10-
<PAGE>   99
   
                            CALIFORNIA MUNICIPAL FUND

- -    OBJECTIVE. This non-diversified Fund seeks to provide as high a level of
     current income that is exempt from federal and California state income tax
     as is consistent with prudent investment management and preservation of
     capital.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in
     intermediate- and long-term California municipal obligations, including
     municipal leases and AMT-SUBJECT BONDS. The Fund may also invest in other
     MUNICIPAL OBLIGATIONS and STRATEGIC TRANSACTIONS such as interest rate
     futures and options.

- -    The Fund is "NON-DIVERSIFIED," which means that the Fund may invest more 
     of its assets in the securities of fewer issuers than other mutual funds.


                              YEARLY PERFORMANCE*

                                   [BAR GRAPH]
<TABLE>
<CAPTION>
              Calendar Year                             Annual Return (%)
              -------------                             -----------------
                 <S>                                          <C>
                 1991                                          7.16
                 1992                                         10.56
                 1993                                         13.84
                 1994                                         -2.94
                 1995                                          7.57
                 1996                                          6.40
                 1997                                          8.83
                 1998                                          9.26
</TABLE>




During the periods shown above, the highest quarterly return was ___% (for the
quarter ended _______ __, 19__), and the lowest was ___% (for the quarter ended
_______ __, 19__).


                               PERFORMANCE TABLE*



<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR      PAST ONE  PAST FIVE  LIFE OF FUND  SINCE CLASS S
PERIODS ENDING DECEMBER 31, 1998)      YEAR      YEARS      (SINCE        INCEPTION
                                                            7/25/96)      (7/1/94)
<S>                                    <C>       <C>        <C>           <C>
Class I Shares                                   N/A                      N/A
Class S Shares                                              N/A
Lehman Brothers Municipal Bond Index**
</TABLE>



 * The Fund's performance through __________, 19__ benefitted from the agreement
   of WM Advisors and its affiliates to limit the Fund's expenses.



** This index includes all investment grade tax-exempt bond issues.
    



                                      -11-
<PAGE>   100
   
                 CALIFORNIA INSURED INTERMEDIATE MUNICIPAL FUND

- -    OBJECTIVE. This non-diversified Fund seeks to provide as high a level of
     current income that is exempt from federal and California state income tax
     as is consistent with prudent investment management and preservation of
     capital.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in
     intermediate-term insured California municipal obligations, including
     municipal leases and AMT-Subject Bonds. The weighted average effective
     maturity of the Fund's investments is ten years or less, and the maximum
     effective maturity of any of its investments is fifteen years. The Fund may
     also invest in other MUNICIPAL OBLIGATIONS and STRATEGIC TRANSACTIONS such
     as interest rate futures and options.

- -    The Fund is "NON-DIVERSIFIED," which means that the Fund may invest more 
     of its assets in the securities of fewer issuers than other mutual funds.


                               YEARLY PERFORMANCE*


                                   [BAR GRAPH]

<TABLE>
<CAPTION>
                  Calendar Year                          Annual Return(%)
                  -------------                          ----------------
                  <S>                                    <C>
                      1995                                     8.71
                      1996                                     6.25
                      1997                                     6.97
                      1998
</TABLE>


During the periods shown above, the highest quarterly return was ____% (for the
quarter ended _______ __, 19__), and the lowest was ____% (for the quarter ended
______ __, 19__).


                                PERFORMANCE TABLE*



<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR        PAST ONE YEAR   LIFE OF FUND      SINCE CLASS S
PERIODS ENDING DECEMBER 31, 1998)                        (SINCE 7/25/96)   INCEPTION
                                                                           (7/1/94)
<S>                                      <C>             <C>               <C>
Class I Shares                                                             N/A
Class S Shares                                           N/A
Lehman Brothers Municipal Bond Index**
</TABLE>



 * The Fund's performance through _________, 19__ benefitted from the agreement
   of WM Advisors and its affiliates to limit the Fund's expenses.



** This index includes all investment grade tax-exempt bond issues.
    



                                      -12-
<PAGE>   101
   
                         FLORIDA INSURED MUNICIPAL FUND

- -    OBJECTIVE. This non-diversified Fund seeks to provide as high a level of
     current income that is exempt from federal income tax as is consistent with
     prudent investment management and preservation of capital. The Fund also
     seeks to ensure that the value of its shares is exempt from Florida
     intangible personal property tax.

- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in
     intermediate- and long-term insured Florida municipal obligations,
     including municipal leases and AMT-SUBJECT BONDS. The Fund may also invest
     in other MUNICIPAL OBLIGATIONS and interest rate futures and options.

- -    The Fund is "NON-DIVERSIFIED," which means that the Fund may invest more 
     of its assets in the securities of fewer issuers than other mutual funds.


                               YEARLY PERFORMANCE*

                                   [BAR GRAPH]

<TABLE>
<CAPTION>
                  Calendar Year                          Annual Return(%)
                  -------------                          ----------------
                  <S>                                    <C>
                      1994                                    -1.50
                      1995                                     6.01
                      1996                                     7.56
                      1997                                     8.43
                      1998
</TABLE>


During the periods shown above, the highest quarterly return was ____% (for the
quarter ended _______ __, 199_), and the lowest was ____% (for the quarter ended
________ __, 19__).

                                PERFORMANCE TABLE*

<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR      PAST ONE  PAST FIVE  LIFE OF FUND  SINCE CLASS S
PERIODS ENDING DECEMBER 31, 1998)      YEAR      YEARS      (SINCE        INCEPTION
                                                            7/25/96)      (7/1/94)
<S>                                    <C>       <C>        <C>           <C>
Class I Shares                                   N/A                      N/A
Class S Shares                                   N/A        N/A
Lehman Brothers Municipal Bond Index**
</TABLE>


* The Fund's performance through ______________________ __, 19__ benefitted 
from the agreement of WM Advisors and its affiliates to limit the Fund's 
expenses.



** This index includes all investment grade tax-exempt bond issues.
    


                                      -13-

<PAGE>   102
   
                                BOND & STOCK FUND

- -    OBJECTIVE. This Fund seeks to provide continuity of income, conservation of
     principal and long-term growth of income and principal.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in common
     stocks, preferred stocks, bonds and convertible securities. At least 25% of
     the Fund's assets are generally invested in debt securities. The Fund's
     investments may include U.S. GOVERNMENT SECURITIES, AMERICAN DEPOSITORY
     RECEIPTS (ADRS) AND EUROPEAN DEPOSITORY RECEIPTS (EDRS), MORTGAGE-BACKED
     SECURITIES (including collateralized mortgage obligations), REPURCHASE
     AGREEMENTS and REAL ESTATE INVESTMENT TRUSTS (REITS)



                               YEARLY PERFORMANCE*


                                   [BAR GRAPH]

<TABLE>
<CAPTION>
                  Calendar Year                          Annual Return(%)
                  -------------                          ----------------
                  <S>                                    <C>
                      1989                                    13.21
                      1990                                    -2.29
                      1991                                    16.96
                      1992                                    11.92
                      1993                                    13.99
                      1994                                    -0.09
                      1995                                    22.55
                      1996                                    15.66
                      1997                                    20.81
                      1998
</TABLE>


During the periods shown above, the highest quarterly return was ____% (for the
quarter ended ________ __, 19__), and the lowest was___% (for the quarter ended
________ __, 19__).


                                PERFORMANCE TABLE*



<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR        PAST ONE   PAST FIVE   PAST TEN   SINCE CLASS S
PERIODS ENDING DECEMBER 31, 1998)        YEAR       YEARS       YEARS      INCEPTION
                                                                           (5/28/98)
<S>                                      <C>        <C>         <C>        <C>
Class I Shares                           N/A        N/A         N/A        N/A
Class S Shares                                      N/A         N/A
Standard & Poor's 500 Composite Index**
Lehman Brothers Government/Corporate
Bond***

</TABLE>



* The Fund's performance through ______________________ __, 19__ benefitted 
from the agreement of WM Advisors and its affiliates to limit the Fund's 
expenses.



** This index represents an unmanaged weighted index of 500 industrial,
transportation, utility and financial companies widely regarded by investors as
representative of the stock market.



*** This index is generally considered representative of the U.S. government and
corporate bond markets.
    


                                      -14-
<PAGE>   103
   
                              GROWTH & INCOME FUND

- -    OBJECTIVE. This Fund seeks to provide long-term capital growth. Current
     income is a secondary consideration.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in common
     stocks.



                               YEARLY PERFORMANCE*


                                   [BAR GRAPH]

<TABLE>
<CAPTION>
                  Calendar Year                          Annual Return(%)
                  -------------                          ----------------
                  <S>                                    <C>
                      1989                                    13.00
                      1990                                   -16.25
                      1991                                    32.69
                      1992                                     9.94
                      1993                                    11.06
                      1994                                     8.55
                      1995                                    20.87
                      1996                                    23.61
                      1997                                    31.24
                      1998
</TABLE>


During the periods shown above, the highest quarterly return was __% (for the
quarter ended ________ __, 19__), and the lowest was _____% (for the quarter
ended _________ __, 19__). [For the period ended March 31, 1999 the Funds return
was %].


                                PERFORMANCE TABLE*



<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR        PAST ONE   PAST FIVE   PAST TEN   LIFE OF FUND
PERIODS ENDING DECEMBER 31, 1998)        YEAR       YEARS       YEARS      (3/23/98)
<S>                                      <C>        <C>         <C>        <C>
Class I Shares                                      N/A         N/A
Class S Shares                                      N/A         N/A
Standard & Poor's 500 Composite Index**
</TABLE>



* The Fund's performance through ______________________ __, 19__ benefitted 
from the agreement of WM Advisors and its affiliates to limit the Fund's 
expenses.



** This index represents an unmanaged weighted index of 500 industrial,
transportation, utility and financial companies widely regarded by investors as
representative of the stock market.
    



                                      -15-
<PAGE>   104
   
                                 NORTHWEST FUND

- -    OBJECTIVE. This Fund seeks long-term growth of capital.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in common
     stocks of companies located or doing business in Alaska, Idaho, Montana,
     Oregon and Washington. The Fund's investments may include REPURCHASE
     AGREEMENTS and REAL ESTATE INVESTMENT TRUSTS (REITS).


                               YEARLY PERFORMANCE

                                   [BAR GRAPH]

<TABLE>
<CAPTION>
                  Calendar Year                          Annual Return(%)
                  -------------                          ----------------
                  <S>                                    <C>
                      1989                                    36.14
                      1990                                   -16.68
                      1991                                    60.49
                      1992                                     5.77
                      1993                                     3.82
                      1994                                     2.97
                      1995                                    22.24
                      1996                                    14.54
                      1997                                    44.47
                      1998
</TABLE>





During the periods shown above, the highest quarterly return was ___% (for the
quarter ended ________ __, 19__), and the lowest was ____% (for the quarter
ended ________ __, 19__).

                                PERFORMANCE TABLE

<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR        PAST ONE   PAST FIVE   PAST TEN   LIFE OF FUND
PERIODS ENDING DECEMBER 31, 1998)        YEAR       YEARS       YEARS
<S>                                      <C>        <C>         <C>        <C>
Class I Shares                           N/A        N/A         N/A        N/A
Class S Shares                           N/A        N/A         N/A        N/A
Standard & Poor's 500 Composite Index**
</TABLE>



* The Fund's performance through ______________________ __, 19__ benefitted 
from the agreement of WM Advisors and its affiliates to limit the Fund's 
expenses.



** This index represents an unmanaged weighted index of 500 industrial,
transportation, utility and financial companies widely regarded by investors as
representative of the stock market.
    



                                      -16-
<PAGE>   105
   
                                   GROWTH FUND

- -    OBJECTIVE. This Fund seeks long-term capital appreciation.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in common
     stocks, including foreign stocks, that, in the opinion of WM Advisors or 
     the sub-advisor, offer potential for growth. The Fund may also invest in
     commercial paper and preferred stock.



                               YEARLY PERFORMANCE*


                                   [BAR GRAPH]

<TABLE>
<CAPTION>
                  Calendar Year                          Annual Return(%)
                  -------------                          ----------------
                  <S>                                    <C>
                      1994                                        0
                      1995                                    32.33
                      1996                                    25.44
                      1997                                    10.88
                      1998
</TABLE>


During the periods shown above, the highest quarterly return was ___% (for the
quarter ended ________ __, 19__), and the lowest was ____% (for the quarter
ended _________ __, 19__).


                                PERFORMANCE TABLE*



<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR       PAST ONE  PAST FIVE  LIFE OF THE  SINCE CLASS S
PERIODS ENDING DECEMBER 31, 1998)       YEAR      YEARS      FUND         INCEPTION
                                                             (7/1/96)     (7/1/94)
<S>                                     <C>       <C>        <C>          <C>
Class I Shares                                    N/A                     N/A
Class S Shares                                    N/A        N/A
Standard & Poor's 500 Composite Index**
</TABLE>



* The Fund's performance through ______________________ __, 19__ benefitted 
from the agreement of WM Advisors and its affiliates to limit the Fund's 
expenses.



** This index represents an unmanaged weighted index of 500 industrial,
transportation, utility and financial companies widely regarded by investors as
representative of the stock market.
    



                                      -17-
<PAGE>   106
   
                              EMERGING GROWTH FUND

- -    OBJECTIVE. This Fund seeks long-term capital appreciation.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in equity
     securities, including FOREIGN SECURITIES, of companies with market
     capitalizations of less than $1.4 billion. The Fund may also invest in
     REPURCHASE AGREEMENTS and STRATEGIC TRANSACTIONS such as futures and
     options on futures.



                               YEARLY PERFORMANCE*


                                   [BAR GRAPH]


<TABLE>
<CAPTION>
                  Calendar Year                          Annual Return(%)
                  -------------                          ----------------
                  <S>                                    <C>
                      1992                                    22.47
                      1993                                    19.75
                      1994                                     3.40
                      1995                                    21.54
                      1996                                    35.93
                      1997                                    -1.50
                      1998
</TABLE>


During the periods shown above, the highest quarterly return was ____% (for the
quarter ended _____ __, 19__), and the lowest was ___% (for the quarter ended
________ __, 19__).


                                PERFORMANCE TABLE*



<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR      PAST ONE  PAST FIVE  LIFE OF FUND  SINCE CLASS S
PERIODS ENDING DECEMBER 31, 1998)      YEAR      YEARS      (SINCE        INCEPTION
                                                            7/25/96)      (7/1/94)
<S>                                    <C>       <C>        <C>           <C>
Class I Shares                                   N/A                      N/A
Class S Shares                                   N/A        N/A
Standard & Poor's 500 Composite Index**
Russell 2000 Index***
</TABLE>



* The Fund's performance through _______________ __, 19__ benefitted from the 
agreement of WM Advisors and its affiliates to limit the Fund's expenses.



** This index represents an unmanaged weighted index of 500 industrial,
transportation, utility and financial companies widely regarded by investors as
representative of the stock market. 



*** This index represents the smallest 2000 companies followed by Russell and is
used to measure the small-cap market.
    



                                      -18-
<PAGE>   107
   
                            INTERNATIONAL GROWTH FUND

- -    OBJECTIVE. This Fund seeks to provide long-term capital appreciation.


- -    PRINCIPAL INVESTMENT STRATEGIES. The Fund invests primarily in equity
     securities of foreign issuers, including issuers located in developing or
     emerging market countries. The Fund may also use derivatives such as
     FOREIGN CURRENCY EXCHANGE TRANSACTIONS and REPURCHASE AGREEMENTS.



                               YEARLY PERFORMANCE*


                                   [BAR GRAPH]

<TABLE>
<CAPTION>
                  Calendar Year                          Annual Return(%)
                  -------------                          ----------------
                  <S>                                    <C>
                      1992                                     7.28
                      1993                                    11.51
                      1994                                    12.39
                      1995                                    -4.01
                      1996                                    13.16
                      1997                                    15.50
                      1998
</TABLE>

                                                                
During the periods shown above, the highest quarterly return was ___% (for the
quarter ended ________ __, 19__), and the lowest was ____% (for the quarter
ended _________ __, 19__).


                                PERFORMANCE TABLE*



<TABLE>
<CAPTION>
AVERAGE ANNUAL TOTAL RETURNS (FOR     PAST ONE   PAST FIVE   LIFE OF FUND   SINCE CLASS S
PERIODS ENDING DECEMBER 31, 1998)     YEAR       YEARS       (SINCE         INCEPTION
                                                             7/25/96)       (7/1/94)
<S>                                   <C>        <C>         <C>            <C>
Class I Shares                                   N/A                        N/A
Class S Shares                                   N/A         N/A
Morgan Stanley Capital International
EAFE Index**
</TABLE>



* The Fund's performance through _______________ __, 19__ benefitted from the 
agreement of WM Advisors and its affiliates to limit the Fund's expenses.



** This index includes stock markets of Europe, Australia and the Far East 
weighted by capitalization and represents the equity markets of 18 countries.
    



                                      -19-
<PAGE>   108
                           SUMMARY OF PRINCIPAL RISKS

The value of your investment in a Fund or Portfolio changes with the value of
the investments held by that Fund or Portfolio. Many factors can affect that
value. Factors that may affect a particular Fund or Portfolio as a whole are
called "principal risks." They are summarized in this section. The chart at the
end of this section displays similar information. All Funds and Portfolios are
subject to principal risks. These risks can change over time, because the types
of investments made by the Funds and Portfolios can change over time.
Investments mentioned in this summary and described in greater detail under
"Description of the Funds" or "Common Investment Practices" appear in BOLD TYPE.
Those sections also include more information about the Funds, their investments
and the related risks.

   
- -    MARKET RISK. Each of the Funds and Portfolios is subject to market risk,
     which is the general risk of unfavorable changes in the market value of a
     Fund's portfolio securities. The Equity Funds, by investing in equity
     securities, such as common stock, preferred stock and Convertible
     Securities, are exposed to the risk of changes in the value of equity
     securities. Those risks include the risks of broader market declines as
     well as more specific risks affecting the issuer, such as management
     performance, financial leverage, industry problems and reduced demand for
     the issuer's goods or services.
    

   
- -    Another aspect of market risk is interest rate risk. As interest rates
     rise, your investment in a Fund or Portfolio is likely to be worth less
     because its income-producing equity or debt investments are likely to be
     worth less.
    

   
     Even Funds such as the Short Term High Quality Bond, U.S. Government
     Securities and Target Maturity 2002 Funds are subject to interest rate
     risk, even though they generally invest substantial portions of their
     assets in the highest quality debt securities, such as U.S. GOVERNMENT
     SECURITIES. Interest rate risk is generally greater, however, for Funds
     such as the Tax-Exempt Bond, Income, Growth & Income, High Yield and Growth
     Funds which invest significantly in LOWER-RATED SECURITIES or Comparable
     Unrated Securities.
    

   
     Interest rate risk is generally greater for Funds that invest in debt
     securities with longer maturities. This risk is usually compounded for
     Funds such as the Tax-Exempt Bond, California Municipal, Florida Insured
     Municipal, Income and U.S. Government Securities Funds that invest
     significantly in GOVERNMENT STRIPPED MORTGAGE-BACKED or OTHER ASSET-BACKED
     SECURITIES that may be prepaid. These securities have variable maturities
     that tend to lengthen when that is least desirable - when interest rates
     are rising. Increased market risk is also likely for Funds such as the
     Income, Short Term High Quality Bond and Target Maturity 2002 Funds that
     invest in debt securities paying no interest, such as ZERO-COUPON,
     Principal-Only and Interest-Only Securities.
    

   
- -    CREDIT RISK. Each of the Funds may be subject to credit risk to the extent
     it invests in debt securities. This is the risk that the issuer or the
     guarantor (or, in the case of the California Insured Intermediate Municipal
     Fund and the Florida Insured Municipal Fund, the insurer) of a debt
     security, or the counterparty to any of a Fund's portfolio transactions
     (including without limitation REPURCHASE AGREEMENTS, REVERSE REPURCHASE
     AGREEMENTS, securities loans and other over- the-counter transactions),
     will be unable or unwilling to make timely principal and/or interest
     payments, or to otherwise honor its obligations. Varying degrees of credit
     risk, often reflected in Credit Ratings, apply. Credit risk is particularly
     significant for Funds such as the Income, High Yield, Tax-Exempt Bond, Bond
     & Stock, Growth & Income, Growth and Emerging Growth Funds that invest
     significantly in LOWER-RATED SECURITIES. These securities and similar
     Unrated Securities (commonly known as "junk bonds") have
    


                                      -20-
<PAGE>   109
     speculative elements or are predominantly speculative credit risks. The
     Short Term High Quality Bond, Income, High Yield, Bond & Stock, Growth &
     Income, Growth, Emerging Growth and International Growth Funds which make
     FOREIGN INVESTMENTS denominated in U.S. dollars, are also subject to
     increased credit risk because of the difficulties of requiring foreign
     entities to honor their contractual commitments, and because a number of
     foreign governments and other issuers are already in default. The Money 
     Market Fund may also invest in U.S. dollar denominated foreign securities.

- -    CURRENCY RISK. Funds such as the Money Market, Short Term High Quality
     Bond, Income, High Yield, Bond & Stock, Growth & Income, Growth, Emerging
     Growth and International Growth Funds that invest in securities denominated
     in, and/or receive revenues in, FOREIGN CURRENCIES will be subject to
     currency risk. This is the risk that those currencies will decline in value
     relative to the U.S. Dollar, or, in the case of hedging positions, that the
     U.S. Dollar will decline in value relative to the currency hedged.

   
- -    FOREIGN INVESTMENT RISK. Each of the Funds with FOREIGN INVESTMENTS such as
     the Short Term High Quality Bond, Income, High Yield, Bond & Stock, Growth
     & Income, Growth, Emerging Growth and International Growth Funds, may
     experience more rapid and extreme changes in value than Funds with
     investments solely in securities of U.S. companies. This is because the
     securities markets of many foreign countries are relatively small, with a
     limited number of companies representing a small number of industries.
     Additionally, foreign securities issuers are usually not subject to the
     same degree of regulation as U.S. issuers. Reporting, accounting and
     auditing standards of foreign countries differ, in some cases
     significantly, from U.S. standards. Also, nationalization, expropriation or
     confiscatory taxation, currency blockage, political changes or diplomatic
     developments could adversely affect a Fund's investments in a foreign
     country. In the event of nationalization, expropriation or other
     confiscation, a Fund could lose its entire investment. Adverse developments
     in certain regions, such as Southeast Asia, may adversely affect the
     markets of other countries whose economies appear to be unrelated. The 
     Money Market Fund may also invest in U.S. dollar denominated foreign 
     securities.
    

- -    GEOGRAPHIC CONCENTRATION RISK. Funds such as the Northwest, California
     Municipal, California Insured Intermediate Municipal and the Florida
     Insured Municipal Funds that invest significant portions of their assets in
     concentrated geographic areas like the northwestern United States,
     California or Florida, generally have more exposure to regional economic
     risks than Funds making investments more broadly.

- -    LEVERAGING RISK. When a Fund is BORROWING money or otherwise leveraging its
     portfolio, the value of an investment in that Fund will be more volatile
     and all other risks will tend to be compounded. The Income, Short-Term High
     Quality Bond, U.S. Government Securities, California Municipal, California
     Insured Intermediate Municipal, Florida Insured Municipal, Growth,
     International Growth and Emerging Growth Funds may achieve leverage by
     using REVERSE REPURCHASE AGREEMENTS and/or DOLLAR ROLLS. The Municipal
     Funds, the Fixed-Income Funds, and the Growth & Income Fund may achieve
     leverage through the use of INVERSE FLOATING RATE INSTRUMENTS. Funds such
     as the


                                      -21-
<PAGE>   110
   
     California Money, California Insured Intermediate Municipal, Short Term
     High Quality Bond, Emerging Growth, Growth and International Growth may
     take on leveraging risk by investing collateral from Securities Loans, by
     using Derivatives and by BORROWING money to meet redemption requests.
    

   
- -    CONCENTRATION RISK. Most analysts believe that overall risk can be reduced
     through diversification, while concentration of investments in a small
     number of securities increases risk. Each of the California Money,
     California Municipal, California Insured Intermediate Municipal and Florida
     Insured Municipal Funds is Non-Diversified. This means they can invest a
     greater portion of their assets in a relatively small number of issuers and
     will have greater concentration of risk. Some of those issuers may present
     substantial credit or other risks.
    

   
- -    DERIVATIVES RISK. Each of the Funds, except the Money Funds, may, subject
     to the limitations and restrictions stated elsewhere in this Prospectus and
     the SAI, enter into STRATEGIC TRANSACTIONS involving derivatives such as
     forward contracts, futures contracts, options, swaps, caps, floors and
     collars which are financial contracts whose value depends on, or is derived
     from, the value of an underlying asset, reference rate or index. In
     addition to other risks such as the credit risk of the counterparty,
     derivatives involve the risk of mispricing or improper valuation and the
     risk that changes in the value of the derivative may not correlate
     perfectly with relevant assets, rates and indices.
    

   
- -    LIQUIDITY RISK. Liquidity risk exists when particular investments are
     difficult to purchase or sell, possibly preventing a Fund from selling out
     of these ILLIQUID SECURITIES at an advantageous price. All of the Funds may
     be subject to liquidity risk. Funds that make STRATEGIC TRANSACTIONS or
     FOREIGN INVESTMENTS, or that invest in securities involving substantial
     market and/or credit risk tend to involve greater liquidity risk. In
     addition, liquidity risk increases for Funds that hold RESTRICTED
     SECURITIES.
    


- -    MANAGEMENT RISK. Each Fund is subject to management risk because it is an
     actively managed investment portfolio. The Advisor or sub-advisor (if
     applicable) will apply its investment techniques and risk analyses in
     making investment decisions for the Funds or Portfolios, but there can be
     no guarantee that they will produce the desired results. In some cases
     derivatives and other investments may be unavailable or the Advisor or
     sub-advisor may choose not to use them under market conditions when their
     use would be beneficial to the Funds.

   
    

                                      -22-
<PAGE>   111
   


- -    SMALLER COMPANY RISK. Market risk and liquidity risk are particularly
     pronounced for stocks of companies with relatively Small Market
     Capitalizations. These companies may have limited product lines, markets or
     financial resources or they may depend on a few key employees. The Equity
     Funds, and the Emerging Growth Fund in particular, generally have the
     greatest exposure to this risk.



- -    TAX RISK. Each of the California Money Fund and the Municipal Funds is
     subject to the risk that some or all of the interest the Fund receives
     might become taxable by law or be determined by the Internal Revenue
     Service (or the relevant state tax authority) to be taxable. In this event,
     the value of the Fund's investments would likely fall, and some or all of
     the income distributions paid by the Fund might become taxable. In
     addition, some or all of the income distributions paid by these Funds may
     be subject to federal alternative minimum income tax.


- -    MONEY MARKET RISK. While the Money Funds are designed to be relatively low
     risk investments, they are not entirely free of risk. The Money Funds may
     not be able to maintain a net asset value of $1.00 per share. In addition,
     the Money Funds are still subject to the risk that the value of your
     investment may be eroded over time by inflation.

- -    NON-DIVERSIFICATION RISK. Each of the California Money, California 
     Municipal, California Insured Intermediate Municipal and Florida Insured
     Municipal Funds is a "non-diversified" fund which means that each of them
     may invest more of its assets in the securities of fewer issuers than other
     mutual funds. To the extent that a Fund invests significantly in the
     securities of a particular issuer, it may suffer greater losses if the 
     value of such issuer's securities declines.

- -    PORTFOLIO REALLOCATION RISK. From time to time, one or more of a
     Portfolio's underlying Funds may experience relatively large investments or
     redemptions due to reallocations or rebalancings by the Portfolios as
     recommended by the Advisor. These transactions will affect such Funds,
     since the Funds that experience redemptions as a result of reallocations or
     rebalancings may have to sell portfolio securities and Funds that receive
     additional cash will have to invest such cash. While it is impossible to
     predict the overall impact of these transactions over time, there could be
     adverse effects on portfolio management to the extent that the Funds may be
     required to sell securities or invest cash at times when they would not
     otherwise do so. These transactions could also have tax consequences if
     sales of securities resulted in gains and could also increase transaction
     costs. The Advisor is committed to minimizing such impact on the Funds to
     the extent it is consistent with pursuing the investment objectives of the
     Portfolios. The Advisor may nevertheless face conflicts in fulfilling its
     responsibilities. The Advisor will at all times monitor the impact on the
     Funds of transactions by the Portfolios.

- -    PORTFOLIO RISK. Each of the Portfolios allocates its assets among the Funds
     as determined by its Advisor and in accordance with the investment
     restrictions discussed above. As a result, the Portfolios share the risks
     of each of the Funds in which they invest, which are described above.

     In particular, the Portfolios may be subject to credit risk. For instance,
     the Strategic Growth Portfolio can invest up to 50% of its assets in each
     of the Growth, Growth & Income and Emerging Growth Funds and up to 25% of
     its assets in the High Yield Fund. Each of these Funds may invest
     significant amounts of its assets in lower-rated securities ("junk bonds").
     The Portfolios may also be exposed to FOREIGN INVESTMENT RISK through
    



                                      -23-
<PAGE>   112
   
     their investments in the Growth or Emerging Growth Funds. In choosing among
     the Portfolios investors should understand the risks of each of the Funds
     and the extent to which each Portfolio invests in each Fund.

     Investing in Funds through the Portfolios involves certain additional
     expenses and tax results that would not be present in a direct investment
     in the Funds. See "Dividends, Capital Gains and Taxes" for additional
     information about tax implications of investing in the Portfolios.

     Under certain circumstances, a Fund may determine to pay a redemption
     request by a Portfolio wholly or partly by a distribution in kind of
     securities from its portfolio, instead of cash. In such cases, the
     Portfolios may hold portfolio securities until the Advisor determines that
     it is appropriate to dispose of such securities.

     The officers, trustees, Advisor, Distributor and transfer agent of the
     Portfolios serve in the same capacities for the Funds. Conflicts may arise
     as these persons and companies seek to fulfill their fiduciary
     responsibilities to the Portfolios and the Funds.
    



                                      -24-
<PAGE>   113
   
                             PRINCIPAL RISKS BY FUND

The following chart summarizes the Principal Risks of each Fund. Risks not
marked for a particular Fund may, however, still apply to some extent to that
Fund at various times.


<TABLE>
<CAPTION>
FUND         MARKET     CREDIT     CURRENCY  FOREIGN    LEVERAGING   GEO-       DERIVA-    LIQUIDITY   MANAGEMENT
             RISK       RISK       RISK      INVEST-    RISK         GRAPHIC    TIVES      RISK        RISK
                                             MENT                    CONCEN-    RISK                                   
                                             RISK                    TRATION                                         
                                                                     RISK
<S>          <C>        <C>        <C>       <C>        <C>          <C>        <C>        <C>         <C>         
Money            X                                                                                                 
Market
Fund 

Tax-             X                                                                                                 
Exempt
Money
Market
Fund

California       X                                                   X                                             
Money Fund

Short            X          X         X          X           X                      X          X            X      
Term
High
Quality
Bond Fund

Target           X          X                    X           X                      X          X            X      
Maturity
2002 Fund

U.S.             X          X                    X           X                      X          X            X      
Government
Securities
Fund

Income           X          X                    X           X                      X          X            X      
Fund

High             X          X         X          X           X                      X          X            X      
Yield
Fund

Tax-             X          X                    X           X                      X          X            X      
Exempt
Bond Fund

California       X          X                    X           X           X          X          X            X 
Municipal
Fund
</TABLE>



<TABLE>
<CAPTION>
FUND           SMALLER     TAX      MONEY        NON-
               COMPANY     RISK     MARKET       DIVERSIFICATION
               RISK                 RISK         RISK
             
<S>            <C>         <C>      <C>          <C>
Money                                   X
Market
Fund

Tax-                          X         X            
Exempt
Money
Market
Fund

California                    X         X          X 
Money Fund

Short        
Term
High
Quality
Bond Fund

Target       
Maturity
2002 Fund

U.S.         
Government
Securities
Fund

Income       
Fund

High         
Yield
Fund

Tax-                          X
Exempt
Bond Fund

California                    X                    X
Municipal
Fund
</TABLE>
    



                                      -25-
<PAGE>   114
   

<TABLE>
<CAPTION>
FUND         MARKET     CREDIT     CURRENCY  FOREIGN    LEVERAGING   GEO-       DERIVA-    LIQUIDITY   MANAGEMENT
             RISK       RISK       RISK      INVEST-    RISK         GRAPHIC    TIVES      RISK        RISK
                                             MENT                    CONCEN-    RISK                             
                                             RISK                    TRATION                                    
                                                                     RISK
<S>          <C>        <C>        <C>       <C>        <C>          <C>        <C>        <C>         <C>    
California       X                                           X           X          X          X            X 
Insured
Intermediate
Municipal
Fund

Florida          X                                           X           X          X          X            X 
Insured
Municipal
Fund

Bond &           X          X         X          X                                  X          X            X
Stock Fund

Growth           X          X                                X                      X          X            X 
& Income
Fund

Northwest        X          X                                            X          X          X            X 
Fund

Growth           X          X         X          X           X                      X          X            X
Fund

Emerging         X          X         X          X           X                      X          X            X
Growth
Fund

International    X                    X          X           X                      X          X            X 
Growth Fund
</TABLE>


<TABLE>
<CAPTION>
FUND            SMALLER     TAX      MONEY       NON-
                COMPANY     RISK     MARKET      DIVERSIFICATION
                RISK                 RISK        RISK
             
<S>             <C>         <C>      <C>         <C>
California                     X                   X 
Insured
Intermediate
Municipal
Fund

Florida                        X                   X
Insured
Municipal
Fund

Bond &              X
Stock Fund

Growth               X
& Income
Fund

Northwest            X
Fund

Growth               X
Fund

Emerging             X
Growth
Fund

International        X
Growth Fund
</TABLE>
    


                                      -26-
<PAGE>   115
 
                         THE   WM   GROUP   OF   FUNDS
 
- --------------------------------------------------------------------------------
 
   
                            CONTENTS [TO BE UPDATED]
    
 
   
<TABLE>
<CAPTION>
                                                  PAGE
<S>                                               <C>
Fees and Expenses of the Funds                     28
Description of the Funds                           31
  Money Funds                                      31
  Fixed-Income Funds                               32
  Municipal Funds                                  33
  Equity Funds                                     35
  Common Investment Practices                      37
Ways to Set Up Your Account                        46
How Can I Invest in the Funds?                     47
Class I Shares                                     49
Class S Shares                                     49
Distribution of Income and Capital Gains           50
How Can I Sell Shares?                             50
How Can I Exchange My Shares?                      51
Dividends, Capital Gains and Taxes                 52
Organization                                       52
Financial Highlights                               55
</TABLE>
    
<PAGE>   116
 
- --------------------------------------------------------------------------------
   
                         FEES AND EXPENSES OF THE FUNDS
    
   
This table summarizes the fees and expenses that you may pay if you invest in a
Fund. The Examples on the next two pages are intended to help you compare the
cost of investing in the Funds with the costs of investing in other mutual
funds. The Examples assume that your investment has a 5% return each year, as
required by the Securities and Exchange Commission, and that the Fund's
operating expenses remain the same. Your actual costs may be higher or lower
than those in the Examples.
    
 
   
<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------
                                SHAREHOLDER FEES                            CLASS S
                   (fees paid directly from your investment)             SHARES (in %)
         ------------------------------------------------------------------------------------
<S>      <C>                                                             <C>              <C> <C>
         Maximum sales charge (load) imposed on purchases (as a
         percentage of offering price)                                        0.00
         ------------------------------------------------------------------------------------
         Maximum sales charge imposed on reinvested dividends                 0.00
         ------------------------------------------------------------------------------------
         Maximum deferred sales charge ("load") (as a percentage of
         original purchase price or redemption proceeds, as
         applicable)(2)                                                    5.00(1)
         ------------------------------------------------------------------------------------
         Exchange Fee                                                         0.00
         ------------------------------------------------------------------------------------
         (1) The maximum deferred sales charge is imposed on shares redeemed in the
         first year. For shares held longer than one year, the CDSC declines according
             to the schedules set forth under "Buying Class S Shares -- Contingent
             deferred sales charge" in this Prospectus.
         (2) A $10 fee may be charged for redemptions made by wire transfer.
- -------------------------------------------------------------------------------------------------
</TABLE>
    
 
                                       28
<PAGE>   117
   
<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------------
 
                                                                         ANNUAL FUND
                                                                     OPERATING EXPENSES
                                                                 (Expenses that are deducted
         CLASS I SHARES                                               from Fund assets)
         -----------------------------------------------------------------------------------------------------
                                                                           Total
                                                                        Annual Fund
                                               Management     Other      Operating       Expense        Net
                                                  Fee       Expenses     Expenses     Reimbursement   Expenses
         -----------------------------------------------------------------------------------------------------
<S>      <C>                                   <C>          <C>         <C>           <C>             <C>
         Money Market Fund(1)                         %           %            %              %            %
         -----------------------------------------------------------------------------------------------------
         Tax-Exempt Money Market Fund(1)
         -----------------------------------------------------------------------------------------------------
         California Money Fund(1)
         -----------------------------------------------------------------------------------------------------
         Short Term High Quality Bond Fund(1)
         -----------------------------------------------------------------------------------------------------
         U.S. Government Securities Fund(1)
         -----------------------------------------------------------------------------------------------------
         Income Fund
         -----------------------------------------------------------------------------------------------------
         High Yield Fund(1,2)
         -----------------------------------------------------------------------------------------------------
         Tax-Exempt Bond Fund
         -----------------------------------------------------------------------------------------------------
         California Municipal Fund(1)
         -----------------------------------------------------------------------------------------------------
         California Insured Intermediate
           Municipal Fund(1)
         -----------------------------------------------------------------------------------------------------
         Florida Insured Municipal Fund(1)
         -----------------------------------------------------------------------------------------------------
         Bond & Stock Fund
         -----------------------------------------------------------------------------------------------------
         Growth & Income Fund(1)
         -----------------------------------------------------------------------------------------------------
         Northwest Fund
         -----------------------------------------------------------------------------------------------------
         Growth Fund(1)
         -----------------------------------------------------------------------------------------------------
         Emerging Growth Fund(1)
         -----------------------------------------------------------------------------------------------------
         International Growth Fund
         -----------------------------------------------------------------------------------------------------
         (1) Reflects the Advisor's obligation to limit Total Annual Fund Operating Expenses as described on
             page    .
         (2) Because the High Yield Fund has not completed its first full fiscal year, the expenses for the
             5-year and 10-year periods are not applicable.
- --------------------------------------------------------------------------------------------------------------
 
<CAPTION>
- ---  -----------------------------------------
     EXAMPLES: You would pay
     the following expenses on a
     $10,000 investment assuming
     a 5% annual return and
     redemption at the end of each
     period:
     -----------------------------------------
 
     One     Three    Five      Ten
     Year    Years    Years    Years
     -----------------------------------------
<S>  <C>     <C>      <C>      <C>     <C> <C>
         -----------------------------------------
         -----------------------------------------
         -----------------------------------------
         -----------------------------------------
         -----------------------------------------
         -----------------------------------------
         -----------------------------------------
         -----------------------------------------
         -----------------------------------------
         -----------------------------------------
         -----------------------------------------
         -----------------------------------------
         -----------------------------------------
         -----------------------------------------
         -----------------------------------------
         -----------------------------------------
         -----------------------------------------
- --------------------------------------------------
</TABLE>
    
 
                                       29
<PAGE>   118
<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------
 
                                                                    ANNUAL FUND
                                                                OPERATING EXPENSES
                                                            (Expenses that are deducted
     CLASS S SHARES                                              from Fund assets)
     -----------------------------------------------------------------------------------------------------------
                                                Distribution
                                                    and
                                                  Service                  Total Fund
                                   Management     (12b-1)        Other     Operating       Expense        Net
                                      Fees        Fees(2)      Expenses     Expenses    Reimbursement   Expenses
     -----------------------------------------------------------------------------------------------------------
<S>  <C>                           <C>          <C>            <C>         <C>          <C>             <C>
     Money Market Fund(1)                           1.00%                                       %             %
     -----------------------------------------------------------------------------------------------------------
     Tax-Exempt Money Market
     Fund(1)                                        1.00
     -----------------------------------------------------------------------------------------------------------
     California Money Fund(1)                       1.00
     -----------------------------------------------------------------------------------------------------------
     Short Term High Quality Bond
     Fund(1)                                        1.00
     -----------------------------------------------------------------------------------------------------------
     U.S. Government Securities
     Fund(1)                                        1.00
     -----------------------------------------------------------------------------------------------------------
     Income Fund                                    1.00
     -----------------------------------------------------------------------------------------------------------
     High Yield Fund(1,4)                           1.00
     -----------------------------------------------------------------------------------------------------------
     Tax-Exempt Bond Fund                           1.00
     -----------------------------------------------------------------------------------------------------------
     California Municipal Fund(1)                   1.00
     -----------------------------------------------------------------------------------------------------------
     California Insured
     Intermediate Municipal
     Fund(1)                                        1.00
     -----------------------------------------------------------------------------------------------------------
     Florida Insured Municipal
     Fund(1)                                        1.00
     -----------------------------------------------------------------------------------------------------------
     Bond & Stock Fund                              1.00
     -----------------------------------------------------------------------------------------------------------
     Growth & Income Fund(1)                        1.00
     -----------------------------------------------------------------------------------------------------------
     Northwest Fund                                 1.00
     -----------------------------------------------------------------------------------------------------------
     Growth Fund(1)                                 1.00
     -----------------------------------------------------------------------------------------------------------
     Emerging Growth Fund(1)                        1.00
     -----------------------------------------------------------------------------------------------------------
     International Growth Fund                      1.00
     -----------------------------------------------------------------------------------------------------------
     (1) Reflects the Advisor's obligation to limit Total Annual Fund Operating Expenses as described on page
         .
     (2) 0.25% of the 12b-1 fees shown represent servicing fees which are paid to the Distributor. Long-term
     Class S shareholders may pay more than the salese -han the sales charges paid by long-term Class A
         shareholders.
     (3) Class S shares convert to Class A shares after eight years, accordingly the expense amounts for years
     nine and ten are based on Class A shares.A s-ares.
     (4) Because the High Yield Fund has not completed its first full fiscal year, the expenses for the 5-year
     and 10-year periods are not applicable.
- ----------------------------------------------------------------------------------------------------------------
 
<CAPTION>
- ---------------------------------  -----------------------------------------------------------------------------
                                           EXAMPLES: You would pay the following
                                           expenses on a $10,000 investment
                                           assuming a 5% annual return and either
                                           1) redemption at the end of each period or
     CLASS S SHARES                        2) no redemption:
     ----------------------------  -------------------------------------------------------------------------
 
                                                 (1)                                (2)
                                    One    Three   Five      Ten       One    Three   Five      Ten
                                   Year    Years   Years   Years(3)   Year    Years   Years   Years(3)
     ----------------------------  -------------------------------------------------------------------------
<S>                                <C>     <C>     <C>     <C>        <C>     <C>     <C>     <C>        <C> <C>
     Money Market Fund(1)
     -----------------------------------------------------------------------------------------------------------
     Tax-Exempt Money Market
     Fund(1)
     -----------------------------------------------------------------------------------------------------------
     California Money Fund(1)
     -----------------------------------------------------------------------------------------------------------
     Short Term High Quality Bond
     Fund(1)
     -----------------------------------------------------------------------------------------------------------
     U.S. Government Securities
     Fund(1)
     -----------------------------------------------------------------------------------------------------------
     Income Fund
     -----------------------------------------------------------------------------------------------------------
     High Yield Fund(1,4)                           n/a       n/a                      n/a       n/a
     -----------------------------------------------------------------------------------------------------------
     Tax-Exempt Bond Fund
     -----------------------------------------------------------------------------------------------------------
     California Municipal Fund(1)
     -----------------------------------------------------------------------------------------------------------
     California Insured
     Intermediate Municipal
     Fund(1)
     -----------------------------------------------------------------------------------------------------------
     Florida Insured Municipal
     Fund(1)
     -----------------------------------------------------------------------------------------------------------
     Bond & Stock Fund
     -----------------------------------------------------------------------------------------------------------
     Growth & Income Fund(1)
     -----------------------------------------------------------------------------------------------------------
     Northwest Fund
     -----------------------------------------------------------------------------------------------------------
     Growth Fund(1)
     -----------------------------------------------------------------------------------------------------------
     Emerging Growth Fund(1)
     -----------------------------------------------------------------------------------------------------------
     International Growth Fund
     -----------------------------------------------------------------------------------------------------------
     (1) Reflects the Advisor's obligation to limit Total Annual Fund Operating Expenses as described on page
         .
     (2) 0.25% of the 12b-1 fees shown represent servicing fees which are paid to the Distributor. Long-term
     Class S shareholders may pay more than the salese -han the sales charges paid by long-term Class A
         shareholders.
     (3) Class S shares convert to Class A shares after eight years, accordingly the expense amounts for years
     nine and ten are based on Class A shares.A s-ares.
     (4) Because the High Yield Fund has not completed its first full fiscal year, the expenses for the 5-year
     and 10-year periods are not applicable.
- ----------------------------------------------------------------------------------------------------------------
</TABLE>
 
                                       30
<PAGE>   119
 
   
                            DESCRIPTION OF THE FUNDS
    
 
   
This section provides a more complete description of the investment strategies
and risks of each Fund. The "Common Investment Practices" section that follows
provides additional information about the principal investment strategies of the
Funds and identifies the Funds that may engage in such practices to a
significant extent. You can find additional descriptions of the Funds'
strategies and risks in the Statement of Additional Information ("SAI"). Except
for policies explicitly identified as "fundamental" in this Prospectus or the
SAI, the investment objectives and investment policies set forth in this
Prospectus and the SAI are not fundamental and may be changed at any time
without shareholder consent. Except as otherwise indicated, all policies and
limitations are considered at the time of purchase; the sale of securities is
not required in the event of a subsequent change in valuation or other
circumstances.
    
 
MONEY FUNDS
 
   
The Money Funds invest only in U.S. dollar-denominated short-term, money market
securities. They will only purchase obligations issued or guaranteed by the U.S.
Government, its agencies or instrumentalities ("U.S. Government Securities") or
securities that are, or have issuers that are,
    
 
   
- - rated by at least two nationally recognized statistical rating organizations
  ("NRSROs"), such as Standard & Poor's ("S&P") or Moody's Investors Service,
  Inc. ("Moody's"), in one of the two highest rating categories for short-term
  debt securities,
    
 
   
- - rated in one of the two highest categories for short-term debt by the only
  NRSRO that has issued a rating, or
    
 
   
- - if not so rated, are determined to be of comparable quality.
    
 
   
A description of the rating systems of S&P and Moody's is contained in Appendix
A to this Prospectus and in the SAI. At the time of investment, no security
purchased by a Money Fund (except U.S. Government Securities subject to
repurchase agreements and variable rate demand notes) will have a maturity
exceeding 397 days, and each Money Fund's average portfolio maturity will not
exceed 90 days. The Money Funds will attempt to maintain a stable net asset
value ("NAV") of $1.00, but there can be no assurance that any Money Fund will
be able to do so.
    
 
MONEY MARKET FUND.  To accomplish its objective, the Money Market Fund invests
solely in money market instruments that are selected from the following six
general categories:
 
   
- - U.S. Government Securities;
    
 
   
- - short-term commercial notes (including asset-backed securities) issued
  directly by U.S. and foreign businesses, banking institutions, financial
  institutions (including brokerage, finance and insurance companies) and state
  and local governments and municipalities to finance short-term cash needs;
    
 
   
- - obligations of U.S. and foreign banks with assets of more than $500 million;
    
 
   
- - securities issued by foreign governments, their agencies or instrumentalities
  or by supranational entities;
    
 
   
- - short-term corporate obligations rated in one of the two highest rating
  categories by Moody's or S&P; and
    
 
   
- - repurchase agreements.
    
 
   
TAX-EXEMPT MONEY MARKET FUND.  The Tax-Exempt Money Market Fund invests
primarily in a diversified selection of Municipal Obligations, the income from
which is exempt from federal income tax. "Municipal Obligations" include fixed
income obligations issued by states, counties, cities or other governmental
bodies that generate income exempt from federal income tax. Short-term Municipal
Obligations may include, but are not limited to, tax anticipation notes, bond
anticipation notes, revenue anticipation notes and project notes, or other forms
of short-term municipal loans and obligations. Under normal market conditions,
the Fund will not invest more than 20% of its assets in obligations that pay
interest subject to alternative minimum tax ("AMT-Subject Bonds").
    
 
   
For temporary defensive purposes, the Fund may invest more than 20% of its
assets in instruments eligible for purchase by the Money Market Fund, which may
produce income that is not exempt from federal income taxes.
    
 
The Fund may also invest in variable rate demand obligations, stand-by
commitments, when-issued securities and forward commitments.
 
CALIFORNIA MONEY FUND.  To accomplish its objective, the California Money Fund
invests in a portfolio of
 
                                       31
<PAGE>   120
 
   
Municipal Obligations. It is a fundamental policy of the Fund to invest, under
normal market conditions, at least 80% of its total assets in Municipal
Obligations. The Fund normally invests at least 80% of its total assets in
Municipal Obligations issued by the State of California and its political
subdivisions and certain other governmental issuers such as the Commonwealth of
Puerto Rico ("California Municipal Obligations"), which produce income that is
exempt from California state personal income tax. The Fund may also invest in
AMT-Subject Bonds.
    
 
The Fund may also invest in variable rate demand obligations, stand-by
commitments, when-issued securities and forward commitments.
 
   
For temporary defensive purposes, the Fund may invest more than 20% of its
assets in instruments eligible for purchase by the Money Market Fund, which may
produce income that is not exempt from federal income taxes or California
personal income tax.
    
 
FIXED-INCOME FUNDS
 
   
SHORT TERM HIGH QUALITY BOND FUND.  The Short Term High Quality Bond Fund
invests primarily in short-term bonds and other debt securities. Under normal
market conditions the Fund maintains a dollar-weighted average portfolio
maturity of three years or less. The Fund may, however, hold individual
securities with remaining maturities of more than three years. For purposes of
the weighted average maturity calculation, a mortgage instrument's average life
will be considered to be its maturity, and the date on which the interest rate
of a floating rate security can next change will be used in place of its
maturity date.
    
 
The Fund will invest substantially all of its assets in debt securities that, at
the time of purchase, are rated in one of the top four rating categories by one
or more NRSROs or, if unrated, are judged to be of comparable quality by the
Advisor ("investment grade" securities). All debt securities purchased by the
Fund will be investment grade at the time of purchase. Under normal market
conditions, the Fund will invest at least 65% of its total assets in U.S.
Government securities, corporate debt obligations or mortgage-related securities
rated in one of the two highest categories by an NRSRO or determined by the
Advisor to be of comparable quality.
 
The Fund may invest in obligations issued or guaranteed by domestic and foreign
governments and government agencies and instrumentalities and in high-grade
corporate debt obligations, such as bonds, debentures, notes, equipment lease
and trust certificates, mortgage-backed securities, collateralized mortgage
obligations and asset-backed securities.
 
The Fund may invest up to 10% of its assets in foreign fixed-income securities,
primarily bonds of foreign governments or their political subdivisions, foreign
companies and supranational organizations, including non-U.S. dollar-denominated
securities and U.S. dollar-denominated debt securities issued by foreign issuers
and foreign branches of U.S. banks. Investment in foreign securities is subject
to special risks. The Fund may invest up to 5% of its assets in preferred stock.
The Fund may also invest in high-quality, short-term obligations (with
maturities of 12 months or less). The Fund may engage in certain options
transactions, enter into financial futures contracts and related options for the
purpose of portfolio hedging and enter into currency forwards or futures
contracts and related options for the purpose of currency hedging. The Fund may
invest in certain illiquid investments, such as privately placed obligations,
including restricted securities. The Fund may invest up to 10% of its assets in
securities of unaffiliated mutual funds. The Fund may borrow money or enter into
reverse repurchase agreements or dollar roll transactions in the aggregate up to
33 1/3% of its total assets. The Fund may invest up to 25% of its total assets
in asset-backed securities, which represent a participation in, or are secured
by and payable from, a stream of payments generated by particular assets, most
often a pool of similar assets.
 
U.S. GOVERNMENT SECURITIES FUND.  To accomplish its objective, the U.S.
Government Securities Fund invests primarily in a selection of obligations of
the U.S. Government and its agencies. The Fund may also invest in collateralized
mortgage obligations or repurchase agreements which are secured by those types
of obligations. It is a fundamental policy of the Fund to invest only in the
following types of securities: (1) U.S. Government securities, including
mortgage-backed securities; (2) obligations secured by the full faith and credit
of the U.S. Government or its instrumentalities; and (3) collateralized mortgage
obligations and repurchase agreements which are secured by obligations
identified in (1) and (2) above. The Fund may borrow up to 5% of its total net
assets for
 
                                       32
<PAGE>   121
 
emergency, non-investment purposes and may enter into dollar roll transactions.
 
   
INCOME FUND.  The Income Fund invests most of its assets in:
    
 
   
- - debt and convertible debt securities;
    
 
   
- - U.S. Government Securities, including mortgage-backed securities issued by the
  Government National Mortgage Association ("GNMA"), Federal National Mortgage
  Association ("FNMA"), and Federal Home Loan Mortgage Corporation ("FHLMC") or
  similar government agencies;
    
 
   
- - obligations of U.S. banks that belong to the Federal Reserve System;
    
 
   
- - preferred stocks and convertible preferred stocks;
    
 
   
- - the highest grade commercial paper as rated by S&P or Moody's; and
    
 
   
- - deposits in U.S. banks.
    
 
The Fund may also invest in securities denominated in foreign currencies and
likewise receive interest, dividends and sale proceeds in foreign currencies.
The Fund may engage in foreign currency exchange transactions for hedging
purposes in connection with the purchase and sale of foreign securities or to
protect against changes in the value of specific securities held by the Fund,
and may purchase and sell currencies on a spot (cash) basis, enter into forward
contracts to purchase or sell foreign currencies at a future date, and buy and
sell foreign currency futures contracts. The Fund may also borrow up to 5% of
its total net assets for emergency, non-investment purposes, and may enter into
dollar roll transactions. The Fund may purchase securities of issuers which deal
in real estate or securities which are secured by interests in real estate, and
it may acquire and dispose of real estate or interests in real estate acquired
through the exercise of its rights as a holder of debt obligations secured by
real estate or interests therein. The Fund may also purchase and sell interest
rate futures and options. The Fund may invest up to 35% of its assets in
lower-rated fixed-income securities (sometimes called "junk bonds").
 
   
HIGH YIELD FUND.  The High Yield Fund invests, under normal market conditions,
at least 65% of its assets in a diversified portfolio of fixed income securities
(including debt securities, convertible securities and preferred stocks) rated
lower than BBB by S&P or Baa by Moody's or of equivalent quality as determined
by the Advisor. The remainder of the Fund's assets may be invested in any other
securities the Advisor believes are consistent with the Fund's objective,
including higher rated fixed-income securities, common stocks and other equity
securities. The Fund may also invest in securities of foreign issuers and engage
in hedging strategies involving options.
    
 
MUNICIPAL FUNDS
 
   
Each of the Municipal Funds and the California Money Fund, invests most of its
assets in Municipal Obligations. Current federal income tax laws limit the types
and volume of bonds qualifying for the federal income tax exemption of interest,
which may have an effect on the ability of the Fund to purchase sufficient
amounts of tax-exempt securities.
    
 
   
TAX-EXEMPT BOND FUND.  The Tax-Exempt Bond Fund will invest at least 80% of its
assets in Municipal Obligations, including inverse floating rate obligations,
under normal market conditions.
    
 
   
The Fund specifically limits these investments to: municipal bonds, municipal
notes and securities of unaffiliated tax-exempt mutual funds. The Fund also may
invest up to 35% of its assets in lower-rated securities.
    
 
In adverse markets, the Fund may seek to protect its investment position by
investing up to 50% of its portfolio in taxable short-term investments such as:
 
   
- - U.S. Government Securities;
    
 
   
- - commercial paper rated in the highest grade by either S&P or Moody's;
    
 
   
- - obligations of U.S. banks;
    
 
   
- - time or demand deposits in U.S. banks; and
    
 
   
- - repurchase agreements relating to municipal securities or any of the foregoing
  taxable instruments.
    
 
   
Interest income from these short-term investments that is distributed to you may
be taxable.
    
 
The Fund may also purchase and sell interest rate futures and options. The Fund
may also invest in AMT-Subject Bonds, although, so long as its name includes the
words "tax-exempt" and the SEC so requires, such investments will be limited to
20% of its total assets.
 
   
CALIFORNIA MUNICIPAL FUND.  The California Municipal Fund invests primarily in
intermediate- and long-term California municipal obligations which are mu-
    
 
                                       33
<PAGE>   122
 
   
nicipal obligations that generate interest that is exempt from California state
personal income tax. It is a fundamental policy of the Fund that, under normal
market conditions, at least 80% of the Fund's total assets will be invested in
California Municipal Obligations. The Fund may invest in AMT-Subject Bonds.
    
 
The Fund will invest primarily in investment grade Municipal Obligations. The
Fund may also invest in inverse floating obligations, which will generally be
more volatile than other types of Municipal Obligations.
 
   
The Fund may, under normal circumstances, invest up to 20% of its assets in:
    
 
   
- - Municipal Obligations that are not exempt from California personal income tax;
    
 
   
- - short-term Municipal Obligations;
    
 
   
- - taxable cash equivalents, including short-term U.S. Government Securities,
  certificates of deposit and bankers' acceptances, commercial paper rated
  Prime-1 by Moody's or A-1+ or A-1 by S&P, repurchase agreements (collectively
  "Short-Term Instruments"); and
    
 
   
- - securities of money market mutual funds (subject to the limitations set forth
  under "Common Investment Practices").
    
 
The Fund may, for temporary defensive purposes, invest in these securities
without limitation. As a non-diversified investment company under the 1940 Act,
the Fund may invest a larger portion of its assets in the securities of a small
number of issuers.
 
   
CALIFORNIA INSURED INTERMEDIATE MUNICIPAL FUND. The California Insured
Intermediate Municipal Fund will invest primarily in insured intermediate-term
California Municipal Obligations. It is a fundamental policy of the Fund that it
will invest at least 80% of the value of its total assets in insured California
Municipal Obligations (except when maintaining a temporary defensive position).
The weighted average effective maturity of the securities in which the Fund
invests will be ten years or less, and the maximum effective maturity (the
maturity date without regard to call provisions, except that for pooled single
family mortgage securities effective maturity is the average life of the
underlying mortgage obligations) of any Municipal Obligation in which the Fund
invests will be fifteen years.
    
 
   
All of the Municipal Obligations in which the Fund will invest, taking into
account any insurance, are investment grade securities. For more information,
see "About Bond Insurance" below.
    
 
   
The Fund may invest without limitation in AMT-Subject Bonds.
    
 
   
Under normal market conditions, the Fund may invest up to 20% of its assets in:
    
 
   
- - uninsured Municipal Obligations;
    
 
   
- - Municipal Obligations that are not exempt from California personal income tax;
  and
    
 
   
- - short-term Municipal Obligations and taxable cash equivalents, including
  Short-Term Instruments and securities of unaffiliated money market mutual
  funds (subject to the limitations set forth under "Common Investment
  Practices") and may, for temporary defensive purposes, invest in these
  securities without limitation.
    
 
   
In addition, the Fund may invest in inverse floating rate obligations. The Fund
may engage in hedging transactions through the use of financial futures and
options thereon, purchase and sell securities on a when-issued or forward
commitment basis, invest in mortgage-backed securities, enter into repurchase
agreements, invest in stand-by commitments and lend portfolio securities. The
Fund may invest in floating rate and variable rate obligations, including
participation interests therein (referred to collectively as "Hedging
Transactions").
    
 
   
FLORIDA INSURED MUNICIPAL FUND.  The Florida Insured Municipal Fund will invest
primarily in insured, intermediate- and long-term Municipal Obligations, issued
by the State of Florida and its political subdivisions. The Fund will invest
primarily in investment-grade Municipal Obligations. It is a fundamental policy
of the Fund that it will invest at least 80% of the value of its total assets
(except when maintaining a temporary defensive position) in insured Florida
Municipal Obligations. See "About Bond Insurance" below. The Fund may invest
without limitation in AMT-Subject Bonds. The Fund may also invest in inverse
floating rate obligations.
    
 
   
The Fund may invest up to 20% of its total assets in:
    
 
   
- - uninsured Municipal Obligations;
    
 
   
- - Municipal Obligations that are not exempt from Florida intangible personal
  property tax; and
    
 
                                       34
<PAGE>   123
 
   
- - Short-Term Instruments and securities of unaffiliated money market mutual
  funds and, for temporary defensive purposes, invest in these securities
  without limitation.
    
 
As a non-diversified investment company under the 1940 Act, the Fund may invest
a larger portion of its assets in the securities of a small number of issuers.
See "Common Investment Practices -- Non-Diversified Status."
 
   
Florida does not impose an income tax on individuals. Distributions of
investment income and capital gains by the Fund will be subject to Florida
corporate income taxes. Florida imposes a tax on intangible personal property
owned by Florida residents. Based on a ruling the Fund has received from the
Florida Department of Revenue, if the Fund's assets consist, on the last
business day of the calendar year, solely of assets exempt from Florida
intangible personal property tax, shares of the Fund owned by Florida residents
will be exempt from Florida intangible personal property tax. Assets exempt from
Florida intangible personal property tax include Florida Municipal Obligations;
obligations of the U.S. Government or its agencies; and cash.
    
 
ABOUT BOND INSURANCE.  The insured Municipal Obligations in which the California
Insured Intermediate Municipal and Florida Insured Municipal Funds will invest
and the other Municipal Funds may invest are insured under insurance policies
that relate to the specific Municipal Obligation in question ("Specific Issue
Insurance") and that are issued by an insurer having a claims-paying ability
rated AAA by S&P or Aaa by Moody's. Specific Issue Insurance is generally
non-cancelable and will continue in force so long as the Municipal Obligations
are outstanding and the insurer remains in business.
 
The insured Municipal Obligations are insured as to the scheduled payment of all
installments of principal and interest as they fall due. Such insurance does not
insure against market risk and therefore does not guarantee the market value of
the obligations in a Fund's investment portfolio or a Fund's NAV. Such market
value and NAV will continue to fluctuate in response to fluctuations in interest
rates. A Fund's investment policy requiring investment in insured Municipal
Obligations will not affect the Fund's ability to hold its assets in cash or to
invest in escrow-secured and defeased bonds or in certain short-term tax-exempt
obligations as set forth herein, or affect its ability to invest in uninsured
taxable obligations for temporary or liquidity purposes or on a defensive basis.
 
EQUITY FUNDS
 
   
BOND & STOCK FUND.  Under normal market conditions at least 25% of the Bond &
Stock Fund's assets will be invested in fixed-income securities, including
preferred stocks and that portion of the value of convertible securities which
is not attributable to a conversion feature. The Fund may invest in money market
instruments for temporary or defensive purposes. The Fund may invest in
fixed-income securities of any maturity, including mortgage-backed securities,
U.S. Government Securities and asset-backed securities, and may also invest up
to 35% of its assets, in below investment grade bonds (sometimes called junk
bonds). The Fund may purchase or sell U.S. Government Securities or
collateralized mortgage obligations on "when-issued" or "delayed-delivery" basis
in an aggregate of up to 20% of the market value of its total net assets. The
Fund may invest up to 25% of its assets in real estate investment trusts, known
as "REITs." The Fund may write (sell) covered call options. The Fund may invest
up to 25% of its assets in U.S. dollar-denominated securities of foreign
issuers.
    
 
   
GROWTH & INCOME FUND.  The Growth & Income Fund invests primarily in common
stocks. The Fund may also invest in money market instruments for temporary or
defensive purposes. To limit risk, repurchase agreements maturing in more than
seven days will not exceed 10% of the Fund's total assets. The Fund may invest
up to 25% of its assets in REITs. The Fund may invest in fixed-income securities
of any maturity, including mortgage-backed securities, and may invest up to 35%
of its assets in below investment grade fixed-income securities.
    
 
The Fund may purchase or sell U.S. Government securities or collateralized
mortgage obligations on a "when-issued" or "delayed-delivery" basis in an
aggregate up to 20% of the market value of its total assets minus total
liabilities (except for the obligations created by these commitments). The Fund
may write (sell) covered call options. The Fund may invest up to 25% of its
assets in U.S. dollar denominated securities of foreign issuers.
 
   
NORTHWEST FUND.  The Northwest Fund invests in common stocks of companies
located or doing busi-
    
 
                                       35
<PAGE>   124
 
ness in the Northwest states of Alaska, Idaho, Montana, Oregon and Washington.
Under normal circumstances, at least 65% of the Fund's total assets will be
invested in companies whose principal executive offices are located in one of
those states.
 
The Fund is permitted to invest in money market instruments for temporary or
defensive purposes. The Fund may invest up to 25% of its assets in REITs, and
may write (sell) covered call options.
 
Because the Fund concentrates its investments in companies located or doing
business in the Northwest, the Fund is not intended as a complete investment
program, and could be adversely impacted by economic trends within the
five-state area.
 
   
GROWTH FUND.  The Growth Fund invests primarily in common stocks believed to
have significant appreciation potential. The Fund also may invest in debt
securities, bonds, convertible bonds, preferred stock and convertible preferred
stock, including up to 35% of its assets in non-investment-grade debt
securities.
    
 
The Fund may invest up to 25% of its assets in foreign securities, usually
foreign common stocks, and up to 5% of its assets in securities of companies in
(or governments of) developing or emerging countries (sometimes referred to as
"emerging markets"). The Fund may also engage in certain options transactions,
enter into financial futures contracts and related options for the purpose of
portfolio hedging and enter into currency forwards or futures contracts and
related options for the purpose of currency hedging.
 
   
EMERGING GROWTH FUND.  The Emerging Growth Fund invests primarily in equity
securities of companies with market capitalization of less than $1.4 billion at
the time of purchase. In addition to common stock, the Fund's equity securities
may include convertible bonds, convertible preferred stock and warrants to
purchase common stock, as well as cash and cash equivalents. The Fund may invest
up to 25% of its assets in securities of foreign issuers and up to 5% of its
assets in securities in developing or emerging countries. The Fund may invest up
to 35% of its assets in non-investment-grade debt securities if the Advisor
believes that doing so will be consistent with the goal of capital appreciation.
    
 
   
INTERNATIONAL GROWTH FUND.  The International Growth Fund invests primarily in
equity securities of issuers located in foreign countries that the Fund's
sub-advisor believes present attractive investment opportunities. Criteria for
determining the appropriate distribution of investments among various countries
and regions include prospects for relative economic growth, expected levels of
inflation, government policies influencing business conditions, the outlook for
currency relationships and the range of investment opportunities available to
international investors. The relative strength or weakness of a particular
country's currency or economy may dictate whether securities of issuers located
in such country will be purchased or sold. The Fund may invest without limit in
the securities of issuers located in any one country (except as provided below
with respect to emerging markets countries). The Fund will emphasize established
companies, although it may invest in companies of varying sizes as measured by
assets, sales and capitalization.
    
 
The Fund invests in common stock and may invest in other securities with equity
characteristics, such as trust or limited partnership interests, preferred
stock, rights and warrants. The Fund may also invest in convertible securities.
The Fund invests in securities listed on foreign or domestic securities
exchanges and securities traded in foreign or domestic over-the-counter markets,
and may invest in restricted or unlisted securities.
 
The Fund intends to stay fully invested in the securities described above to the
extent practical. Fund assets may be invested in short-term debt instruments to
meet anticipated day-to-day operating expenses, and for temporary defensive
purposes. In addition, when the Fund experiences large cash inflows, the Fund
may hold short-term investments until desirable equity securities become
available. These short-term instruments are generally rated A or higher by
Moody's or S&P, or, if unrated, of comparable quality in the opinion of the
Fund's sub-advisor.
 
The Fund may invest up to 30% of its assets in the securities of companies in or
governments of developing or emerging markets, provided that no more than 5% of
the Fund's total assets are invested in any one emerging markets country. For
temporary defensive purposes, the Fund may invest a major portion of its assets
in securities of U.S. issuers. Furthermore, the Fund may invest up to 5% of its
total assets in investment grade corporate debt securities having maturities
longer than one year, including Euro-currency instruments and securities.
 
                                       36
<PAGE>   125
 
   
COMMON INVESTMENT PRACTICES
    
 
   
The next several pages contain more detailed information about types of
securities in which the Funds may invest, and strategies which the Advisor or
the respective sub-advisor may employ in pursuit of that Fund's investment
objective and a summary of risks and restrictions associated with these
securities and investment practices. For more information, see the SAI.
    
 
BORROWING.  The Funds may borrow money from banks solely for temporary or
emergency purposes, subject to various limitations. If a Fund borrows money, its
share price may be subject to greater fluctuation until the borrowing is paid
off. For the California Money, Short Term High Quality Bond, California
Municipal, California Insured Intermediate Municipal, Florida Insured Municipal,
Growth, International Growth and Emerging Growth Funds, such borrowings may not
exceed 30% of total assets. The Money Market, Tax-Exempt Money Market, U.S.
Government Securities, Income, High Yield, Tax-Exempt Bond, Bond & Stock, Growth
& Income and Northwest Funds may borrow up to 5% of total assets for emergency
purposes. In addition, the Money Market and Tax-Exempt Money Market Funds may
borrow up to 33 1/3% of total assets to meet redemption requests. The Short Term
High Quality Bond Fund is prohibited from borrowing money or entering into
reverse repurchase agreements or dollar roll transactions (described below) in
the aggregate in excess of 33 1/3% of the Fund's total assets (after giving
effect to such borrowings and transactions). If a Fund makes additional leverage
investments while borrowings are outstanding, this will have the effect of
leveraging the Fund. The California Money, Short Term High Quality Bond,
California Municipal, California Insured Intermediate Municipal, Florida Insured
Municipal, Growth, International Growth and Emerging Growth Funds may not
purchase additional securities when borrowings, including, for each such Fund
other than the Short Term High Quality Bond Fund, reverse repurchase agreements,
exceed 5% of total assets. Leveraging will magnify declines as well as increases
in the NAV of a Fund's shares and in the yield on a Fund's investments. Each of
the foregoing percentage limitations on borrowings is a fundamental policy of
the respective Funds.
 
The Income, Short Term High Quality Bond and U.S. Government Securities Funds
may enter into DOLLAR ROLLS. A Fund enters into a DOLLAR ROLL by selling
securities for delivery in the current month and simultaneously contracts to
repurchase, typically in 30 or 60 days, substantially similar (same type, coupon
and maturity) securities on a specified future date, which, under the Investment
Company Act of 1940, as amended (the "1940 Act") may be considered borrowings
from the counterparty and may produce similar leveraging effects. The proceeds
of the initial sale of securities in the dollar roll transactions, for example,
may be used to purchase long-term securities which will be held during the roll
period. To the extent that the proceeds of the initial sale of securities are
invested in bonds, the Fund will be subject to market risk on these bonds as
well as similar risk with respect to the securities the Fund is required to
repurchase. See "Fixed-Income Obligations" below.
 
Each of the Short Term High Quality Bond, California Municipal, California
Insured Intermediate Municipal, Florida Insured Municipal, Growth, International
Growth and Emerging Growth Funds may engage in REVERSE REPURCHASE AGREEMENTS.
Reverse repurchase agreements involve the risk that the market value of the
securities sold by a Fund may decline below the repurchase price of the
securities and, if the proceeds from the reverse repurchase agreement are
invested in securities, that the market value of the securities bought may
decline at the same time there is decline in the securities sold (and required
to be repurchased).
 
FIXED-INCOME OBLIGATIONS.  The market value of fixed-income securities held by a
Fund and, consequently, the value of the Fund's shares can be expected to vary
inversely to changes in prevailing interest rates. Investors should also
recognize that, in periods of declining interest rates, the yield of the Fund
will tend to be somewhat higher than prevailing market rates and, in periods of
rising interest rates, the Fund's yield will tend to be somewhat lower. Also,
when interest rates are falling, any net inflow of money to the Fund will likely
be invested in instruments producing lower yields than the balance of its
assets, thereby reducing current yield. In periods of rising interest rates, the
opposite can be expected to occur. The prices of longer maturity securities are
also subject to greater market fluctuations as a result of changes in interest
rates. In addition, obligations purchased by a Fund may be subject to the risk
of default. Fixed-Income obligations, including Municipal Obligations, rated in
the lower end of the investment-grade category (Baa or BBB) may have speculative
 
                                       37
<PAGE>   126
 
characteristics and may be more sensitive to economic changes and changes in the
financial condition of their issuers.
 
The fixed-income securities in which the Funds may invest include zero coupon
securities, which make no payments of interest or principal until maturity.
Because these securities avoid the need to make current interest payments, they
may involve greater credit risks than other fixed-income securities.
 
FLOATING RATE, INVERSE FLOATING RATE AND VARIABLE RATE OBLIGATIONS.  The
Municipal Funds, the Fixed-Income Funds and the Growth & Income Fund may
purchase floating rate, inverse floating rate and variable rate obligations,
including participation interests therein.
 
The Money Funds may purchase floating rate and variable rate obligations,
including participation interests therein.
 
The Fixed-Income Funds may purchase mortgage-backed securities that are floating
rate, inverse floating rate and variable rate obligations. Municipal Obligations
purchased by the Municipal Funds may include floating rate, inverse floating
rate and variable rate obligations, including variable rate demand notes issued
by industrial development authorities and other governmental entities, as well
as participation interests therein. Although variable rate demand notes are
frequently not rated by credit rating agencies, a Fund may purchase unrated
notes that are determined by the Advisor or the Fund's sub-advisor to be of
comparable quality at the time of purchase to rated instruments that may be
purchased by the Fund. The absence of an active secondary market could make it
difficult for a Fund to dispose of these securities in the event the issuer of
the note were to default on its payment obligations, and the Fund could, for
this or other reasons, suffer a loss as a result of the default.
 
Each Fund may also invest in securities representing interests in tax-exempt
securities, known as inverse floating obligations or "residual interest bonds,"
which pay interest rates that vary inversely with changes in the interest rates
of specified short-term tax-exempt securities or an index of short-term
tax-exempt securities. The interest rates on inverse floating obligations or
residual interest bonds will typically decline as short-term market interest
rates increase and increase as short-term market rates decline. These securities
have the effect of providing a degree of investment leverage. They will
generally respond to changes in market interest rates more rapidly than
fixed-rate long-term securities (typically twice as fast). As a result, the
market values of inverse floating obligations and residual interest bonds will
generally be more volatile than the market values of fixed-rate tax-exempt
securities.
 
FOREIGN CURRENCY EXCHANGE TRANSACTIONS AND CURRENCY MANAGEMENT.  The Equity
Funds and Fixed-Income Funds (with the exception of the U.S. Government
Securities, Bond & Stock, Growth & Income and Northwest Funds) may, subject to
the investment limitations stated elsewhere in this Prospectus and the SAI,
engage in foreign currency exchange transactions. Funds that buy and sell
securities denominated in currencies other than the U.S. dollar, and receive
interest, dividends and sale proceeds in currencies other than the U.S. dollar,
may enter into foreign currency exchange transactions to convert to and from
different foreign currencies and to convert foreign currencies to and from the
U.S. dollar. The Fund either enters into these transactions on a spot (i.e.,
cash) basis at the spot rate prevailing in the foreign currency exchange market,
or uses forward contracts to purchase or sell foreign currencies.
 
These Funds may enter into foreign currency hedging transactions in an attempt
to protect against changes in foreign currency exchange rates between the trade
and settlement dates of specific securities transactions or changes in foreign
currency exchange rates that would adversely affect a portfolio position or an
anticipated portfolio position. These transactions tend to limit any potential
gain that might be realized should the value of the hedged currency increase.
The precise matching of the forward contract amounts and the value of the
securities involved will not generally be possible because the future value of
these securities in foreign currencies will change as a consequence of market
movements in the value of those securities between the date the forward contract
is entered into and the date it matures. The projection of currency market
movements is extremely difficult, and the successful execution of a hedging
strategy is highly uncertain. In addition, when the Advisor or a Fund's
sub-advisor believes that the currency of a specific country may deteriorate
against another currency, it may enter into a forward contract to sell the less
attractive currency and buy the more attractive one. The amount in question
could be less than or equal to the value of the Fund's securities denominated in
the less attractive currency. The Fund may also enter into
                                       38
<PAGE>   127
 
a forward contract to sell a currency which is linked to a currency or
currencies in which some or all of the Fund's portfolio securities are or could
be denominated, and to buy U.S. dollars. These practices are referred to as
"cross hedging" and "proxy hedging."
 
Forward currency exchange contracts are agreements to exchange one currency for
another - for example, to exchange a certain amount of U.S. dollars for a
certain amount of Japanese yen - at a future date and specified price. Because
there is a risk of loss to the Fund if the other party does not complete the
transaction, the Advisor or the Fund's sub-advisor will enter into forward
currency exchange contracts only with parties approved by the Trusts' Board of
Trustees or persons acting pursuant to their direction.
 
   
Each of the Funds other than the Money Funds (the "Non-Money Funds") (with the
exception of the U.S. Government Securities Bond & Stock, Growth & Income and
Northwest Funds) may invest in securities which are indexed to certain specific
foreign currency exchange rates. These securities expose you to the risk of
significant changes in rates of exchange between the U.S. dollar and any foreign
currency to which an exchange rate-related security is linked. In addition,
there is no assurance that sufficient trading interest to create a liquid
secondary market will exist for a particular exchange rate-related security due
to conditions in the debt and foreign currency markets. Illiquidity in the
forward foreign exchange market and the high volatility of the foreign exchange
market may from time to time combine to make it difficult to sell an exchange
rate-related security prior to maturity without incurring a significant loss.
    
 
While the foregoing actions are intended to protect the Fund from adverse
currency movements, there is a risk that currency movements involved will not be
properly anticipated, and there can be no assurance that such transactions will
be available or that the Funds will use such transactions even if they are
available. Use of currency hedging techniques may also be limited by the need to
protect the status of the Fund as a regulated investment company under the
Internal Revenue Code of 1986, as amended (the "Code").
 
   
FOREIGN INVESTMENTS.  The Money Market, Bond & Stock, Growth & Income and
Northwest Funds may invest in securities of foreign issuers if such securities
are denominated in U.S. dollars. The High Yield, Income, Short Term High Quality
Bond, Emerging Growth, Growth and International Growth Funds may invest in both
U.S. dollar denominated and non-U.S. dollar denominated foreign securities.
There are certain risks involved in investing in foreign securities, including
those resulting from:
    
 
   
- - fluctuations in currency exchange rates,
    
 
   
- - devaluation of currencies,
    
 
   
- - future political or economic developments and the possible imposition of
  currency exchange blockages or other foreign governmental laws or
  restrictions,
    
 
   
- - reduced availability of public information concerning issuers, and
    
 
   
- - the fact that foreign companies are not generally subject to uniform
  accounting, auditing and financial reporting standards or to other regulatory
  practices and requirements comparable to those applicable to domestic
  companies.
    
 
   
Moreover, securities of many foreign companies may be less liquid and their
prices more volatile than those of securities of comparable domestic companies.
In addition, there is the possibility of expropriation, nationalization,
confiscatory taxation and limitations on the use or removal of funds or other
assets of the Funds, including the withholding of dividends. The risks
associated with foreign securities are generally greater for securities of
issuers in emerging markets.
    
 
In addition, while the volume of transactions effected on foreign stock
exchanges has increased in recent years, in most cases it remains appreciably
below that of the New York Stock Exchange (the "NYSE"). Accordingly, the Funds'
foreign investments may be less liquid and their prices may be more volatile
than comparable investments in securities of U.S. companies. Moreover, the
settlement periods for foreign securities, which are often longer than those for
securities of U.S. issuers, may affect portfolio liquidity. In buying and
selling securities on foreign exchanges, the Fund normally pays fixed
commissions that are generally higher than the negotiated commissions charged in
the United States. In addition, there is generally less governmental supervision
and regulation of securities exchanges, brokers and issuers in foreign countries
than in the United States. Foreign securities generally are denominated and pay
dividends or interest in foreign currencies, and the value of the Funds' net
assets as measured in U.S. dollars will be affected favorably or unfavorably by
changes in exchange rates.
 
                                       39
<PAGE>   128
 
   
The Equity Funds, the Short Term High Quality Bond Fund, the Income Fund and the
High Yield Fund may invest in securities of foreign issuers directly or in the
form of AMERICAN DEPOSITARY RECEIPTS ("ADRS"), EUROPEAN DEPOSITARY RECEIPTS
("EDRS"), GLOBAL DEPOSITARY RECEIPTS ("GDRS") or other similar securities
representing securities of foreign issuers. These securities may not necessarily
be denominated in the same currency as the securities they represent. ADRs are
receipts typically issued by a United States bank or trust company evidencing
ownership of the underlying foreign securities. EDRs, which are sometimes
referred to as Continental Depositary Receipts ("CDRs"), are receipts issued by
a European financial institution evidencing a similar arrangement. Generally,
ADRs, in registered form, are designed for use in the United States securities
markets, and EDRs, in bearer form, are designed for use in European securities
markets.
    
 
   
GEOGRAPHIC CONCENTRATION.  Potential investors in the Northwest Fund, the
Municipal Funds (other than the Tax-Exempt Bond Fund) and the California Money
Fund should consider the possibly greater risk arising from the geographic
concentration of their investments, as well as the current and past financial
condition of California and Florida municipal issuers in the case of the
Municipal Funds. In addition to factors affecting the state or regional economy,
certain California and Florida constitutional amendments, legislative measures,
executive orders, administrative regulations, court decisions and voter
initiatives could result in certain adverse consequences affecting California
and Florida municipal obligations, respectively. See the SAI for a more detailed
description of these risks.
    
 
GOVERNMENT STRIPPED MORTGAGE-BACKED SECURITIES. The Income, Short Term High
Quality Bond, U.S. Government Securities and High Yield Funds may invest in
government stripped mortgage-backed securities issued or guaranteed by GNMA,
FNMA or FHLMC. These securities represent beneficial ownership interests in
either periodic principal distributions (principal-only or "PO strips") or
interest distributions (interest-only or "IO strips") on mortgage-backed
certificates issued by GNMA, FNMA or FHLMC, as the case may be. The mortgages
backing GNMA certificates include conventional 30-year fixed-rate mortgages,
15-year fixed-rate mortgages, graduated payment mortgages, and adjustable-rate
mortgages. The U.S. Government guarantees the timely payment of interest and
principal for these securities. However, the guarantees do not extend to the
securities' yield or value, which are likely to vary inversely with fluctuations
in interest rates, nor do the guarantees extend to the yield or value of the
Fund's shares. Investing in government stripped mortgage-backed securities
involves the risks normally associated with investing in mortgage-backed
securities issued by government or government-related entities. See
"Mortgage-Backed Securities" below. In addition, the yields on PO and IO strips
are extremely sensitive to prepayments on the underlying PO and IO strips
mortgage loans. If a decline in the level of prevailing interest rates results
in a higher than anticipated rate of principal prepayment, distributions of
principal will be accelerated, thereby reducing the yield to maturity on IO
strips and increasing the yield to maturity on PO strips. Conversely, if an
increase in the level of prevailing interest rates results in a rate of
principal prepayments lower than anticipated, distributions of principal will be
deferred, thereby increasing the yield to maturity on IO strips and decreasing
the yield to maturity on PO strips. Sufficiently high prepayment rates could
result in the Fund losing some or all of its initial investment in an IO strip.
The Funds will acquire government stripped mortgage-backed securities only if a
liquid secondary market for the securities exists at the time of acquisition.
However, there can be no assurance that the Funds will be able to effect a trade
of a government stripped mortgage-backed security at a time when it wishes to do
so.
 
HOLDINGS IN OTHER INVESTMENT COMPANIES.  When the Advisor or a Fund's
sub-advisor believes that it would be beneficial to the Fund, each of the Tax-
Exempt Money Market, California Money, California Insured Intermediate
Municipal, California Municipal, Florida Insured Municipal, Short Term High
Quality Bond, Tax-Exempt Bond, Emerging Growth, Growth and International Growth
Funds may invest up to 10% of its assets in securities of mutual funds that are
not affiliated with the Advisor or the Fund's sub-advisor, if any. As a
shareholder in any such mutual fund, the Fund will bear its ratable share of the
mutual fund's expenses, including management fees, and will remain subject to
the Fund's advisory and administration fees with respect to the assets so
invested. In addition, the Growth Fund may invest Fund assets in money market
funds affiliated with Janus, provided that Janus remits to the Fund the amount
of any investment advisory and administrative
 
                                       40
<PAGE>   129
 
services fees paid to Janus as the investment manager of the money market fund.
 
   
ILLIQUID SECURITIES.  Up to 15% of the net assets of each Non-Money Fund, and up
to 10% of the net assets of each Money Fund, may be invested in securities that
are not readily marketable. Such illiquid securities may include:
    
 
   
- - repurchase agreements with maturities greater than seven calendar days;
    
 
   
- - time deposits maturing in more than seven calendar days;
    
 
   
- - to the extent a liquid secondary market does not exist for the instruments,
  futures contracts and options thereon;
    
 
   
- - certain over-the-counter options, as described in the SAI;
    
 
   
- - certain variable rate demand notes having a demand period of more than seven
  days; and
    
 
   
- - securities the disposition of which is restricted under federal securities
  laws (excluding certain Rule 144A securities, as described below).
    
 
   
Securities which may be resold pursuant to Rule 144A under the Securities Act of
1933, as amended, will not be included for the purposes of these restrictions,
so long as such securities meet liquidity guidelines established by the Trusts'
Board of Trustees.
    
 
LENDING OF SECURITIES.  The California Money, California Insured Intermediate
Municipal, Short Term High Quality Bond, Emerging Growth, Growth and
International Growth Funds each may lend portfolio securities up to 20% of total
assets to brokers and other financial organizations. The Bond & Stock, Growth &
Income and Northwest Funds may lend portfolio securities up to 33% of total
assets. These transactions involve a risk of loss to the Fund if the
counterparty should fail to return such securities to the Fund upon demand.
 
LOWER-RATED SECURITIES.  The Income, Tax-Exempt Bond, Bond & Stock, Emerging
Growth, Growth & Income and Growth Funds may each invest up to 35% of the total
assets of the Fund in non-investment grade debt securities, sometimes referred
to as "junk bonds." The High Yield Fund may invest all of its assets in such
securities and will generally invest at least 65% of its assets in such
securities.
 
Non-investment grade securities usually entail greater risk (including the
possibility of default or bankruptcy of the issuers), generally involve greater
price volatility and risk of principal and income, and may be less liquid than
higher-rated securities. Both price volatility and illiquidity may make it
difficult for the Fund to value or to sell certain of these securities under
certain market conditions. Non-investment-grade debt securities are often
considered to be speculative and involve greater risk of default or price
changes due to changes in the issuer's creditworthiness. The market prices of
these securities may fluctuate more than higher-rated securities and may decline
significantly in periods of general economic difficulty, which may follow
periods of rising interest rates. For further information, see Appendix A to
this Prospectus.
 
The following table shows, for each indicated Fund, the average percentage of
its total assets that was invested during the past fiscal year in securities
assigned to the various rating categories by S&P, or if unrated by S&P, assigned
to comparable rating categories by another NRSRO, and in unrated securities
determined by the Advisor to be of comparable quality:
 
   
<TABLE>
<CAPTION>
                               Income    Tax-Exempt    Bond & Stock
S&P RATING                      Fund     Bond Fund         Fund
- -------------------------------------------------------------------
<S>                            <C>       <C>           <C>
AAA (or US Treasury).........      %           %              %
AA...........................
A............................
BBB..........................
BB...........................
B............................
Not Rated....................
</TABLE>
    
 
MORTGAGE-BACKED AND ASSET-BACKED SECURITIES.  The California Insured
Intermediate Municipal, California Municipal, Florida Insured Municipal, Short
Term High Quality Bond, U.S. Government Securities, Emerging Growth and
International Growth Funds may invest in mortgage-backed U.S. Government
securities, which represent interests in a pool of mortgage loans. See
"Government Stripped Mortgage-Backed Securities" above. In addition, the Income,
Bond & Stock and Growth & Income Funds may invest in commercial mortgage-backed
securities, which are similar to the above mortgage-backed securities, except
they are not issued or guaranteed by governmental entities. Commercial
mortgage-backed securities include collateralized mortgage obligations and real
estate mortgage investment conduits ("REMICs"). While commercial mortgage-backed
securities are generally structured with one or more types of credit
enhancement, they typically lack a guarantee
 
                                       41
<PAGE>   130
 
by an entity having the credit status of a governmental agency or
instrumentality.
 
To the extent that a Fund purchases mortgage-backed securities at a premium,
mortgage foreclosures and payments and prepayments of principal (which may be
made at any time without penalty) will tend to result in the loss of that
premium. The yield of the Fund may be affected by reinvestment of prepayments at
higher or lower rates than the original investment. In addition, like other debt
securities, the value of mortgage-related securities, including government and
government-related mortgage pools, will generally fluctuate in response to
market interest rates.
 
   
The Money Market, Tax-Exempt Money Market, Short Term High Quality Bond, Bond &
Stock, Emerging Growth and High Yield Funds may purchase asset-backed
securities. These Funds will not invest more than 10% of their total assets in
asset-backed securities, except that the Short Term High Quality Bond Fund may
invest up to 25% of its total assets in such securities. Asset-backed securities
are structured like mortgage-backed securities, but instead of mortgage loans or
interests in mortgage loans, the underlying assets may include such items as
motor vehicle installment sales or installment loan contracts, leases of various
types of real and personal property, including home equity loans, and
receivables from credit card agreements. The ability of an issuer of
asset-backed securities to enforce its security interest in the underlying
assets may be limited.
    
 
   
MUNICIPAL OBLIGATIONS, LEASES AND AMT-SUBJECT BONDS.  The two principal
classifications of municipal bonds are "general obligation" and "revenue" bonds.
General obligation bonds are secured by the issuer's pledge of its full faith
and credit, with either limited or unlimited taxing power for the payment of
principal and interest. Revenue bonds are not supported by the issuer's full
taxing authority. Generally, they are payable only from the revenues of a
particular facility, a class of facilities, or the proceeds of another specific
revenue source.
    
 
   
The Tax-Exempt Money Market, California Money and California Insured
Intermediate Municipal Funds may acquire participations in lease obligations or
installment purchase contract obligations (collectively, "lease obligations") of
municipal authorities or entities. Lease obligations do not constitute general
obligations of the municipality for which the municipality's taxing power is
pledged. Certain of these lease obligations contain "non-appropriation" clauses,
which provide that the municipality has no obligation to make lease or
installment purchase payments in future years unless money is appropriated for
such purpose on a yearly basis. In addition to the "non-appropriation" risk,
these securities represent a relatively new type of financing that has not yet
developed the depth of marketability associated with more conventional bonds. In
the case of a "non-appropriation" lease, the Fund's ability to recover under the
lease in the event of non-appropriation or default will be limited solely to the
repossession of the leased property, and in any event foreclosure of that
property might prove difficult.
    
 
"AMT-Subject Bonds" are Municipal Obligations issued to finance certain "private
activities," such as bonds used to finance airports, housing projects, student
loan programs and water and sewer projects. Interest on AMT-Subject Bonds is a
specific tax preference item for purposes of the federal individual and
corporate alternative minimum taxes. See "Dividends, Capital Gains and Taxes"
for a discussion of the tax consequences of investing in AMT-Subject Bonds.
 
Current federal income tax laws limit the types and volume of bonds qualifying
for the federal income tax exemption of interest, which may have an effect upon
the ability of the Fund to purchase sufficient amounts of tax-exempt securities.
 
NON-DIVERSIFIED STATUS.  Each of the California Money, California Municipal,
Florida Insured Municipal and California Insured Intermediate Municipal Funds is
classified as "non-diversified" under the 1940 Act, which means that the Fund is
not limited by the 1940 Act in the proportion of its assets that may be invested
in the obligations of a single issuer. Each of these Funds must, however, meet
certain diversification standards to qualify as a regulated investment company
under the Code. See the "Taxes" section in the SAI. Each of these Funds may
assume large positions in the obligations of a small number of issuers, which
may subject the Fund to greater credit and other risks than a more broadly
diversified portfolio.
 
REAL ESTATE INVESTMENT TRUSTS.  The Income, Bond & Stock, Growth & Income and
Northwest Funds may invest in real estate investment trusts, known as "REITs."
REITs involve certain unique risks in addition to those risks associated with
investing in the real estate industry in general (such as possible
 
                                       42
<PAGE>   131
 
declines in the value of real estate, lack of availability of mortgage funds or
extended vacancies of property). Equity REITs may be affected by changes in the
value of the underlying property owned by the REITs, while mortgage REITs may be
affected by the quality of any credit extended. REITs are dependent upon
management skills, are not diversified, are subject to heavy cash flow
dependency, risks of default by borrowers, and self-liquidation. REITs are also
subject to the possibilities of failing to qualify for tax-free pass-through of
income under the Code, and failing to maintain their exemptions from
registration under the 1940 Act.
 
Investment in REITs involves risks similar to those associated with investing in
small capitalization companies. REITs may have limited financial resources, may
trade less frequently and in a limited volume and may be subject to more abrupt
or erratic price movements than larger company securities.
 
REPURCHASE AGREEMENTS.  All of the Funds may invest in repurchase agreements,
which are purchases of underlying debt obligations from financial institutions,
such as banks and broker-dealers, subject to the seller's agreement to
repurchase the obligations at an established time and price. Repurchase
agreements can be regarded as loans to the seller, collateralized by the
securities that are the subject of the agreement. Default by the seller would
expose the Fund to possible loss because of adverse market action or delay in
connection with the disposition of the underlying obligations. In addition, if
bankruptcy proceedings are commenced with respect to the seller of the
obligations, the Fund may be delayed or limited in its ability to sell the
collateral. The Tax-Exempt Money Market and California Money Funds' investments
in repurchase agreements are limited by their restrictions on investment in
taxable instruments. Pursuant to an exemptive order granted by the SEC, the
Funds may transfer daily uninvested cash balances into one or more joint trading
accounts. Assets in the joint trading accounts are invested in money market
instruments, and the proceeds are allocated to the participating funds on a
pro-rata basis.
 
RESTRICTED SECURITIES.  Each of the Funds may purchase restricted securities,
provided such securities are (in the case of the Money Market, Tax-Exempt Money
Market, Income, U.S. Government Securities, Tax-Exempt Bond, Bond & Stock,
Growth & Income and Northwest Funds) eligible for resale pursuant to Rule 144A
under the Securities Act of 1933, as amended. Although recent and ongoing
developments in the securities markets have resulted in greater trading of
restricted securities, making restricted securities, in many instances, more
liquid than they once were considered to be, investing in restricted securities
could have the effect of increasing the level of illiquidity of the portfolio
securities of a Fund. While such conditions are in effect, it could be more
difficult for a Fund to fulfill shareholder redemption orders on a timely basis.
If a Fund were required to sell these securities on short notice, it might be
unable to obtain fair market value.
 
STAND-BY COMMITMENTS.  The California Money and Tax-Exempt Money Market Funds
and the Municipal Funds may acquire "stand-by commitments" with respect to
Municipal Obligations held in their portfolios. Under a stand-by commitment, a
dealer agrees to purchase, at a Fund's option, specified Municipal Obligations
at a specified price. A Fund may pay for stand-by commitments either separately
in cash or by paying a higher price for the securities acquired with the
commitment, thus increasing the cost of the securities and reducing the yield
otherwise available from them. The Funds will acquire stand-by commitments
solely to facilitate portfolio liquidity and do not intend to exercise their
rights thereunder for trading purposes.
 
STRATEGIC TRANSACTIONS.  Subject to the investment limitations and restrictions
stated elsewhere in this Prospectus and the SAI, each of the Funds except the
Money Funds may utilize various investment strategies as described below to
hedge various market risks, to manage the effective maturity or duration of
fixed-income securities or for other bona fide hedging purposes. Utilizing these
investment strategies, the Fund may purchase and sell, to the extent not
otherwise limited or restricted for such Fund, exchange-listed and
over-the-counter put and call options on securities, equity and fixed-income
indices and other financial instruments, purchase and sell financial futures
contracts and options thereon, enter into various interest rate transactions
such as swaps, caps, floors or collars, and enter into various currency
transactions such as currency forward contracts, currency futures contracts,
currency swaps or options on currencies or currency futures. The Funds may write
(sell) covered call options as well. A call option is "covered" if the Fund owns
the security underlying the option it has written or it maintains enough cash,
 
                                       43
<PAGE>   132
 
cash equivalents or liquid securities to purchase the underlying security. All
the above are collectively referred to as "Strategic Transactions."
 
   
Strategic Transactions may be used:
    
 
   
- - to attempt to protect against possible changes in the market value of
  securities held in, or to be purchased for, the Fund's portfolio resulting
  from securities markets or currency exchange rate fluctuations,
    
 
   
- - to protect the Fund's unrealized gains in the value of its portfolio
  securities,
    
 
   
- - to facilitate the sale of such securities for investment purposes,
    
 
   
- - to manage the effective maturity or duration of the Fund's portfolio, or
    
 
   
- - to establish a position in the derivatives markets as a temporary substitute
  for purchasing or selling particular securities.
    
 
Some Strategic Transactions may also be used to seek potentially higher returns.
Any or all of these investment techniques may be used at any time, as the use of
any Strategic Transaction is a function of numerous variables including market
conditions.
 
The use of Strategic Transactions involves special considerations and risks; for
example,
 
   
- - the ability of the Fund to utilize Strategic Transactions successfully will
  depend on the ability of the Advisor or the sub-advisor to predict pertinent
  market movements,
    
 
   
- - the risk that the other party to a Strategic Transaction will fail to meet its
  obligations to the Fund,
    
 
   
- - the risk that the Fund will be unable to close out a Strategic Transaction at
  a time when it would otherwise do so, due to the illiquidity of the Strategic
  Transaction and
    
 
   
- - the risk of imperfect correlation, or even no correlation, between price
  movements of Strategic Transactions and price movements of the related
  portfolio positions.
    
 
   
Strategic Transactions can reduce opportunity for gain by offsetting the
positive effect of favorable price movements in the related positions.
    
 
U.S. GOVERNMENT SECURITIES.  All of the Funds may invest in U.S. Government
Securities, which include direct obligations of the U.S. Treasury (such as U.S.
Treasury bills, notes and bonds) and obligations issued or guaranteed by U.S.
Government agencies or instrumentalities. Some obligations issued or guaranteed
by agencies or instrumentalities of the U.S. Government are backed by the full
faith and credit of the U.S. Government (such as GNMA bonds), others are backed
only by the right of the issuer to borrow from the U.S. Treasury (such as
securities of Federal Home Loan Banks) and still others are backed only by the
credit of the instrumentality (such as FNMA and FHLMC bonds).
 
WHEN-ISSUED SECURITIES, FORWARD COMMITMENTS AND DELAYED-DELIVERY
TRANSACTIONS.  In order to secure yields or prices deemed advantageous at the
time, the Funds (with the exception of the Money Funds) may purchase or sell
securities on a when-issued or a delayed-delivery basis. The Funds will enter
into a when-issued transactions only for the purpose of acquiring portfolio
securities. Due to fluctuations in the value of securities purchased on a
when-issued or a delayed-delivery basis, the yields obtained on such securities
may be higher or lower than the yields available in the market on the dates when
the securities are actually delivered to the Fund. Similarly, the sale of
securities for delayed-delivery can involve the risk that the prices available
in the market when delivery is made may actually be higher than those obtained
in the transaction itself. The California Money Fund and the Municipal Funds may
purchase Municipal Obligations offered on a "forward commitment" basis.
 
When-issued Municipal Obligations may include bonds purchased on a "when, as and
if issued" basis, under which the issuance of the securities depends on the
occurrence of a subsequent event, such as approval of a proposed financing by
appropriate municipal authorities. No when-issued or forward commitments will be
made by the California Money Fund or any Municipal Fund if, as a result, more
than 20% of the value of the Fund's total assets would be committed to such
transactions. A significant commitment of a Fund's assets to the purchase of
securities on a "when, as and if issued" basis may increase the volatility of
the Fund's NAV.
 
YEAR 2000.  Many computer software systems in use today cannot properly process
date-related information from and after January 1, 2000. Should any of the
computer systems employed by the Fund's major service providers fail to process
this type of informa-
 
                                       44
<PAGE>   133
 
tion properly, that could have a negative impact on the Fund's operations and
the services that are provided to the Fund's shareholders. The Advisor and
Shareholder Services have advised the Funds that they are reviewing all of their
computer systems with the goal of modifying or replacing such systems prior to
January 1, 2000 to the extent necessary to avoid any such negative impact. In
addition, the Advisor has been advised by the Custodian that it is also in the
process of reviewing its systems with the same goal. As of the date of this
prospectus, the Funds and the Advisor have no reason to believe that these goals
will not be achieved. Similarly, the values of certain of the Funds' assets may
be adversely affected by the inability of their issues or third parties to
properly process date-related information from and after January 1, 2000.
 
   
PORTFOLIO TRANSACTIONS AND TURNOVER.  Each Fund's turnover rate varies from year
to year, depending on market conditions and investment strategies. High turnover
rates increase transaction costs, and may increase taxable capital gains.
Historical portfolio turnover rates for each Fund are shown under "Financial
Highlights" below. The Advisor and the sub-advisors will not consider portfolio
turnover rate a limiting factor in making investment decisions consistent with
the Funds' investment objectives and policies.
    
 
                                       45
<PAGE>   134
 
                          WAYS TO SET UP YOUR ACCOUNT
 
+ Individual or Joint Account
  Individual accounts are owned by one person. Two types of joint accounts
  (having two or more owners) can be opened:
 
  1) in a "joint tenancy" account, the surviving owner(s) automatically
  receive(s) the shares of any owner(s) who die(s); and
 
  2) in a "tenants in common" account, the heir(s) of any deceased owner
  receive(s) such owner's shares, rather than the surviving owners of the joint
  account.
 
+ Retirement
  Retirement plans protect investment income and capital gains from current
  taxes. Contributions to these accounts may be tax deductible. Retirement
  accounts require special applications and typically have lower minimums.
 
   - INDIVIDUAL RETIREMENT ACCOUNTS ("IRAS") allow persons of legal age and
     under 70 1/2 years old with Adjusted Gross Income ("AGI") of less than
     $40,000 (or $60,000 if married and filing jointly) to protect up to $2,000
     (subject to certain limitations for single persons with AGI equal to or
     greater than $30,000 and married persons who file jointly with AGI equal to
     or greater than $50,000) per tax year from certain tax effects. If your
     spouse does not work, you can protect up to an additional $2,000 per year
     in your spouse's name.
 
   - ROTH IRAS allow persons of legal age with AGI not exceeding $110,000 (or
     $160,000 if married and filing jointly) to protect up to $2,000 on a
     non-deductible basis (subject to certain limitations for single persons
     with AGI equal to or greater than $95,000 and married persons who file
     jointly with AGI equal to or greater than $150,000) per tax year from
     certain tax effects.
 
   - ROLLOVER IRAS allow persons to retain special tax advantages for certain
     transfers from employer-sponsored retirement plans (often occurring when a
     person changes employers).
 
   - SIMPLIFIED EMPLOYEE PENSION PLANS ("SEP-IRAS") provide small business
     owners or those with self-employed income (and their eligible employees)
     with many of the same advantages as a Keogh, but with fewer administrative
     requirements.
 
+ Gifts or Transfers to a Minor Child
  ("UGMA" or "UTMA")
  These gifts or transfers provide a way to give money to a child and obtain
  certain tax benefits. A parent or grandparent can give up to $10,000 a year to
  each child without paying federal gift tax. Depending on state laws, you can
  set up a custodial account under the Uniform Gifts to Minors Act (UGMA) or the
  Uniform Transfers to Minors Act (UTMA).
 
+ Trust
  Trusts can be used for many purposes, including charitable contributions and
  providing a regular income for a child until a certain age. The trust must be
  established before an account can be opened.
 
+ Corporation or Other Organization
  Corporations, associations, partnerships, institutions, or other groups may
  invest for many purposes.
 
                                       46
<PAGE>   135
 
   
                         HOW CAN I INVEST IN THE FUNDS?
    
 
TO OPEN AN ACCOUNT:
(MINIMUM $1,000*)
TO ADD TO AN ACCOUNT:
(MINIMUM $50**)
 
- --------------------------------------------------------------------------------
 
+ By Phone -- 800-222-5852
Exchange from another Fund account with the same registration, including name,
address, and taxpayer ID number (social security number for an individual).
 
Call WM Shareholder Services at 800-222-5852. (5:00 a.m. to 6:00 p.m., Pacific
Time/8:00 a.m. to 9:00 p.m., Eastern Time, Monday through Friday and 6:00 a.m.
to 3:00 p.m., Pacific Time/9:00 a.m. to 6:00 p.m., Eastern Time, on Saturdays)
Exchange from another Fund account with the same registration, including name,
address, and taxpayer ID number.
 
Call WM Shareholder Services at 800-222-5852
 
- --------------------------------------------------------------------------------
 
+ By Mail
Complete and sign the application. Make your check or negotiable bank draft
payable to The WM Group of Funds. Third-party checks are not accepted.
 
Mail the completed application form and check to:
 
THE WM GROUP OF FUNDS
P.O. BOX 9757
PROVIDENCE, RI 02940-9757
Make your check payable to The WM Group of Funds. Indicate your account number
on your check. Include the "next investment" stub from your previous account
statement. Mail the check and stub to the address printed on your account
statement.
 
Exchange by mail: call 800-222-5852 for instructions
 
- --------------------------------------------------------------------------------
 
+ By Wire
1) Telephone WM Shareholder Services for an application form and instructions.
2) Instruct your bank to wire Federal Funds exactly as follows:
BOSTON SAFE AND DEPOSIT TRUST
BOSTON, MA
ABA# 011-001234
FOR CREDIT TO:
THE WM GROUP OF FUNDS
ACCOUNT #167053
(FUND NAME AND CLASS OF SHARES)
(CUSTOMER'S NAME)
(CUSTOMER'S SOCIAL SECURITY NUMBER)
 
3) Mail the completed application form to:
THE WM GROUP OF FUNDS
P.O. BOX 9757
PROVIDENCE, RI 02940-9757
Instruct your bank/financial institution to wire Federal Funds as described at
left under paragraph 2.
 
                                       47
<PAGE>   136
 
   
                     HOW CAN I INVEST IN THE FUNDS?(CONT.)
    
 
TO OPEN AN ACCOUNT:
(MINIMUM $1,000)
TO ADD TO AN ACCOUNT:
(MINIMUM $50)
 
- --------------------------------------------------------------------------------
 
+ Systematic
 
(Minimum New Account amount $50)
1) Obtain and complete an application form.
 
2) Attach a voided check or deposit slip from the bank account you would like
the investments transferred from and indicate either the day of the week or
day(s) of the month when the purchase would occur.
 
3) Mail the application to the address listed above.
Pre-authorized periodic investments will be processed automatically. (Minimum
Amount $25)
 
- --------------------------------------------------------------------------------
 
                                       48
<PAGE>   137
 
   
WHICH CLASS OF SHARES IS BEST FOR ME?
    
 
   
This prospectus offers two classes of fund shares: Class I and Class S. The next
several pages will expand upon the "Fees and Expenses" section above to help you
determine which class of shares is best for you. This will depend upon a number
of factors including the amount you plan to invest and how long you plan to hold
your shares.
    
 
   
CLASS I SHARES
    
 
Class I shares are not available for purchase directly by investors. They are
sold at the net asset value next determined after receipt of a properly
completed purchase order, and are not subject to a contingent defined sales
charge.
 
EACH FUND RESERVES THE RIGHT TO SUSPEND THE OFFERING OF SHARES OF ANY CLASS AT
ANY TIME.  Each Fund also reserves the right to reject any specific purchase
order, including purchases by exchange.
 
   
CLASS S SHARES
    
 
Class S shares are offered at the NAV next calculated after receipt of a
properly completed purchase order, without an initial sales charge. The entire
amount of the purchase price is invested in the Fund selected. However, if Class
S shares are redeemed within five years of purchase (four years in the case of
Class S shares of the Short Term High Quality Bond Fund), a contingent deferred
sales charge generally must be paid.
 
The proceeds from any contingent deferred sales charges are paid to the
Distributor to defray expenses for providing distribution services for Class S
shares. Examples of such expenses include compensation to salespeople and
selected dealers. The Distributor currently pays authorized dealers commissions
of 4.00% of the price of Class S shares sold by them (3.00% for Class S shares
of the Short Term High Quality Bond Fund).
 
CONTINGENT DEFERRED SALES CHARGE.  Class S shares redeemed within five years of
purchase are subject to a contingent deferred sales charge according to the
following schedule. Class S shares purchased by exchange will be subject to a
contingent deferred sales charge using the schedule of the Fund originally
purchased. Shares purchased through reinvestment of dividends or capital gain
distributions are not subject to a contingent deferred sales charge.
 
Class S shares of all Funds:
 
<TABLE>
<CAPTION>
                  YEAR OF
                REDEMPTION                        Contingent
              AFTER PURCHASE                 Deferred Sales Charge
- ------------------------------------------------------------------
<S>                                          <C>
First......................................          5.00%
Second.....................................          4.00%
Third......................................          3.00%
Fourth.....................................          2.00%
Fifth......................................          1.00%
Sixth and following........................          0.00%
</TABLE>
 
Class S shares of certain Funds purchased prior to March 20, 1998 may be subject
to a different contingent deferred sales charge schedule, as described in the
SAI.
 
The contingent deferred sales charge is calculated by applying the above
percentages to the lesser of (i) the NAV of the redeemed shares at the time they
were purchased or (ii) the NAV of the redeemed shares at the time of redemption.
This means that no contingent deferred sales charge will be charged on any NAV
increases above the initial purchase price. Shares are redeemed in the order
that results in the lowest possible rate being charged. Accordingly, they will
be redeemed first from shares purchased through reinvested dividends or capital
gain distributions and then in the order of purchase.
 
Here is an example:
 
An investor purchases 100 Class S shares at $10 per share -- for a total cost of
$1,000. In the second year after the purchase, the NAV has risen to $12 per
share, and the investor has acquired 10 more shares through dividend
reinvestment.
 
At that time, the investor decides to make the first redemption. The transaction
includes 50 shares at $12 per share -- for a total of $600.
 
The first 10 shares to be redeemed will not be subject to any charge because of
the 10 shares received from dividend reinvestment.
 
As for the other 40 shares, the charge will be applied only to the original cost
of $10 per share. The NAV increase of $2 per share will not be considered. As a
result, $400 of the redemption proceeds (40 X $10) will be charged a rate of 4%,
which is the second-year rate shown in the table above. The resulting sales
charge will be 4% X $400, which will be $16.
 
                                       49
<PAGE>   138
 
The contingent deferred sales charge may be waived for redemptions of Class S
shares under these circumstances:
 
   
- - Following the death or post-purchase disability of a shareholder, as defined
  in Section 72(m)(7) of the Code;
    
 
   
- - In connection with certain distributions from an IRA or other retirement plan,
  as described in the SAI, including IRA distributions made to shareholders over
  age 59 1/2;
    
 
   
- - According to a systematic withdrawal plan -- but limited to 12% annually of
  the value of the account at the time the plan is established; and
    
 
   
- - In connection with the liquidation by the Fund of a shareholder's account as
  described under "How to Sell Shares."
    
 
YOU MUST NOTIFY THE FUND WHENEVER YOU ARE ENTITLED TO A WAIVER OR REIMBURSEMENT
OF CDSC.
 
CONVERSION FEATURE.  Class S shares that remain outstanding for eight years will
convert to Class A shares of the same Fund based on the relative NAVs at the
time of conversion.
 
   
DISTRIBUTION OF INCOME AND CAPITAL GAINS
    
 
The Funds distribute dividends from net investment income (which is essentially
interest and dividends from securities held), minus expenses. They also make
capital gain distributions if realized gains from the sale of securities exceed
realized losses. The amount of dividends of net investment income and
distributions of net realized long- and short-term capital gains payable to
shareholders will be determined separately for each Fund. Dividends from the net
investment income of the Money, Fixed-Income and Municipal Funds will normally
be declared daily and paid monthly. Dividends from the net investment income of
the Bond & Stock and Growth & Income Funds will normally be declared and paid
quarterly. Dividends from the net investment income of the Growth Fund and will
normally be declared and paid semiannually. Dividends from the net investment
income of the Northwest, Emerging Growth and International Growth Funds will
normally be declared and paid annually. Except as otherwise specified, the Funds
distribute capital gains, if any, at least annually, normally in December.
 
You have three choices regarding what you do with dividends and capital gain
distributions. You can make your choice at the time of your initial purchase or
by contacting the Funds' offices or your investment representative. The options
include:
 
AUTOMATIC REINVESTMENT.  This procedure is automatically effective unless you
choose another option. All dividends and capital gain distributions are
reinvested into additional shares of the Fund.
 
REINVEST DIVIDENDS IN ANOTHER FUND.  Income dividends may be automatically
invested in the same class of shares of another Fund, provided that Fund is
available for sale in your state of residence.
 
CASH PAYMENT OF ALL DISTRIBUTIONS.  All dividends and capital gain distributions
are deposited to your pre-authorized bank account or paid by check.
 
Reinvestments of income dividends and capital gain distributions are made at the
closing NAV on the day dividends or distributions are deducted from the Fund's
assets.
 
If you've chosen to receive dividends or capital gain distributions in cash and
your check is returned as undeliverable, the Funds reserve the right (but are
not obligated) to reinvest your check at the then-current NAV and to
automatically reinvest subsequent dividends and capital gain distributions in
your account. The Funds may also automatically reinvest dividends or
distributions of $10 or less.
 
   
HOW CAN I SELL SHARES?
    
 
YOU MAY REDEEM SHARES AT ANY TIME.  The price paid per share will be the next
NAV that is calculated (less any applicable CDSC).
 
TELEPHONE.  You may authorize telephone transactions on your Fund account
application. Provided you have pre-authorized these transactions, you may redeem
or exchange shares by telephoning 800-222-5852. You may also request these
transactions through your investment representative. Proceeds may be directed to
a pre-authorized bank or broker account or to the address of record for the
account. Exchanges also may be made by telephone.
 
It may be difficult to reach the Trusts' offices by telephone during periods of
unusual economic or market activity. Please be persistent if this occurs. The
Funds' and Portfolios' transfer agent is committed to extending its 5:00 a.m. to
6:00 p.m. Pacific time business hours during such periods.
 
                                       50
<PAGE>   139
 
For your protection, all telephone instructions are verified by requesting
personal shareholder information, providing written confirmations of each
telephone transaction, and recording telephone instructions. WM Shareholder
Services, Inc. ("Shareholder Services" or the "Transfer Agent") may require a
Letter of Authorization, other documents, or authorization from your broker to
initiate telephone redemptions of $50,000 or more that are not directed to your
pre-authorized bank or broker account. If these or other reasonable procedures
are used, neither the Transfer Agent nor the Funds will be liable for following
telephone instructions which they reasonably believe to be genuine. Shareholders
assume the risk of any losses in such cases. However, the Transfer Agent or the
Trusts may be liable for any losses because of unauthorized or fraudulent
telephone instructions if they fail to follow reasonable procedures.
 
WRITTEN REQUEST.  Redemptions also may be requested by writing the Trusts'
offices. Written requests may require a signature guarantee, as discussed below,
and the return of any outstanding share certificates. Changes in pre-authorized
redemption instructions or your account registration may also require signature
guarantees. For your protection, the signature(s) must be guaranteed by an
eligible guarantor institutions which includes banks, credit unions, broker
dealers, national securities exchanges, savings institutions as well as
medallion signature guarantee.
 
PROMPT PAYMENT.  Payment normally will be made on the next business day after
redemption, but no later than seven days after the transaction, unless you
recently purchased Fund shares by check or Automated Clearing House transfer. In
that case, redemption proceeds may be delayed for up to 15 days, until the
Transfer Agent verifies collection of funds. Redemption proceeds will be sent by
check or Automated Clearing House transfer to your bank account without charge.
Wire redemption proceeds may be subject to a $10 fee. The receiving bank also
may charge a fee.
 
SYSTEMATIC WITHDRAWAL PLAN.  Shareholders may choose to receive specific cash
withdrawals on a periodic basis. A $5,000 minimum balance in the applicable Fund
is required to establish a systematic withdrawal plan (the minimum balance
requirement is waived for IRA accounts). Shares of the Fund will be redeemed to
provide the requested payment. Naturally, withdrawals that continually exceed
dividend income and capital gains will eventually exhaust the account. Class S
shareholders may use a systematic withdrawal plan to redeem up to 12% of the
beginning balance annually without incurring a contingent deferred sales charge.
The beginning balance is the account balance at the time the plan is
established.
 
OTHER CONSIDERATIONS.  It is costly to maintain small accounts. Accordingly, an
account may be closed after 90 days' written notice if the total account value
falls below a minimum (currently $700 or, in the case of an IRA account, $300)
when any transfer or redemption is made. Shares will be redeemed at the next
calculated NAV, less any applicable CDSC, on the day the account is closed. To
prevent an account closure, investors may purchase shares to bring their account
balance above the minimum during the 90-day grace period.
 
IRAS AND OTHER TAX-SHELTERED RETIREMENT PLANS
 
Shares of the Funds may be appropriate for many retirement plans, including
IRAs. Retirement plan contributions are tax deductible in some cases, and
earnings compound on a tax-deferred basis until withdrawn.
 
Information about IRAs and other qualified retirement plans is available from
the Trusts' offices or your Investment Representative.
 
   
HOW CAN I EXCHANGE MY SHARES?
    
 
You may exchange shares of any of the Funds for shares of the same class of any
other of the Funds. Exchanges of shares are sales and may result in a gain or
loss for income tax purposes.
 
Exchanges are made at the relative NAVs of the shares being exchanged. No
additional sales charge will be incurred when exchanging shares from a Fund
which imposes an initial or contingent deferred sales charge. Any contingent
deferred sales charge on the subsequent sale of shares acquired by exchange will
be based on the contingent deferred sales charge schedule of the Fund from which
the shares were initially purchased. Shares exchanged from a Money Fund will be
subject to the acquired Fund's sales charge unless the shares given in exchange
were previously exchanged from a Fund that imposes an initial or contingent
deferred sales charge.
 
All exchanges are subject to the minimum investment requirements of the Fund
being acquired and to its availability for sale in your state of residence. You
may
 
                                       51
<PAGE>   140
 
arrange for automatic monthly exchanges. The Funds reserve the right to refuse
any order for the purchase of shares, including those by exchange. In
particular, a pattern of exchanges that coincides with a "market timing"
strategy may be disruptive to a Fund and, consequently, may be disallowed.
 
DIVIDENDS, CAPITAL GAINS AND TAXES
 
   
Each Fund will distribute substantially all of its net investment income and net
realized capital gain on a current basis.
    
 
   
You are responsible for federal income tax (and state and local income taxes, if
applicable) on dividends and capital gain distributions. This is true whether
such dividends or distributions are paid in cash or reinvested in additional
shares.
    
 
   
Generally, dividends paid by the Funds from interest, dividends or net
short-term capital gains will be taxed as ordinary income. Distributions
designated by the Fund as deriving from net gains on securities held for more
than one year are taxable as such (generally at a 20% tax rate), regardless of
how long you have held your shares.
    
 
   
A dividend or distribution made shortly after the purchase of shares of a Fund
by a shareholder, although in effect a return of capital to that particular
shareholder, would be taxable to him or her as described above.
    
 
Because of tax law requirements, you must provide the Trusts an accurate and
certified taxpayer identification number (for individuals, a Social Security
number) to avoid the 31% "back-up" withholding tax.
 
Early in each calendar year each Fund will notify you of the amount and tax
status of distributions paid to you for the preceding year.
 
   
Any gain resulting from the sale or exchange of your shares will generally also
be subject to tax. You should consult your tax advisor for more information on
your own tax situation, including possible foreign, state and local taxes.
    
 
   
ADDITIONAL CONSIDERATIONS FOR SHAREHOLDERS OF THE MUNICIPAL FUNDS, THE
TAX-EXEMPT MONEY MARKET FUND AND THE CALIFORNIA MONEY FUND.  Distributions
designated as "exempt-interest" dividends by any of the Municipal Funds, the
Tax-Exempt Money Market Fund or the California Money Fund generally are not
subject to federal income tax.
    
 
   
However, if you receive social security or railroad retirement benefits you
should consult your tax advisor to determine what effect, if any, an investment
in the fund may have on the taxation of your benefits. In addition, an
investment in the Fund may result in liability for federal alternative minimum
tax, both for individual and corporate shareholders.
    
 
   
ADDITIONAL CONSIDERATIONS FOR SHAREHOLDERS OF THE FLORIDA INSURED MUNICIPAL
FUND.  It is expected that shares of the Florida Insured Municipal Fund held by
a Florida resident will be exempt from the Florida intangible personal property
tax and that a portion of the dividends paid by the California Money Fund,
California Municipal Fund and the California Insured Intermediate Municipal Fund
will be exempt from California State personal income tax, but not from
California State franchise tax or California State corporate income tax.
Corporate taxpayers should consult their tax advisor concerning the Florida and
California state tax treatment of investments in these funds.
    
 
   
ADDITIONAL CONSIDERATIONS FOR SHAREHOLDERS OF THE INTERNATIONAL GROWTH
FUND.  The International Growth Fund's investments in foreign securities may be
subject to foreign withholding taxes. In that case, the Fund's yield on those
securities would be decreased. Shareholders may be entitled to claim a credit or
deduction with respect to foreign taxes. In addition, the Fund's investments in
foreign securities or foreign currencies may increase or accelerate the Fund's
recognition of ordinary income and may affect the timing or amount of the Fund's
distributions.
    
 
   
THE INFORMATION CONTAINED IN THIS PROSPECTUS IS NOT A COMPLETE DESCRIPTION OF
THE FEDERAL, STATE OR LOCAL TAX CONSEQUENCES OF INVESTING IN THE FUNDS. YOU
SHOULD CONSULT YOUR TAX ADVISOR BEFORE INVESTING IN THE FUNDS.
    
 
                                  ORGANIZATION
 
   
HOW NAV IS DETERMINED
    
 
Investment securities and other assets are valued primarily on the basis of
market quotations or, if quotations are not readily available, by a method that
the Board of Trustees believes accurately reflects fair value. Foreign
securities are valued on the basis of
 
                                       52
<PAGE>   141
 
   
quotations from the primary market in which they are traded, and are translated
from the local currency into U.S. dollars using current exchange rates. As a
result, changes in the value of those currencies in relation to the U.S. dollar
may affect the Funds' NAV. Because foreign markets may be open at different
times than the New York Stock Exchange, the value of the Funds' shares may
change on days when shareholders are not able to buy or sell them. If events
materially affecting the values of the Funds' foreign investments occur between
the close of foreign markets and the close of regular trading on the New York
Stock Exchange, these instruments may be valued at their fair value. The NAVs
are determined at the end of each business day of the New York Stock Exchange or
at 1:00 p.m. Pacific time, whichever is earlier.
    
 
ADVISOR AND SUB-ADVISORS
 
   
The Funds are managed by WM Advisors, Inc., which is referred to as the Advisor
in this Prospectus. The Advisor's address is 1201 Third Avenue, Suite 1400,
Seattle, Washington 98101. The Advisor has delegated portfolio management
responsibilities in respect of the Growth, California Municipal, Florida Insured
Municipal, California Insured Intermediate Municipal, International Growth and
Tax-Exempt Bond Funds to sub-advisors. Each Fund may, to the extent permitted
under the 1940 Act, place portfolio transactions with (and pay brokerage
commissions to) affiliates of the Advisor and the sub-advisors to the Funds
indicated below. For more information, see the SAI.
    
 
The Advisor has been in the business of investment management since 1944. Its
responsibilities include formulating each Fund's investment policies (subject to
the terms of this Prospectus), analyzing economic trends, directing and
evaluating the investment services provided by the sub-advisors and monitoring
each Fund's investment performance and reporting to the Board of Trustees, as
well as providing certain administrative services to the Funds. In connection
with its service as investment advisor to each Fund,the Advisor may engage one
or more sub-advisors to provide investment advisory services to any of the Funds
and may change or eliminate any such sub-advisor if it deems such action to be
in the best interests of a Fund and its shareholders. Where the Advisor has not
delegated such duties to a sub-advisor, it is responsible for managing the
investment and reinvestment of the Fund's assets. The Advisor is an indirect
wholly owned subsidiary of Washington Mutual, Inc. ("Washington Mutual"), a
publicly owned financial services company.
 
The following organizations, under the supervision of the Advisor, act as
sub-advisors to the Funds indicated below, and are responsible for continuously
reviewing, supervising and administering such Funds' respective investment
programs:
 
JANUS, 100 Fillmore Street, Denver, Colorado 80206, acts as sub-advisor to the
Growth Fund. Janus is an indirectly majority owned subsidiary of Kansas City
Southern Industries, Inc., a publicly traded holding company whose primary
subsidiaries are engaged in transportation, information processing and financial
services. Janus has been providing investment advice to mutual funds or other
large institutional clients since 1970. As of March 27, 1998, Janus' assets
under management were in excess of $67.8 billion.
 
VAN KAMPEN, One Parkview Plaza, Oakbrook, Illinois 60181, acts as sub-advisor to
the California Municipal, California Insured Intermediate Municipal and Florida
Insured Municipal Funds. Subject to shareholder approval, it is expected that,
effective January 1, 1999, Van Kampen will become sub-advisor to the Tax-Exempt
Bond Fund. Van Kampen is an indirect wholly owned subsidiary of Morgan Stanley,
Dean Witter, Discover & Co., a publicly held global financial services company.
Van Kampen provides investment advice to a wide variety of individual,
institutional and investment company clients and, together with its affiliates,
had aggregate assets under management or supervision, as of June 5, 1998, of
more than $3.9 billion.
 
WARBURG, 466 Lexington Avenue, New York, New York 10017, acts as sub-advisor to
the International Growth Fund. Warburg is a professional investment counseling
firm which provides investment services to investment companies, employee
benefit plans, endowment funds, foundations and other institutions and
individuals. As of March 30, 1998, Warburg managed approximately $15 billion of
assets. Incorporated in 1970, Warburg is indirectly controlled by Warburg,
Pincus & Co. ("WP & Co."), which has no business other than being a holding
company of Warburg and its affiliates. Lionel I. Pincus, the managing partner of
WP & Co., may be deemed to control both WP & Co. and Warburg.
 
                                       53
<PAGE>   142
 
INDIVIDUAL FUND MANAGERS
 
   
Gary J. Pokrzywinski, CFA, Vice President and Senior Portfolio Manager of the
Advisor, is primarily responsible for the day-to-day management of the High
Yield, Income and Short Term High Quality Bond Funds. He has managed such Funds
since March 1998, 1992, 1992, January 1998 and January 1998, respectively, and
has been employed by the Advisor since 1992. Effective November 1, 1998, Craig
V. Sosey, Vice President and Portfolio Manager of the Advisor, is primarily
responsible for the day-to-day management of the U.S. Government Securities
Fund. He has been employed by the Advisor since May 1998. Prior to that he was
the Assistant Treasurer of California Federal Bank, where he worked for over
eight years. He holds an MBA from UC Berkeley. A team of investment
professionals employed by the Advisor will be jointly and primarily responsible
for the day-to-day management of the Growth & Income Fund. Jeffrey D. Huffman,
CFA, Vice President and Senior Portfolio Manager of the Advisor, has had primary
responsibility for the day-to-day management of the Bond & Stock Fund since
1995. Prior to 1995, Mr. Huffman was Vice President of Trust Investments for
First Interstate Bank since 1994 and a portfolio manager at Safeco since 1992.
David W. Simpson, CFA, Vice President and Senior Portfolio Manager of the
Advisor, has had primary responsibility for the day-to-day management of the
Northwest Fund since 1993 and he and Linda C. Walk, CFA, who is Vice President
and Portfolio Manager of the Advisor, have been co-managers of the Emerging
Growth Fund since March 1998. Mr. Simpson has been employed by the Advisor since
1993. Prior to 1997, Ms. Walk was a portfolio manager at Laird Norton Trust
Company since 1996, a valuation consultant for Ernst & Young LLP since 1994, and
a valuation consultant for Management Advising Services since 1990. Audrey S.
Quaye, CPA, Vice President and Portfolio Manager of the Advisor, is primarily
responsible for the day-to-day management of the Money Market Fund, the Tax-
Exempt Money Market Fund and the California Money Fund. She has managed such
Funds since 1997, 1997, and March 1998, respectively, and has been employed at
the Advisor since 1996. Prior to 1996, Ms. Quaye worked at the Benham Group as a
municipal credit analyst.
    
 
Warren B. Lammert has had primary responsibility for the day-to-day management
of the Growth Fund since its inception. Mr. Lammert is a Vice President of
Janus. Mr. Lammert joined Janus in 1987, and his duties at Janus include the
management of separate equity accounts.
 
   
Since May 1992, Joseph A. Piraro, Vice President of Van Kampen, has had primary
responsibility for the day-to-day management of the California Municipal Fund.
Mr. Piraro has been employed by Van Kampen since 1992. Mr. Piraro has also had
primary responsibility for the day-to-day management of the California Insured
Intermediate Municipal Fund since the Fund's inception. Since January 1997,
Thomas M. Byron, Vice President of Van Kampen, has had primary responsibility
for the day-to-day management of the Florida Insured Municipal Fund. Mr. Byron
has been at Van Kampen for over 15 years and prior to taking over responsibility
for managing the Fund, Mr. Byron was Head Buyer and Manager of Van Kampen's Unit
Investment Trust desk. David C. Johnson, Senior Vice President of Van Kampen,
will have primary responsibility for the day-to-day management of the Tax-
Exempt Bond Fund's portfolio January 1, 1999. Mr. Johnson has been employed by
Van Kampen since 1989.
    
 
   
The following people are primarily responsible for the day-to-day management of
the International Growth Fund: Harold W. Ehrlich, CFA, CIC, Managing Director of
Warburg, has 14 years of investment experience. Prior to 1998, Mr. Ehrlich was a
senior vice president, portfolio manager and analyst at Templeton Investment
Counsel Inc. Todd Jacobson, CFA, Vice President of Warburg. Prior to joining
Warburg in 1997, Mr. Jacobson was an analyst at Brown Brothers Harriman from
1993 to 1997.
    
 
   
MANAGEMENT FEES
    
 
   
During their most recent fiscal years, each of the Funds paid management fees to
the Advisor at the following rates:
    
 
   
<TABLE>
<CAPTION>
                                         Fees Paid as a Percentage
FUNDS                                          of Net Assets
- ----------------------------------------------------------------------
<S>                                   <C>
Money Market Fund...................  .45%
Tax-Exempt Money Market Fund........  .45%
California Money Fund...............  .45%
Short Term High Quality Bond Fund...  .50%
Target Maturity 2002 Fund...........  .25%
U.S. Government Securities Fund.....  .625%
Income Fund.........................  .625%
High Yield Fund.....................  .625% of the first $250 million,
                                      .50% thereafter*
Bond & Stock Fund...................  .625%
Growth & Income Fund................  .625%
Tax-Exempt Bond Fund................  .50%
California Municipal Fund...........  .70%
</TABLE>
    
 
                                       54
<PAGE>   143
 
   
<TABLE>
<CAPTION>
                                         Fees Paid as a Percentage
FUNDS                                          of Net Assets
- ----------------------------------------------------------------------
<S>                                   <C>
California Insured Intermediate
  Municipal Fund....................  .70%
Florida Insured Municipal Fund......  .70%
Northwest Fund......................  .625%
Growth Fund.........................  1.10%
Emerging Growth Fund................  1.05%
International Growth Fund...........  1.10%
 
* The High Yield Fund has not completed a full fiscal year. These
  numbers represent the percentages of net assets the Fund has agreed
  to pay the Advisor in its first full fiscal year.
</TABLE>
    
 
   
The Advisor has voluntarily undertaken, through October 31, 1999, to waive a
portion of its management fees for the following Funds to the extent that total
Fund operating expenses for class A shares would otherwise exceed the indicated
annual rates:
    
 
   
<TABLE>
<CAPTION>
                                                   Total Fund
FUNDS                                          Operating Expenses
- -----------------------------------------------------------------
<S>                                            <C>
Money Market Fund............................        0.73%
Tax-Exempt Money Market Fund.................        0.57%
California Money Fund........................        0.85%
Short Term High Quality Bond Fund............        0.82%
Target Maturity 2002 Fund....................        1.00%
California Municipal Fund....................        0.88%
California Insured Intermediate Municipal
  Fund.......................................        1.00%
Florida Insured Municipal Fund...............        1.00%
Growth & Income Fund.........................        1.01%
Growth Fund..................................        1.30%
Income Portfolio.............................        1.00%
Flexible Income Portfolio....................        1.00%
</TABLE>
    
 
   
In addition, the Distributor has agreed to waive its distribution fees for Class
B shares of the following Funds to the extent that total Fund operating expenses
for Class B shares would otherwise exceed the indicated annual rates.
    
 
   
<TABLE>
<CAPTION>
                                                   Total Fund
FUNDS                                          Operating Expenses
- -----------------------------------------------------------------
<S>                                            <C>
Income Fund..................................        1.83%
Growth & Income Fund.........................        1.76%
Growth Fund..................................        2.05%
</TABLE>
    
 
   
The Advisor has also undertaken to waive its management fees and reimburse
expenses to the extent necessary to limit the total Fund operating expenses for
Class A shares of the following funds to the indicated annual rates through
November 1, 2000 (except that beginning on November, 1, 1999, the waivers and
reimbursements for the Tax-Exempt Money Market Fund and the Short Term High
Quality Bond Fund may be adjusted, so long as total Fund operating expenses as a
percentage of assets do not exceed the annual rates of 0.72% and 1.00%,
respectively):
    
 
   
<TABLE>
<CAPTION>
                                                   Total Fund
FUNDS                                          Operating Expenses
- -----------------------------------------------------------------
<S>                                            <C>
Money Market Fund............................               0.73%
Tax-Exempt Money Market Fund.................               0.57%
Short Term High Quality Bond Fund............               0.82%
U.S. Government Securities Fund..............               0.96%
Tax-Exempt Bond Fund.........................               0.88%
California Municipal Fund....................               0.88%
Income Fund..................................               1.04%
Growth & Income Fund.........................               1.00%
Growth Fund..................................               1.30%
</TABLE>
    
 
   
In addition, the Advisor has undertaken, through October 31, 1999, to waive all
of its management fees for the High Yield Fund:
    
 
   
- --------------------------------------------------------------------------------
    
- --------------------------------------------------------------------------------
NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY
REPRESENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS AND IN THE FUNDS'
OFFICIAL SALES LITERATURE IN CONNECTION WITH THE OFFERING OF THE FUNDS' SHARES,
AND, IF GIVEN OR MADE, SUCH OTHER INFORMATION OR REPRESENTATIONS MUST NOT BE
RELIED UPON AS HAVING BEEN AUTHORIZED BY THE FUNDS. THIS PROSPECTUS DOES NOT
CONSTITUTE AN OFFER IN ANY STATE IN WHICH, OR TO ANY PERSON TO WHOM, SUCH OFFER
MAY NOT LAWFULLY BE MADE.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
   
The financial highlights table is intended to help you understand the Funds'
financial performance for the past 5 years or, if shorter, the period of the
Fund's operations. Certain information reflects financial results for a single
Fund share. The total returns in the table represent the rate that an investor
would have earned (or lost) on an investment in the Fund (assuming reinvestment
of all dividends and distributions). The information provided below with respect
to each of the Funds within WM Trust I (Money Market, Tax-Exempt Money Market,
Income, U.S. Government Securities, Tax-Exempt Bond, Bond & Stock, Growth &
Income and Northwest Funds) for periods prior to October 31, 1998 has been
audited by LeMaster & Daniels PLLC. The information provided below with respect
to each of the Funds within WM Trust II (California Money, Short Term High
Quality Bond, Target Maturity 2002, California Municipal, California Insured
Intermediate Municipal, Florida Insured Municipal, Growth, International Growth
and Emerging Growth Funds) for periods prior to October 31, 1998 has been
audited by PricewaterhouseCoopers LLP. The information provided below for the
period ended October 31, 1998 has been audited by Deloitte & Touche LLP. The
Reports of Independent Accountants for each such period, along with the Funds'
financial statements, are included in the Annual Reports to Shareholders for
such periods, which are available upon request.
    
 
                                       55
<PAGE>   144
 
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
   
  MONEY MARKET FUND    CLASS I SHARES(11)
    
 
   
<TABLE>
<CAPTION>
                                                                  FISCAL PERIOD
                                                                MARCH 23, 1998 -
                                                              OCTOBER 31, 1998(13)
                                                              ---------------------
<S>                                                           <C>
Net Asset Value, Beginning of Period........................          $1.00
                                                                     ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investments Income/(Loss).............................          0.031
  Net Realized & Unrealized Gain/(Loss) on Investments......              -
                                                                     ------
    Total from Investment Operations........................          0.031
                                                                     ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................         (0.031)
  Distributions in Excess of Net Investment Income..........              -
  Distributions from Net Realized Gains.....................              -
  Distributions in Excess of Net Realized Gains.............              -
  Distributions from Capital................................              -
                                                                     ------
    Total Distributions.....................................         (0.031)
                                                                     ------
Net Asset Value, End of Period..............................          $1.00
                                                                     ======
Total Return(5).............................................          3.17%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period ($1,000's).......................       $108,720
  Ratio of Operating Expenses to Average Net Assets(12).....          0.54%(2)
  Ratio of Net Investment Income to Average Net Assets......          5.06%(2)
  Portfolio Turnover Rate...................................              -
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credits Allowed by
   the Custodian............................................          0.55%(2)
</TABLE>
    
 
   
  MONEY MARKET FUND    CLASS S SHARES(11)
    
 
   
<TABLE>
<CAPTION>
                                                                  FISCAL PERIOD
                                                                MARCH 23, 1998 -
                                                              OCTOBER 31, 1998(13)
                                                              ---------------------
<S>                                                           <C>
Net Asset Value, Beginning of Period........................          $1.00
                                                                     ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investments Income/(Loss).............................          0.026
  Net Realized & Unrealized Gain/(Loss) on Investments......              -
                                                                     ------
    Total from Investment Operations........................          0.026
                                                                     ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................         (0.026)
  Distributions in Excess of Net Investment Income..........              -
  Distributions from Net Realized Gains.....................              -
  Distributions in Excess of Net Realized Gains.............              -
  Distributions from Capital................................              -
                                                                     ------
    Total Distributions.....................................         (0.026)
                                                                     ------
Net Asset Value, End of Period..............................          $1.00
                                                                     ======
Total Return(5).............................................          2.58%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period ($1,000's).......................         $6,304
  Ratio of Operating Expenses to Average Net Assets.........          1.81%(2)
  Ratio of Net Investment Income to Average Net Assets......          3.79%(2)
  Portfolio Turnover Rate...................................              -
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credits Allowed by
   the Custodian............................................          1.82%(2)
</TABLE>
    
 
   
Footnotes appear on page 71
    
 
                                       56
<PAGE>   145
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  CALIFORNIA MONEY FUND   CLASS I SHARES
 
   
<TABLE>
<CAPTION>
                                                              FISCAL PERIOD
                                                                  ENDED       YEAR ENDED    PERIOD ENDED
                                                               OCTOBER 31,     JUNE 30,       JUNE 30,
                                                                 1998(3)        1998(1)        1997+
                                                              ------------------------------------------
<S>                                                           <C>             <C>           <C>
Net Asset Value, Beginning of Period........................      $1.00          $1.00          $1.00
                                                                 ------         ------         ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income/(Loss)..............................      0.008          0.029          0.028
  Net Realized & Unrealized Gain/(Loss) on Investments......          -              -              -
                                                                 ------         ------         ------
    Total From Investment Operations........................      0.008          0.029          0.028
                                                                 ------         ------         ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................     (0.008)        (0.029)        (0.028)
  Distributions in Excess of Net Investment Income..........          -              -              -
  Distributions from Net Realized Gains.....................          -              -              -
                                                                 ------         ------         ------
  Distributions in Excess of Net Realized Gains.............          -              -              -
  Distributions from Capital................................          -              -              -
    Total Distributions.....................................     (0.008)        (0.029)        (0.028)
                                                                 ------         ------         ------
Net Asset Value, End of Period..............................      $1.00          $1.00          $1.00
                                                                 ======         ======         ======
Total Return(5).............................................      1.06%          2.99%          2.89%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................         $1             $1             $1
  Ratio of Operating Expenses to Average Net Assets(12).....      0.60%(2)       0.63%          0.60%(2)
  Ratio of Net Investment Income to Average Net Assets......      2.44%(2)       2.89%          3.00%(2)
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credits Allowed by
   the Custodian............................................      0.77%(2)       0.81%          0.89%(2)
</TABLE>
    
 
  CALIFORNIA MONEY FUND   CLASS S SHARES
 
   
<TABLE>
<CAPTION>
                                                              FISCAL PERIOD
                                                                  ENDED       YEAR ENDED     YEAR ENDED JUNE 30,
                                                               OCTOBER 31,     JUNE30,     ------------------------
                                                                 1998(3)       1998(1)      1997     1996    1995+
                                                              -----------------------------------------------------
<S>                                                           <C>             <C>          <C>      <C>      <C>
Net Asset Value, Beginning of Period........................       $1.00         $1.00      $1.00    $1.00    $1.00
                                                                 -------        ------     ------   ------   ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income/(Loss)..............................       0.005         0.019      0.020    0.022    0.020
  Net Realized & Unrealized Gain/(Loss) on Investments......           -             -          -        -        -
                                                                 -------        ------     ------   ------   ------
    Total From Investment Operations........................       0.005         0.019      0.020    0.022    0.020
                                                                 -------        ------     ------   ------   ------
 LESS DISTRIBUTIONS:
 Dividends from Net Investment Income.......................      (0.005)       (0.019)    (0.020)  (0.022)  (0.020)
 Distributions in Excess of Net Investment Income...........           -             -          -        -        -
 Distributions from Net Realized Gains......................           -             -          -        -        -
                                                                 -------        ------     ------   ------   ------
 Distributions in Excess of Net Realized Gains..............           -             -          -        -        -
 Distributions from Capital.................................           -             -          -        -        -
    Total Distributions.....................................      (0.005)       (0.019)    (0.020)  (0.022)  (0.020)
                                                                 -------        ------     ------   ------   ------
Net Asset Value, End of Period..............................       $1.00         $1.00      $1.00    $1.00    $1.00
                                                                 =======        ======     ======   ======   ======
Total Return(5).............................................       0.66%         1.96%      2.03%    2.22%    2.04%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................          $1            $1         $1      $10      $10
  Ratio of Operating Expenses to Average Net Assets(12).....       1.60%(2)      1.60%      1.60%    1.60%    1.60%
  Ratio of Net Investment Income to Average Net Assets......       1.44%(2)      1.85%      2.00%    2.19%    1.98%
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credits Allowed by
   the Custodian............................................       4.80%(2)      1.85%      1.89%    1.89%    1.90%
</TABLE>
    
 
   
Footnotes appear on page 71
    
 
                                       57
<PAGE>   146
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  SHORT TERM HIGH QUALITY BOND FUND   CLASS I SHARES
 
   
<TABLE>
<CAPTION>
                                                              FISCAL PERIOD
                                                                  ENDED       YEAR ENDED    YEAR ENDED
                                                               OCTOBER 31,     JUNE 30,      JUNE 30,
                                                                 1998(3)       1998(1)        1997+
                                                              -----------------------------------------
<S>                                                           <C>             <C>          <C>
Net Asset Value, Beginning of Period........................       $2.32         $2.32         $2.32
                                                                 -------       -------       -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income/(Loss)..............................        0.04          0.14          0.14
  Net Realized & Unrealized Gain/(Loss) on Investments......        0.03          0.00(6)       0.00(6)
                                                                 -------       -------       -------
    Total From Investment Operations........................        0.07          0.14         $0.14
                                                                 -------       -------       -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................       (0.04)        (0.14)        (0.14)
  Distributions in Excess of Net Investment Income..........           -             -             -
  Distributions from Net Realized Gains.....................           -             -             -
  Distributions in Excess of Net Realized Gains.............           -             -             -
  Distributions from Capital................................           -         (0.00)(6)         -
                                                                 -------       -------       -------
    Total Distributions.....................................       (0.04)        (0.14)        (0.14)
                                                                 -------       -------       -------
Net Asset Value, End Of Period..............................       $2.35         $2.32         $2.32
                                                                 =======       =======       =======
Total Return(5).............................................       3.20%         6.17%         5.94%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................      $1,631        $3,103        $2,752
  Ratio of Operating Expenses to Average Net Assets(12).....       0.57%(2)      0.53%         0.57%(2)
  Ratio of Net Investment Income to Average Net Assets......       5.69%(2)      6.03%         6.75%(2)
  Portfolio Turnover Rate...................................         19%          138%           51%
  Ratio of Operating Expenses to Average Net Assets Without
   Credit Allowed by the Custodian..........................           -         0.53%(8)      0.57%(8)
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credit Allowed by
   the Custodian............................................       0.96%(2)      1.00%(8)      1.20%(8)
</TABLE>
    
 
  SHORT TERM HIGH QUALITY BOND FUND   CLASS S SHARES
 
   
<TABLE>
<CAPTION>
                                                              FISCAL PERIOD
                                                                  ENDED                      YEAR ENDED JUNE 30,
                                                               OCTOBER 31,    -------------------------------------------------
                                                                 1998(3)        1998(1)        1997         1996         1995+
                                                              -----------------------------------------------------------------
<S>                                                           <C>             <C>             <C>          <C>          <C>
Net Asset Value, Beginning of Period........................       $2.32          $2.32         $2.32        $2.35        $2.39
                                                                 -------        -------       -------      -------      -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income/(Loss)..............................        0.04           0.12          0.12         0.13(7)      0.06
  Net Realized & Unrealized Gain/(Loss) on Investments......        0.03           0.00(6)       0.00(6)     (0.03)        0.02
                                                                 -------        -------       -------      -------      -------
    Total From Investment Operations........................        0.07           0.12          0.12         0.10         0.08
                                                                 -------        -------       -------      -------      -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................       (0.04)         (0.12)        (0.12)       (0.13)       (0.06)
  Distributions in Excess of Net Investment Income..........           -              -             -            -        (0.06)
  Distributions from Net Realized Gains.....................           -              -             -            -            -
  Distributions in Excess of Net Realized Gains                        -              -             -            -            -
  Distributions from Capital................................           -          (0.00)(6)         -        (0.00)(6)    (0.00)(6)
                                                                 -------        -------       -------      -------      -------
    Total Distributions.....................................       (0.04)         (0.12)        (0.12)       (0.13)       (0.12)
                                                                 -------        -------       -------      -------      -------
Net Asset Value, End of Period..............................       $2.35          $2.32         $2.32        $2.32        $2.35
                                                                 =======        =======       =======      =======      =======
Total Return(5).............................................       2.85%          5.13%         5.37%        4.27%        3.64%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................        $762           $850          $800       $3,531       $2,303
  Ratio of Operating Expenses to Average Net Assets(12).....       1.57%(2)       1.57%         1.50%        1.50%
  Ratio of Net Investment Income to Average Net Assets......       4.69%(2)       4.98%         5.75%        5.47%        5.35%
  Portfolio Turnover Rate...................................         19%           138%           51%         225%         137%
  Ratio of Operating Expenses to Average Net Assets Without
   Credit Allowed by the Custodian..........................           -          1.58%(8)      1.57%(8)     1.50%(8)       N/A
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credit Allowed by
   the Custodian............................................       2.08%(2)       2.05%(8)      2.20%(8)     2.17%(8)     2.14%
</TABLE>
    
 
   
Footnotes appear on page 71
    
 
                                       58
<PAGE>   147
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
   
  U.S. GOVERNMENT SECURITIES FUND   CLASS I SHARES(14)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL PERIOD
                                                                MARCH 23, 1998 -
                                                              OCTOBER 31, 1998(13)
                                                              --------------------
<S>                                                           <C>
Net Asset Value, Beginning of Period........................          $10.86
                                                                     -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investments Income....................................            0.42
  Net Realized & Unrealized Gain on Investments.............            0.12
                                                                     -------
    Total from Investment Operations........................            0.54
                                                                     -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................           (0.41)
  Distributions in Excess of Net Investment Income..........               -
  Distributions from Net Realized Gains.....................               -
  Distributions in Excess of Net Realized Gains.............               -
  Distributions from Capital................................               -
                                                                     -------
    Total Distributions.....................................           (0.41)
                                                                     -------
Net Asset Value, End of Period..............................          $10.99
                                                                     =======
Total Return(5).............................................           5.00%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period ($1,000's).......................         $39,939
  Ratio of Operating Expenses to Average Net Assets(12).....           0.66%(2)
  Ratio of Net Investment Income to Average Net Assets......           6.25%(2)
  Portfolio Turnover Rate...................................             12%
  Ratio of Operating Expenses to Average Net Assets Without
   fee waivers or fees reduced by Credits Allowed by the
   Custodian................................................           1.11%(2)
  Ratio of Operating Expenses to Average Net Assets
   including interest expense...............................           1.10%(2)
</TABLE>
    
 
   
  U.S. GOVERNMENT SECURITIES FUND   CLASS S SHARES(14)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL PERIOD
                                                                MARCH 23, 1998 -
                                                              OCTOBER 31, 1998(13)
                                                              --------------------
<S>                                                           <C>
Net Asset Value, Beginning of Period........................         $10.86
                                                                     ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investments Income....................................           0.35
  Net Realized & Unrealized Gain on Investments.............           0.13
                                                                     ------
    Total from Investment Operations........................           0.48
                                                                     ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................          (0.35)
  Distributions in Excess of Net Investment Income..........              -
  Distributions from Net Realized Gains.....................              -
  Distributions in Excess of Net Realized Gains.............              -
  Distributions from Capital................................              -
                                                                     ------
    Total Distributions.....................................          (0.35)
                                                                     ------
Net Asset Value, End of Period..............................         $10.99
                                                                     ======
Total Return(5).............................................          4.35%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period ($1,000's).......................         $5,357
  Ratio of Operating Expenses to Average Net Assets(12).....          1.67%(2)
  Ratio of Net Investment Income to Average Net Assets......          5.24%(2)
  Portfolio Turnover Rate...................................            12%
  Ratio of Operating Expenses to Average Net Assets Without
   fee waivers or fees reduced by Credits Allowed by the
   Custodian................................................          2.34%(2)
  Ratio of Operating Expenses to Average Net Assets
   including interest expense...............................          2.12%(2)
</TABLE>
    
 
   
Footnotes appear on page 71
    
 
                                       59
<PAGE>   148
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
   
  INCOME FUND   CLASS I SHARES(15)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL PERIOD
                                                                MARCH 23, 1998 -
                                                              OCTOBER 31, 1998(13)
                                                              --------------------
<S>                                                           <C>
Net Asset Value, Beginning of Period........................          $9.57
                                                                     ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investments Income/(Loss).............................           0.41
  Net Realized & Unrealized Gain/(Loss) on Investments......          (0.13)(9)
                                                                     ------
    Total from Investment Operations........................           0.28
                                                                     ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................          (0.41)
  Distributions in Excess of Net Investment Income..........              -
  Distributions from Net Realized Gains.....................              -
  Distributions in Excess of Net Realized Gains.............              -
  Distributions from Capital................................              -
                                                                     ------
    Total Distributions.....................................          (0.41)
                                                                     ------
Net Asset Value, End of Period..............................          $9.44
                                                                     ======
Total Return(5).............................................          2.84%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period ($1,000's).......................         $7,342
  Ratio of Operating Expenses to Average Net Assets(12).....          0.71%(2)
  Ratio of Net Investment Income to Average Net Assets......          7.02%(2)
  Portfolio Turnover Rate...................................            37%
</TABLE>
    
 
   
  INCOME FUND    CLASS S SHARES(15)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL PERIOD
                                                                MARCH 23, 1998 -
                                                              OCTOBER 31, 1998(13)
                                                              --------------------
<S>                                                           <C>
Net Asset Value, Beginning of Period........................          $9.58
                                                                     ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investments Income/(Loss).............................           0.35
  Net Realized & Unrealized Gain/(Loss) on Investments......          (0.13)(9)
                                                                     ------
    Total from Investment Operations........................           0.22
                                                                     ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................          (0.35)
  Distributions in Excess of Net Investment Income..........              -
  Distributions from Net Realized Gains.....................              -
  Distributions in Excess of Net Realized Gains.............              -
  Distributions from Capital................................              -
                                                                     ------
    Total Distributions.....................................          (0.35)
                                                                     ------
Net Asset Value, End of Period..............................          $9.45
                                                                     ======
Total Return(5).............................................          2.20%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period ($1,000's).......................         $1,624
  Ratio of Operating Expenses to Average Net Assets(12).....          1.92%(2)
  Ratio of Net Investment Income to Average Net Assets......          5.81%(2)
  Portfolio Turnover Rate...................................            37%
</TABLE>
    
 
   
Footnotes appear on page 71
    
 
                                       60
<PAGE>   149
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
   
  HIGH YIELD FUND   CLASS I SHARES
    
 
   
<TABLE>
<CAPTION>
                                                                   FISCAL PERIOD
                                                                  JULY 27, 1998 -
                                                                OCTOBER 31, 1998(13)
                                                                --------------------
<S>                                                             <C>
Net Asset Value, Beginning of Period........................           $10.00
                                                                      -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investments Income....................................             0.22
  Net Realized & Unrealized Loss on Investments.............            (1.13)
                                                                      -------
    Total from Investment Operations........................            (0.91)
                                                                      -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................            (0.23)
  Distributions in Excess of Net Investment Income..........            (0.01)
  Distributions from Net Realized Gains.....................                -
  Distributions in Excess of Net Realized Gains.............                -
  Distributions from Capital................................                -
                                                                      -------
    Total Distributions.....................................            (0.24)
                                                                      -------
Net Asset Value, End of Period..............................            $8.85
                                                                      =======
Total Return(5).............................................          (9.13)%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period ($1,000's).......................           $1,309
  Ratio of Operating Expenses to Average Net Assets(12).....            0.48%(2)
  Ratio of Net Investment Income to Average Net Assets......            9.10%(2)
  Portfolio Turnover Rate...................................              54%
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers or fees reduced by Credits Allowed by the
   Custodian................................................            0.97%(2)
</TABLE>
    
 
   
  HIGH YIELD FUND    CLASS S SHARES
    
 
   
<TABLE>
<CAPTION>
                                                                   FISCAL PERIOD
                                                                 AUGUST 10, 1998 -
                                                                OCTOBER 31, 1998(13)
                                                                --------------------
<S>                                                             <C>
Net Asset Value, Beginning of Period........................            $9.61
                                                                      -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investments Income....................................             0.16
  Net Realized & Unrealized Loss on Investments.............            (0.67)
                                                                      -------
    Total from Investment Operations........................            (0.51)
                                                                      -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................            (0.18)
  Distributions in Excess of Net Investment Income..........            (0.00)(6)
  Distributions from Net Realized Gains.....................                -
  Distributions in Excess of Net Realized Gains.............                -
  Distributions from Capital................................                -
                                                                      -------
    Total Distributions.....................................            (0.18)
                                                                      -------
Net Asset Value, End of Period..............................            $8.92
                                                                      =======
Total Return(5).............................................          (5.30)%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period ($1,000's).......................              $24
  Ratio of Operating Expenses to Average Net Assets(12).....            1.51%(2)
  Ratio of Net Investment Income to Average Net Assets......            8.07%(2)
  Portfolio Turnover Rate...................................              54%
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers or fees reduced by Credits Allowed by the
   Custodian................................................            2.18%(2)
</TABLE>
    
 
   
Footnotes appear on page 71
    
 
                                       61
<PAGE>   150
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
   
  TAX EXEMPT BOND FUND    CLASS I SHARES(16)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL PERIOD
                                                                MARCH 23, 1998 -
                                                              OCTOBER 31, 1998(13)
                                                              --------------------
<S>                                                           <C>
Net Asset Value, Beginning of Period........................          $8.06
                                                                     ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investments Income/(Loss).............................           0.27
  Net Realized & Unrealized Gain/(Loss) on Investments......           0.05
                                                                     ------
    Total from Investment Operations........................           0.32
                                                                     ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................          (0.27)
  Distributions in Excess of Net Investment Income..........              -
  Distributions from Net Realized Gains.....................              -
  Distributions in Excess of Net Realized Gains.............              -
  Distributions from Capital................................              -
                                                                     ------
    Total Distributions.....................................          (0.27)
                                                                     ------
Net Asset Value, End of Period..............................          $8.11
                                                                     ======
Total Return(5).............................................          4.00%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period ($1,000's).......................             $1
  Ratio of Operating Expenses to Average Net Assets(12).....          0.55%(2)
  Ratio of Net Investment Income to Average Net Assets......          5.43%(2)
  Portfolio Turnover Rate...................................             6%
</TABLE>
    
 
   
  TAX EXEMPT BOND FUND    CLASS S SHARES(16)
    
 
   
<TABLE>
<CAPTION>
                                                                  FISCAL PERIOD
                                                                MARCH 23, 1998 -
                                                              OCTOBER 31, 1998(13)
                                                              --------------------
<S>                                                           <C>
Net Asset Value, Beginning of Period........................          $8.06
                                                                     ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investments Income/(Loss).............................           0.16
  Net Realized & Unrealized Gain/(Loss) on Investments......           0.10
                                                                     ------
    Total from Investment Operations........................           0.26
                                                                     ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................          (0.21)
  Distributions in Excess of Net Investment Income..........              -
  Distributions from Net Realized Gains.....................              -
  Distributions in Excess of Net Realized Gains.............              -
  Distributions from Capital................................              -
                                                                     ------
    Total Distributions.....................................          (0.21)
                                                                     ------
Net Asset Value, End of Period..............................          $8.11
                                                                     ======
Total Return(5).............................................          3.27%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period ($1,000's).......................             $1
  Ratio of Operating Expenses to Average Net Assets(12).....          2.70%(2)
  Ratio of Net Investment Income to Average Net Assets......          3.28%(2)
  Portfolio Turnover Rate...................................             6%
</TABLE>
    
 
   
Footnotes appear on page 71
    
 
                                       62
<PAGE>   151
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  CALIFORNIA MUNICIPAL FUND   CLASS I SHARES
 
   
<TABLE>
<CAPTION>
                                                                  FISCAL PERIOD
                                                                      ENDED          YEAR ENDED      PERIOD ENDED
                                                                   OCTOBER 31,        JUNE 30,         JUNE 30,
                                                                     1998(3)          1998(1)           1997+
                                                                  -----------------------------------------------
<S>                                                               <C>                <C>             <C>
Net Asset Value, Beginning of Period........................         $11.33            $10.92           $10.62
                                                                     ------            ------           ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investments Income/(Loss).............................           0.20(7)           0.61(7)          0.58
  Net Realized & Unrealized Gain/(Loss) on Investments......           0.13              0.41             0.30
                                                                     ------            ------           ------
    Total from Investment Operations........................           0.33              1.02             0.88
                                                                     ------            ------           ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................          (0.20)            (0.61)           (0.58)
  Distributions in Excess of Net Investment Income..........              -                 -                -
  Distributions from Net Realized Gains.....................              -                 -                -
  Distributions in Excess of Net Realized Gains.............              -                 -                -
  Distributions from Capital................................              -                 -                -
                                                                     ------            ------           ------
    Total Distributions.....................................          (0.20)            (0.61)           (0.58)
                                                                     ------            ------           ------
Net Asset Value, End of Period..............................         $11.46            $11.33           $10.92
                                                                     ======            ======           ======
Total Return(5).............................................          2.90%             9.53%            8.49%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period ($1,000's).......................             $1                $1               $1
  Ratio of Operating Expenses to Average Net Assets(12).....          0.72%(2)          0.74%            0.72%(2)
  Ratio of Net Investment Income to Average Net Assets......          5.12%(2)          5.44%            5.76%(2)
  Portfolio Turnover Rate...................................            28%               87%              36%
  Ratio of Operating Expenses to Average Net Assets Without
   Credits Allowed by the Custodian.........................              -             0.74%(8)         0.72%(2)(8)
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers and/or fees reduced by Credits Allowed by the
   Custodian................................................          0.76%(2)          0.93%(8)         1.01%(2)(8)
</TABLE>
    
 
  CALIFORNIA MUNICIPAL FUND    CLASS S SHARES
   
<TABLE>
<CAPTION>
                                                                FISCAL PERIOD
                                                                    ENDED         YEAR ENDED
                                                                 OCTOBER 31,       JUNE 30,
                                                                   1998(3)         1998(1)
                                                                -----------------------------
<S>                                                             <C>              <C>
Net Asset Value, Beginning of Period........................       $11.33           $10.92
                                                                   ------           ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investments Income/(Loss).............................         0.16(7)          0.50(7)
  Net Realized & Unrealized Gain/(Loss) on Investments......         0.13             0.41
                                                                   ------           ------
    Total from Investment Operations........................         0.29             0.91
                                                                   ------           ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................        (0.16)           (0.50)
  Distributions in Excess of Net Investment Income..........            -                -
  Distributions from Net Realized Gains.....................            -                -
  Distributions in Excess of Net Realized Gains.............            -                -
  Distributions from Capital................................            -                -
                                                                   ------           ------
    Total Distributions.....................................        (0.16)           (0.50)
                                                                   ------           ------
Net Asset Value, End of Period..............................       $11.46           $11.33
                                                                   ======           ======
Total Return(5).............................................        2.56%            8.45%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period ($1,000's).......................           $7               $8
  Ratio of Operating Expenses to Average Net Assets(12).....        1.72%(2)         1.74%
  Ratio of Net Investment Income to Average Net Assets......        4.12%(2)         4.43%
  Portfolio Turnover Rate...................................          28%              87%
  Ratio of Operating Expenses to Average Net Assets Without
   Credits Allowed by the Custodian.........................            -            1.74%(8)
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers and/or fees reduced by Credits Allowed by the
   Custodian................................................        2.33%(2)         1.95%(8)
 
<CAPTION>
 
                                                                   YEAR ENDED JUNE 30,
                                                              ------------------------------
                                                               1997        1996       1995+
                                                              ------------------------------
<S>                                                           <C>         <C>         <C>
Net Asset Value, Beginning of Period........................  $10.60      $10.53      $10.38
                                                              ------      ------      ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investments Income/(Loss).............................    0.51        0.51(7)     0.53
  Net Realized & Unrealized Gain/(Loss) on Investments......    0.32        0.07        0.15
                                                              ------      ------      ------
    Total from Investment Operations........................    0.83        0.58        0.68
                                                              ------      ------      ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................   (0.51)      (0.51)      (0.53)
  Distributions in Excess of Net Investment Income..........       -           -           -
  Distributions from Net Realized Gains.....................       -           -       (0.00)(6)
  Distributions in Excess of Net Realized Gains.............       -           -
  Distributions from Capital................................       -           -           -
                                                              ------      ------      ------
    Total Distributions.....................................   (0.51)      (0.51)      (0.53)
                                                              ------      ------      ------
Net Asset Value, End of Period..............................  $10.92      $10.60      $10.53
                                                              ======      ======      ======
Total Return(5).............................................   8.02%       5.61%       6.78%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period ($1,000's).......................      $7         $11         $11
  Ratio of Operating Expenses to Average Net Assets(12).....   1.72%       1.69%       1.60%
  Ratio of Net Investment Income to Average Net Assets......   4.76%       4.81%       5.14%
  Portfolio Turnover Rate...................................     36%         17%         22%
  Ratio of Operating Expenses to Average Net Assets Without
   Credits Allowed by the Custodian.........................   1.72%(8)    1.69%(8)      N/A
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers and/or fees reduced by Credits Allowed by the
   Custodian................................................   2.01%(8)    2.04%(8)    2.04%
</TABLE>
    
 
   
Footnotes appear on page 71
    
 
                                       63
<PAGE>   152
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  CALIFORNIA INSURED INTERMEDIATE MUNICIPAL FUND   CLASS I SHARES
 
   
<TABLE>
<CAPTION>
                                                              FISCAL PERIOD
                                                                  ENDED        YEAR ENDED    PERIOD ENDED
                                                               OCTOBER 31,      JUNE 30,       JUNE 30,
                                                                 1998(3)        1998(1)         1997+
                                                              -------------------------------------------
<S>                                                           <C>             <C>            <C>
Net Asset Value, Beginning of Period........................      $10.81         $10.74         $10.58
                                                                  ------         ------         ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investments Income/(Loss).............................        0.17           0.51           0.49(7)
  Net Realized & Unrealized Gain/(Loss) on Investments......        0.21           0.17           0.21
                                                                  ------         ------         ------
    Total from Investment Operations........................        0.38           0.68           0.70
                                                                  ------         ------         ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................       (0.17)         (0.51)        (0.49)
  Distributions in Excess of Net Investment Income..........           -              -              -
  Distributions from Net Realized Gains.....................           -          (0.10)        (0.05)
  Distributions in Excess of Net Realized Gains.............           -              -              -
  Distributions from Capital................................           -              -              -
                                                                  ------         ------         ------
    Total Distributions.....................................       (0.17)         (0.61)        (0.54)
                                                                  ------         ------         ------
Net Asset Value, End of Period..............................      $11.02         $10.81         $10.74
                                                                  ======         ======         ======
Total Return(5).............................................       3.54%          6.53%          6.70%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period ($1,000's).......................          $1             $1             $1
  Ratio of Operating Expenses to Average Net Assets(12).....       0.57%(2)       0.60%          0.57%(2)
  Ratio of Net Investment Income to Average Net Assets......       4.64%(2)       4.75%          4.86%(2)
  Portfolio Turnover Rate...................................          7%            25%            29%
  Ratio of Operating Expenses to Average Net Assets Without
   Credits Allowed by the Custodian.........................           -          0.60%(8)       0.58%(2)(8)
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credits Allowed by
   the Custodian............................................       0.86%(2)       0.99%(8)       1.06%(1)(8)
</TABLE>
    
 
  CALIFORNIA INSURED INTERMEDIATE MUNICIPAL FUND   CLASS S SHARES
 
   
<TABLE>
<CAPTION>
                                                               FISCAL PERIOD
                                                                   ENDED                 YEAR ENDED JUNE 30,
                                                                OCTOBER 31,    ---------------------------------------
                                                                  1998(3)        1998(1)       1997     1996    1995+
                                                               -------------------------------------------------------
<S>                                                            <C>             <C>            <C>      <C>      <C>
Net Asset Value, Beginning of Period........................       $10.81         $10.74      $10.56   $10.45   $10.10
                                                                   ------         ------      ------   ------   ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investments Income/(Loss).............................         0.13           0.41        0.41(7)   0.41    0.43
  Net Realized & Unrealized Gain/(Loss) on Investments......         0.21           0.17        0.23     0.15     0.35
                                                                   ------         ------      ------   ------   ------
    Total from Investment Operations........................         0.34           0.58        0.64     0.56     0.78
                                                                   ------         ------      ------   ------   ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................        (0.13)         (0.41)      (0.41)   (0.41)   (0.43)
  Distributions in Excess of Net Investment Income..........            -              -           -        -        -
  Distributions from Net Realized Gains.....................            -          (0.10)      (0.05)   (0.04)       -
  Distributions in Excess of Net Realized Gains.............            -              -           -        -        -
  Distributions from Capital................................            -              -           -        -        -
                                                                   ------         ------      ------   ------   ------
    Total Distributions.....................................        (0.13)         (0.51)      (0.46)   (0.45)   (0.43)
                                                                   ------         ------      ------   ------   ------
Net Asset Value, End of Period..............................       $11.02         $10.81      $10.74   $10.56   $10.45
                                                                   ======         ======      ======   ======   ======
Total Return(5).............................................        3.20%          5.47%       6.17%    5.46%    7.90%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period ($1,000's).......................           $2             $2          $2      $11      $11
  Ratio of Operating Expenses to Average Net Assets(12).....        1.57%(2)       1.59%       1.57%    1.48%    1.17%
  Ratio of Net Investment Income to Average Net Assets......        3.64%(2)       3.76%       3.86%    3.87%    4.20%
  Portfolio Turnover Rate...................................           7%            25%         29%      27%      13%
  Ratio of Operating Expenses to Average Net Assets Without
   Credits Allowed by the Custodian.........................            -          1.59%(8)    1.58%(8)  1.50%(8)    N/A
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or Credits Allowed by
   the Custodian............................................        3.36%(2)       1.98%(8)    2.06%(8)  2.14%(8)  2.16%
</TABLE>
    
 
   
Footnotes appear on page 71
    
 
                                       64
<PAGE>   153
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  FLORIDA INSURED MUNICIPAL FUND   CLASS I SHARES
 
   
<TABLE>
<CAPTION>
                                                              FISCAL PERIOD
                                                                  ENDED       YEAR ENDED   PERIOD ENDED
                                                               OCTOBER 31,     JUNE 30,      JUNE 30,
                                                                 1998(3)       1998(1)         1997+
                                                              ------------------------------------------
<S>                                                           <C>             <C>          <C>
Net Asset Value, Beginning of Period:.......................     $10.35          $9.93         $9.68
                                                                 ------         ------        ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income/(Loss)..............................       0.19           0.54          0.49(7)
  Net Realized & Unrealized Gain/(Loss) on Investments......       0.14(9)        0.36          0.26
                                                                 ------         ------        ------
    Total From Investment Operations........................       0.33           0.90          0.75
                                                                 ------         ------        ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................      (0.18)         (0.48)        (0.50)
  Distributions In Excess Of Net Investment Income..........          -              -         (0.00)(6)
  Distributions from Net Realized Gains.....................          -              -             -
  Distributions In Excess Of Net Realized Gains.............          -              -             -
  Distributions From Capital................................          -              -             -
                                                                 ------         ------        ------
    Total Distributions.....................................      (0.18)         (0.48)        (0.50)
                                                                 ------         ------        ------
Net Asset Value, End of Period..............................     $10.50         $10.35         $9.93
                                                                 ======         ======        ======
Total Return(5).............................................      3.17%          9.61%         7.88%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period ($1,000).........................         $1             $1            $1
  Ratio of Operating Expenses to Average Net Assets(12).....      0.57%(2)       0.62%         0.57%(2)
  Ratio of Net Investment Income to Average Net Assets......      5.01%(2)       5.05%         5.26%(2)
  Portfolio Turnover Rate...................................        40%            51%           53%
  Ratio of Operating Expenses to Average Net Assets Without
   Credit Allowed by the Custodian..........................          -          0.63%(8)      0.59%(2)(8)
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or fees reduced by
   Credits Allowed by the Custodian.........................      1.10%(2)       1.19%(8)      1.21%(2)(8)
</TABLE>
    
 
  FLORIDA INSURED MUNICIPAL FUND   CLASS S SHARES
 
   
<TABLE>
<CAPTION>
                                                              FISCAL PERIOD
                                                                  ENDED              YEAR ENDED JUNE 30,
                                                               OCTOBER 31,    ----------------------------------
                                                                 1998(3)      1998(1)    1997     1996    1995+
                                                              --------------------------------------------------
<S>                                                           <C>             <C>       <C>      <C>      <C>
Net Asset Value, Beginning of Period........................     $10.35        $9.93     $9.64    $9.43    $9.40
                                                                 ------       ------    ------   ------   ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income/(Loss)..............................       0.14         0.36      0.42(7)   0.42    0.45
  Net Realized & Unrealized Gain/(Loss) on Investments......       0.15         0.48      0.30     0.21    0.039
                                                                 ------       ------    ------   ------   ------
    Total From Investment Operations........................       0.29         0.84      0.72     0.63     0.48
                                                                 ------       ------    ------   ------   ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................      (0.14)                 (0.43)   (0.42)   (0.45)
  Distributions In Excess Of Net Investment Income..........          -            -     (0.00)(6)      -      -
  Distributions from Net Realized Gains.....................          -            -         -        -        -
  Distributions In Excess Of Net Realized Gains.............          -            -         -        -        -
  Distributions From Capital................................          -            -         -        -        -
                                                                 ------       ------    ------   ------   ------
      Total Distributions...................................      (0.14)       (0.42)    (0.43)   (0.42)   (0.45)
                                                                 ------       ------    ------   ------   ------
Net Asset Value, End of Period..............................     $10.50       $10.35     $9.93    $9.64    $9.43
                                                                 ======       ======    ======   ======   ======
Total Return(5).............................................      2.82%        8.53%     7.63%    6.76%    5.23%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period ($1,000).........................         $2           $2       $29      $11      $11
  Ratio of Operating Expenses to Average Net Assets(12).....      1.57%(2)     1.62%     1.57%    1.38%    1.14%
  Ratio of Net Investment Income to Average Net Assets......      4.01%(2)     4.05%     4.26%    4.33%    4.78%
  Portfolio Turnover Rate...................................        40%          51%       53%      52%      44%
  Ratio of Operating Expenses to Average Net Assets Without
   Credit Allowed by the
   Custodian................................................          -        1.63%(8)  1.59%(8)  1.41%(8)    N/A
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers, Expenses Absorbed and/or fees reduced by
   Credits Allowed by the Custodian.........................      3.64%(2)     2.19%(8)  2.21%(8)  2.21%(8)  2.26%
</TABLE>
    
 
   
Footnotes appear on page 71
    
 
                                       65
<PAGE>   154
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
   
  BOND & STOCK FUND   CLASS S SHARES(17)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL PERIOD
                                                                 MAY 28, 1998 -
                                                              OCTOBER 31, 1998(13)
                                                              --------------------
<S>                                                           <C>
Net Asset Value, Beginning of Period........................         $14.72
                                                                    -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investments Income....................................           0.14(7)
  Net Realized & Unrealized Loss on Investments.............          (0.87)(9)
                                                                    -------
    Total from Investment Operations........................          (0.73)
                                                                    -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................          (0.20)
  Distributions in Excess of Net Investment Income..........              -
  Distributions from Net Realized Gains.....................              -
  Distributions in Excess of Net Realized Gains.............              -
  Distributions from Capital................................              -
                                                                    -------
    Total Distributions.....................................          (0.20)
                                                                    -------
Net Asset Value, End of Period..............................         $13.79
                                                                    =======
Total Return(5).............................................        (4.66)%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period ($1,000's).......................            $36
  Ratio of Operating Expenses to Average Net Assets(12).....          1.73%(2)
  Ratio of Net Investment Income to Average Net Assets......          2.33%(2)
  Portfolio Turnover Rate...................................            80%
</TABLE>
    
 
   
Footnotes appear on page 71
    
 
                                       66
<PAGE>   155
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
   
  GROWTH & INCOME FUND   CLASS I SHARES(18)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL PERIOD
                                                                MARCH 23, 1998 -
                                                              OCTOBER 31, 1998(13)
                                                              --------------------
<S>                                                           <C>
Net Asset Value, Beginning of Period........................          $21.42
                                                                    --------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investments Income/(Loss).............................            0.11(7)
  Net Realized & Unrealized Gain/(Loss) on Investments......           (1.43)(9)
                                                                    --------
    Total from Investment Operations........................           (1.32)
                                                                    --------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................           (0.07)
  Distributions in Excess of Net Investment Income..........               -
  Distributions from Net Realized Gains.....................               -
  Distributions in Excess of Net Realized Gains.............               -
  Distributions from Capital................................               -
                                                                    --------
    Total Distributions.....................................           (0.07)
                                                                    --------
Net Asset Value, End of Period..............................          $20.03
                                                                    ========
Total Return(5).............................................         (6.18)%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period ($1,000's).......................        $185,528
  Ratio of Operating Expenses to Average Net Assets(12).....           0.62%(2)
  Ratio of Net Investment Income to Average Net Assets......           0.84%(2)
  Portfolio Turnover Rate...................................             79%
</TABLE>
    
 
   
  GROWTH & INCOME FUND   CLASS S SHARES(18)
    
 
   
<TABLE>
<CAPTION>
                                                                 FISCAL PERIOD
                                                                MARCH 23, 1998 -
                                                              OCTOBER 31, 1998(13)
                                                              --------------------
<S>                                                           <C>
Net Asset Value, Beginning of Period........................          $21.26
                                                                     -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investments Income/(Loss).............................           (0.03)(7)
  Net Realized & Unrealized Gain/(Loss) on Investments......           (1.44)(9)
                                                                     -------
    Total from Investment Operations........................           (1.47)
                                                                     -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................               -
  Distributions in Excess of Net Investment Income..........               -
  Distributions from Net Realized Gains.....................               -
  Distributions in Excess of Net Realized Gains.............               -
  Distributions from Capital................................               -
                                                                     -------
    Total Distributions.....................................               -
                                                                     -------
Net Asset Value, End of Period..............................          $19.79
                                                                     =======
Total Return(5).............................................         (6.83)%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period ($1,000's).......................         $12,245
  Ratio of Operating Expenses to Average Net Assets(12).....           1.74%(2)
  Ratio of Net Investment Income to Average Net Assets......         (0.28)%(2)
  Portfolio Turnover Rate...................................             79%
</TABLE>
    
 
   
Footnotes appear on page 71
    
 
                                       67
<PAGE>   156
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  GROWTH FUND   CLASS I SHARES
 
   
<TABLE>
<CAPTION>
                                                              FISCAL PERIOD
                                                                  ENDED        YEAR ENDED    PERIOD ENDED
                                                               OCTOBER 31,      JUNE 30,       JUNE 30,
                                                                 1998(3)        1998(1)         1997+
                                                              -------------------------------------------
<S>                                                           <C>              <C>           <C>
Net Asset Value, Beginning of Period........................      $18.56          $14.94        $14.21
                                                                --------        --------       -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income/(Loss)..............................       (0.05)(7)       (0.10)(7)      0.00(6)(7)
  Net Realized & Unrealized Gain/(Loss) on Investments......       (0.75)           5.00          3.07
                                                                --------        --------       -------
    Total From Investment Operations........................       (0.80)           4.90          3.07
                                                                --------        --------       -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................           -               -             -
  Distributions in Excess of Net Investment Income..........           -               -             -
  Distributions from Net Realized Gains.....................           -           (1.28)        (2.34)
  Distributions in Excess of Net Realized Gains.............           -               -             -
  Distributions from Capital................................           -               -             -
                                                                --------        --------       -------
    Total Distributions.....................................           -           (1.28)        (2.34)
                                                                --------        --------       -------
Net Asset Value, End of Period..............................      $17.76          $18.56        $14.94
                                                                ========        ========       =======
Total Return(5).............................................       (4.31)%        35.75%        22.73%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................    $119,351        $115,729      $126,986
  Ratio of Operating Expenses to Average Net Assets(12).....       1.26%(2)        1.36%         1.45%(2)
  Ratio of Net Investment Income/(Loss) to Average Net
   Assets...................................................       (0.78)%(2)      (0.61)%       0.03%(2)
  Portfolio Turnover Rate...................................         24%            153%          156%
  Ratio of Operating Expenses to Average Net Assets Without
   Credits Allowed by the Custodian.........................           -           1.36%(8)      1.45%(2)(8)
</TABLE>
    
 
  GROWTH FUND   CLASS S SHARES
 
   
<TABLE>
<CAPTION>
                                                              FISCAL PERIOD
                                                                  ENDED                   YEAR ENDED JUNE 30,
                                                               OCTOBER 31,    --------------------------------------------
                                                                 1998(3)       1998(1)      1997        1996        1995+
                                                              ------------------------------------------------------------
<S>                                                           <C>             <C>          <C>         <C>         <C>
Net Asset Value, Beginning of Period........................      $17.83         $14.54     $15.47      $14.11      $10.73
                                                                 -------       --------    -------     -------     -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Loss.......................................       (0.11)(7)      (0.25)(7)   (0.14)(7)   (0.19)(7)   (0.04)(7)
  Net Realized & Unrealized Gain/(Loss) on Investments......       (0.73)          4.82       1.55        3.44        3.42
                                                                 -------       --------    -------     -------     -------
    Total From Investment Operations........................       (0.84)          4.57       1.41        3.25        3.38
                                                                 -------       --------    -------     -------     -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................           -              -          -           -       (0.00)(6)
  Distributions in Excess of Net Investment Income..........           -              -          -           -           -
  Distributions from Net Realized Gains.....................           -          (1.28)     (2.34)      (1.89)      (0.00)(6)
  Distributions in Excess of Net Realized Gains.............           -              -          -           -           -
  Distributions from Capital................................           -              -          -           -           -
                                                                 -------       --------    -------     -------     -------
    Total Distributions.....................................           -          (1.28)     (2.34)      (1.89)      (0.00)
                                                                 -------       --------    -------     -------     -------
Net Asset Value, End of Period..............................      $16.99         $17.83     $14.54      $15.47      $14.11
                                                                 =======       ========    =======     =======     =======
Total Return(5).............................................       (4.71)%       34.40%     10.06%      24.54%      31.44%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................     $11,645        $13,283    $14,038     $45,652     $18,730
  Ratio of Operating Expenses to Average Net Assets(12).....       2.39%(2)       2.39%      2.45%       2.45%       2.51%
  Ratio of Net Investment Loss to Average Net Assets........       (1.91)%(2)     (1.64)%    (0.97)%     (1.24)%     (0.47)%
  Portfolio Turnover Rate...................................         24%           153%       156%        205%        233%
  Ratio of Operating Expenses to Average Net Assets Without
   Credits Allowed by the Custodian.........................           -          2.40%(8)   2.45%(8)    2.46%(8)      N/A
</TABLE>
    
 
   
Footnotes appear on page 71
    
 
                                       68
<PAGE>   157
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  EMERGING GROWTH FUND   CLASS I SHARES
 
   
<TABLE>
<CAPTION>
                                                              FISCAL PERIOD
                                                                  ENDED       YEAR ENDED   YEAR ENDED
                                                               OCTOBER 31,     JUNE 30,     JUNE 30,
                                                                 1998(3)       1998(1)       1997+
                                                              ---------------------------------------
<S>                                                           <C>             <C>          <C>
Net Asset Value, Beginning of Period........................      $19.60        $18.33       $17.52
                                                                --------        ------       ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Loss.......................................       (0.05)(7)     (0.16)(7)    (0.16)(7)
  Net Realized & Unrealized Gain/(Loss) on Investments......       (3.20)         2.50         2.47(9)
                                                                --------        ------       ------
    Total From Investment Operations........................       (3.25)         2.34         2.31
                                                                --------        ------       ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................           -             -            -
  Distributions in Excess of Net Investment Income..........           -             -            -
  Distributions from Net Realized Gains.....................           -         (1.07)       (1.50)
  Distributions in Excess of Net Realized Gains.............           -             -            -
  Distributions from Capital................................           -             -            -
                                                                --------        ------       ------
    Total Distributions.....................................           -         (1.07)       (1.50)
                                                                --------        ------       ------
Net Asset Value, End of Period..............................      $16.35        $19.60       $18.33
                                                                ========        ======       ======
Total Return(5).............................................    (16.58)%        13.25%       13.69%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period ($1,000's).......................     $12,651       $33,886      $52,199
  Ratio of Operating Expenses to Average Net Assets(12).....       1.35%(2)      1.36%        1.39%(2)
  Ratio of Net Investment Loss to Average Net Assets........     (0.90)%(2)    (0.80)%      (0.92)%(2)
  Portfolio Turnover Rate...................................         20%          112%          81%
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers and/or Fees Reduced by Credits Allowed by the
   Custodian................................................       1.36%(2)      1.36%(7)     1.39%(2)(8)
</TABLE>
    
 
  EMERGING GROWTH FUND   CLASS S SHARES
 
   
<TABLE>
<CAPTION>
                                                              FISCAL PERIOD
                                                                  ENDED                   YEAR ENDED JUNE 30,
                                                               OCTOBER 31,    -------------------------------------------
                                                                 1998(3)       1998(1)      1997        1996       1995+
                                                              -----------------------------------------------------------
<S>                                                           <C>             <C>          <C>         <C>         <C>
Net Asset Value, Beginning of Period........................      $19.86        $17.85     $19.88      $15.37      $13.02
                                                                --------        ------     ------      ------      ------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Loss.......................................       (0.12)(7)     (0.35)(7)  (0.34)(7)   (0.32)(7)   (0.10)(7)
  Net Realized & Unrealized Gain/(Loss) on Investments......       (3.07)         2.43      (0.19)       5.59        2.77
                                                                --------        ------     ------      ------      ------
    Total From Investment Operations........................       (3.19)         2.08      (0.53)       5.27        2.67
                                                                --------        ------     ------      ------      ------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................           -             -          -           -           -
  Distributions in Excess of Net Investment Income..........           -             -          -           -           -
  Distributions from Net Realized Gains.....................           -         (1.07)     (1.50)      (0.76)      (0.32)
  Distributions in Excess of Net Realized Gains.............           -             -          -           -           -
  Distributions from Capital................................           -             -          -           -           -
                                                                --------        ------     ------      ------      ------
    Total Distributions.....................................           -         (1.07)     (1.50)      (0.76)      (0.32)
                                                                --------        ------     ------      ------      ------
Net Asset Value, End of Period..............................      $15.67        $18.86     $17.85      $19.88      $15.37
                                                                ========        ======     ======      ======      ======
Total Return(5).............................................    (16.91)%        12.11%     -2.26%      34.91%      20.76%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets End of Period ($1,000's).......................      $3,753        $5,989     $8,341      $43,645     $11,840
  Ratio of Operating Expenses to Average Net Assets(12).....       2.66%(2)      2.41%      2.39%       2.39%       2.43%
  Ratio of Net Investment Loss to Average Net Assets........     (2.21)%(2)    (1.86)%     (1.92)%     (1.77)%     (1.06)%
  Portfolio Turnover Rate...................................         20%          112%        81%        131%        181%
  Ratio of Operating Expenses to Average Net Assets Without
   Fee Waivers and/or Fees Reduced by Credits Allowed by the
   Custodian................................................       2.67%(2)      2.42%(8)   2.39%(8)    2.40%(8)      N/A
</TABLE>
    
 
   
Footnotes appear on page 71
    
 
                                       69
<PAGE>   158
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  INTERNATIONAL GROWTH FUND   CLASS I SHARES
 
   
<TABLE>
<CAPTION>
                                                              FISCAL PERIOD
                                                                  ENDED       YEAR ENDED   PERIOD ENDED
                                                               OCTOBER 31,     JUNE 30,      JUNE 30,
                                                                 1998(3)       1998(1)        1997+
                                                              -----------------------------------------
<S>                                                           <C>             <C>          <C>
Net Asset Value, Beginning of Period........................      $10.16         $11.82         $9.88
                                                                --------       --------      --------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income/(Loss)..............................        0.00(6)(7)      0.09(7)         0.06(7)
  Net Realized & Unrealized Gain/(Loss) on Investments......       (1.33)         (0.69)         2.15
                                                                --------       --------      --------
    Total From Investment Operations........................       (1.33)         (0.60)         2.21
                                                                --------       --------      --------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................           -          (0.53)        (0.17)
  Distributions in Excess of Net Investment Income..........           -          (0.03)            -
  Distributions from Net Realized Gains.....................           -          (0.50)        (0.10)
  Distributions in Excess of Net Realized Gains.............           -              -             -
  Distributions from Capital................................           -              -             -
                                                                --------       --------      --------
    Total Distributions.....................................           -          (1.06)        (0.27)
                                                                --------       --------      --------
Net Asset Value, End of Period..............................       $8.83         $10.16        $11.82
                                                                ========       ========      ========
Total Return(5).............................................      (13.09)%        (3.98)%      22.76%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................     $98,554       $108,521       $95,512
  Ratio of Operating Expenses to Average Net Assets(12).....         1.32%(2)     1.36%           1.40%(2)
  Ratio of Net Investment Income to Average Net Assets......         0.04%(2)     0.81%           0.60%(2)
  Portfolio Turnover Rate...................................         41%           118%           67%
  Ratio of Operating Expenses to Average Net Assets Without
   Credits Allowed by the Custodian.........................           -          1.36%(8)      1.40%(2)(8)
</TABLE>
    
 
  INTERNATIONAL GROWTH FUND   CLASS S SHARES
 
   
<TABLE>
<CAPTION>
                                                              FISCAL PERIOD
                                                                  ENDED                  YEAR ENDED JUNE 30,
                                                               OCTOBER 31,     ----------------------------------------
                                                                 1998(3)       1998(1)     1997       1996       1995+
                                                              ---------------------------------------------------------
<S>                                                           <C>              <C>        <C>        <C>        <C>
Net Asset Value, Beginning of Period........................      $10.16        $11.77     $10.38      $9.73     $10.74
                                                                --------       -------    -------    -------    -------
 INCOME FROM INVESTMENT OPERATIONS:
  Net Investment Income/(Loss)..............................       (0.04)(7)     (0.02)(7)   (0.04)(7)   (0.03)(7)   (0.17)(7)
  Net Realized & Unrealized Gain/(Loss) on Investments......       (1.32)        (0.67)      1.53       1.20      (0.31)
                                                                --------       -------    -------    -------    -------
    Total From Investment Operations........................       (1.36)        (0.69)      1.49       1.17      (0.48)
                                                                --------       -------    -------    -------    -------
 LESS DISTRIBUTIONS:
  Dividends from Net Investment Income......................           -         (0.40)         -      (0.02)     (0.03)
  Distributions in Excess of Net Investment Income..........           -         (0.02)         -      (0.04)         -
  Distributions from Net Realized Gains.....................           -         (0.50)     (0.10)     (0.46)     (0.44)
  Distributions in Excess of Net Realized Gains.............           -             -          -          -      (0.06)
  Distributions from Capital................................           -             -          -          -          -
                                                                --------       -------    -------    -------    -------
    Total Distributions.....................................           -         (0.92)     (0.10)     (0.52)     (0.52)
                                                                --------       -------    -------    -------    -------
Net Asset Value, End of Period..............................       $8.80        $10.16     $11.77     $10.38      $9.73
                                                                ========       =======    =======    =======    =======
Total Return(5).............................................    (13.47)%       (4.94)%     14.61%     12.29%     -4.61%
 RATIOS/SUPPLEMENTAL DATA:
  Net Assets, End of Period ($1,000's)......................      $7,455        $9,599    $11,991    $38,900    $11,120
  Ratio of Operating Expenses to Average Net Assets(12).....         2.50%(2)    2.41%      2.40%      2.52%      2.44%
  Ratio of Net Investment Income to Average Net Assets......       (1.14)%(2)  (0.23)%    (0.40)%    (0.29)%    (0.13)%
  Portfolio Turnover Rate...................................         41%          118%        67%       125%        81%
  Ratio of Operating Expenses to Average Net Assets Without
   Credits Allowed by the Custodian.........................             -       2.40%(8)   2.40%(8)   2.52%(8)     N/A
</TABLE>
    
 
   
Footnotes appear on page 71
    
 
                                       70
<PAGE>   159
- --------------------------------------------------------------------------------
 
   
FOOTNOTES TO FINANCIAL HIGHLIGHTS
 
<TABLE>
<C>    <S>
  (1)  On March 23, 1998, WM Advisors, Inc. replaced Sierra
       Investment Advisers Corporation as investment advisor to the
       Funds.
  (2)  Annualized.
  (3)  Fiscal year end changed to October 31.
  (5)  Total return is not annualized for periods less than one
       year. The total returns would have been lower if certain
       fees had not been waived by the investment advisor or if
       fees had not been reduced by credits allowed by the
       custodian.
  (6)  Amount represents less than $0.01 per share.
  (7)  Per share numbers have been calculated using the average
       shares method.
  (8)  The ratio and per share numbers include custodian fees
       before reduction by credits allowed by the custodian as
       required by amended disclosure requirements effective
       September 1, 1995.
  (9)  The amount shown may not accord with the change in aggregate
       gains and losses of portfolio securities due to the timing
       of sales and redemptions of Fund shares.
 (11)  Formerly, Composite Cash Management Company Money Market
       Portfolio.
 (12)  Ratio of operating expenses to average net assets includes
       expenses paid indirectly beginning in fiscal year 1995.
 (13)  From the commencement of offering shares.
 (14)  Formerly, Composite U.S. Government Securities, Inc.
 (15)  Formerly, Composite Income Fund, Inc.
 (16)  Formerly, Tax-Exempt Bond Fund, Inc.
 (17)  Formerly, Composite Bond & Stock Fund, Inc.
 (18)  Formerly, Composite Growth & Income Fund.
    +  On July 1, 1994, the Funds commenced selling Class S shares.
       Those shares in existence prior to July 1, 1994 were
       designated Class A shares. On July 25, 1996, the Funds
       commenced selling Class I shares.
</TABLE>
    
 
                                       71
<PAGE>   160

For more information about the WM Group of Funds

The WM Group's Statement of Additional Information (SAI) and Annual and 
Semi-annual Reports to shareholders include additional information about the 
Funds and Portfolios. The SAI is incorporated by reference into this 
prospectus, which means they are part of this prospectus for legal purposes. 
The Funds' and Portfolio's Annual Reports discuss the market conditions and 
investment strategies that significantly affected performance during the last 
fiscal year. You may obtain free copies of these materials, request other 
information about the WM Group of Funds, or make shareholder inquiries, by 
contacting your financial advisor or by calling toll-free at 1-800-222-5852.

You may review and copy information about the Funds and Portfolios, including 
the SAI, at the Securities and Exchange Commission's public reference room in 
Washington, D.C. You may call the Commission at 1-800-SEC-0330 for information 
about the operation of the public reference room. You may also access reports 
and other information about the Funds and Portfolios on the Commission's 
Internet site at http://www.sec.gov. You may obtain copies of this information, 
with payment of a duplication fee, by writing the Public Reference Section of 
the Commission, Washington, D.C. 20549-6009. You may need to refer to the 
following file number:


<TABLE>
<S>                                <C>                                      <C>
Money Market Fund                  California Money Fund

Tax-Exempt Money Market Fund       Short Term High Quality Bond Fund

U.S. Government Securities         Target Maturity 2002 Fund
Fund

Income Fund                        California Municipal Fund

High Yield Fund                    California Insured Intermediate           Strategic Growth Portfolio
                                   Municipal Fund

Tax-Exempt Bond Fund               Florida Insured Municipal Fund            Conservative Growth Portfolio

Bond & Stock Fund                  Growth Fund                               Balanced Portfolio

Growth & Income Fund               Emerging Growth Fund                      Flexible Income Portfolio

Northwest Fund                     International Growth Fund                 Income Portfolio

File No. 333-36941                 File No. 33-27489                         File No. 333-01999
</TABLE>
<PAGE>   161
                                WM GROUP OF FUNDS
                          1201 THIRD AVENUE, SUITE 1400
                            SEATTLE, WASHINGTON 98101
                                  800-222-5852

   
  STATEMENT OF ADDITIONAL INFORMATION
  March 1, 1999
    

WM Group of Funds


MONEY FUNDS                                
    MONEY MARKET FUND                      
    TAX-EXEMPT MONEY MARKET FUND           
    CALIFORNIA MONEY FUND                  
                                           
                                           
FIXED-INCOME FUNDS                         
    SHORT TERM HIGH QUALITY BOND FUND      
    TARGET MATURITY 2002 FUND              
    U.S. GOVERNMENT SECURITIES FUND        
    INCOME FUND                            
    HIGH YIELD FUND                        
                                           
MUNICIPAL FUNDS                            
    TAX-EXEMPT BOND FUND               
    CALIFORNIA MUNICIPAL FUND
    CALIFORNIA INSURED INTERMEDIATE
        MUNICIPAL FUND
    FLORIDA INSURED MUNICIPAL FUND

EQUITY FUNDS                         
    BOND & STOCK FUND                
    GROWTH & INCOME FUND             
    NORTHWEST FUND                   
    GROWTH FUND                      
    EMERGING GROWTH FUND             
    INTERNATIONAL GROWTH FUND        
                                     
STRATEGIC ASSET MANAGEMENT PORTFOLIOS
    STRATEGIC GROWTH PORTFOLIO       
    CONSERVATIVE GROWTH PORTFOLIO    
    BALANCED PORTFOLIO               
    FLEXIBLE INCOME PORTFOLIO        
    INCOME PORTFOLIO                 

   
      This Statement of Additional Information (the "SAI") supplements the
  information contained in the current Prospectus of the WM Group of Funds
  listed above dated March 1, 1999 (the "Prospectus"), and should be read in
  conjunction with such Prospectus.
    

      The Money Market, Tax-Exempt Money Market, High Yield, Income, U.S.
  Government Securities, Tax-Exempt Bond, Bond & Stock, Growth & Income and
  Northwest Funds are series of WM Trust I (the "WM Trust I Funds"), a
  Massachusetts business trust organized on September 19, 1997. The California
  Money, Short Term High Quality Bond, Target Maturity 2002, California
  Municipal, California Insured Intermediate Municipal, Florida Insured
  Municipal, Growth, International Growth and Emerging Growth Funds are series
  of WM Trust II (the "WM Trust II Funds"), a Massachusetts business trust
  organized on February 22, 1989. The WM Trust I Funds and WM Trust II Funds are
  collectively referred to in this SAI as the "Funds." The Strategic Growth,
  Conservative Growth, Balanced, Flexible Income and Income Portfolios,
  collectively referred to in this SAI as the "Portfolios," are series of WM
  Strategic Asset Management Portfolios, a Massachusetts business trust
  organized on March 26, 1996. In this SAI, WM Trust I, WM Trust II and WM
  Strategic Asset Management Portfolios are referred to as the "Trusts."
<PAGE>   162
   
      The Prospectus may be obtained without charge by writing to WM Shareholder
  Services, Inc. ("Shareholder Services") or by calling Shareholder Services at
  800-222-5852. This SAI provides information applicable to the Class A, Class
  B, Class I and Class S shares of each of the Funds (except for the Target
  Maturity 2002 Fund, which offers only Class A shares), and the Class A and
  Class B shares of each of the Portfolios. This SAI, although not in itself a
  prospectus, is incorporated by reference into the Prospectus in its entirety.
    


                                       -2-
<PAGE>   163
                                    CONTENTS
   
MANAGEMENT............................................................    4
INVESTMENT OBJECTIVES AND POLICIES....................................   21
INVESTMENT RESTRICTIONS...............................................   45
PORTFOLIO TURNOVER....................................................   54
PORTFOLIO TRANSACTIONS................................................   55
NET ASSET VALUE.......................................................   58
HOW TO BUY AND REDEEM SHARES..........................................   59
HOW TO EXCHANGE SHARES................................................   64
DETERMINATION OF PERFORMANCE..........................................   64
TAXES.................................................................   74
DISTRIBUTOR...........................................................   80
APPENDIX..............................................................   85
    


                                       -3-
<PAGE>   164
                                   MANAGEMENT

TRUSTEES AND OFFICERS

    The Trusts are governed by a common Board of Trustees which oversees the
Trusts' activities and is responsible for protecting the interests of
shareholders. The names, addresses and birthdates of the Trustees and executive
officers of the Trusts, together with information as to their principal business
occupations, are set forth below. The executive officers of the Trusts are
employees of organizations that provide services to the Funds and Portfolios
offered by the Trusts. Each Trustee who is an "interested person" of the Trusts,
as defined in the Investment Company Act of 1940, as amended (the "1940 Act"),
is indicated by an asterisk.

TRUSTEES:

DAVID E. ANDERSON (11/17/26)
Trustee
17960 Seabreeze Drive
Pacific Palisades, California 90272

Retired in 1988 from GTE California, Inc. after 40 years of service. President
and CEO from 1979 to 1988. Director of Barclay's Bank of California until 1988.
Currently involved in the following charitable organizations as a director on
the following boards: Board chairman, Children's Bureau Foundation; Board
member, Upward Bound House of Santa Monica; Past campaign chairman of United
Way; Former chairman, Los Angeles Area Chamber of Commerce.

WAYNE L. ATTWOOD, MD (1/28/29)
Trustee
2931 S. Howard
Spokane, Washington 99203

Retired doctor of internal medicine and gastroenterology. Former president,
Medical Staff--Sacred Heart Medical Center; former president of Spokane Society
of Internal Medicine; and former president of Spokane Physicians for Social
Responsibility.

ARTHUR H. BERNSTEIN, ESQ. (6/8/25)
Trustee
11661 San Vicente Blvd., Suite 701
Los Angeles, California 90049

President of Bancorp Capital Group, Inc. and Bancorp Venture Capital, Inc.
Previously served on the board of directors of Great Western Leasing
Corporation, subsidiary of Great Western

                                       -4-
<PAGE>   165
Financial Corporation ("GWFC"), until the subsidiary was sold in 1987. Director
of Ryder System, Inc.; chairman of the board of trustees of the California
Family Studies Center and Phillips Graduate Institute since 1984.

KRISTIANNE BLAKE (1/22/54)
Trustee
705 W. 7th, Suite D
Spokane, Washington 99204

CPA specializing in personal financial and tax planning since 1975. Served as a
partner with the accounting firm of Deloitte, Haskins & Sells prior to starting
own firm in 1987. Community activities include: United Way of Spokane County -
board chair; YMCA of the Inland Northwest - treasurer; Junior League of Spokane
- - past president; Spokane Intercollegiate Research & Technology Institute
Foundation - board member; Spokane Joint Center for Higher Education board
member; Spokane Area Chamber of Commerce - board member; and St. George's School
board member.

   
[HERSCHEL CARDIN (__/__/__)
Trustee
Address
Address

TERM TO COMMENCE UPON THE COMPLETION OF THE TRANSACTIONS CONTEMPLATED IN THE
PLAN OF REORGANIZATION FILED WITH THE SEC WITH THE WM TRUST I AND WM TRUST II
REGISTRATION STATEMENTS ON FORM N-14 ON NOVEMBER 6, 1998.

Former director of investments for Home Savings of America.]
    


EDMOND R. DAVIS, ESQ. (9/24/28)
Trustee
550 South Hope Street, 21st Floor
Los Angeles, California 90071-2604

Joined the law firm of Brobeck, Phleger & Harrison as a partner in 1987,
responsible for estate planning, and trusts and estate matters in the Los
Angeles office. Prior to joining the firm, had a similar position for 20 years
with the law firm of Overton, Lyman & Prince in Los Angeles. His expertise has
been recognized in Who's Who in California, the Best Lawyers of America and
Who's Who in American Law.

JOHN W. ENGLISH (3/27/33)
Trustee
50 H New England Ave.


                                       -5-
<PAGE>   166
P.O. Box 640
Summit, New Jersey 07902-0640

Retired vice president and chief investment officer of the Ford Foundation (a
non-profit charitable organization). Chairman of the board and director, the
China Fund, Inc., (closed-end mutual fund). Director, Paribas Trust for
Institutions (an open-end mutual fund). Trustee, Retail Property Trust (a
company providing management services for a shopping center).

*ANNE V. FARRELL (7/17/35)
Trustee
425 Pike Street, Suite 510
Seattle, Washington 98101

Joined the Seattle Foundation (a charitable foundation) in 1980 as executive
vice president. Became president in 1984. Also serves on the board of Washington
Mutual Bank, Inc. ("Washington Mutual") and Blue Cross of Washington and Alaska.
Listed in Who's Who in America. Past President of the Nature Conservancy of
Washington, Lakeside School and Seattle Rotary Club. Currently a Regent at
Seattle University and president of the Rainier Club in Seattle.

   
CARROL R. MCGINNIS (__/__/__)
Trustee
9225 Katy Freeway, Suite 205
Houston, TX 77024

TERM TO COMMENCE UPON THE COMPLETION OF THE TRANSACTIONS CONTEMPLATED IN THE
PLAN OF REORGANIZATION FILED WITH THE SEC WITH THE WM TRUST I AND WM TRUST II
REGISTRATION STATEMENTS ON FORM N-14 ON NOVEMBER 6, 1998.

Founder, McGinnis Investments, since 1994. Prior thereto, served in various
positions with Transamerica Fund Management Company and its predecessor
companies from 1969-1993, including as president and chief operating officer.
    

*MICHAEL K. MURPHY  (1/14/37)
Trustee
PO Box 3366
Spokane, Washington 99220-3366

President and CEO of CPM Development Corporation (a holding company which
includes Central Pre-mix Concrete Company Inland Asphalt Co., Central Pre-Mix
Prestress Co., and Interstate Concrete & Asphalt Co.). Member of the board of
directors for Washington Mutual. Former president and director of Inland Empire
Chapter - Associated General Contractors. Former director of National Aggregates
Associates.


                                       -6-
<PAGE>   167
ALFRED E. OSBORNE, JR. PH.D. (12/7/44)
Trustee
110 Westwood Plaza, Suite C305
Los Angeles, California 90095-1481
University professor, researcher and administrator at University of California
Los Angeles since 1972. Director, Times Mirror Company (newspaper publisher),
United States Filter Corporation, Nordstrom Inc. (clothing retailer) and
Greyhound Lines, Inc. (bus company). Independent general partner, Technology
Funding Venture Partners V, and former Governor of the National Association of
Securities Dealers, Inc.

*WILLIAM G. PAPESH  (1/21/43)
President and Trustee
601 W. Main Avenue
Suite 300
Spokane, WA 99201

President and director of WM Advisors, Inc. (the "Advisor"), WM Shareholder
Services, Inc. ("Shareholder Services"), WM Funds Distributor, Inc. (the
"Distributor") and WM Fund Services, Inc. (a registered investment adviser and
broker/dealer).

DANIEL L. PAVELICH (9/12/44)
Trustee
Two Prudential Plaza
180 North Stetson Avenue, Suite 4300
Chicago, Illinois 60601

Chairman and CEO of BDO Seidman, a leading national accounting and consulting
firm. Worked in Seidman's Spokane office for 27 years and is a former presiding
member of the firm's board of directors. A member of the American Institute of
CPAs and served as a vice president of the Washington Society of CPAs' board of
directors.


                                       -7-
<PAGE>   168
JAY ROCKEY (1/5/28)
Trustee
2121 Fifth Avenue
Seattle, Washington 98121

Founder and chairman of The Rockey Company, a public relations and marketing
communications consulting firm with headquarters in Seattle and offices in
Portland and Spokane. Founder and director of RXL Pulitzer, an international
multimedia company that is a joint venture with Pulitzer Publishing Co. of St.
Louis. History includes managing New York City public relations for Aluminum
Company of America, director of public relations for the Seattle World's Fair
and the presidency of the Public Relations Society of America. He is vice
president of the Rainier Club and trustee of the Downtown Seattle Association.

   
MILTON O. SCHAPIRO (__/__/__)
Trustee
4535 Lenox Avenue
Sherman Oaks, CA  91423

TERM TO COMMENCE UPON THE COMPLETION OF THE TRANSACTIONS CONTEMPLATED IN THE
PLAN OF REORGANIZATION FILED WITH THE SEC WITH THE WM TRUST I AND WM TRUST II
REGISTRATION STATEMENTS ON FORM N-14 ON NOVEMBER 6, 1998.

Dean of the College of Letters, Arts and Sciences and Professor of Economics,
University of Southern California, since 1991. Prior thereto, Professor of
Economics, Williams College, 1980-1991.
    

RICHARD C. YANCEY (5/28/26)
Lead Trustee
535 Madison Avenue
New York, New York 10022

Investment Banker - Warburg Dillon Read LLC, New York City, 1952 through 1992.
Served as vice president, managing director and director and senior advisor at
Warburg Dillon Read LLC, Member of the boards of directors of AdMedia Partners,
Inc., CapMAC Holdings Inc., Fiberite, Inc., The Scoreboard, Inc., and Czech and
Slovak American Enterprise Fund.

OFFICERS:

GENE BRANSON (12/26/45)
Vice President
11th Floor
601 W. Main Street
Spokane, WA 99201


                                       -8-
<PAGE>   169
   
Senior vice president and director of the Advisor and Shareholder Services.
    

MONTE D. CALVIN, CPA (1/22/44)
Senior Vice President and Chief Financial Officer
601 W. Main Avenue
Suite 300
Spokane, WA 99201

   
Executive vice president and director of Shareholder Services; Director of the
Advisor and the Distributor.
    

SANDY CAVANAUGH (5/10/54)
Senior Vice President
1631 Broadway
Sacramento, CA 95818

   
First vice president and director of the Distributor since September 1997.
Director of Advisor and Shareholder Services. Prior to joining the Distributor,
Ms. Cavanaugh held senior level positions with AIM Funds Distributor, First
Interstate Investments and ASB Financial Services.
    

JOHN T. WEST, CPA (1/21/55)
Vice President, Secretary and Compliance Officer
601 W. Main Avenue
Suite 300
Spokane, WA 99201

Vice president of Shareholder Services.

    Each of the Trustees and officers of the Trusts listed above holds the same
position(s) with all three Trusts and is also a trustee or officer of WM
Variable Trust (the "Variable Trust"). The Variable Trust is an investment
company advised by the Advisor.

    REMUNERATION. No Trustee who is a director, officer or employee of the
Advisor or its affiliates receives any compensation from the Trusts for serving
as Trustee of the Trusts. The Trusts, together with the Variable Trust, pay each
Trustee who is not a director, officer or employee of the Advisor or its
affiliates a fee of $18,000 per annum plus $3,000 per Board meeting attended in
person and $1,000 per Board meeting attended by telephone, and reimburses each
such Trustee for travel and out-of-pocket expenses. The Lead Trustee receives an
additional fee of $500 per month. The Chairman of each committee receives a fee
of $500 per committee meeting. Officers of the Trusts receive no direct
remuneration in such capacity from the Trusts. Officers and Trustees of the
Trusts who are employees of the Advisor or its affiliates may be considered to
have received remuneration indirectly.


                                       -9-
<PAGE>   170
   
    Wayne L. Attwood, M.D., Kristianne Blake, Anne V. Farrell, Michael K.
Murphy, William G. Papesh, Daniel L. Pavelich, Jay Rockey and Richard C. Yancey
became Trustees of WM Trust II and WM Strategic Asset Management Portfolios on
December 23, 1997. Arthur H. Bernstein, Esq., David E. Anderson, Edmond R.
Davis, Esq., John W. English and Alfred E. Osborne, Jr. Ph.D became trustees of
WM Trust I on December 23, 1997. [Herschel Cardin, Carrol R. McGinnis and Morton
O. Schapiro became trustees upon the completion of the transactions included in
the Plan of Reorganization filed with the WM Trust I and WM Trust II
Registration Statement on Form N-14 dated November 6, 1998.] The WM Trust I
Funds other than the High Yield Fund are successors to the following Washington
corporations, or series thereof, which commenced operations in the years
indicated, which made up the group of mutual funds known as the "Composite
Funds."
    

Composite U.S. Government Securities, Inc. (1982)
Composite Income Fund, Inc. (1975)
Composite Growth & Income Fund, a series of Composite Equity Series, Inc. (1949)
Composite Money Market Portfolio, a series of Composite Cash Management Company
(predecessor of the Money Market Fund) (1979)
Composite Tax-Exempt Portfolio, a series of Composite Cash Management Company
(predecessor of the Tax-Exempt Money Market Fund) (1979)
Composite Tax-Exempt Bond Fund, Inc. (1976)
Composite Northwest Fund, Inc. (1986)
Composite Bond & Stock Fund, Inc. (1939)

    Each of the Composite Funds was reorganized as a series of WM Trust I on
March 20, 1998. In connection with this reorganization, the Trust, whose name
was previously "The Composite Funds" and which conducted no operations prior to
that date, changed its name to its current name. The High Yield fund was
organized on March 23, 1998.

    Prior to March 20, 1998, the name of WM Trust II was "Sierra Trust Funds"
and the name of WM Strategic Asset Management Portfolios was "Sierra Asset
Management Portfolios." These Trusts were part of a family of mutual funds known
as the "Sierra Funds."

    The reorganizations and name changes described in the foregoing paragraphs
were part of an overall restructuring of the Composite Funds and the Sierra
Funds into a combined mutual fund family known as the WM Group of Funds. This
restructuring also consisted of the replacement of Sierra Investment Advisors
Corporation as investment advisor to the Sierra Funds with WM Advisors, Inc.
(formerly known as Composite Research & Management Co.), the advisor to the
Composite Funds, the election of the Directors of the Composite Funds as
Trustees of WM Trust I, WM Trust II and WM Strategic Asset Management Portfolios
and the election of the independent Trustees of WM Trust II and WM Strategic
Asset Management Portfolios as Trustees of WM Trust I.


                                      -10-
<PAGE>   171
   
    The following table shows the aggregate compensation paid to each of the
Trusts' Trustees by each Fund or Portfolio (or, in the case of the WM Trust I
Funds, by the predecessor Composite Funds) for the most recent fiscal year and
by the "Fund Complex" for calendar 1998. The Fund Complex consists of the Funds
and Portfolios, together with the Funds within the Variable Trust, WM Prime
Income Fund, a closed-end investment company that was liquidated in August, 1998
(the "Prime Income Fund") and Composite Deferred Series, Inc., an investment
company for which WM Advisors, Inc. serves as advisor. None of the Trusts has
any plan which would pay pension or retirement benefits to any Trustee.
    


                                      -11-
<PAGE>   172
                                WM GROUP OF FUNDS
                               COMPENSATION TABLE

   
<TABLE>
<CAPTION>
                                                                            Short-                                          
                                                 Tax-                        Term                      U.S.                 
                                                Exempt                       High        Target       Govern-               
                                   Money         Money      California     Quality      Maturity       ment                 
                                   Market       Market         Money         Bond         2002      Securities     Income
Trustee                             Fund         Fund          Fund          Fund         Fund         Fund         Fund

<S>                                <C>          <C>         <C>            <C>          <C>         <C>            <C> 
David E. Anderson                   $___         $___          $___          $___         $___         $___          $___

Wayne L. Attwood, M.D.

Arthur H. Bernstein, Esq.+

Kristianne Blake

Edmond R. Davis, Esq.

John W. English

Anne V. Farrell

Michael K. Murphy

Alfred E. Osborne, Jr., Ph.D.

William G. Papesh

Daniel L. Pavelich

Jay Rockey

Richard C. Yancey
</TABLE>
    



   
<TABLE>
<CAPTION>
                                                                              California                                   
                                                                                Insured                                    
                                                    Tax-                        Inter-          Florida       Bond
                                      High         Exempt      California       mediate         Insured        &
                                      Yield         Bond        Municipal      Municipal       Municipal     Stock
Trustee                               Fund          Fund          Fund           Fund             Fund        Fund
<S>                                   <C>          <C>         <C>            <C>              <C>          <C>    
David E. Anderson                     $___         $___         $  ___        $  ___           $  ___       $   ___

Wayne L. Attwood, M.D.

Arthur H. Bernstein, Esq.+

Kristianne Blake

Edmond R. Davis, Esq.

John W. English

Anne V. Farrell

Michael K. Murphy

Alfred E. Osborne, Jr., Ph.D.

William G. Papesh

Daniel L. Pavelich

Jay Rockey

Richard C. Yancey
</TABLE>
    


   
<TABLE>
<CAPTION>
                                     Growth &                 International                     Emerging      Strategic
                                      Income       Growth        Growth        Northwest         Growth         Growth
Trustee                                Fund         Fund          Fund           Fund             Fund        Portfolio
<S>                                   <C>          <C>         <C>            <C>              <C>             <C>    
David E. Anderson                     $___         $___         $  ___        $  ___           $  ___          $   ___

Wayne L. Attwood, M.D.

Arthur H. Bernstein, Esq.+

Kristianne Blake

Edmond R. Davis, Esq.

John W. English

Anne V. Farrell

Michael K. Murphy

Alfred E. Osborne, Jr., Ph.D.

William G. Papesh

Daniel L. Pavelich

Jay Rockey

Richard C. Yancey
</TABLE>
    



                                      -12-
<PAGE>   173
   
<TABLE>
<CAPTION>
                                                                                                 Total Compensation
                                                                                                   From the Fund
                                    Conservative                    Flexible                          Complex*
                                       Growth         Balanced       Income        Income           for Calendar
        Trustee                      Portfolio        Portfolio    Portfolio     Portfolio              1998
<S>                                 <C>               <C>          <C>           <C>             <C> 
David E. Anderson                      $___             $___         $___           $___                $___

Wayne L. Attwood, M.D.

Arthur H. Bernstein, Esq.+

Kristianne Blake

Edmond R. Davis, Esq.

John W. English

Anne V. Farrell

Michael K. Murphy

Alfred E. Osborne, Jr., Ph.D.

William G. Papesh

Daniel L. Pavelich

Jay Rockey

Richard C. Yancey
</TABLE>
    

   
+   Includes compensation deferred pursuant to a deferred compensation plan. The
    total amount of deferred compensation payable to Mr. Bernstein as of
    December 31, 1998 was $______ including income earned on deferred amounts.
    

*   In the case of WM Trust I, includes compensation from predecessor Composite
    Funds.

   
    During the fiscal year ended October 31, 1998, WM Advisors reimbursed the
Funds and Portfolios in the amount of $_____ for certain expenses associated
with special meetings of the Board, held with regard to the contemplation of the
sale of The Griffin Funds, Inc. into the WM Group of Funds. As of December 31,
1998, the Trustees and officers of the Trusts owned, in the aggregate, _____
shares of the Balanced Portfolio, _____ of the Tax-Exempt Money Market Fund and
[less than 1%] of the outstanding shares of any of the other Portfolios or the
Funds. In addition, as of December 31, 1998, except as noted below, to the
knowledge of the Trusts, no shareholders owned of record or beneficially 5% or
more of the outstanding shares of the indicated classes of the Funds or
Portfolios:
    


   
                           [TO BE ADDED BY AMENDMENT.]
    


                                      -13-
<PAGE>   174

    ADVISOR

   
    The Funds and Portfolios are managed by the Advisor. The Advisor has
delegated portfolio management responsibilities in respect of the Tax-Exempt
Bond, California Municipal, California Insured Intermediate Municipal, Florida
Insured Municipal, Growth and International Growth Funds to sub-advisors.
    

    MANAGEMENT FEES. For the three most recent fiscal years the Funds and
Portfolios paid the Advisor or its affiliates the following management fees:


   
<TABLE>
<CAPTION>
                                                             Fiscal Year Ended October 31, 1998    
                                                            -------------------------------------- 
                                                            Fees Before                  Expenses  
                                                               Waiver     Fees Waived   Reimbursed 
<S>                                                         <C>           <C>           <C>        
    Money Market Fund***                                    $     --      $     --      $     --   
    Tax-Exempt Money Market Fund***                               --            --            --   
    California Money Fund*                                        --            --            --   
    Short Term High Quality Bond Fund*                            --            --            --   
    Target Maturity 2002 Fund*                                    --            --            --   
    U.S. Government Securities Fund***                            --            --            --   
    Income Fund***                                                --            --            --   
    High Yield Fund**                                             --            --            --   
    Tax-Exempt Bond Fund***                                       --            --            --   
    California Municipal Fund*                                    --            --            --   
    California Insured Intermediate Municipal Fund*               --            --            --   
    Florida Insured Municipal Fund*                               --            --            --   
    Bond & Stock Fund                                             --            --            --   
    Growth & Income Fund                                          --            --            --   
    Northwest Fund***                                             --            --            --   
    Growth Fund*                                                  --            --            --   
    Emerging Growth Fund*                                         --            --            --   
    International Growth Fund*                                    --            --            --   
    Strategic Growth Portfolio*                                   --            --            --   
    Conservative Growth Portfolio*                                --            --            --   
    Balanced Portfolio*                                           --            --            --   
    Flexible Income Portfolio*                                    --            --            --   
    Income Portfolio*                                             --            --            --   
</TABLE>                                                    
    

   
*   Fiscal Period from June 30, 1998 through October 31, 1998.
    

   
**  Commenced operations on ____.
    

   
*** Fiscal Period from January 1, 1998 through October 31, 1998.
    


                                      -14-
<PAGE>   175
<TABLE>
<CAPTION>
                                                           Fiscal Year Ended June 30, 1998      
                                                       --------------------------------------   
                                                       Fees Before                  Expenses    
                                                         Waiver      Fees Waived   Reimbursed   
                                                       -----------   -----------   ----------   
<S>                                                    <C>           <C>           <C>          
    California Money Fund                              $  188,184    $   70,002    $        0   
    Short Term High Quality Bond Fund                     145,180       133,982             0   
    Target Maturity 2002 Fund                               6,596        33,075        17,651   
    California Municipal Fund                           2,010,319       656,426             0   
    California Insured Intermediate Municipal Fund        380,528       246,808             0   
    Florida Insured Municipal Fund                        146,555       140,651           396   
    Growth Fund                                         2,739,222             0             0   
    International Growth Fund                           1,354,934             0        29,113   
    Emerging Growth Fund                                2,214,151         3,472             0   
    Strategic Growth Portfolio                             91,196        86,276         1,754   
    Conservative Growth Portfolio                         438,904       116,516        19,099   
    Balanced Portfolio                                    323,735       107,755        11,970   
    Flexible Income Portfolio                              26,686        35,116        13,939   
    Income Portfolio                                       22,941        34,864        11,403   
</TABLE>                                               

<TABLE>
<CAPTION>
                                                            Fiscal Year Ended 1997
                                                    --------------------------------------
                                                                                 Expenses
                                                     Fees Paid    Fees Waived   Reimbursed
                                                    ----------    -----------   ----------
<S>                                                 <C>           <C>           <C>       
Money Market Fund*                                  $1,148,906    $        0    $   98,432
Tax-Exempt Money Market Fund*                       $  143,965    $        0    $   45,307
California Money Fund**                             $  187,084    $  135,495    $        0
Short Term High Quality Bond Fund**                 $  153,348    $  153,348    $   40,836
Target Maturity 2002 Fund**                         $    7,756    $    7,756    $   59,718
U.S. Government Securities Fund*                    $  769,591    $        0    $        0
Income Fund*                                        $  553,562    $        0    $        0
Tax-Exempt Bond Fund*                               $  987,356    $        0    $        0
California Municipal Fund**                         $2,063,242    $1,080,813    $        0
California Insured Intermediate Municipal Fund**    $  398,681    $  350,384    $        0
Florida Insured Municipal Fund**                    $  173,618    $  173,618    $   22,193
Bond & Stock Fund***                                $1,912,341    $        0    $        0
Growth & Income Fund***                             $1,630,777    $        0    $        0
Growth Fund**                                       $2,418,645    $        0    $        0
International Growth Fund**                         $1,444,004    $        0    $        0
Northwest Fund***                                   $1,538,183    $  137,944    $        0
</TABLE>


                                      -15-
<PAGE>   176
<TABLE>
<S>                                                    <C>           <C>           <C>       
Emerging Growth Fund**                                 $2,600,399    $        0    $        0
Strategic Growth Portfolio**                           $   36,642    $    6,241    $   41,371
Conservative Growth Portfolio**                        $  260,044    $   54,435    $   98,600
Balanced Portfolio**                                   $  188,577    $   40,744    $   82,121
Flexible Income Portfolio**                            $   19,886    $    4,470    $   34,312
Income Portfolio**                                     $   18,539    $    4,476    $   33,580
</TABLE>

+        Fiscal year ended 12/31

**       Fiscal year ended 6/30

***      Fiscal year ended 10/31


<TABLE>
<CAPTION>
                                                               Fiscal Year Ended 1996           
                                                       --------------------------------------   
                                                                                    Expenses    
                                                       Fees Paid     Fees Waived   Reimbursed   
                                                       ----------    -----------   ----------   
<S>                                                    <C>           <C>           <C>          
Money Market Fund*                                     $  916,867    $        0    $  202,612   
Tax-Exempt Money Market Fund*                          $  139,482    $        0    $   47,274   
California Money Fund**                                $  206,796    $  148,062    $        0   
Short Term High Quality Bond Fund**                    $  262,885    $  262,885    $   13,583   
Target Maturity 2002 Fund**                            $    7,915    $    7,915    $   47,054   
U.S. Government Securities Fund*                       $  984,485    $        0    $        0   
Income Fund*                                           $  599,008    $        0    $        0   
Tax-Exempt Bond Fund*                                  $1,065,379    $        0    $        0   
California Municipal Fund**                            $2,233,979    $1,398,796    $        0   
California Insured Intermediate Municipal Fund **      $  393,599    $  393,599    $   47,057   
Florida Insured Municipal Fund**                       $  201,769    $  201,769    $   74,295   
Bond & Stock Fund***                                   $1,555,733    $        0    $        0   
Growth & Income Fund***                                $1,065,507    $        0    $        0   
Growth Fund**                                          $2,023,665    $        0    $        0   
International Growth Fund**                            $1,062,220    $        0    $        0   
Northwest Fund***                                      $1,123,204    $  166,941    $        0   
Emerging Growth Fund**                                 $2,464,903    $        0    $        0   
</TABLE>                                               

   
*        Fiscal year ended 12/31
    
   
**       Fiscal year ended 6/30
    
   
***      Fiscal year ended 10/31
    


                                      -16-
<PAGE>   177
   
SUB-ADVISORY FEES

    The Advisor retains only the net amount of the management fees paid to it 
after the sub-advisory fees described below are paid to the sub-advisors. The 
Advisor pays to the sub-advisors for the funds listed below a monthly fee at an 
annual rate of the following percentages of the average net assets of each such 
Fund:

    SUBADVISOR/FUNDS                             FEES
    ----------------------------------------------------------------------------

VAN KAMPEN
    California Municipal Fund .................. 0.20% of the first $150 million
                                                 0.15% thereafter

    Florida Insured Municipal Fund ............. 0.20% of the first $75 million
                                                 0.125% thereafter

    California Insured Intermediate Municipal .. 0.20% of the first $75 million
      Fund                                       0.125% thereafter

    Tax-Exempt Bond Fund ....................... 0.10% of average daily net 
                                                 assets

JANUS
    Growth Fund ................................ 0.55% of first $100 million
                                                 0.50% thereafter

WARBURG
    International Growth Fund .................. 0.50% of average daily net 
                                                 assets
    


   
    The subadvisory agreements for the Growth Fund with Janus, for the
International Growth Fund with Warburg and for California Municipal Fund, the
Florida Insured Municipal Fund and the California Insured Intermediate Fund with
Van Kampen each took effect on March 20, 1998. The subadvisory agreement for the
Tax-Exempt Bond Fund with Van Kampen took effect on January 1, 1998.
    

For the three most recent fiscal years, the Advisor or its affiliates paid the
sub-advisors the following sub-advisory fees:

   
<TABLE>
<CAPTION>
                                                      Fees Paid       Fees Paid      Fees Paid    
                                                     Fiscal Year     Fiscal Year    Fiscal Year   
                                                      Ended Oct.      Ended June       Ended      
                                                        1998*            1998           1997      
<S>                                                  <C>              <C>           <C>           
California Money Fund                                 $               $   36,881    $   70,156    
California Municipal Fund                                                580,166       637,702    
California Insured Intermediate Municipal Fund                           126,152       144,771    
Florida Insured Municipal Fund                                            49,884        63,134    
Growth Fund                                                            1,473,318     1,374,940    
International Growth Fund                                                753,964       880,003    
Emerging Growth Fund                                                     921,864     1,550,235    
</TABLE>
    
                                                                      
   
* fiscal period from June 30, 1998 through October 31, 1998
    

    Until March 20, 1998, Sierra Fund Administration Corporation ("Sierra
Administration") served as the administrator, and First Data Investor Services
Group, Inc. ("First Data") served as the sub-administrator to each of the WM
Trust II Funds and each of the Portfolios. Shareholder Services had provided
transfer agency and other shareholder services to each of the WM Trust I Funds
prior to that date, and has provided transfer agency and other shareholder
services to each of the Funds and Portfolios since March 20, 1998.


                                      -17-
<PAGE>   178
    For the three most recent fiscal years the Trusts paid Shareholder Services
and its affiliates the following administration and/or Transfer Agent fees:


   
<TABLE>
<CAPTION>
                                                     Oct. 1998        June 1998               1997             1996        96    
                                                   ------------  -------------------  --------------------- ----------- ---------
                                                   Fees   Fees      Fees      Fees       Fees       Fees       Fees       Fees   
                                                   Paid  Waived     Paid     Waived      Paid      Waived      Paid      Waived  
<S>                                                <C>   <C>     <C>         <C>       <C>         <C>        <C>        <C>   
Money Market Fund*                                                  n/a       n/a      476,775    141,274    411,274    137,904  
Tax-Exempt Money Market Fund*                                       n/a       n/a      26,688      1,293     26,736      1,628   
California Money Fund**                                           73,762       0       140,313       0       155,097       0     
Short Term High Quality Bond Fund**                               33,910       0       107,344       0       809,686    11,630   
Target Maturity 2002 Fund+**                                       5,515       0       10,859        0       11,080      3,805   
U.S. Government Securities Fund*                                    n/a       n/a      105,444       0       146,145       0     
Income Fund*                                                        n/a       n/a      93,522        0       114,258       0     
Tax-Exempt Bond Fund*                                               n/a       n/a      84,547        0       102,716       0     
California Municipal Fund**                                       860,498      0      1,312,972      0      1,421,633      0     
California Insured Intermediate Municipal Fund**                  161,117      0       253,706       0       250,472    14,288   
Florida Insured Municipal Fund**                                  65,423       0       110,484       0       128,399    20,472   
Bond & Stock Fund***                                                n/a       n/a      235,936       0       222,913       0     
Growth & Income Fund***                                             n/a       n/a      245,357       0       193,784       0     
Growth Fund**                                                     723,887      0       927,458       0       769,573       0     
International Growth Fund**                                       370,136      0       616,002       0       422,563       0     
Northwest Fund                                                      n/a       n/a      347,561       0       320,799       0     
Emerging Growth Fund**                                            620,085      0      1,050,164      0       994,372       0     
Strategic Growth Portfolio++**                                    303,985      0       122,140    83,235       n/a        n/a    
Conservative Growth Portfolio++**                                1,463,013     0       866,812    259,689      n/a        n/a    
Balanced Portfolio++**                                           1,079,118     0       628,588    179,370      n/a        n/a    
Flexible Income Portfolio++**                                     88,955       0       66,287     58,740       n/a        n/a    
Income Portfolio++**                                              76,470       0       61,796     50,033       n/a        n/a    
</TABLE>                                                          
    
                                                                      
+        The Target Maturity 2002 Fund commenced operations on March 20, 1995.

++       The Portfolios commenced operations on July 25, 1996.

   
*        Fiscal year end changed from 12/31 to 10/31.
    

   
**       Fiscal year end changed from 6/30 to 10/31.
    

   
    

                                      -18-
<PAGE>   179
For the three most recent fiscal years, Shareholder Services and its affiliates
paid the following amounts to First Data for sub-administrative services to the
Funds and Portfolios.


   
<TABLE>
<CAPTION>
                                                  Oct.        June
                                                  1998        1998       1997
                                              -----------   --------   --------
<S>                                           <C>           <C>        <C>
Money Market Fund*                                             n/a       n/a 
Tax-Exempt Money Market Fund*                                  n/a       n/a 
California Money Fund**                                     $ 37,008   $ 37,649 
Short Term High Quality Bond Fund**                         $ 31,105   $ 24,633 
Target Maturity 2002 Fund**                                 $  7,700   $  2,499 
US Government Securities Fund*                                 n/a       n/a 
Income Fund*                                                   n/a       n/a 
High Yield Fund                                                          n/a 
California Municipal Fund**                                 $243,920   $302,048 
Tax-Exempt Bond Fund*                                          n/a       n/a 
California Insured Intermediate
  Municipal Fund**                                          $249,738   $ 58,360 
Florida Insured Municipal Fund**                            $ 23,945   $ 25,408 
Bond & Stock Fund                                              n/a       n/a 
Growth & Income Fund                                           n/a       n/a 
Northwest Fund                                                 n/a       n/a 
Growth Fund**                                               $260,697   $213,556 
International Growth Fund**                                 $249,221   $141,808 
Emerging Growth Fund**                                      $193,279   $241,257 
Strategic Growth Portfolio++**                              $ 32,694   $  1,128 
Conservative Growth Portfolio++**                           $ 52,443   $  1,164 
Balanced Portfolio++**                                      $ 45,182   $  1,257 
Flexible Income Portfolio++**                               $ 25,987   $  1,533 
Income Portfolio++**                                        $ 25,783   $  1,249 
</TABLE>
    


++   The Portfolios commenced operations on July 25, 1996.
   
 *   Fiscal year end changed from 12/31 to 10/31.
    
   
**   Fiscal year end changed from 6/30 to 10/31.
    

COUNSEL

   
         Ropes & Gray, located at One International Place, Boston, Massachusetts
02110, serves as counsel to the Trusts.
    

   
INDEPENDENT AUDITORS AND FINANCIAL STATEMENTS
    

   
         Deloitte & Touche LLP, 50 Fremont Street, San Francisco, CA 94105,
serves as independent auditors to each of the Funds and Portfolios.
PricewaterhouseCoopers LLP, 160 Federal Street, Boston, Massachusetts 02110,
served as independent auditors to WM
    

                                      -19-
<PAGE>   180
   
Trust II and WM Strategic Asset Management Portfolios for their fiscal year
ending June 30, 1998 and for prior fiscal years. Prior to the current fiscal
year of the WM Trust I Funds, LeMaster & Daniels PLLC, 601 West Riverside, Suite
700, Spokane, Washington 99201, served as independent auditors to WM Trust I.
The financial statements, financial highlights and Report of Independent
Accountants of Deloitte & Touche LLP for each of the Funds and Portfolios
contained in the Funds' and Portfolios' Annual Report for the fiscal year ended
October 31, 1998 are hereby incorporated by reference. The financial statements,
financial highlights and Report of Independent Accountants of
PricewaterhouseCoopers LLP for each of the WM Trust II Funds and each of the
Portfolios contained in such Funds' and Portfolios' Annual Report to
Shareholders for the year ended June 30, 1998 are incorporated herein by
reference. The financial statements, financial highlights and Report of
Independent Accountants of LeMaster & Daniels PLLC for each of the WM Trust I
Funds contained in such Funds' Annual Reports to Shareholders for the fiscal
years ended October 31, 1997 or December 31, 1997, as the case may be, are
hereby incorporated by reference. The financial statements incorporated by
reference into this SAI and the financial highlights in the Prospectus have been
audited by Deloitte & Touche LLP, PricewaterhouseCoopers LLP or LeMaster &
Daniels PLLC, as the case may be, and have been so included in reliance on such
independent accountants' reports, given on the authority of such firms in
accounting and auditing.
    

ORGANIZATION OF THE TRUST

         WM Trust I is an open-end management investment company, organized as a
Massachusetts business trust pursuant to a Master Trust Agreement dated
September 19, 1997, as amended from time to time (the "WM Trust I Agreement").
WM Trust II is organized as a Massachusetts business trust pursuant to a Master
Trust Agreement dated February 22, 1989, as amended from time to time (the "WM
Trust II Agreement"). WM Strategic Asset Management Portfolios is an open-end
management investment company, organized as a Massachusetts business trust
pursuant to a Master Trust Agreement dated March 26, 1996, as amended from time
to time (the "WM Strategic Asset Management Portfolios Agreement" and
collectively, the "Trust Agreements"). In the interest of economy and
convenience, certificates representing shares in the Trusts are not physically
issued. Boston Safe Deposit and Trust Co. ("Boston Safe"), the Trusts'
Custodian, and Shareholder Services, the Trusts' Transfer Agent, maintain a
record of each shareholder's ownership of Trust shares. Shares do not have
cumulative voting rights, which means that holders of more than 50% of the
shares voting for the election of Trustees can elect all Trustees. Shares are
transferable but have no preemptive, conversion or subscription rights.
Shareholders generally vote by Fund, Portfolio or Class, except with respect to
the election of Trustees and the selection of independent accountants, for which
shareholders of each Trust as a whole vote together.

         Under normal circumstances, there will be no meetings of shareholders
for the purpose of electing Trustees unless and until such time as less than a
majority of the Trustees holding office have been elected by shareholders, at
which time the Trustees then in office promptly will call a shareholders'
meeting for the election of Trustees. Under the 1940 Act, shareholders


                                      -20-
<PAGE>   181
of record of no less than two-thirds of the outstanding shares of the Trust may
remove a Trustee through a declaration in writing or by vote cast in person or
by proxy at a meeting called for that purpose. Under the Trust Agreements, the
Trustees are required to call a meeting of shareholders for the purpose of
voting upon the question of removal of any such Trustee when requested in
writing to do so by the shareholders of record of not less than 10% of any of a
Trust's outstanding shares.

         Massachusetts law provides that shareholders, under certain
circumstances, could be held personally liable for the obligations of a Trust.
However, each Trust Agreement disclaims shareholder liability for acts or
obligations of the Trusts and require that notice of such disclaimer be given in
each agreement, obligation or instrument entered into or executed by the Trust
or a Trustee. Each Trust Agreement provides for indemnification from the Trust's
property for all losses and expenses of any shareholder held personally liable
for the obligations of the Trust. Thus, the risk of a shareholder incurring
financial loss on account of shareholder liability is limited to circumstances
in which the Trust would be unable to meet its obligations, a possibility that
the Trusts' management believes is remote. The Trustees intend to conduct the
operations of each Trust in such a way so as to avoid, to the extent possible,
ultimate liability of the shareholders for the liabilities of the Trust.

INVESTMENT OBJECTIVES AND POLICIES

         The Prospectus discusses the investment objective or objectives of each
of the Funds and Portfolios and the policies to be employed to achieve such
objectives. This section contains supplemental information concerning the types
of securities and other instruments in which the Funds and Portfolios may
invest, the investment policies and portfolio strategies that the Funds and
Portfolios may utilize and certain risks attendant to such investments, policies
and strategies.

         RATINGS AS INVESTMENT CRITERIA. In general, the ratings of nationally
recognized statistical rating organization ("NRSROs"), such as Moody's Investors
Service, Inc. ("Moody's"), Standard & Poor's ("S&P"), Duff and Phelps, and
Fitch, represent the opinions of these agencies as to the quality of securities
which they rate. It should be emphasized, however, that such ratings are
relative and subjective and are not absolute standards of quality. These ratings
will be used by the Funds as initial criteria for the selection of portfolio
securities, but the Funds will also rely upon the independent advice of the
Advisor or their respective sub-advisors. The Appendix to this SAI contains
further information concerning the ratings of these services and their
significance.

         To the extent that the rating given by Moody's or S&P for securities
may change as a result of changes in such organizations or their rating systems,
each Fund will attempt to use comparable ratings as standards for its
investments in accordance with the investment policies contained in the
Prospectus and in this SAI.


                                      -21-
<PAGE>   182
         U.S. GOVERNMENT SECURITIES. U.S. Government Securities include debt
obligations of varying maturities issued or guaranteed by the U.S. Government,
its agencies or instrumentalities. U.S. Government Securities include, but are
not necessarily limited to, direct obligations of the U.S. Treasury, and
securities issued or guaranteed by the Federal Housing Administration, Farmers
Home Administration, Export-Import Bank of the United States, Small Business
Administration, Government National Mortgage Association ("GNMA"), General
Services Administration, Central Bank for Cooperatives, Federal Farm Credit
Banks, Federal Home Loan Banks, Federal Home Loan Mortgage Corporation
("FHLMC"), Federal Intermediate Credit Banks, Resolution Trust Corporation,
Federal Land Banks, Federal National Mortgage Association ("FNMA"), Maritime
Administration, Tennessee Valley Authority, District of Columbia Armory Board
and Student Loan Marketing Association. Direct obligations of the U.S. Treasury
include a variety of securities that differ in their interest rates, maturities
and dates of issuance. Because the U.S. Government is not obligated by law to
provide support to an instrumentality it sponsors, a Fund will invest in
obligations issued by such an instrumentality only if the Advisor or the Fund's
sub-advisor determines that the credit risk with respect to the instrumentality
does not make its securities unsuitable for investment by the Fund.

         ILLIQUID INVESTMENTS. These securities generally cannot be sold or
disposed of in the ordinary course of business at approximately the value at
which the Fund has valued the investments within seven days. This may have an
adverse effect upon the Fund's ability to dispose of the particular securities
at fair market value and may limit the Fund's ability to obtain accurate market
quotations for purposes of valuing the securities and calculating the net asset
value of shares of the Fund. The Funds may also purchase securities that are not
registered under the Securities Act of 1933, as amended (the "Securities Act"),
but that can be sold to qualified institutional buyers in accordance with Rule
144A under that Act ("Rule 144A securities"). Rule 144A securities generally
must be sold to other qualified institutional buyers. If a particular investment
in Rule 144A securities is not determined to be liquid, that investment will be
treated as an illiquid security.

         COMBINED TRANSACTIONS. To the extent permitted by each Fund's
investment polices and restrictions, the Funds may enter into multiple
transactions, including multiple options transactions, multiple futures
transactions, multiple foreign currency transactions (including forward foreign
currency exchange contracts) and any combination of futures, options and foreign
currency transactions (each separately, a "component" transaction), instead of a
single transaction, as part of a single hedging strategy when, in the opinion of
the Advisor or the sub-advisor, it is in the best interest of the Fund to do so.
A combined transaction, while part of a single hedging strategy, may contain
elements of risk that are present in each of its component transactions.

         BANK OBLIGATIONS. Domestic commercial banks organized under federal law
are supervised and examined by the Comptroller of the Currency and are required
to be members of the Federal Reserve System and to be insured by the Federal
Deposit Insurance Corporation


                                      -22-
<PAGE>   183
(the "FDIC"). Domestic banks organized under state law are supervised and
examined by state banking authorities but are members of the Federal Reserve
System only if they elect to join. Most state banks are insured by the FDIC
(although such insurance may not be of material benefit to a Fund, depending
upon the principal amount of certificates of deposit ("CDs") of each state bank
held by a Fund) and are subject to federal examination and to a substantial body
of federal law and regulation. As a result of federal and state laws and
regulations, domestic branches of domestic banks are, among other things,
generally required to maintain specific levels of reserves, and are subject to
other supervision and regulation designed to promote financial soundness.

         Obligations of foreign branches of U.S. banks and of foreign branches
of foreign banks, such as CDs and time deposits ("TDs"), may be general
obligations of the parent bank in addition to the issuing branch, or may be
limited by the terms of a specific obligation and governmental regulation.
Obligations of foreign branches of U.S. banks and foreign banks are subject to
the risks associated with investing in foreign securities generally. Foreign
branches of U.S. banks and foreign branches of foreign banks are not necessarily
subject to the same or similar regulatory requirements that apply to U.S. banks,
such as mandatory reserve requirements, loan limitations, and accounting,
auditing and financial recordkeeping requirements. In addition, less information
may be publicly available about a foreign branch of a U.S. bank or about a
foreign bank than about a U.S. bank.

         Obligations of U.S. branches of foreign banks may be general
obligations of the parent bank in addition to the issuing branch, or may be
limited by the terms of a specific obligation and by federal and state
regulation as well as governmental action in the country in which the foreign
bank has its head office. A U.S. branch of a foreign bank may or may not be
subject to reserve requirements imposed by the Federal Reserve System or by the
state in which the branch is located if the branch is licensed in that state.
The deposits of branches licensed by certain states may not necessarily be
insured by the FDIC. In addition, there may be less publicly available
information about a U.S. branch of a foreign bank than about a U.S. bank.

         In view of the foregoing factors associated with the purchase of CDs
and TDs issued by foreign banks and foreign branches of U.S. banks, the Advisor
or the Funds' respective sub-advisors will carefully evaluate such investments
on a case-by-case basis.

         A Fund may purchase a CD, TD or bankers' acceptances issued by a bank,
savings and loan association or other banking institution with less than $1
billion in assets (a "Small Issuer Bank Obligation") only so long as the issuer
is a member of the FDIC or supervised by the Office of Thrift Supervision (the
"OTS") and so long as the principal amount of the Small Issuer Bank Obligation
is fully insured by the FDIC and is no more than $100,000. Each of the Funds
will at any one time hold only one Small Issuer Bank Obligation from any one
issuer.

         Savings and loan associations whose CDs, TDs and bankers' acceptances
may be purchased by the Funds are supervised by the OTS and insured by the
Savings Association


                                      -23-
<PAGE>   184
Insurance Fund, which is administered by the FDIC and is backed by the full
faith and credit of the United States Government. As a result, such savings and
loan associations are subject to regulation and examination.

         MORTGAGE-BACKED SECURITIES. The mortgage-backed securities in which the
Funds may invest include these classified as governmental or government-related.
Governmental mortgage-backed securities are backed by the full faith and credit
of the United States. GNMA, the principal U.S. guarantor of such securities, is
a wholly-owned U.S. Government corporation within the Department of Housing and
Urban Development. Government-related mortgage-backed securities which are not
backed by the full faith and credit of the United States include those issued by
FNMA and FHLMC. FNMA is a government-sponsored corporation owned entirely by
private stockholders, which is subject to general regulation by the Secretary of
Housing and Urban Development. Pass-through securities issued by FNMA are
guaranteed as to timely payment of principal and interest by FNMA. FHLMC is a
corporate instrumentality of the United States, the stock of which is owned by
the Federal Home Loan Banks. Participation certificates representing interests
in mortgages from FHLMC's national portfolio are guaranteed as to the timely
payment of interest and ultimate collection of principal by FHLMC.

         Entities may create mortgage loan pools offering pass-through
investments in addition to those described above. The mortgages underlying these
securities may be alternative mortgage instruments, that is, mortgage
instruments in which principal or interest payments may vary or terms to
maturity may be shorter than previously customary. As new types of
mortgage-backed securities are developed and offered to investors, the Funds
will, consistent with their respective investment objectives and policies,
consider making investments in such new types of securities.

         The average maturity of pass-through pools of mortgage-backed
securities varies with the maturities of the underlying mortgage instruments. In
addition, a pool's stated maturity may be shortened by unscheduled payments on
the underlying mortgages. Factors affecting mortgage prepayments include the
level of interest rates, general economic and social conditions, the location of
the mortgaged property and the age of the mortgage. Because prepayment rates of
individual mortgage pools vary widely, it is not possible to accurately predict
the average life of a particular pool. Common industry practice, for example, is
to assume that prepayments will result in a 7- to 9-year average life for pools
of fixed-rate 30-year mortgages. Pools of mortgages with other maturities or
different characteristics will have varying average life assumptions.

         REPURCHASE AGREEMENTS. The California Money, Short Term High Quality
Bond, High Yield, Target Maturity 2002, California Insured Intermediate
Municipal, Florida Insured Municipal, Growth, International Growth and Emerging
Growth Funds may invest in repurchase agreements without limitation. The
California Municipal Fund may invest no more than 20%, in the aggregate, of its
assets in repurchase agreements and certain other securities or instruments, but
this 20% limit does not apply to investments for temporary defensive purposes.
The Money Market, Tax-Exempt Money Market, U.S. Government Securities, Income,
Tax-Exempt Bond, Bond & Stock, Growth & Income and Northwest Funds may enter
into repurchase agreements


                                      -24-
<PAGE>   185
with brokers, dealers and banks to temporarily invest cash reserves, provided
that repurchase agreements maturing in greater than 7 days cannot exceed 10% of
each Fund's total assets.

         WHEN ISSUED SECURITIES AND DELAYED DELIVERY TRANSACTIONS. A segregated
account in the name of the Fund consisting of cash or other liquid assets equal
to the amount of when-issued or delayed-delivery commitments will be established
at Boston Safe, the Trusts' Custodian. For the purpose of determining the
adequacy of the securities in the accounts, the deposited securities will be
valued at market or fair value. If the market or fair value of the securities
declines, additional cash or securities will be placed in the account daily so
that the value of the account will equal the amount of such commitments by the
Fund. On the settlement date, the Fund will meet its obligations from
then-available cash flow, the sale of securities held in the segregated account,
the sale of other securities or, although it would not normally expect to do so,
from the sale of securities purchased on a when-issued or delayed-delivery basis
themselves (which may have a greater or lesser value than the Fund's payment
obligations).

         STRATEGIC TRANSACTIONS. Subject to the investment limitations and
restrictions for each of the Funds stated elsewhere in this SAI and in the
Prospectus, each of the Funds and Portfolios, except for the Money Funds, may
utilize various investment strategies as described below to hedge various market
risks, to manage the effective maturity or duration of fixed-income securities
or for other bona fide hedging purposes. No Fund or Portfolio currently intends
to enter into Strategic Transactions, excluding Strategic Transactions that are
"covered" or entered into for bona fide hedging purposes, that are in the
aggregate principal amount in excess of 15% of the Fund's net assets.

         The Funds and Portfolios may enter into multiple transactions,
including multiple options transactions, multiple futures transactions, multiple
foreign currency transactions (including forward foreign currency exchange
contracts) and any combination of futures, options and foreign currency
transactions (each separately, a "component" transaction), instead of a single
transaction, as part of a single strategy when, in the opinion of the Advisor or
the sub-advisor, it is in the best interest of the Fund or Portfolio to do so. A
combined transaction may contain elements of risk that are present in each of
its component transactions.

         The use of Strategic Transactions for asset management purposes
involves special considerations and risks. Additional risks pertaining to
particular strategies that make up Strategic Transactions are described below.
Successful use of most Strategic Transactions depends upon the Advisor or the
sub-advisor's ability to predict movements of the overall securities and
interest rate markets, which requires different skills than predicting changes
in the prices of individual securities. There can be no assurance that any
particular strategy adopted will succeed. There may be imperfect correlation, or
even no correlation, between price movements of Strategic Transactions and price
movements of the related portfolio or currency positions. Such a lack of
correlation might occur due to factors unrelated to the value of the related
portfolio or currency positions, such as speculative or other pressures on the
markets in which Strategic Transactions are traded. In addition, a Fund or
Portfolio might be required to maintain assets as "cover,"


                                      -25-
<PAGE>   186
maintain segregated accounts or make margin payments when it takes positions in
Strategic Transactions involving obligations to third parties (i.e., Strategic
Transactions other than purchased options). These requirements might impair the
Fund's ability to sell a portfolio security or currency position or make an
investment at a time when it would otherwise be favorable to do so, or require
that the Fund sell a portfolio security or currency position at a
disadvantageous time.

         - SWAPS, CAPS, FLOORS AND COLLARS. Among the Strategic Transactions
into which a Fund engaging in Strategic Transactions may enter, consistent with
the Fund's investment policies and restrictions, are interest rate, currency and
index swaps and the purchase or sale of related caps, floors and collars. A Fund
would enter into these transactions primarily to preserve a return or spread on
a particular investment or portion of its portfolio, to protect against currency
fluctuations, as a duration management technique or to protect against any
increase in the price of securities the Fund anticipates purchasing at a later
date. A Fund will use these transactions as hedges and not speculative
investments and will not sell interest rate caps or floors where it does not own
securities or other instruments providing the income stream the Fund may be
obligated to pay. Interest rate swaps involve the exchange by a Fund with
another party of their respective commitments to pay or receive interest, e.g.,
an exchange of floating rate payments for fixed rate payments with respect to a
notional amount of principal. A currency swap is an agreement to exchange cash
flows on a notional amount of two or more currencies based on the relative value
differential among them and an index swap is an agreement to swap cash flows on
a notional amount based on changes in the values of the reference indices. The
purchase of a cap entitles the purchaser to receive payments on a notional
principal amount from the party selling such cap to the extent that a specified
index exceeds a predetermined interest rate or amount. The purchase of a floor
entitles the purchaser to receive payments on a notional principal amount from
the party selling such floor to the extent that a specified index falls below a
predetermined interest rate or amount. A collar is a combination of a cap and a
floor that preserves a certain return within a predetermined range of interest
rates or value.

         A Fund will usually enter into swaps on a net basis, i.e., the two
payment streams are netted out in a cash settlement on the payment date or dates
specified in the instrument, with the Fund receiving or paying, as the case may
be, only the net amount of the two payments. Inasmuch as these swaps, caps,
floors and collars are entered into for good faith hedging purposes, the Advisor
and the Trusts believe that such obligations do not constitute senior securities
under the 1940 Act and, accordingly, will not treat them as being subject to the
Fund's borrowing restrictions. If there is a default by the counterparty, a Fund
may have contractual remedies pursuant to the agreements related to the
transaction. Caps, floors and collars are relatively recent innovations for
which standardized documentation has not yet been fully developed and,
accordingly, they may be less liquid. - FUTURES ACTIVITIES. Each of the Funds
permitted to engage in Strategic Transactions (other than the Target Maturity
2002 Fund or the WM Trust I Funds and each of the Portfolios may enter into
futures contracts and options on futures contracts that are traded on a U.S.
exchange or board of trade. These investments may be made by the Fund involved
for the purpose of hedging against changes in the value of its portfolio
securities due to


                                      -26-
<PAGE>   187
anticipated changes in interest rates and market conditions, and for otherwise
permitted Strategic Transactions. In the case of the California Municipal, the
California Insured Intermediate Municipal and the Florida Insured Municipal
Funds, such investments will be made only in unusual circumstances, such as when
that Funds' sub-advisor anticipates an extreme change in interest rates or
market conditions. The ability of a Fund to trade in futures contracts and
options on futures contracts may be materially limited by the requirement of the
Internal Revenue Code of 1986, as amended (the "Code"), applicable to a
regulated investment company. See "Taxes" below.

         - FUTURES CONTRACTS. An interest rate futures contract provides for the
future sale by one party and the purchase by the other party of a certain amount
of a specific financial instrument (debt security) at a specified price, date,
time and place. A bond index futures contract is an agreement pursuant to which
two parties agree to take or make delivery of an amount of cash equal to the
difference between the value of the index at the close of the last trading day
of the contract and the price at which the index contract was originally
written. No physical delivery of the underlying securities in the index is made.

         The purpose of entering into a futures contract by a Fund or Portfolio
is to protect the Fund or Portfolio from fluctuations in the value of its
securities caused by anticipated changes in interest rates or market conditions
without necessarily buying or selling the securities. For example, if the
California Municipal Fund, the California Insured Intermediate Municipal Fund or
the Florida Insured Municipal Fund owns long-term bonds and tax-exempt rates are
expected to increase, these Funds might enter into futures contracts to sell a
municipal bond index. Such a transaction would have much the same effect as a
Fund's selling some of the long-term bonds in its portfolio. If tax-exempt rates
increase as anticipated, the value of certain long-term municipal obligations in
the portfolio would decline, but the value of the Fund's futures contracts would
increase at approximately the same rate, thereby keeping the net asset value of
the Fund from declining as much as it otherwise would have. Because the value of
portfolio securities will far exceed the value of the futures contracts entered
into by a Fund, an increase in the value of the futures contract would only
mitigate -- but not totally offset -- the decline in the value of the portfolio.

         No consideration is paid or received by a Fund upon entering into a
futures contract. Initially, a Fund or Portfolio would be required to deposit
with the broker an amount of cash or cash equivalents equal to approximately 1%
to 10% of the contract amount (this amount is subject to change by the board of
trade on which the contract is traded and members of such board of trade may
charge a higher amount). This amount is known as "initial margin" and is in its
nature the equivalent of a performance bond or good faith deposit on the
contract, which is returned to a Fund or Portfolio upon termination of the
futures contract, assuming all contractual obligations have been satisfied.
Subsequent payments, known as "variation margin," to and from the broker, will
be made daily as the price of the index or securities underlying the futures
contract fluctuates, making the long and short positions in the futures contract
more or less valuable, a process known as "marking-to-market." At any time prior
to the expiration of a futures contract, a Fund or Portfolio may elect to close
the position by


                                      -27-
<PAGE>   188
taking an opposite position, which will operate to terminate the Fund's or
Portfolio's existing position in the contract.

         There are several risks in connection with the use of futures contracts
as a hedging device. Successful use of futures contracts by a Fund is subject to
the ability of the Advisor or the sub-advisor to correctly predict movements in
the direction of interest rates or changes in market conditions. These
predictions involve skills and techniques that may be different from those
involved in the management of the portfolio being hedged. In addition, there can
be no assurance that there will be a correlation between movements in the price
of the underlying index or securities and movements in the price of the
securities which are the subject of the hedge. A decision of whether, when and
how to hedge involves the exercise of skill and judgment, and even a
well-conceived hedge may be unsuccessful to some degree because of market
behavior or unexpected trends in interest rates.

         Although the Funds and the Portfolios intend to enter into futures
contracts only if there is an active market for such contracts, there is no
assurance that an active market will exist for the contracts at any particular
time. Most U.S. futures exchanges and boards of trade limit the amount of
fluctuation permitted in futures contract prices during a single trading day.
Once the daily limit has been reached in a particular contract, no trades may be
made that day at a price beyond that limit. It is possible that futures contract
prices would move to the daily limit for several consecutive trading days with
little or no trading, thereby preventing prompt liquidation of futures positions
and subjecting some futures traders to substantial losses. In such event, and in
the event of adverse price movements, a Fund or Portfolio would be required to
make daily cash payments of variation margin. In such circumstances, an increase
in the value of the portion of the portfolio being hedged, if any, may partially
or completely offset losses on the futures contract. However, as described
above, there is no guarantee that the price of the securities being hedged will,
in fact, correlate with the price movements in a futures contract and thus
provide an offset to losses on the futures contract.

         To ensure that transactions constitute bona fide hedges in instances
involving the purchase or sale of a futures contract, the Funds or Portfolios
will be required to either (i) segregate sufficient cash or liquid assets to
cover the outstanding position or (ii) cover the futures contract by either
owning the instruments underlying the futures contract or by holding a portfolio
of securities with characteristics substantially similar to the underlying index
or stock index comprising the futures contract or by holding a separate option
permitting it to purchase or sell the same futures contract. Because of the
imperfect correlation between the movements in the price of underlying indexes
or stock indexes of various futures contracts and the movement of the price of
securities in the Funds' or Portfolio's assets, the Funds and Portfolios will
periodically make adjustments to its index futures contracts positions to
appropriately reflect the relationship between the underlying portfolio and the
indexes. The Funds and Portfolios will not maintain short positions in index or
stock index futures contracts, options written on index or stock index futures
contracts and options written on indexes or stock indexes, if in the aggregate,
the value of these positions exceeds the current market value of its securities
portfolio plus or minus the unrealized


                                      -28-
<PAGE>   189
gain or loss on those positions, adjusted for the historical volatility
relationship between the portfolio and the index contracts.

         - OPTIONS ON FUTURES CONTRACTS. An option on a futures contract, as
contrasted with the direct investment in such a contract, gives the purchaser
the right, in return for the premium paid, to assume a position in the futures
contract at a specified exercise price at any time prior to the expiration date
of the option. Upon exercise of an option, the delivery of the futures position
by the writer of the option to the holder of the option will be accompanied by
delivery of the accumulated balance in the writer's futures margin account,
which represents the amount by which the market price of the futures contract
exceeds, in the case of a call, or is less than, in the case of a put, the
exercise price of the option on the futures contract. The value of the option
can change daily and that change would be reflected in the net asset value of
the Fund or Portfolio holding the option.

         When engaging in Strategic Transactions, the Funds and the Portfolios
may purchase and write put and call options on futures contracts that are traded
on a U.S. exchange or board of trade as a hedge against changes in the value of
its portfolio securities, and may enter into closing transactions with respect
to such options to terminate existing positions. There is no guarantee that such
closing transactions can be effected.

         There are several risks relating to options on futures contracts. The
ability to establish and close out positions on such options will be subject to
the existence of a liquid market. In addition, the purchase of put or call
options will be based upon predictions as to anticipated interest rate and
market trends by the Advisor or the sub-advisors, which could prove to be
inaccurate. Even if the expectations of the Advisor or the sub-advisors are
correct, there may be an imperfect correlation between the change in the value
of the options and the portfolio securities hedged.

         - OPTIONS ON SECURITIES. The Short Term High Quality Bond, Bond &
Stock, Growth & Income, Growth, International Growth, Northwest and Emerging
Growth Funds may buy and sell covered put (except for the Bond & Stock, Growth &
Income and Northwest Funds) and call options on securities.

         Options written by a Fund will normally have expiration dates between
one and nine months from the date written. The exercise price of the options may
be below, equal to or above the market values of the underlying securities at
the times the options are written. In the case of call options, these exercise
prices are referred to as "in-the-money," "at-the-money" and "out-of-the-money,"
respectively. A Fund may write (1) in-the-money call options when the Advisor or
its sub-advisor expects that the price of the underlying security will remain
flat or decline moderately during the option period, (2) at-the-money call
options when the Advisor or its sub-advisor expects that the price of the
underlying security will remain flat or advance moderately during the option
period and (3) out-of-the-money call options when the Advisor or its sub-advisor
expects that the premiums received from writing the call option plus the
appreciation in the market price of the underlying security up to the exercise
price will be greater than the appreciation in the


                                      -29-
<PAGE>   190
price of the underlying security alone. In any of the preceding situations, if
the market price of the underlying security declines and the security is sold at
this lower price, the amount of any realized loss will be offset wholly or in
part by the premium received. Out-of-the-money, at-the-money and in-the-money
put options (the reverse of call options as to the relation of exercise price to
market price) may be utilized in the same market environments as such call
options described above.

         So long as the obligation of the Fund as the writer of an option
continues, the Fund may be assigned an exercise notice by the broker-dealer
through which the option was sold, requiring the Fund to deliver, in the case of
a call, or take delivery of, in the case of a put, the underlying security
against payment of the exercise price. This obligation terminates when the
option expires or the Fund effects a closing purchase transaction. The Fund can
no longer effect a closing purchase transaction with respect to an option once
it has been assigned an exercise notice. To secure its obligation to deliver the
underlying security when it writes a call option, or to pay for the underlying
security when it writes a put option, the Fund will be required to deposit in
escrow the underlying security or other assets in accordance with the rules of
the Options Clearing Corporation (the "OCC") and of the securities exchange on
which the option is written.

         An option may be closed out only when there exists a secondary market
for an option of the same series on a recognized securities exchange or in the
over-the-counter market. In light of this fact and current trading conditions,
the Fund expects to purchase or write call or put options issued by the OCC,
except that options on U.S. Government Securities may be purchased or written in
the over-the-counter market. Over-the-counter options can be closed out only by
agreement with the primary dealer in the transaction. Any over-the-counter
option written by a Fund will be with a qualified dealer pursuant to an
Agreement under which the Fund may repurchase the option at a formula price at
which the Fund would have the absolute right to repurchase an over-the-counter
option it has sold. Such options will generally be considered illiquid in an
amount equal to the formula price, less the amount by which the option is
"in-the-money." In the event of the insolvency of the primary dealer, the Fund
may not be able to liquidate its position in over-the-counter options, and the
inability of the Fund to enter into closing purchase transactions on options
written by the Fund may result in a material loss to the Fund.

         A Fund may realize a profit or loss upon entering into closing
transactions. In cases where the Fund has written an option, it will realize a
profit if the cost of the closing purchase transaction is less than the premium
received upon writing the original option, and will incur a loss if the cost of
the closing purchase transaction exceeds the premium received upon writing the
original option. Similarly, when the Fund has purchased an option and engages in
a closing sale transaction, the Fund will realize a profit or loss to the extent
that the amount received in the closing sale transaction is more or less than
the premium the Fund initially paid for the original option plus the related
transaction costs.

         To facilitate closing transactions, a Fund will generally purchase or
write only those options for which the Advisor or its sub-advisor believes there
is an active secondary market


                                      -30-
<PAGE>   191
although there is no assurance that sufficient trading interest to create a
liquid secondary market on a securities exchange will exist for any particular
option or at any particular time, and for some options no such secondary market
may exist. A liquid secondary market in an option may cease to exist for a
variety of reasons. In the past, for example, higher than anticipated trading
activity or order flow, or other unforeseen events, have at times rendered
certain of the facilities of the OCC and the securities exchanges inadequate and
resulted in the institution of special procedures, such as trading rotations,
restrictions on certain types of orders or trading halts or suspensions in one
or more options. There can be no assurance that similar events, or events that
may otherwise interfere with the timely execution of customers' orders, will not
recur. In such events, it might not be possible to effect closing transactions
in particular options. If as a covered call option writer the Fund is unable to
effect a closing purchase transaction in a secondary market, it will not be able
to sell the underlying security until the option expires or it delivers the
underlying security upon exercise.

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

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

         Additional risks exist with respect to mortgage-backed U.S. Government
Securities for which the Fund may write covered call options. If a Fund writes
covered call options on a mortgage-backed security, the security that it holds
as cover may, because of scheduled amortization of unscheduled prepayments,
cease to be sufficient cover. In such an instance, the Fund will compensate by
purchasing an appropriate additional amount of mortgage-backed securities.

         - OPTIONS ON SECURITIES INDEXES. The Short Term High Quality Bond,
California Insured Intermediate Municipal, Growth, International Growth and
Emerging Growth Funds may


                                      -31-
<PAGE>   192
also purchase and sell call and put options on securities indexes. Such options
give the holder the right to receive a cash settlement during the term of the
option based upon the difference between the exercise price and the value of the
index.

         Options on securities indexes entail risks in addition to the risks of
options on securities. Because exchange trading of options on securities indexes
is relatively new, the absence of a liquid secondary market to close out an
option position is more likely to occur, although the Fund generally will
purchase or write such an option only if the Advisor or its sub-advisor believes
the option can be closed out.

         Use of options on securities indexes also entails the risk that trading
in such options may be interrupted if trading in certain securities included in
the index is interrupted. The Fund will not purchase such options unless the
Advisor or its sub-advisor believes the market is sufficiently developed for the
risk of trading in such options to be no greater than the risk of trading in
options on securities.

         Price movements in the Fund's portfolio may not correlate precisely
with movements in the level of an index and, therefore, the use of options on
securities indexes cannot serve as a complete hedge. Because options on
securities indexes require settlement in cash, the Fund may be forced to
liquidate portfolio securities to meet settlement obligations.

         - FOREIGN CURRENCY EXCHANGE TRANSACTIONS. The Short Term High Quality
Bond, Income, Growth, International Growth and Emerging Growth Funds may engage
in currency exchange transactions to protect against uncertainty in the level of
future exchange rates. The Funds' dealings in forward currency exchange
contracts will be limited to hedging involving either specific transactions or
portfolio positions. Transaction hedging is the purchase or sale of forward
foreign currency with respect to specific receivables or payables of the Fund
generally arising in connection with the purchase or sale of its portfolio
securities. Position hedging is the sale of forward foreign currency with
respect to portfolio security positions denominated or quoted in such foreign
currency. A Fund may not position hedge with respect to a particular currency to
an extent greater than the aggregate market value (at the time of making such
sale) of the securities held in its portfolio denominated or quoted in or
currently convertible into that particular currency.

         If a Fund enters into a position hedging transaction, the Trusts'
Custodian will, except in circumstances where segregated accounts are not
required by the 1940 Act and the rules adopted thereunder, place cash or other
liquid assets in a segregated account for the Fund in an amount at least equal
to the value of the Fund's total assets committed to the consummation of the
forward contract. For each forward foreign currency exchange contract that is
used to hedge a securities position denominated in a foreign currency, but for
which the hedging position no longer provides, in the opinion of the Advisor or
the sub-advisor, sufficient protection to consider the contract to be a hedge,
the Fund maintains with the Custodian a segregated account of cash or other
liquid assets in an amount at least equal to the portion of the contract that is
no longer sufficiently covered by such hedge. If the value of the securities
placed in the segregated account declines,


                                      -32-
<PAGE>   193
additional cash or securities will be placed in the account so that the value of
the account will equal the amount of the Fund's unhedged exposure (in the case
of securities denominated in a foreign currency) or commitment with respect to
the contract. Hedging transactions may be made from any foreign currency into
U.S. dollars or into other appropriate currencies.

         At or before the maturity of a forward contract, a Fund may either sell
a portfolio security and make delivery of the currency, or retain the security
and offset its contractual obligation to deliver the currency by purchasing a
second contract pursuant to which the Fund will obtain, on the same maturity
date, the amount of the currency that it is obligated to deliver. If the Fund
retains the portfolio security and engages in an offsetting transaction, the
Fund, at the time of execution of the offsetting transaction, will incur a gain
or a loss to the extent that movement has occurred in forward contract prices.
Should forward prices decline during the period between the Fund's entering into
a forward contract for the sale of currency and the date it enters into an
offsetting contract for the purchase of the currency, the Fund will realize a
gain to the extent the price of the currency it has agreed to sell exceeds the
price of the currency it has agreed to purchase. Should forward prices increase,
the Fund will suffer a loss to the extent the price of the currency it has
agreed to purchase exceeds the price of the currency it has agreed to sell.

         The cost to a Fund of engaging in currency transactions with factors
such as, the currency involved, the length of the contract period and the
prevailing market conditions. Because transactions in currency exchange are
usually conducted on a principal basis, no fees or commissions are involved. The
use of forward currency contracts does not eliminate fluctuations in the
underlying prices of the securities.

         If a devaluation of a currency is generally anticipated, a Fund may not
be able to contract to sell the currency at a price above the devaluation level
it anticipates.

         The Funds, in addition, may combine forward currency exchange contracts
with investments in securities denominated in other currencies in an attempt to
create a combined investment position, the overall performance of which will be
similar to that of a security denominated in a Fund's underlying currency. For
instance, a Fund could purchase a U.S. dollar-denominated security and at the
same time enter into a forward currency exchange contract to exchange U.S.
dollars for its underlying currency at a future date. By matching the amount of
U.S. dollars to be exchanged with the anticipated value of the U.S.
dollar-denominated security, the Fund may be able to "lock in" the foreign
currency value of the security and adopt a synthetic investment position whereby
the Fund's overall investment return from the combined position is similar to
the return from purchasing a foreign currency-denominated instrument.

         There is a risk in adopting a synthetic investment position. It is
impossible to forecast with absolute precision what the market value of a
particular security will be at any given time. If the value of a security
denominated in the U.S. dollar or other foreign currency is not exactly matched
with a Fund's obligation under a forward currency exchange contract on the date
of maturity, the Fund may be exposed to some risk of loss from fluctuations in
that currency. Although the


                                      -33-
<PAGE>   194
Advisor and each sub-advisor will attempt to hold such mismatching to a minimum,
there can be no assurance that the Advisor or the Fund's sub-advisor will be
able to do so.

         There is less protection against defaults in the forward trading to
currencies than there is in trading such currencies on an exchange because such
forward contracts are not guaranteed by an exchange or clearing house. The
Commodity Futures Trading Commission has indicated that it may assert
jurisdiction over forward contracts in foreign currencies and attempt to
prohibit certain entities from engaging in such transactions. In the event that
such prohibition included the Fund, it would cease trading such contracts.
Cessation of trading might adversely affect the performance of a Fund.

         - OPTIONS ON FOREIGN CURRENCIES. The Short Term High Quality Bond,
California Insured Intermediate Municipal, International Growth and Growth Funds
may purchase and write put and call options on foreign currencies for the
purpose of hedging against declines in the U.S. dollar value of foreign
currency-denominated portfolio securities and against increases in the U.S.
dollar cost of such securities to be acquired. Such hedging includes cross
hedging and proxy hedging where the options to buy or sell currencies involve
other currencies besides the U.S. dollar. As one example, a decline in the U.S.
dollar value of a foreign currency in which securities are denominated will
reduce the U.S. dollar value of the securities, even if their value in the
foreign currency remains constant. To protect against diminutions in the value
of securities held by a Fund in a particular foreign currency, the Fund may
purchase put options on the foreign currency. If the value of the currency does
decline, the Fund will have the right to sell the currency for a fixed amount in
U.S. dollars and may thereby offset, in whole or in part, the adverse effect on
its portfolio that otherwise would have resulted. When an increase in the U.S.
dollar value of a currency in which securities to be acquired are denominated is
projected, thereby increasing the cost of the securities, the Fund conversely
may purchase call options on the currency. The purchase of such options could
offset, at least partially, the effects of the adverse movements in exchange
rates. As in the case of other types of options, however, the benefit to the
Fund deriving from purchases of foreign currency options will be reduced by the
amount of the premium and related transaction costs. In addition, if currency
exchange rates do not move in the direction, or to the extent anticipated, the
Fund could sustain losses on transactions in foreign currency options that would
require it to forego a portion or all of the benefits of advantageous changes in
the rates.

         The Funds may also write covered call options on foreign currencies for
the types of hedging purposes described above. As one example, when the Advisor
or Fund's sub-advisor anticipates a decline in the U.S. dollar value of foreign
currency-denominated securities due to adverse fluctuations in exchange rates it
could, instead of purchasing a put option, write a covered call option on the
relevant currency. If the expected decline occurs, the option will most likely
not be exercised, and the diminution in value of portfolio securities will be
offset by the amount of the premium received. As in the case of other types of
options, however, the writing of a foreign currency option will constitute only
a partial hedge up to the amount of the premium, and only if rates move in the
expected direction. If this does not occur, the option may be exercised and the


                                      -34-
<PAGE>   195
Fund would be required to purchase or sell the underlying currency at a loss
that may not be offset-by the amount of the premium. Through the writing of
options on foreign currencies, the Fund may also be required to forego all or a
portion of the benefits that might otherwise have been obtained from favorable
movements in exchange rates.

         A call option written on a foreign currency by a Fund is "covered" if
the Fund owns the underlying foreign currency covered by the call or has an
absolute and immediate right to acquire the foreign currency without additional
cash consideration (or for additional cash consideration held in a segregated
account by Boston Safe, the Fund's Custodian, upon conversion or exchange of
other foreign currency held by the Fund). A call option also is covered if the
Fund has a call on the same foreign currency and in the same principal amount as
the call written when the exercise price of the call held (1) is equal to or
less than the exercise price of the call written or (2) is greater than the
exercise price of the call written if the difference is maintained by the Fund
in cash, U.S. Government Securities and other liquid debt securities in a
segregated account with Boston Safe.

         Options on foreign currencies traded on national securities exchanges
are within the jurisdiction of the SEC, as are other securities traded on those
exchanges. As a result, many of the projections provided to traders on organized
exchanges will be available with respect to those transactions. In particular,
all foreign currency option positions entered into on a national securities
exchange are cleared and guaranteed by the OCC, thereby reducing the risk of
counterparty default. Further, a liquid secondary market in options traded on a
national securities exchange may exist, potentially permitting the Fund to
liquidate open positions at a profit prior to their exercise or expiration, or
to limit losses in the event of adverse market movements.

         The purchase and sale of exchange-traded foreign currency options are
subject to the risks of the availability of a liquid secondary market described
above, as well as the risks regarding adverse market movements, margining of
options written, the nature of the foreign currency market, possible
intervention by governmental authorities and the effects of other political and
economic events. In addition, exercise and settlement of exchange-traded foreign
currency options must be made exclusively through the OCC, which has established
banking relationships in applicable foreign countries for this purpose. As a
result, the OCC may, if it determines that foreign governmental restrictions or
taxes would prevent the orderly settlement of foreign currency option exercises,
or would result in undue burdens on the OCC or its clearing member, impose
special procedures on exercise and settlement, such as technical changes in the
mechanics of delivery of currency, the fixing of dollar settlement prices or
prohibitions on exercise.

         SECURITIES IN DEVELOPING COUNTRIES. Although most of the investments of
the Bond & Stock, Growth, International Growth and Emerging Growth Funds are
made in securities of companies in (or governments of) developed countries, the
Funds set forth above may also invest in securities of companies in (or
governments of) developing or emerging countries (sometimes referred to as
"emerging markets"). Each Fund may invest up to 5% of its total assets in
emerging markets. A developing or emerging country is generally considered to be
a country


                                      -35-
<PAGE>   196
that is in the initial stages of its industrialization cycle. Investing in the
equity and fixed-income markets of developing or emerging countries involves
exposure to economic structures that are generally less diverse and mature, and
to political systems that can be expected to have less stability than those of
developed countries. Historical experience indicates that the markets of
developing or emerging countries have been more volatile than the markets of the
more mature economies of developed countries.

         Price movements in the Fund's portfolio may not correlate precisely
with movements in the level of an index and, therefore, the use of options on
securities indexes cannot serve as a complete hedge. Because options on
securities indexes require settlement in cash, the Fund may be forced to
liquidate portfolio securities to meet settlement obligations.

         LENDING OF PORTFOLIO SECURITIES. Each of the California Money, Short
Term High Quality Bond, California Insured Intermediate Municipal, Growth,
International Growth and Emerging Growth Funds will adhere to the following
conditions whenever its portfolio securities are loaned: (1) the Fund must
receive at least 100% cash collateral or equivalent securities from the
borrower; (2) the borrower must increase the collateral whenever the market
value of the securities rises above the level of the collateral; (3) the Fund
must be able to terminate the loan at any time; (4) the Fund must receive
reasonable interest on the loan, as well as any dividends, interest or other
distributions on the loaned securities and any increase in market value; (5) the
Fund may pay only reasonable custodian fees in connection with the loan; and (6)
voting rights on the loaned securities may pass to the borrower, provided that
if a material event adversely affecting the investment occurs, the Trusts' Board
of Trustees must terminate the loan and regain the right to vote the securities.
From time to time, the Funds may pay a part of the interest earned from the
investment of the collateral received for securities loaned to the borrower
and/or a third party that is unaffiliated with the Trust and that is acting as a
"finder." The Funds will not lend more than 20% of their respective total
assets.

         MUNICIPAL OBLIGATIONS. Municipal Obligations are securities, the
interest on which qualifies for exclusion from gross income for federal income
tax purposes in the opinion of bond counsel to the issuer. The three principal
classifications of Municipal Obligations are Municipal Bonds, Municipal
Commercial Paper and Municipal Notes.

         Municipal Bonds, which generally have a maturity of more than one year
when issued, have two principal classifications: General Obligation Bonds and
Revenue Bonds. An AMT-Subject Bond is a particular kind of Revenue Bond. The
classifications of Municipal Bonds and AMT-Subject Bonds are discussed below.

         1.       GENERAL OBLIGATION BONDS. The proceeds of these obligations
                  are used to finance a wide range of public projects, including
                  construction or improvement of schools, highways and roads,
                  and water and sewer systems. General Obligation Bonds are
                  secured by the issuer's pledge of its faith, credit and taxing
                  power for the payment of principal and interest.


                                      -36-
<PAGE>   197
         2.       REVENUE BONDS. Revenue Bonds are issued to finance a wide
                  variety of capital projects, including; electric, gas, water
                  and sewer systems; highways, bridges and tunnels; port and
                  airport facilities; colleges and universities; and hospitals.
                  The principal security for a Revenue Bond is generally the net
                  revenues derived from a particular facility, group of
                  facilities, or, in some cases, the proceeds of a special
                  excise or other specific revenue source. Although the
                  principal security behind these bonds may vary, many provide
                  additional security in the form of a debt service reserve fund
                  which may be used to make principal and interest payments on
                  the issuer's obligations. Some authorities provide further
                  security in the form of a state's ability (without obligation)
                  to make up deficiencies in the debt service reserve fund.

         3.       AMT-SUBJECT BONDS. AMT-Subject Bonds are considered Municipal
                  Bonds if the interest paid on them is excluded from gross
                  income for federal income tax purposes and if they are issued
                  by or on behalf of public authorities to raise money to
                  finance, for example, privately operated manufacturing or
                  housing facilities, publicly operated airport, dock, wharf, or
                  mass-commuting facilities. The payment of the principal and
                  interest on these bonds is dependent solely on the ability of
                  the facility's user to meet its financial obligations and the
                  pledge, if any, of real and personal property so financed as
                  security for such payment.

         MUNICIPAL COMMERCIAL PAPER issues typically represent short-term,
unsecured, negotiable promissory notes. These obligations are issued by agencies
of state and local governments to finance seasonal working capital needs of
municipalities or to provide interim construction financing, and are paid from
general revenues of municipalities or are refinanced with long-term debt. In
most cases, Municipal Commercial Paper is backed by letters of credit, lending
agreements, note repurchase agreements or other credit facility agreements
offered by banks or other institutions.

         MUNICIPAL NOTES generally are used to provide for short-term capital
needs and generally have maturities of one year or less. Municipal Notes
include:

         1.       TAX ANTICIPATION NOTES. Tax Anticipation Notes are issued to
                  finance working capital needs of municipalities. Generally,
                  they are issued in anticipation of various seasonal tax
                  revenues, such as income, sales, use and business taxes and
                  are payable from these specific future taxes.

         2.       REVENUE ANTICIPATION NOTES. Revenue Anticipation Notes are
                  issued in expectation of receipt of other kinds of revenue,
                  such as federal revenues available under the Federal Revenue
                  Sharing Program.


                                      -37-
<PAGE>   198
         3.       BOND ANTICIPATION NOTES. Bond Anticipation Notes are issued to
                  provide interim financing until long-term financing can be
                  arranged. In most cases, the long-term bonds provide the money
                  for the repayment of the notes.

         4.       CONSTRUCTION LOAN NOTES. Construction Loan Notes are sold to
                  provide construction financing. Permanent financing, the
                  proceeds of which are applied to the payment of Construction
                  Loan Notes, is sometimes provided by a commitment by GNMA to
                  purchase the loan, accompanied by a commitment by the Federal
                  Housing Administration to insure mortgage advances thereunder.
                  In other instances, permanent financing is provided by
                  commitments of banks to purchase the loan. The Tax-Exempt
                  Money Market, California Money, Tax-Exempt Bond, California
                  Municipal, California Insured Intermediate Municipal and
                  Florida Insured Municipal Funds (the "Municipal Funds") will
                  only purchase Construction Loan Notes that are subject to GNMA
                  or bank purchase commitments.

         From time to time, proposals to restrict or eliminate the federal
income tax exemption for interest on Municipal Obligations have been introduced
before Congress. Similar proposals may be introduced in the future. If a
proposal to restrict or eliminate the federal tax exemption for interest on
Municipal Obligations were enacted, the availability of Municipal Obligations
for investment by the Municipal Funds would be adversely affected. In such
event, the Municipal Funds would reevaluate their respective investment
objectives and policies and submit possible changes in the structure of the
Funds for the consideration of shareholders.

         PARTICIPATION INTERESTS. The Municipal Funds may invest in
participation interests purchased from banks in floating rate or variable rate
municipal obligations (such as AMT-Subject Bonds) owned by banks. A
participation interest gives the purchaser an undivided interest in the
municipal security in the proportion that the relevant Fund's participation
interest bears to the total principal amount of the municipal security and
provides a demand repurchase feature. Each participation is backed by an
irrevocable letter of credit or guarantee of a bank that meets the prescribed
quality standards of the Fund. A Fund has the right to sell the instrument back
to the issuing bank or draw on the letter of credit on demand for all or any
part of the Fund's participation interest in the municipal security, plus
accrued interest. Banks will retain or receive a service fee, letter of credit
fee and a fee for issuing repurchase commitments in an amount equal to the
excess of the interest paid on the municipal obligations over the negotiated
yield at which the instruments were purchased by the Fund. Participation
interests in the form to be purchased by the Fund are new instruments, and no
ruling of the Internal Revenue Service has been secured relating to their
tax-exempt status. The Funds intend to purchase participation interests based
upon opinions of counsel to the issuer to the effect that income from them is
tax-exempt to the Fund.

         STAND-BY COMMITMENTS. The Municipal Funds may acquire stand-by
commitments with respect to municipal obligations held in their respective
portfolios. Under a stand-by commitment, a broker-dealer, dealer or bank would
agree to purchase, at the relevant Funds' option, a specified municipal security
at a specified price. Thus, a stand-by commitment may be


                                      -38-
<PAGE>   199
viewed as the equivalent of a "put" option acquired by a Fund with respect to a
particular municipal security held in the Fund's portfolio.

         The amount payable to a Fund upon its exercise of a stand-by commitment
normally would be (1) the acquisition cost of the municipal security (excluding
any accrued interest that the Fund paid on the acquisition), less any amortized
market premium or plus any amortized market or original issue discount during
the period the Fund owned the security, plus, (2) all interest accrued on the
security since the last interest payment date during the period the security was
owned by the Fund. Absent unusual circumstances, the Fund would value the
underlying municipal security at amortized cost. As a result, the amount payable
by the broker-dealer, dealer or bank during the time a stand-by commitment is
exercisable would be substantially the same as the value of the underlying
municipal obligation.

         A Fund's right to exercise a stand-by commitment would be unconditional
and unqualified. Although a Fund could not transfer a stand-by commitment, it
could sell the underlying municipal security to a third party at any time. It is
expected that stand-by commitments generally will be available to the Funds
without the payment of any direct or indirect consideration. The Funds may,
however, pay for stand-by commitments if such action is deemed necessary. In any
event, the total amount paid for outstanding stand-by commitments held in a
Fund's portfolio would not exceed 1/2 of 1% of the value of a Fund's total
assets calculated immediately after each stand-by commitment is acquired.

         The Funds intend to enter into stand-by commitments only with
broker-dealers, dealers or banks that the Advisor or their sub-advisor believes
present minimum credit risks. A Fund's ability to exercise a stand-by commitment
will depend upon the ability of the issuing institution to pay for the
underlying securities at the time the stand-by commitment is exercised. The
credit of each institution issuing a stand-by commitment to a Fund will be
evaluated on an ongoing basis by the Advisor or its sub-advisor in accordance
with procedures established by the Board of Trustees.

         A Fund intends to acquire stand-by commitments solely to facilitate
portfolio liquidity and does not intend to exercise its right thereunder for
trading purposes. The acquisition of a stand-by commitment would not affect the
valuation of the underlying municipal security. Each stand-by commitment will be
valued at zero in determining net asset value. Should a Fund pay directly or
indirectly for a stand-by commitment, its costs will be reflected in realized
gain or loss when the commitment is exercised or expires. The maturity of a
municipal security purchased by a Fund will not be considered shortened by any
stand-by commitment to which the obligation is subject. Thus, stand-by
commitments will not affect the dollar-weighted average maturity of a Fund's
portfolio.


                                      -39-
<PAGE>   200
SPECIAL CONSIDERATIONS RELATING TO CALIFORNIA MUNICIPAL
OBLIGATIONS

         The ability of issuers to pay interest on, and repay principal of,
California municipal obligations ("California Municipal Obligations") may be
affected by (1) amendments to the California Constitution and related statutes
that limit the taxing and spending authority of California government entities,
(2) voter initiatives, (3) a wide variety of California laws and regulations,
including laws related to the operation of health care institutions and laws
related to secured interests in real property and (4) the general financial
condition of the State of California. The following information constitutes only
a brief summary, and is not intended as a complete description. The information
has been drawn, in some cases by excerpt, from official statements relating to
securities offerings of the State of California available as of the date of this
Statement of Additional Information. While the information has not been
independently verified by the California Money, California Municipal Fund, or
California Insured Intermediate Municipal Fund (the "California Fund"), the
California Fund has no reason to believe that such information is not correct in
all material respects.

         AMENDMENTS TO THE CALIFORNIA CONSTITUTION AND RELATED STATUTES.
Since 1978 the California voters have voted to amend the California Constitution
in a number of ways which could affect a governmental entity's ability to budget
or raise sufficient funds to meet debt service on bonds and other obligations.

         These amendments, among other things, provide maximum limits on ad
valorem taxes on real property, appropriation limits for state and local
governmental entities, require new local taxes to be submitted to the electorate
and make it generally more difficult for local agencies to levy and maintain
fees, charges and assessments for municipal services and programs. These
amendments may adversely affect the ability of issuers of California Municipal
Obligations to make timely payments of principal and interest, and may adversely
affect the supply of California Municipal Obligations.

         OTHER RELEVANT CALIFORNIA LAWS. A wide variety of California laws and
regulations may affect, directly or indirectly, the payment of interest on, or
the repayment of the principal of, California Municipal Obligations in which the
California Money, California Municipal and California Insured Intermediate
Municipal Funds may invest. The impact of such laws and regulations on
particular California Municipal Obligations may vary depending upon numerous
factors including, among others, the particular type of Municipal Security
involved, the public purpose funded by the Municipal Security and the nature and
extent of insurance or other security for payment of principal and interest on
the Municipal Security. For example, California Municipal Obligations which are
payable only from the revenues derived from a particular facility may be
adversely affected by California laws or regulations which make it more
difficult for the particular facility to generate revenues sufficient to pay
such interest and principal, including, among others, laws and regulations which
limit the amount of fees, rates or other charges which may be imposed for use of
the facility or which increase competition among facilities of that type


                                      -40-
<PAGE>   201
or which limit or otherwise have the effect of reducing the use of such
facilities generally, thereby reducing the revenues generated by the particular
facility. California Municipal Obligations, the payment of interest and
principal on which is insured in whole or in part by a California governmentally
created fund, may be adversely affected by California laws or regulations which
restrict the aggregate insurance proceeds available for payment of principal and
interest in the event of a default on such Municipal Obligations.

         Certain California Municipal Obligations in which the California Money,
California Municipal and California Insured Intermediate Funds may invest may be
obligations that are payable solely from the revenues of health care
institutions. Certain provisions under California law may adversely affect such
revenues and, consequently, payment on those California Municipal Obligations.

         Certain California Municipal Obligations in which the California Money,
California Municipal and California Insured Intermediate Municipal Funds may
invest may be obligations which are secured in whole or in part by a mortgage or
deed of trust on real property. California has five principal statutory
provisions which limit the remedies of a creditor secured by a mortgage or deed
of trust, two of which limit the creditor's right to obtain a deficiency
judgment. One of the limitations is based on the method of foreclosure and the
other on the type of debt secured. Under the former, a deficiency judgment is
barred when the foreclosure is accomplished by means of a nonjudicial trustee's
sale. Under the latter, a deficiency judgment is barred when the foreclosed
mortgage or deed of trust secures certain purchase money obligations. Another
California statute, commonly known as the "one form of action" rule, requires
the creditors secured by real property to exhaust their real property security
by foreclosure before bringing a personal action against the debtor. The fourth
statutory provision limits any deficiency judgment obtained by a creditor
secured by real property following a judicial sale of such property to the
excess of the outstanding debt over the fair value of the property at the time
of the sale, thus preventing the creditor from obtaining a large deficiency
judgment against the debtor as the result of low bids at a judicial sale. The
fifth statutory provision gives the debtor the right to redeem the real property
from any judicial foreclosure sale as to which a deficiency judgment may be
ordered against the debtor.

         Upon the default of a mortgage or deed of trust with respect to
California real property, the creditor's nonjudicial foreclosure rights under
the power of sale contained in the mortgage or deed of trust are subject to the
constraints imposed by California law upon transfers of title to real property
by private power of sale. During the three-month period beginning with the
filing of a formal notice of default, the debtor is entitled to reinstate the
mortgage by making any overdue payments. Under standard loan servicing
procedures, the filing of the formal notice of default does not occur unless at
least three full monthly payments have become due and remain unpaid. The power
of sale is exercised by posting and publishing a notice of sale for at least 20
days after expiration of the three-month reinstatement period. Therefore, the
effective minimum period for foreclosing on a home mortgage could be in excess
of seven months after the initial default. Such time delays in collections could
disrupt the flow of revenues available to an issuer for the payment


                                      -41-
<PAGE>   202
of debt service on the outstanding obligations if such defaults occur with
respect to a substantial number of mortgages or deeds of trust securing an
issuer's obligations.

         In addition, a court could find that there is sufficient involvement of
the issuer in the nonjudicial sale of property securing a mortgage for such
private sale to constitute "state action," and could hold that the
private-right-of-sale proceedings violate the due process requirements of the
Federal or State Constitutions, consequently preventing an issuer from using the
nonjudicial foreclosure remedy described above.

         Certain California Municipal Obligations in which the California Money,
California Municipal and California Insured Intermediate Municipal Funds may
invest may be obligations which finance the acquisition of single family home
mortgages for low and moderate income mortgagors. These obligations may be
payable solely from revenues derived from the home mortgages, and are subject to
the California statutory limitations described above applicable to obligations
secured by real property. Under California anti-deficiency legislation, there is
no personal recourse against a mortgagor of a single family residence purchased
with the loan secured by the mortgage, regardless of whether the creditor
chooses judicial or nonjudicial foreclosure.

         Under California law, mortgage loans secured by single family
owner-occupied dwellings may be prepaid at any time. Prepayment charges on such
mortgage loans may be imposed only with respect to voluntary prepayments made
during the first five years during the term of the mortgage loan, and cannot in
any event exceed six months' advance interest on the amount prepaid in any
twelve month period in excess of 20% of the original amount of the mortgage
loan. This limitation could affect the flow of revenues available to an issuer
for debt service on the outstanding debt obligations which financed such home
mortgages.

         Because of the diverse nature of such laws and regulations and the
impossibility of either predicting in which specific California Municipal
Obligations the California Money, California Municipal and California Insured
Intermediate Municipal Funds will invest from time to time or predicting the
nature or extent of future changes in existing laws or regulations or the future
enactment or adoption of additional laws or regulations, it is not presently
possible to determine the impact of such laws and regulations on the Municipal
Obligations in which the California Money, California Municipal and California
Insured Intermediate Municipal Funds may invest and, therefore, on the units of
the California Money, California Municipal or California Insured Intermediate
Municipal Funds.

         ADDITIONAL CONSIDERATIONS. With respect to Municipal Obligations issued
by the State of California and its political subdivisions, as well as certain
other governmental issuers such as the Commonwealth of Puerto Rico, the Trusts
cannot predict what legislation, if any, may be proposed in the California State
Legislature as regards the California State personal income tax status of
interest on such obligations, or which proposals, if any, might be enacted. Such
proposals, if enacted, might materially adversely affect the availability of
California Municipal Obligations for investment by the California Money,
California Municipal and California Insured


                                      -42-
<PAGE>   203
Intermediate Municipal Funds and the value of the Fund's investments. In such
event, the Trustees would reevaluate the investment objective and policies of
the California Money, California Municipal and California Insured Intermediate
Municipal Funds and consider changes in its investments structure or possible
dissolution.

SPECIAL CONSIDERATIONS RELATING TO FLORIDA MUNICIPAL
OBLIGATIONS

         The following information constitutes only a brief summary, and does
not purport to be a complete description. The information in this section is
updated periodically. While the Fund has not independently verified such
information, it has no reason to believe that such information is not correct in
all material respects. The source of the 1994-95, 1995-96 and 1996-97 figures
set forth below is the Revenue and Economic Analysis Unit of the Executive
Office of the Governor of the State of Florida. Such figures are preliminary and
subject to change without notice.

         An amendment to the State Constitution was approved by statewide ballot
in the November 8, 1994 general election which is commonly referred to as the
"Limitation on State Revenues Amendment." This amendment provides that State
revenues collected for any fiscal year shall be limited to State revenues
allowed under the amendment for the prior fiscal year plus an adjustment for
growth. Growth is defined as an amount equal to the average annual rate of
growth in State personal income over the most recent twenty quarters times the
State revenues allowed under the amendment for the prior fiscal year. State
revenues collected for any fiscal year in excess of this limitation are required
to be transferred to the budget stabilization fund until the fund reaches the
maximum balance specified in Section 19(g) of Article III of the State
Constitution, and thereafter is required to be refunded to taxpayers as provided
by general law. The limitation on State revenues imposed by the amendment may be
increased by the Legislature, by a two-thirds vote of each house.

         The term "State revenues," as used in the amendment, means taxes, fees,
licenses, and charges for services imposed by the Legislature on individuals,
businesses, or agencies outside State government. However, the term "State
revenues" does not include: (i) revenues that are necessary to meet the
requirements set forth in documents authorizing the issuance of bonds by the
State; (ii) revenues that are used to provide matching funds for the federal
Medicaid program with the exception of the revenues used to support the Public
Medical Assistance Trust Fund or its successor program and with the exception of
State matching funds used to fund elective expansions made after July 1, 1994;
(iii) proceeds from the State lottery returned as prizes; (iv) receipts of the
Florida Hurricane Catastrophe Fund; (v) balances carried forward from prior
fiscal years; (vi) the proceeds from the sale of goods (e.g. land, buildings);
or (vii) revenue from taxes, licenses, fees and charges for services required to
be imposed by any amendment or revision to the State Constitution after July 1,
1994. The amendment took effect on January 1, 1995 and is applicable to State
fiscal year 1995-96.


                                      -43-
<PAGE>   204
         It should be noted that many of the provisions of the amendment are
ambiguous, and likely will not be clarified until State courts have ruled on
their meanings. Further, it is unclear how the Legislature will implement the
language of the amendment and whether such implementing legislation itself will
be the subject of further court interpretation.

         The Fund cannot predict the impact of the amendment on State finances.
To the extent local governments traditionally receive revenues from the State
which are subject to, and limited by, the amendment, the future distribution of
such State revenues may be adversely affected by the amendment.

         Hurricanes continue to threaten Florida resulting in significant
property damages. The 1995 hurricane season was especially active. The Fund
cannot predict the impact on state finances resulting from repeated hurricane
damage.

         LOWER-RATED SECURITIES. The Income, Tax-Exempt Bond, Bond & Stock,
Growth & Income, Growth and Emerging Growth Funds may each invest up to 35% of
their total assets, respectively, in non-investment grade securities (rated Ba
and lower by Moody's and BB and lower by S&P) or unrated securities determined
to be of comparable quality. The High Yield Fund may invest entirely in such
securities and will generally invest at least 65% of its assets in such
securities. Such securities carry a high degree of risk (including the
possibility of default or bankruptcy of the issuer of such securities),
generally involve greater volatility of price and risk of principal and income,
and may be less liquid, than securities in the higher rating categories and are
considered speculative. See the Appendix to this SAI for a more detailed
description of the ratings assigned by ratings organizations and their
respective characteristics.

         Historically, economic downturns have disrupted the high yield market
and impaired the ability of issuers to repay principal and interest. Also, an
increase in interest rates could adversely affect the value of such obligations
held by any of the Funds set forth above. Prices and yields of high yield
securities will fluctuate over time and may affect a Fund's net asset value. In
addition, investments in high yield zero coupon or pay-in-kind bonds, rather
than income-bearing high yield securities, may be more speculative and may be
subject to greater fluctuations in value due to changes in interest rates.

         The trading market for high yield securities may be thin to the extent
that there is no established retail secondary market or because of a decline in
the value of such securities. A thin trading market may limit the ability of the
Trustees to accurately value high yield securities in the Fund's portfolio and
to dispose of those securities. Adverse publicity and investor perceptions may
decrease the value and liquidity of high yield securities. These securities may
also involve special registration responsibilities, liabilities and costs.

         Credit quality in the high yield securities market can change suddenly
and unexpectedly, and even recently-issued credit ratings may not fully reflect
the actual risks posed by a particular high yield security. For these reasons,
it is the policy of the Advisor and the sub-advisor of each


                                      -44-
<PAGE>   205
of the Funds not to rely exclusively on ratings issued by established credit
rating agencies, but to supplement such ratings with its own independent and
ongoing review of credit quality. The achievement of a Fund's investment
objectives by investment in such securities may be more dependent on the Advisor
or its sub-advisor's credit analysis than is the case for higher quality bonds.
Should the rating of a portfolio security be downgraded the Advisor or the
Fund's sub-advisor will determine whether it is in the best interest of the Fund
to retain or dispose of the security.

         Prices for below investment-grade securities may be affected by
legislative and regulatory developments. For example, new federal rules require
savings and loan institutions to gradually reduce their holdings of this type of
security. Also, Congress from time to time has considered legislation which
would restrict or eliminate the corporate tax deduction for interest payments on
these securities and would regulate corporate restructurings. Such legislation
may significantly depress the prices of outstanding securities of this type.

                             INVESTMENT RESTRICTIONS

         Certain of the Funds' and Portfolios' investment restrictions set forth
below are fundamental policies. A fundamental policy may not be changed without
the vote of a majority of the outstanding voting securities of the Fund or
Portfolio, as defined in the 1940 Act. Such a majority is defined in the 1940
Act as the lesser of (a) 67% or more of the shares present at a meeting of
shareholders of the Fund or Portfolio, if the holders of more than 50% of the
outstanding shares of the Fund or Portfolio are present or represented by proxy,
or (b) more than 50% of the outstanding shares of the Fund or Portfolio. A
fundamental policy affecting a particular Fund or Portfolio may not be changed
without the vote of a majority of the outstanding shares of the affected Fund or
Portfolio.

         RESTRICTIONS APPLICABLE TO THE CALIFORNIA MONEY, SHORT TERM HIGH
QUALITY BOND, TARGET MATURITY 2002, CALIFORNIA MUNICIPAL, CALIFORNIA INSURED
INTERMEDIATE MUNICIPAL, FLORIDA INSURED MUNICIPAL, GROWTH, INTERNATIONAL GROWTH
AND EMERGING GROWTH FUNDS:

         Restrictions 1 through 16 are fundamental policies of the Funds.
Investment restrictions 17 through 26 may be changed by the WM Trust II's Board
of Trustees at any time, without shareholder approval.

The above listed Funds are prohibited from:

         1.       Purchasing the securities of any issuer (other than U.S.
                  Government securities) if as a result more than 5% of the
                  value of the Fund's total assets would be invested in the
                  securities of the issuer (the "5% Limitation"), except that up
                  to 25% of the value of the Fund's total assets may be invested
                  without regard to the 5% Limitation; provided that this
                  restriction shall not apply to the California Money,


                                      -45-
<PAGE>   206
                  California Municipal, California Insured Intermediate
                  Municipal and Florida Insured Municipal Funds.

         2.       Purchasing more than 10% of the securities of any class of any
                  one issuer; provided that this limitation shall not apply to
                  investments in U.S. Government securities; provided further
                  that this restriction shall not apply to the California Money,
                  California Municipal, California Insured Intermediate
                  Municipal, Florida Insured Municipal and Growth Funds; and
                  provided further that the Growth Fund may not own more than
                  10% of the outstanding voting securities of a single issuer.

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

         4.       Making short sales of securities or maintaining a short
                  position; provided that this restriction shall not apply to
                  the Growth and International Growth Funds.

         5.       Borrowing money, except that (a) the Funds may (i) enter into
                  reverse repurchase agreements or (ii) borrow from banks for
                  temporary or emergency (not leveraging) purposes including the
                  meeting of redemption requests that might otherwise require
                  the untimely disposition of securities in an aggregate amount
                  not exceeding 30% of the value of a Fund's total assets
                  (including the amount borrowed) valued at market less
                  liabilities (not including the amount borrowed) at the time
                  the borrowing is made, (b) the Short Term High Quality Bond,
                  California Municipal, California Insured Intermediate
                  Municipal, Florida Insured Municipal, Growth, International
                  Growth and Emerging Growth Fund may enter into futures
                  contracts, and (c) the Short Term High Quality Bond Fund may
                  engage in dollar roll transactions; provided that whenever
                  borrowings pursuant to (a) above (except that whenever
                  borrowings pursuant to (a)(ii) above) exceed 5% of the value
                  of a Fund's total assets, the Fund will not purchase any
                  securities; and provided further that the Short Term High
                  Quality Bond Fund is prohibited from borrowing money or
                  entering into reverse repurchase agreements or dollar roll
                  transactions in the aggregate in excess of 33 1/3% of the
                  Fund's total assets (after giving effect to any such
                  borrowing).

         6.       Pledging, hypothecating, mortgaging or otherwise encumbering
                  more than 30% of the value of the Fund's total assets. For
                  purposes of this restriction, (a) the deposit of assets in
                  escrow in connection with the writing of covered put or call
                  options and the purchase of securities on a when-issued or
                  delayed-delivery basis and (b) collateral arrangements with
                  respect to (i) the purchase and sale of options on securities,
                  options on indexes and options on foreign currencies, and (ii)
                  initial or

                                      -46-
<PAGE>   207
                  variation margin for futures contracts will not be deemed to
                  be pledges of a Fund's assets.

         7.       Underwriting the securities of other issuers, except insofar
                  as the Fund may be deemed an underwriter under the Securities
                  Act of 1933, as amended, by virtue of disposing of portfolio
                  securities.

         8.       Purchasing or selling real estate or interests in real estate,
                  except that a Fund may purchase and sell securities that are
                  secured, directly or indirectly, by real estate and may
                  purchase securities issued by companies that invest or deal in
                  real estate.

         9.       Investing in commodities, except that the Short Term High
                  Quality Bond, California Municipal, California Insured
                  Intermediate Municipal, Florida Insured Municipal, Growth,
                  International Growth and Emerging Growth Funds may invest in
                  futures contracts and options on futures contracts. The entry
                  into forward foreign currency exchange contracts is not and
                  shall not be deemed to involve investing in
                  commodities.

         10.      Investing in oil, gas or other mineral exploration or
                  development programs.

         11.      Making loans, except through the purchase of qualified debt
                  obligations, loans of portfolio securities (except in the case
                  of the California Municipal and Florida Insured Municipal
                  Funds) and the entry into repurchase agreements.

         12.      Investing in securities of other investment companies
                  registered or required to be registered under the 1940 Act,
                  except as they may be acquired as part of a consolidation,
                  reorganization, acquisition of assets or an offer of exchange
                  or as otherwise permitted by law, including the 1940 Act.

         13.      Purchasing any securities that would cause more than 25% of
                  the value of the Fund's total assets at the time of purchase
                  to be invested in the securities of issuers conducting their
                  principal business activities in the same industry provided
                  that this limitation shall not apply to the purchase of (a)
                  U.S. Government securities, (b) municipal obligations issued
                  by governments or political subdivisions of governments or (c)
                  with respect to the California Money Fund, U.S. dollar-
                  denominated bank instruments such as certificates of deposit,
                  time deposits, bankers' acceptances and letters of credit that
                  have been issued by U.S. banks.

         14.      Purchasing, writing or selling puts, calls, straddles, spreads
                  or combinations thereof; provided that this restriction shall
                  not apply to the Short Term High Quality Bond, California
                  Insured Intermediate Municipal and Growth Funds; and provided
                  further that (a) the International Growth and Emerging Growth
                  Funds may purchase, write and sell covered put and call
                  options on securities, (b)

                                      -47-
<PAGE>   208
                  California Municipal, Florida Insured Municipal, International
                  Growth and Emerging Growth Funds may purchase, write and sell
                  futures contracts and options on futures contracts, (c) the
                  California Money, California Municipal and Florida Insured
                  Municipal Funds may acquire stand-by commitments, (d) the
                  International Growth and Emerging Growth Funds may purchase
                  and write put and call options on stock indexes, and (e) the
                  International Growth Fund may purchase put and call options
                  and write covered call options on foreign currency contracts.

         15.      With respect to the Growth Fund, investing more than 35% of
                  the fund's assets in non-investment grade debt securities.

         16.      With respect to the Short Term High Quality Bond Fund, having
                  a dollar-weighted average portfolio maturity in excess of five
                  years.

         17.      With respect to the Growth Fund, investing more than 25% of
                  the Fund's assets in foreign securities.

         18.      Purchasing securities that are not readily marketable if more
                  than 10% of the net assets of a Money Fund, or more than 15%
                  of the net assets of a Non-Money Fund, would be invested in
                  such securities, including, but not limited to: (1) repurchase
                  agreements with maturities greater than seven calendar days;
                  (2) time deposits maturing in more than seven calendar days;
                  (3) to the extent a liquid secondary market does not exist for
                  the instruments, futures contracts and options thereon; (4)
                  certain over-the-counter options, as described in this SAI;
                  (5) certain variable rate demand notes having a demand period
                  of more than seven days; and (6) certain Rule 144A restricted
                  securities that are deemed to be illiquid.

         19.      Investing more than 10% of its total assets in time deposits
                  maturing in more than seven calendar days; provided that this
                  restriction shall not apply to the Short Term High Quality
                  Bond and Growth Funds.

         20.      Purchasing any security if as a result the Fund would then
                  have more than 5% of its total assets invested in securities
                  of companies (including predecessors) that have been in
                  continuous operation for less than three years; provided that
                  in the case of industrial revenue bonds purchased for the
                  Municipal Funds, this restriction shall apply to the entity
                  supplying the revenues from which the issue is to be paid.

         21.      Making investments for the purpose of exercising control or
                  management.

         22.      Purchasing or retaining securities of any company if, to the
                  knowledge of the Company, any of the Company's officers or
                  Trustees or any officer or director of the Advisor or a
                  sub-advisor individually owns more than 1/2 of 1% of the

                                      -48-
<PAGE>   209
                  outstanding securities of such company and together they own
                  beneficially more than 5% of the securities.

         23.      Investing in warrants, (other than warrants acquired by the
                  Fund as part of a unit or attached to securities at the time
                  of purchase) if, as a result, the investments (valued at the
                  lower of cost or market) would exceed 5% of the value of the
                  Fund's net assets or if, as a result, more than 2% of the
                  Fund's net assets would be invested in warrants not listed on
                  a recognized United States or foreign stock exchange, to the
                  extent permitted by applicable state securities laws.

         24.      Purchasing or selling interests in real estate limited
                  partnerships.

         25.      Investing in mineral leases.

         26.      Entering into Strategic Transactions otherwise prohibited by
                  the Fund's investment restrictions or in the aggregate in
                  excess of 25% of the Fund's net assets, for purposes other
                  than bona fide hedging positions or that are not "covered,"
                  subject to such greater percentage limitations as may be
                  imposed by the Advisor from time to time.

         For purposes of the investment restrictions described above, the issuer
of a municipal security is deemed to be the entity (public or private)
ultimately responsible for the payment of the principal of and interest on the
security. For purposes of investment restriction Number 13 above, AMT-Subject
Bonds and Revenue Bonds, the payment of principal and interest on which is the
ultimate responsibility of companies within the same industry, are grouped
together as an "industry." The percentage limitations contained in the
restrictions listed above apply at the time of purchase of securities, and shall
not be considered violated unless an excess or deficiency occurs immediately
after and as a result of such purchase.

THE INVESTMENT RESTRICTIONS SET FORTH BELOW HAVE BEEN ADOPTED BY WM TRUST I WITH
RESPECT TO THE FUNDS WITHIN WM TRUST I AS FUNDAMENTAL POLICIES.

EACH OF THE MONEY MARKET AND TAX-EXEMPT MONEY MARKET FUNDS
MAY NOT:

1.       invest in common stocks or other equity securities; (1) 
2.       borrow money for investment purposes, except that each Fund may borrow
         up to 5% of its total assets in emergencies, and may borrow up to
         33 1/3% of such assets to meet

- --------

         (1)For purposes of determining compliance with this restriction, the
Tax-Exempt Money market Fund will not consider securities of other Money market
Funds to be "common stocks or other equities."

                                      -49-
<PAGE>   210
         redemption requests that would otherwise result in the untimely
         liquidation of vital parts of its portfolio;

3.       buy securities on margin, mortgage or pledge its securities, or engage
         in "short" sales;

4.       buy or sell options;

5.       act as underwriter of securities issued by others;

6.       buy securities restricted as to resale under federal securities laws
         (other than securities eligible for resale pursuant to Rule 144A under
         the Securities Act of 1933, as amended, and except in connection with
         repurchase agreements);

7.       buy or sell real estate, real estate investment trust securities,
         commodities, or oil, gas and mineral interests;

8.       lend money, except in connection with repurchase agreements and for
         investments made in accordance with Fund policies discussed in the
         Prospectus;

9.       issue senior securities;

10.      invest more than 5%* of its total assets in the securities of any
         single issuer (except for the United States Government, its agencies or
         instrumentalities);

11.      invest more than 25%* of its total assets in securities of issuers in
         any single industry;

12.      invest more than 10%* of its net assets in illiquid securities;

13.      invest in companies for the purpose of exercising control.

THE MONEY MARKET FUND MAY NOT:

1.       invest in other investment companies (except as part of a merger).

THE TAX-EXEMPT MONEY MARKET FUND MAY NOT:

1.       invest more than 20%* of its assets in obligations that pay interest
         subject to federal alternative minimum tax.

*  Percentage at the time the investment is made.

EACH OF THE INCOME, U.S. GOVERNMENT SECURITIES AND TAX-EXEMPT BOND
FUNDS MAY NOT:

1.       invest more than 5%* of its total assets in any single issuer other
         than U.S. Government Securities, except that up to 25% of a Fund's
         assets may be invested without regard to this 5% limitation;

2.       acquire more than 10%* of the voting securities of any one company;

3.       invest in any company for the purpose of management or exercising
         control;

4.       invest in real estate or commodities, although the Income Fund may
         purchase securities of issuers which deal in real estate, securities
         which are secured by interests in real estate, and/or securities which
         represent interests in real estate, and it may acquire and dispose of
         real estate or interests in real estate acquired through the exercise
         of its rights as a

                                      -50-
<PAGE>   211
         holder of debt obligations secured by real estate interests therein,
         and the Income and Tax-Exempt Bond Funds may purchase and sell interest
         rate futures and options;

5.       invest in oil, gas or other mineral leases;

6.       invest in securities restricted under federal securities laws other
         than securities eligible for resale pursuant to Rule 144A under the
         Securities Act of 1933, as amended;

7.       invest more than 20%* of its assets in forward commitments;

8.       invest more than 25%* of its assets in any single industry;**

9.       invest more than 15%* of its net assets in illiquid securities;

10.      buy foreign securities not payable in U.S. dollars (not applicable to
         the Income Fund);

11.      buy securities on margin, mortgage or pledge its securities, or engage
         in "short" sales;

12.      invest more than 5%* of its net assets in warrants including not more
         than 2%* of such net assets in warrants that are not listed on either
         the New York Stock Exchange or American Stock Exchange; however,
         warrants acquired in units or attached to securities may be deemed to
         be without value for the purpose of this restriction;

13.      act as underwriter of securities issued by others;

14.      borrow money for investment purposes, although it may borrow up to 5%
         of its total net assets for emergency, non-investment purposes and,
         except for the Tax-Exempt Bond Fund, may enter into transactions in
         which the Fund sells securities for delivery in the current month and
         simultaneously contracts to repurchase substantially similar securities
         on a specified future date;

15.      lend money (except for the execution of repurchase agreements);

16.      buy or sell put or call options;

17.      issue senior securities.

In addition,

THE U.S. GOVERNMENT SECURITIES FUND MAY NOT:

1.       invest less than 80%* of its assets in obligations guaranteed by the
         U.S. Government, its agencies and instrumentalities or in repurchase
         agreements or collateralized mortgage obligations secured by these
         obligations.

THE TAX-EXEMPT BOND FUND MAY NOT:

1.       buy or hold securities which directors or officers of the Fund or the
         Advisor hold more than .50% of the outstanding securities.

THE U.S. GOVERNMENT SECURITIES AND INCOME FUNDS MAY NOT:

1.       invest in other investment companies (except as part of a merger).

THE U.S. GOVERNMENT SECURITIES AND TAX-EXEMPT BOND FUNDS MAY NOT:



                                      -51-
<PAGE>   212
1.       buy common stocks or other equity securities, except that the Tax-
         Exempt Bond Fund may invest in other investment companies.

*  Percentage at the time the investment is made.

** It is a policy of the Income Fund to consider electric utilities, electric
and gas utilities, gas utilities, and telephone utilities to be separate
industries. The Fund also considers foreign issues to be a separate industry. It
is a policy of the Tax-Exempt Bond Fund to apply this restriction only to its
assets in non-municipal bond holdings, pollution control revenue bonds and
industrial development revenue bonds. These policies may result in increased
risk.

THE HIGH YIELD FUND MAY NOT:

1.       invest more than 5% of its total assets in any single issuer other than
         U.S. Government Securities, except that up to 25% of the Fund's assets
         may be invested without regard to this 5% limitation;
2.       acquire more than 10% of the voting securities of any one company;
3.       invest in real estate or commodities;
4.       invest in oil, gas or other mineral leases;
5.       invest more than 25% or more of its assets in any single industry;*
6.       buy securities on margin, mortgage or pledge its securities;
7.       act as underwriter of securities issued by others;
8.       borrow money for investment purposes (it may borrow up to 5% of its
         total assets for emergency, non-investment purposes);
9.       lend money (except for the execution of repurchase agreements);
10.      issues senior securities.

*  Percentage at the time the investment is made.

EACH OF THE BOND & STOCK, GROWTH & INCOME AND NORTHWEST FUNDS MAY NOT:

1.       invest more than 5%* of its total assets in securities of any single
         issuer other than U.S. Government Securities, except that up to 25% of
         a Fund's assets may be invested without regard to this 5% limitation;
2.       acquire more than 10%* of the voting securities of any one company;
3.       invest in any company for the purpose of management or exercising
         control;
4.       invest in real estate (except publicly traded real estate investment
         trusts);
5.       invest in commodities;
6.       invest in oil, gas or other mineral leases;
7.       invest in other investment companies (except as part of a merger);
8.       invest more than 20%* of its total assets in forward commitments or
         repurchase agreements;

                                      -52-
<PAGE>   213
9.       invest more than 25%* of its total assets in any single industry;
10.      act as underwriter of securities issued by others;
11.      borrow money for investment purposes (it may borrow up to 5% of its
         total net assets for emergency, non-investment purposes);
12.      lend money (except for the execution of repurchase agreements);
13.      issue senior securities;
14.      buy or sell options, with the exception of covered call options which
         must be limited to 20% of total assets;
15.      buy or sell futures-related securities;
16.      invest in securities restricted under federal securities laws (other
         than securities eligible for resale under Rule 144A under the
         Securities Act of 1933, as amended);
17.      invest more than 15%* of its net assets in illiquid securities;
18.      buy securities on margin, mortgage or pledge its securities, or engage
         in "short" sales;
19.      invest more than 5%* of its net assets in warrants including not more
         than 2% of such net assets in warrants that are not listed on either
         New York Stock Exchange or American Stock Exchange; however, warrants
         acquired in units or attached to securities may be deemed to be without
         value for the purpose of this restriction;
20.      invest more than 25%* of its total assets in foreign securities and
         then only in U.S. dollar-denominated foreign securities.

*     Percentage at the time the investment is made.

THE INVESTMENT RESTRICTIONS SET FORTH BELOW HAVE BEEN ADOPTED BY
THE WM STRATEGIC ASSET MANAGEMENT PORTFOLIOS WITH RESPECT TO THE
PORTFOLIOS AS FUNDAMENTAL POLICIES.

EACH OF THE STRATEGIC GROWTH, CONSERVATIVE GROWTH, BALANCED,
FLEXIBLE INCOME AND INCOME PORTFOLIOS WILL NOT

1.       purchase or sell physical commodities unless acquired as a result of
         ownership of securities or other instruments (except this shall not
         prevent the Fund from purchasing or selling options or futures
         contracts or from investing in securities or other instruments backed
         by physical commodities);
2.       purchase or sell real estate including limited partnership interests,
         although it may purchase and sell securities of companies that deal in
         real estate and may purchase and sell securities that are secured by
         interests in real estate;
3.       make loans to any person, except loans of portfolio securities to the
         extent that no more than 33 1/3% of its total assets would be lent to
         other parties, but this limitation does not apply to purchases of debt
         securities or repurchase agreements;
4.       (i) purchase more than 10% of any class of the outstanding voting
         securities of any issuer (except other investment companies as defined
         in the 1940 Act) and (ii) purchase securities of an issuer (except
         obligations of the U.S. Government and its agencies and
         instrumentalities and securities of other investment companies as
         defined in the 1940 Act)

                                      -53-
<PAGE>   214
         if as a result, with respect to 75% of its total assets, more than 5%
         of the Portfolio's total assets, at market value, would be invested in
         the securities of such issuer.
5.       issue senior securities (as defined in the 1940 Act) except as
         permitted by rule, regulation or order of the Securities and Exchange
         Commission;
6.       will not borrow, except from banks for temporary or emergency (not
         leveraging) purposes including the meeting of redemption requests that
         might otherwise require the untimely disposition of securities in an
         aggregate amount not exceeding 30% of the value of the Portfolio's
         total assets (including the amount borrowed) at the time the borrowing
         is made; and whenever borrowings by a Portfolio, including reverse
         repurchase agreements, exceed 5% of the value of a Portfolio's total
         assets, the Portfolio will not purchase any securities;
7.       underwrite securities issued by others, except to the extent that the
         Portfolio may be considered an underwriter within the meaning of the
         1933 Act in the disposition of restricted securities; and
8.       write or acquire options or interests in oil, gas or other mineral
         exploration or development programs.

                               PORTFOLIO TURNOVER

         The Money Funds attempt to increase yields by trading to take advantage
of short-term market variations, which result in high portfolio turnover and
high transactions costs. The Short Term High Quality Bond, Target Maturity 2002,
U.S. Government Securities, Income and High Yield Funds, the Tax-Exempt Bond,
California Municipal, California Insured Intermediate Municipal and Florida
Insured Municipal Funds and the Bond & Stock, Growth & Income, Growth,
International Growth, Northwest and Emerging Growth Funds do not intend to seek
profits through short-term trading. Nevertheless, the Funds will not consider
portfolio turnover rate a limiting factor in making investment decisions.

         Under certain market conditions, the Short Term High Quality Bond,
California Insured Intermediate Municipal, Growth, International Growth or
Emerging Growth Funds may experience increased portfolio turnover as a result of
such Fund's options activities. For instance, the exercise of a substantial
number of options written by a Fund (due to appreciation of the underlying
security in the case of call options or depreciation of the underlying security
in the case of put options) could result in a turnover rate in excess of 100%. A
portfolio turnover rate of 100% would occur if all of a Fund's securities that
are included in the computation of turnover were replaced once during a period
of one year. The portfolio turnover rate is calculated by dividing the lesser of
purchases or sales of portfolio securities for the year by the monthly average
value of portfolio securities. Securities with remaining maturities of one year
or less at the date of acquisition are excluded from the calculation. In
addition, the Northwest Fund experienced a significant increase in its portfolio
turnover rate for the fiscal year ended 10/31/97, when the Fund's portfolio
turnover rate increased to 42% versus the 9% it experienced for the fiscal year
ended 10/31/96.

                                      -54-
<PAGE>   215
         Certain other practices that may be employed by the Funds could result
in high portfolio turnover. For example, portfolio securities may be sold in
anticipation of a rise in interest rates (market decline) or purchased in
anticipation of a decline in interest rates (market rise) and later sold. In
addition, a security may be sold and another of comparable quality purchased at
approximately the same time to take advantage of what the Advisor or a Fund's
sub-advisor believes to be a temporary disparity in the normal yield
relationship between the two securities. These yield disparities may occur for
reasons not directly related to the investment quality of particular issues or
the general movement of interest rates, such as changes in the overall demand
for, or supply of, various types of securities.

   
                             PORTFOLIO TRANSACTIONS
    

         Most of the purchases and sales of securities for a Fund, whether
transacted on a securities exchange or over-the-counter, will be effected in the
primary trading market for the securities. Decisions to buy and sell securities
for a Fund are made by the Advisor or the relevant sub-advisor, which also is
responsible for placing these transactions, subject to the overall review of the
Trusts' Board of Trustees. Although investment decisions for each Fund are made
independently from those of the other accounts managed by the Advisor or the
sub-advisor, investments of the type the Fund may make may also be made by those
other accounts. When a Fund and one or more other accounts managed by the
Advisor or the sub-advisor are prepared to invest in, or desire to dispose of,
the same security, available investments or opportunities for sales will be
allocated in a manner believed by the Advisor or the sub-advisor to be equitable
to each. In some cases, this procedure may adversely affect the price paid or
received by a Fund or the size of the position obtained or disposed of by the
Fund. In other cases, however, it is believed that coordination and the ability
to participate in volume transactions will be to the benefit of the Fund.

         Transactions on U.S. exchanges involve the payment of negotiated
brokerage commissions. With respect to exchanges on which commissions are
negotiated, the cost of transactions may vary among different brokers. There is
generally no stated commission in the case of securities traded in the
over-the-counter markets, but the prices of those securities include undisclosed
commissions or concessions, and the prices at which securities are purchased
from and sold to dealers include a dealer's mark-up or mark-down. U.S.
Government Securities may be purchased directly from the U.S. Treasury or from
the issuing agency or instrumentality.

         In selecting brokers or dealers to execute portfolio transactions on
behalf of a Fund, the Advisor or the Fund's sub-advisor seeks the best overall
terms available. In assessing the best overall terms available for any
transaction, the Advisor and each sub-advisor will consider the factors that the
Advisor or the sub-advisor deems relevant, including the breadth of the market
in the security, the price of the security, the financial condition and
execution capability of the broker or dealer and the reasonableness of the
commission, if any, for the specific transaction and on a continuing basis. In
addition, each advisory agreement among the Trusts authorizes the Advisor, and a
sub-advisory agreement authorizes the sub-advisor, in selecting brokers or
dealers to execute

                                      -55-
<PAGE>   216
a particular transaction and in evaluating the best overall terms available, to
consider the brokerage and research services (as those terms are defined in
Section 28(e) of the Securities Exchange Act of 1934, as amended) provided to
the Trusts, the other Funds and/or other accounts over which the Advisor, the
sub-advisor or their affiliates exercise investment discretion. The fees under
the advisory agreements between the Trusts, the Advisor and the sub-advisors are
not reduced by reason of their receiving such brokerage and research services.
The Trusts' Board of Trustees will periodically review the commissions paid by
the Funds to determine if the commissions paid over representative periods of
time were reasonable in relation to the benefits received by the Trusts.

         Consistent with applicable provisions of the 1940 Act, the rules and
exemptions adopted by the Commission thereunder, and relevant interpretive and
"no-action" positions taken by the Commission's staff, the Trusts' Board of
Trustees has adopted procedures pursuant to Rule 17e-1 under the 1940 Act to
ensure that all portfolio transactions with affiliates will be fair and
reasonable. Under the procedures adopted, portfolio transactions for a Fund may
be executed through any affiliated broker (other than affiliated persons of the
Trust solely because the broker is an affiliated person of a sub-advisor of
another Fund) if, subject to other conditions in the Rule 17e- 1 procedures, in
the judgment of the Advisor or the Fund's sub-advisor, the use of an affiliated
broker is likely to result in price and execution at least as favorable as those
of other qualified broker-dealers, and if, in the transaction an affiliated
broker charges the Fund a rate consistent with those charged for comparable
transactions in comparable accounts of the broker's most favored unaffiliated
clients. Over-the-counter purchases and sales are transacted directly with
principal market makers except in those cases in which better prices and
executions may be obtained elsewhere.

         For the years set forth below, the WM Trust I and WM Trust II Funds
paid the following brokerage commissions:

                        TOTAL BROKERAGE COMMISSIONS PAID

   
<TABLE>
<CAPTION>
                                                Oct.      June
Fund                                            1998      1998           1997          1996          1995
- ----                                            ----      ----           ----          ----          ----
<S>                                          <C>       <C>        <C>            <C>           <C>
Money Market Fund*                                        n/a     $       0      $       0     $       0
Tax-Exempt Money Market Fund*                             n/a             0              0         7,320
California Money Fund***                                   $0             0              0       757,574
Short Term High Quality Bond Fund***                    3,616         6,064         20,378             0
Target Maturity 2002 Fund***                                0             0              0             0
U.S. Government Securities Fund*                          n/a             0              0             0
Income Fund*                                              n/a             0              0             0
Tax-Exempt Bond Fund*                                     n/a             0              0             0
California Municipal Fund***                                0             0         20,982             0
California Insured Intermediate Municipal               4,277         7,102              0             0
Florida Insured Municipal Fund***                       1,905         7,935              0             0
Bond & Stock Fund**                                       n/a       307,372        199,663             0
</TABLE>
    



                                      -56-
<PAGE>   217
<TABLE>
<S>                                                  <C>            <C>           <C>           <C>
Growth & Income Fund**                                    n/a       502,372        292,486       635,228
Northwest Fund**                                          n/a        98,599        123,164       583,298
Growth Fund***                                        208,497       616,898        723,100             0
Emerging Growth Fund***                               387,993       480,975        849,149             0
International Growth Fund***                        1,036,609       696,191        860,863             0
</TABLE>



   
*        Fiscal year changed from 12/31 to 10/31.
    
   
**       Fiscal year ended 10/31.
    
   
***      Fiscal year changed from 6/30 to 10/31.
    

   
<TABLE>
<CAPTION>
                                                                                   Total Amount of
                                                      Total Brokerage             Transactions Where
                                                      Commissions Paid          Brokerage Commissions
                                                       to Brokers That           Were Paid to Brokers
                                                     Provided Research              That Provided
                                                     Fiscal Year ended           Research Fiscal Year
Fund                                                     10/31/98                   ended 10/31/98
<S>                                                  <C>                          <C>
Money Market Fund*                                      $                            $           
Tax-Exempt Money Market Fund*                                                                    
California Money Fund**                                                                          
Short Term High Quality Bond Fund**                                                              
Target Maturity 2002 Fund**                                                                      
U.S. Government Securities Fund*                                                                 
Income Fund*                                                                                     
Tax-Exempt Bond Fund*                                                                            
California Municipal Fund**                                                                      
California Insured Intermediate Municipal**                                                      
Florida Insured Municipal Fund**                                                                 
Bond & Stock Fund                                                                                
Growth & Income Fund                                                                             
Northwest Fund*                                                                                  
Growth Fund**                                                                                    
Emerging Growth Fund**                                                                           
International Growth Fund**                                                                      
</TABLE>
    

   
*        Fiscal year changed from 12/31 to 10/31.
    
   
**       Fiscal year changed from 6/30 to 10/31.
    

    WM Trust I, WM Trust II and WM Strategic Asset Management Portfolios are
required to identify any securities of their "regular brokers or dealers" (as
such term is defined in the 1940 Act) which they have acquired during their most
recent fiscal years. As of December 30, 1998, [none of the Funds held any
securities of any "regular broker or dealer" of the Trusts or Portfolios.]

                                      -57-
<PAGE>   218
                                 NET ASSET VALUE

    The Trusts will calculate the net asset value of the Funds' Class A, Class
B, Class I and Class S shares as of the close of regular trading on the New York
Stock Exchange (currently 4:00 p.m., New York time), Monday through Friday,
exclusive of national business holidays. The Trusts will be closed on the
following national holidays: New Year's Day, Martin Luther King Day, President's
Day, Good Friday, Memorial Day, Independence Day, Labor Day, Thanksgiving and
Christmas.

    A security that is primarily traded on a U.S. exchange (including securities
traded through the NASDAQ National Market System) is valued at the last sale
price on that exchange or, if there were no sales during the day, at the mean of
the current day's bid and asked prices. Over-the-counter securities that are not
traded through the NASDAQ National Market System and U.S. Government Securities
are valued at the mean of the current day's bid and asked prices. An option is
generally valued at the last sale price or, in the absence of a last sale price,
at the mean of the current day's bid and asked prices. Short term debt
securities that mature in 60 days or less are valued at amortized cost; assets
of the Money Funds are also valued at amortized cost. The value of a foreign
security is determined in its national currency as of the close of trading on
the foreign exchange on which it is traded or as of 4:00 p.m. New York Time, if
that is earlier, and that value is then converted into its U.S. dollar
equivalent at the foreign exchange rate in effect at noon, New York time, on the
day the value of the foreign security is determined. The value of a futures
contract equals the unrealized gain or loss on the contract, which is determined
by marking the contract to the current settlement price for a like contract
acquired on the day on which the futures contract is being valued. If the market
makes a limit move with respect to the security or index underlying the futures
contract, the futures contract will be valued at a fair market value as
determined by or under the direction of the Board of Trustees.

    Debt securities of U.S. issuers (other than U.S. Government Securities and
short-term investments), including Municipal Obligations, are valued by one or
more independent pricing services (each a "Pricing Service") retained by the
Trusts. When, in the judgment of a Pricing Service, market quotations for these
securities are readily available, they are valued at the mean between the quoted
bid prices and asked prices. Securities for which market quotations are not
readily available are valued at fair value as determined by, or under the
direction of, the Board of Trustees, which may rely on the assistance of one or
more Pricing Services. The procedures of each Pricing Service are reviewed
periodically by the officers of the Trusts under the general supervision and
responsibility of the Board of Trustees.

    VALUATION OF THE MONEY FUNDS. The valuation of the portfolio securities of
the Money Funds is based upon their amortized cost, which does not take into
account unrealized capital gains or losses. Amortized cost valuation involves
initially valuing an instrument at its cost and thereafter assuming a constant
amortization to maturity of any discount or premium, regardless of the impact of
fluctuating interest rates on the market value of the instrument.

                                      -58-
<PAGE>   219
While this method provides certainty in valuation, it may result in periods
during which value, as determined by amortized cost, is higher or lower than the
price a Fund would receive if it sold the instrument.

    The use by the Money Funds of the amortized cost method of valuing their
respective portfolio securities is permitted by a rule adopted by the SEC. Under
this rule, the Money Funds must maintain dollar-weighted average portfolio
maturities of 90 days or less, purchase only instruments having remaining
maturities of thirteen months or less and invest only in securities determined
by the Board of Trustees of the Trusts to present minimal credit risks. Pursuant
to the rule, the Board of Trustees also has established procedures designed to
stabilize, to the extent reasonably possible, the Funds' price per share as
computed for the purpose of sales and redemptions at $1.00. Such procedures
include review of the Funds' portfolio holdings by the Board of Trustees or its
delegate, at such intervals as the Board of Trustees may deem appropriate, to
determine whether the Funds' net asset values calculated by using available
market quotations or market equivalents deviates from $1.00 per share based on
amortized cost.

    In the event the Board of Trustees determines that a deviation exists which
may result in material dilution or other unfair results to investors or existing
shareholders, the Board of Trustees will cause the Trusts to take such
corrective action as the Board deems necessary and appropriate including:
selling portfolio instruments prior to maturity to realize capital gains or
losses or to shorten average portfolio maturity; withholding dividends or paying
distributions from capital or capital gains; redeeming shares in kind; or
establishing a net asset value per share by using available market quotations.

                          HOW TO BUY AND REDEEM SHARES

    Class A, Class B, Class I and Class S shares of the Funds may be purchased
and redeemed in the manner described in the Prospectus and in this SAI. Class I
shares are currently offered and sold only to the Portfolios.

COMPUTATION OF PUBLIC OFFERING PRICES

    The Funds offer their shares to the public on a continuous basis. The public
offering price per Class A share of the Funds is equal to the net asset value
next computed after receipt of a purchase order, plus the applicable front-end
sales charge, if any, as set forth in the Prospectus. The public offering price
per Class B, Class I or Class S share of the Funds is equal to the net asset
value next computed after receipt of a purchase order.

    An illustration of the computation of the public offering price per share of
each Fund and Portfolio is contained in the financial statements incorporated
herein by reference.

                                      -59-
<PAGE>   220
COMMISSIONS ON NAV SALES. The Distributor pays authorized dealers commissions of
up to 1% on purchases of Class A shares at net asset value that are (i) part of
a purchase of $1 million or more or (ii) sold to qualified employee benefit
plans (including SEPs and SIMPLEs) that have more than 100 participants or that
have more than $500,000 invested in the WM Group of Funds.

REDEMPTIONS

    The procedures for redemption of Class A, Class B and Class S shares of each
Fund and Portfolio are summarized in the Prospectus under "How to Sell Shares."
The right of redemption of Class A, Class B and Class S shares of a Fund and
Class A and Class B of a Portfolio may be suspended or the date of payment
postponed (1) for any periods during which the New York Stock Exchange is closed
(other than for customary weekend and holiday closings), (2) when trading in the
markets the Fund normally utilizes is restricted, or an emergency, as defined by
the rules and regulations of the SEC, exists making disposal of a Fund's or
Portfolio's investments or determination of its net asset value not reasonably
practicable or (3) for such other periods as the SEC by order may permit for
protection of shareholders.

    CERTAIN WAIVERS OF THE CONTINGENT DEFERRED SALES CHARGES. Contingent
deferred sales charges (each, a "CDSC") imposed upon redemptions of Class A,
Class B and Class S shares will be waived in certain instances.

    APPLICATION OF CLASS A SHARES CDSC. The Class A CDSC of 1.0% or 0.5% may be
imposed on certain redemptions within one or two years of purchase,
respectively, with respect to Class A shares (i) purchased at NAV without a
sales charge at time of purchase due to purchases of $1 million or more, or (ii)
acquired, including Class A shares of a Money Fund acquired, through an exchange
for Class A shares of a Non-Money Fund purchased at NAV without a sales charge
at time of purchase due to purchases of $1 million or more. The CDSCs for Class
A shares are calculated on the lower of the shares' cost or current net asset
value, and in determining whether the CDSC is payable, the Funds will first
redeem shares not subject to any CDSC.

    With respect to certain investors who purchase Class A shares through an
authorized dealer and who receive a waiver of the entire initial sales charge on
Class A shares because the Class A shares where purchased through a plan
qualified under Section 401(k) of the Code ("401(k) Plan") or through a plan
qualified under Section 403(b) of the Code ("403(b) Plan") or who hold Class A
shares of a Money Fund that were acquired through an exchange for Non-Money Fund
Class A shares that were purchased at NAV through one of such plans, a CDSC of
1% may be imposed on the amount that was invested through the plan in such Class
A shares and that is redeemed (i) if, within the first two years after the
plan's initial investment in the Funds, the named fiduciary of the plan
withdraws the plan from investing in the Funds in a manner that causes all
shares held by the plan's participants to be redeemed; or (ii) by a plan

                                      -60-
<PAGE>   221
participant in a 403(b) Plan within two years of the plan participant's purchase
of such Class A shares. This CDSC will be waived on redemptions in connection
with certain involuntary distributions, including distributions arising out of
the death or disability of a shareholder (including one who owns the shares as
joint tenant). See "How to Buy and Redeem Shares" in the SAI.

    WAIVERS OF CLASS A SHARES CDSC. The Class A CDSC is waived for redemptions
of Class A shares (i) that are part of exchanges for Class A shares of other
Funds; (ii) for distributions to pay benefits to participants from a retirement
plan qualified under Section 401(a) or 401(k) of the Code, including
distributions due to the death or disability of the participant (including one
who owns the shares as a joint tenant); (iii) for distributions from a 403(b)
Plan or an IRA due to death, disability, or attainment of age 70 1/2, including
certain involuntary distributions; (iv) for tax-free returns of excess
contributions to an IRA; (v) for distributions by other employee benefit plans
to pay benefits; (vi) in connection with certain involuntary distributions;
(vii) for systematic withdrawals in amounts of 1% or less per month; and (viii)
by a 401(k) Plan participant so long as the shares were purchased through the
401(k) Plan and the 401(k) Plan continues in effect with investments in Class A
shares of the Fund. See "How to Buy and Redeem Shares" in the SAI.

    For purposes of the waivers described in such section of the Prospectus, a
person will be deemed "disabled" only if the person is unable to engage in any
substantial gainful activity by reason of any medically determinable physical or
mental impairment which can be expected to result in death or be of
long-continued and indefinite duration.

    DEFERRED SALES CHARGE ALTERNATIVE: CLASS B AND CLASS S SHARES. If you choose
the deferred sales charge alternative, you will purchase Class B shares at their
NAV per share without the imposition of a sales charge at the time of purchase.
Class B shares of the Short Term High Quality Bond Fund that are redeemed within
four years of purchase, and Class B shares of the remaining Funds and Portfolios
that are redeemed within five years of purchase, however, will be subject to a
CDSC as described below. CDSC payments and distribution fees on Class B shares
may be used to fund commissions payable to Authorized Dealers.

   
No charge will be imposed with respect to shares having a value equal to any net
increase in the value of shares purchased during the preceding four or five
years and shares acquired by reinvestment of net investment income and capital
gain distributions. The amount of the charge is determined as a percentage of
the lesser of (1) the NAV of the shares at the time of purchase or (2) the NAV
of the shares at the time of redemption. The percentage used to calculate the
CDSC will depend on the number of years since you invested the dollar amount
being redeemed, according to the following tables:
    

                                      -61-
<PAGE>   222
   
<TABLE>
<CAPTION>

                                            Class B shares of all Funds of WM
Class B shares of all Funds (except for     Trust II (except for the Short Term         Class B shares of all Funds of WM Trust I
the Short Term High Quality Bond            High Quality Bond Fund), Portfolios         purchased before March 20, 1998 (1) and the
Fund), Portfolios and Class S shares        and Class S shares of all Funds             Short Term High Quality Bond Fund.
of all Funds purchased after March 20,      purchased before March 20, 1998, and
1998 (other than shares of the Funds        shares of the Funds received
received in connection with the merger      in connection with the merger of other 
of other mutual funds into certain Funds).  mutual funds into certain Funds).

                                                                                    
        Year of             Contingent                Year of             Contingent           Year of
      Redemption             Deferred                Redemption            Deferred           Redemption             Contingent
    After Purchase            Sales                After Purchase           Sales           After Purchase         Deferred Sales
    --------------            -----                --------------           ------          --------------         --------------
<S>                          <C>           <C>                            <C>           <C>                        <C>
First.................         5.00%          First.................        5.00%       First                          4.00%

Second................         4.00%          Second................        4.00%       Second                         3.00%

Third.................         3.00%          Third.................        3.00%       Third                          2.00%

Fourth................         2.00%          Fourth................        3.00%       Fourth                         1.00%

Fifth.................         1.00%          Fifth.................        2.00%       Fifth and following               0%
Sixth and following            0.00%          Sixth.................        1.00%
                                              Seventh and following         0.00%
</TABLE>
    


   
     For these purposes, all purchases are considered made on the last day of
the month of purchase. To determine the CDSC payable on a redemption of Class B
shares, a Fund will first redeem Class B shares
    

- --------

   
         (1) Class B shares of the U.S. Government Securities, Income and
Tax-Exempt Bond Funds purchased prior to March 15, 1996, and Class B shares of
the Growth & Income, Bond & Stock and Northwest Funds purchased prior to January
15, 1996, are subject to a contingent deferred sales charge of 3% if redeemed
the first or second year after purchase, 2% in the third or fourth year, 1% in
the fifth year, and 0% in year six.
    

                                      -62-
<PAGE>   223
not subject to a CDSC. Thereafter, to determine the applicability and rate of
any CDSC, it will be assumed that shares representing the reinvestment of
dividends and capital gain distributions are redeemed first and shares held for
the longest period of time are redeemed next. Using this method, your sales
charge, if any, will be at the lowest possible CDSC rate.

   
    The Trusts will adopt procedures to convert Class B shares, without payment
of any sales charges, into Class A shares, which have lower distribution fees,
after the passage of a number of years after purchase. Such conversion may occur
in approximately eight years. Those shares of the former Griffin Funds purchased
prior to the merger with the WM Group of Funds may convert in approximately six
years.
    

   
    The conversion of Class B shares to Class A shares is subject to a favorable
ruling from the Internal Revenue Service or a determination by the Board of 
Trustees, after consultation with legal counsel that such conversion will not 
be subject to federal income taxes. There cannot be any assurance that a ruling 
or determination will be available. If they should not be available, the 
conversion of Class B shares to Class A shares would not occur and those shares 
would continue to be subject to higher expenses than Class A shares for an 
indefinite period.
    

   
    WAIVERS OF CLASS B CDSCS. For each of the WM Trust II Funds purchased prior
to March 20, 1998, no CDSCS will be assessed on redemptions of Class B shares in
the case of systematic withdrawals in amounts of 1% or less per month; death of
the shareholder; and redemptions in connection with certain involuntary
distributions, including distributions arising out of the death or disability of
a shareholder or attainment of age 70 1/2, from IRAs. The foregoing waivers may
be changed at any time. For waivers with respect to each of the other Funds and
Portfolios, or for shares of the WM Trust II Funds purchased on or after March
20, 1998, see the Prospectus.
    

    DISTRIBUTIONS IN KIND. If the Board of Trustees determines that it would be
detrimental to the best interests of the remaining shareholders of a Fund to
make a redemption payment wholly in cash, the Trusts may pay, in accordance with
SEC rules, any portion of a redemption in excess of the lesser of $250,000 or 1%
of the Fund's net assets by distribution in kind of portfolio securities in lieu
of cash. Securities issued in a distribution in kind will be readily marketable,
although shareholders receiving distributions in kind may incur brokerage
commissions when subsequently redeeming shares of those securities.

    SYSTEMATIC WITHDRAWAL PLAN. As described in the Prospectus, a Systematic
Withdrawal Plan may be established by a shareholder who owns either Class A or
Class B shares of a Fund with a value exceeding $5,000 and who wishes to receive
specific amounts of cash periodically. Monthly, quarterly, semiannual or annual
withdrawals in a minimum amount of $100 may be made under the Systematic
Withdrawal Plan by redeeming as many shares of the Fund or Portfolio as may be
necessary to cover the stipulated withdrawal payment. The CDSC on Class B shares
is waived for withdrawals under a Systematic Withdrawal Plan that meets certain
conditions as described in "Buying Class B [or Class S] shares - Contingent
deferred sales charge" in the Prospectus. To the extent that withdrawals exceed
dividends, distributions and appreciation of a shareholder's investment in a
Fund or Portfolio, there will be a reduction in the value of the shareholder's
investment in the relevant class of the Fund or Portfolio and continued
withdrawal payments may reduce the shareholder's investment and ultimately
exhaust it. Withdrawal payments should not be considered as income from
investment in a Fund or Portfolio. For additional information regarding the
Systematic

                                      -63-
<PAGE>   224
Withdrawal Plan, write to the WM Group of Funds at Suite 300, 1201 Third Avenue,
Suite 1400, Seattle, Washington 98101 or call the Trust at 800-222-5852.

    CHECK REDEMPTION PRIVILEGE. Checkwriting is available for the Class A shares
of the Money Funds only. Checks to redeem shares of any of the Money Funds are
drawn on the account of the Fund at Boston Safe and shareholders will be subject
to the same rules and regulations that Boston Safe applies to checking accounts
and, will have the same rights and duties with respect to stop payment orders,
"stale" checks, and unauthorized endorsements as bank checking account customers
do under Massachusetts Uniform Commercial Code. All notices with regard to those
rights and duties must be given to Boston Safe.

HOW TO EXCHANGE SHARES

    You may exchange shares of any of the Funds or Portfolios for shares of the
same class of any other of the Funds or Portfolios. Exchanges of shares are
sales and may result in a gain or loss for income tax purposes.

    Exchanges are made at the relative NAVs of the shares being exchanged. No
additional sales charge will be incurred when exchanging shares from a Fund
which imposes an initial or contingent deferred sales charge. Any contingent
deferred sales charge on the subsequent sale of shares acquired by exchange will
be based on the contingent deferred sales charge schedule of the Fund originally
purchased. Shares exchanged from Money Fund will be subject to the acquired
Fund's sales charge unless the shares given in exchange were previously
exchanged from a Fund that imposes an initial or contingent deferred sales
charge.

    All exchanges are subject to the minimum investment requirements of the Fund
being acquired and to its availability for sale in your state of residence. You
may arrange for automatic monthly exchanges. The Funds or Portfolios reserve the
right to refuse any order for the purchase of shares, including those by
exchange. In particular, a pattern of exchanges that coincides with a "market
timing" strategy may be disruptive to a Fund or Portfolios and, consequently,
may be disallowed.
   

                            PERFORMANCE INFORMATION

YIELD

MONEY FUNDS. From time to time, advertisements or shareholder reports concerning
the Money Funds may describe yield and effective yield. The yield of a Money
Fund refers to the income generated by an investment in the Fund over a 7-day
period identified in the advertisement. This income is then "annualized." That
is, the amount of income generated by the investment during that week is assumed
to be generated each week over a 52-week period and is shown as a percentage of
the investment. Effective yield is calculated similarly but, when annualized,
the income earned by an investment in a Fund is assumed to be reinvested.
Effective yield will generally be slightly higher than the yield because of the
compounding effect of this assumed reinvestment.

FIXED-INCOME AND MUNICIPAL FUNDS. From time to time, the Fixed-Income and 
Municipal Funds may advertise 30-day yield. The 30-day yield of each of these 
Funds refers to the income generated by an investment in such Fund over the 
30-day period identified in the advertisement, and is computed by dividing the 
net investment income per share earned by the Fund during the period by the 
maximum public offering price per share on the last day of the 30-day period. 
This income is "annualized" by assuming that the amount of income is generated 
each month over a one-year period and is compounded semiannually. The 
annualized income is then shown as a percentage of the maximum public offering 
price. In addition, these Funds may advertise a similar 30-day yield computed 
in the same manner except that the NAV per share is used in place of the public 
offering price per share.

TAX-EQUIVALENT YIELD. The Municipal Funds, the California Money Fund and the 
Tax-Exempt Money Market Fund may also quote tax-equivalent yield. 
Tax-equivalent yield shows the taxable yields an investor would have to earn 
before taxes to equal the Fund's tax-free yield. A tax-equivalent yield is 
calculated by dividing a Fund's tax-exempt yield by the result of one minus the 
sum of a stated federal and applicable state tax rate, based upon the highest 
marginal tax rate and adjusted for the federal deduction of state taxes paid. 
To the extent that a particular investor is not subject to the highest marginal 
tax rate, the tax-equivalent yield experienced by the investor will be lower 
than the tax-equivalent yield quoted by the Fund. If only a portion of a Fund's 
income is tax-exempt, only that portion is adjusted in the calculation.

TOTAL RETURN

From time to time, a Fund may advertise its average annual total return over
various periods. Such total return figures reflect a deduction for any front end
sales charge or contingent deferred sales charge and show the average percentage
change in value of an investment in the Fund from the beginning date of the
measuring period. These figures reflect changes in the price of the Fund's
shares and assume that any income dividends and/or capital gains distributions
made by the Fund during the period were reinvested. Figures will be given for
recent one-, five- and ten-year periods (or from commencement of the Fund's
operations) and may be given for other periods.

ADDITIONAL PERFORMANCE QUOTATIONS.

Advertisements of total return may also show total return without giving effect 
to sales charges. Similarly, a Fund may provide yield quotations in investor 
communications based on the Fund's NAV (rather than its public offering price) 
on the last day of the period covered by the yield computation. Because these 
additional quotations will not reflect the maximum sales charge payable, such 
performance quotations will be higher than the performance quotations that 
include the maximum sales charge.

TOTAL RETURNS AND YIELDS ARE BASED ON PAST RESULTS AND ARE NOT A PREDICTION OF 
FUTURE PERFORMANCE.

Performance information is computed separately for each class of shares. Because
Class B shares bear the  expense of the higher distribution and service fees, 
it is expected that performance for such shares will be lower than that for a 
Fund's Class A shares.

OBTAINING PERFORMANCE INFORMATION

Each Fund's strategies, performance, and holdings are detailed twice a year in 
Fund reports, which are sent to all shareholders. The SAI describes the methods 
used to determine a Fund's performance. Shareholders may call 800-222-5852 for 
performance information.

    

                          DETERMINATION OF PERFORMANCE

    From time to time, the Trusts may quote the performance of a Fund's or
Portfolio's Class A, Class B and Class S shares in terms of yield, actual
distributions, total return or capital appreciation in reports or other
communications to shareholders or in advertising material. The yield for the
Class A, Class B and Class S shares of the Money Funds is computed by: (1)
determining the net change, exclusive of capital changes, in the value of a
hypothetical pre-existing account in each Fund having a balance of one share at
the beginning of a seven calendar day period for which yield is to be quoted,
(2) subtracting a hypothetical change reflecting deductions from shareholder
accounts, (3) dividing the net change by the value of the

                                      -64-
<PAGE>   225
account at the beginning of the period to obtain the base period return, and (4)
annualizing the results (i.e., multiplying the base period return by 365/7). The
net change in the value of the account reflects the value of additional shares
purchased with dividends declared on the original share and any such additional
shares, but does not include realized gains and losses or unrealized
appreciation or depreciation. In addition, the Money Funds may calculate a
compounded effective annualized yield by adding 1 to the base period return
(calculated as described above), raising the sum to a power equal to 365/7 and
subtracting 1.

    The current yield for the Money Funds and the Target Maturity 2002 Fund may
be obtained by calling 800-222-5852. For the seven-day period ended June 30,
1998, the yield for the outstanding shares of the California Money Fund that are
treated as Class A shares was 2.51% and the effective yield of such shares of
that Fund for the same period was 2.54%. The California Money and Tax-Exempt
Money Market Funds may also calculate their tax equivalent yields as described
below.

    The Municipal Funds and Fixed-Income Funds may quote a 30-day yield figure
(the "SEC Yield") which is calculated according to a formula prescribed by the
SEC. The formula can be expressed as follows:
                                                (6)
                     YIELD    =       [(a-b + 1)    -  1]
                                   2  -----------------------
                                              cd

Where:            a = dividends and interest earned during the period.
                  b = expenses accrued for the period (net of reimbursement).
                  c = the average daily number of shares outstanding during the
                      period that were entitled to receive dividends.
                  d = the maximum offering price per share on the last day of
                      the period.

    For the purpose of determining the interest earned (variable "a" in the
formula) on debt obligations that were purchased by one of the Municipal and
Fixed-Income Funds at a discount or premium, the formula generally calls for
amortization of the discount or premium; the amortization schedule will be
adjusted monthly to reflect changes in the market values of the debt
obligations.

   
    Based on the foregoing calculation, the SEC Yields relating to the
outstanding shares treated as Class A shares for the 30-day period ended
10/31/98 are as follows:
    

   
<TABLE>
<CAPTION>
                   Fund                                                  Yield
                   ----                                                  -----
<S>                                                                     <C>
Short Term High Quality Bond Fund..................................
Target Maturity 2002 Fund..........................................
U.S. Government Securities Fund....................................
Income Fund........................................................
</TABLE>
    


                                      -65-
<PAGE>   226
   
High Yield Fund....................................................
Tax-Exempt Bond Fund...............................................
California Municipal Fund..........................................
California Insured Intermediate Municipal Fund.....................
Florida Insured Municipal Fund.....................................
Income Portfolio...................................................
Flexible Income Portfolio..........................................
Balanced Portfolio.................................................
    

   
    In addition, the Fund or Portfolio may quote a 30-day yield based on actual
distributions during a 30-day period that is computed by dividing the net
investment income per share earned by the Fund or Portfolio during the period by
the maximum Public Offering Price per share on the last day of the 30-day
period. This income is "annualized" by assuming that the amount of income is
generated each month over a one-year period and is compounded semiannually. The
annualized income is then shown as a percentage of the maximum Public Offering
Price. In addition, the Municipal Funds, the Fixed-Income Funds and the Income,
Flexible Income and Balanced Portfolios may advertise a similar 30-day yield
computed in the same manner except that the NAV per share is used in place of
the Public Offering Price per share. These 30-day average yields for the period
ended October 31, 1998 for the Class A shares of the Tax-Exempt Bond, California
Municipal, California Insured Intermediate Municipal and Florida Insured
Municipal Funds and the Income, Flexible Income and Balanced Portfolios were
___%,___%, ___%, ___%, ___%, ___%, and ___%, respectively. Yields for the same
period for the Short Term High Quality Bond, Target Maturity 2002, U.S.
Government Securities, Income and High Yield funds were ___%, ___%,___%, ___%
and ___% respectively.
    

   
    The tax equivalent yield for the Tax-Exempt Money Market, California Money,
Tax-Exempt Bond, California Municipal, California Insured Intermediate Municipal
and Florida Insured Municipal Funds is computed by dividing that portion of the
Fund's yield which is tax-exempt by one minus a stated federal and/or state
income tax rate and adding the product to that portion, if any, of the Fund's
yield that is not tax-exempt. The tax-equivalent yields for the outstanding
shares of the Tax-Exempt Money Market and California Money Fund, that are
treated as Class A shares, for the 7-day period ended October 31, 1998 were
___7% and ___%, respectively. The tax equivalent SEC 30-day yields for the
period ended October 31, 1998 for the outstanding shares of the Tax-Exempt Bond,
California Municipal, California Insured Intermediate Municipal, and Florida
Insured Municipal Funds were ___%, ___%,___% and ___%, respectively. The tax
equivalent yield based on the 30-day average yield for the period ended October
31, 1997 for the outstanding shares of the Tax-Exempt Bond, California
Municipal, California Insured Intermediate Municipal and Florida Insured
Municipal Funds were ___%, ___%, ___% and ___%, respectively. Tax-equivalent
yields assume the payment of federal income taxes at a rate of 39.6% and, if
applicable, California state income taxes at a rate of 9.3%.
    

                                      -66-
<PAGE>   227
    Capital appreciation for Class A, Class B and Class S shares of the
Municipal, Fixed-Income and the Equity Funds and the Portfolios (Class A and
Class B shares) shows principal changes for the period shown, and total return
combines principal changes and dividend and interest income reinvested for the
periods shown. Principal changes are based on the difference between the
beginning and closing net asset values for the period. Actual distributions
include short-term capital gains derived from option writing or other sources.
The period selected for performance data will depend upon the purpose of
reporting the performance.

    The total return of the Funds' and the Portfolios' (Class A and Class B
shares) Class A, Class B and Class S shares may be calculated on an "average
annual total return" basis, and may also be calculated on an "aggregate total
return" basis, for various periods. Average annual total return reflects the
average annual percentage change in the value of an investment in a Fund over
the particular measuring period. Aggregate total return reflects the cumulative
percentage change in value over the measuring period. Average annual total
return figures provided for Class A, Class B and Class S shares of the
Fixed-Income and Equity Funds and the Portfolios (Class A and Class B shares)
will be computed according to a formula prescribed by the SEC. The formula can
be expressed as follows:
                                  (n)
                          P(1 + T)    = ERV

Where:     P      =   a hypothetical initial payment of $1,000
           T      =   average annual total return/aggregate total return
           n      =   number of years
           ERV    =   Ending Redeemable Value of a hypothetical $1,000 payment
                      made at the beginning of the 1, 5 or 10 years (or other)
                      periods or the life of the Fund

    The formula for calculating aggregate total return can be expressed as
follows:

                  Aggregate Total Return = (ERV)
                                           -----  -1
                                             p

    The calculation of average annual total return and aggregate total return
assumes reinvestment of all income dividends and capital gain distributions on
the reinvestment dates during the period and includes all recurring fees charged
to all shareholder accounts. In addition, with respect to Class A shares, the
maximum sales charge is deducted from the initial $1,000 payment (variable "P"
in the formula).

    The ERV assumes complete redemption of the hypothetical investment at the
end of the measuring period and reflects deduction of all nonrecurring charges
at the end of the measuring period covered by the computation. A Fund's net
investment income changes in response to fluctuations in interest rates and the
expenses of the Fund.

                                      -67-
<PAGE>   228
   
     The average annual rates of return (unless otherwise noted) for the Funds
for the one-year, five-year and ten-year periods and for the period since
inception in each case ended October 31, 1998 are as follows:
    



                                      -68-
<PAGE>   229
   
<TABLE>
<CAPTION>

                                                                                                                          
                                                                                                               Aggregate
                                                                                                              Total Return
                                                                                                 Since          Ten Year
                                                                                                 Date        or from Date
                                                                                                   of         Inception, if
Fund and inception date                                         One     Five       Ten         Inception        shorter
<S>                                                            <C>      <C>        <C>         <C>           <C>
SHORT TERM HIGH QUALITY BOND FUND
   CLASS A SHARES 11/1/93
     Adjusted for Maximum Sales Charge                                              N/A 
     Not Adjusted for Sales Charge                                                  N/A 
   CLASS B SHARES 6/30/94
     Adjusted for Maximum Sales Charge                                  N/A         N/A 
     Not Adjusted for Sales Charge                                      N/A         N/A 
   CLASS S SHARES 6/30/94
     Adjusted for Maximum Sales Charge                                  N/A         N/A 
     Not Adjusted for Sales Charge                                      N/A         N/A 
TARGET MATURITY 2002 FUND
   CLASS A SHARES 3/20/95

     Adjusted for Maximum Sales Charge                                  N/A         N/A 
     Not Adjusted for Sales Charge                                      N/A         N/A 
CALIFORNIA MONEY FUND
   CLASS A SHARES 6/30/94

     Not Adjusted for Maximum Sales Charge                                          N/A
   CLASS B SHARES --
     Not Adjusted for Maximum Sales Charge                              N/A         N/A
   CLASS S SHARES 6/30/94
     Adjusted for Maximum Sales Charge                                  N/A         N/A
     Not Adjusted for Sales Charge                                      N/A         N/A
U.S. GOVERNMENT SECURITIES FUND
   CLASS A SHARES

     Adjusted for Maximum Sales Charge                                                            N/A
     Not Adjusted for Sales Charge                                                                N/A
   CLASS B SHARES 3/30/94
     Adjusted for Maximum Sales Charge                                  N/A         N/A
     Not Adjusted for Sales Charge                                      N/A         N/A
   CLASS S SHARES 3/23/98
     Adjusted for Maximum Sales Charge                          N/A     N/A         N/A
     Not Adjusted for Sales Charge                              N/A     N/A         N/A
INCOME FUND
   CLASS A SHARES

     Adjusted for Maximum Sales Charge                                                            N/A
     Not Adjusted for Sales Charge                                                                N/A
   CLASS B SHARES 3/30/94
     Adjusted for Maximum Sales Charge                                  N/A         N/A
     Not Adjusted for Sales Charge                                      N/A         N/A
   CLASS S SHARES 3/23/98
     Adjusted for Maximum Sales Charge                                  N/A         N/A
     Not Adjusted for Sales Charge                                      N/A         N/A
</TABLE>
    



                                      -69-
<PAGE>   230
   

<TABLE>
<S>                                                             <C>     <C>         <C>          <C>         <C>
TAX-EXEMPT BOND FUND
   CLASS A SHARES
     Adjusted for Maximum Sales Charge                                                            N/A
     Not Adjusted for Sales Charge                                                                N/A
   CLASS B SHARES 3/30/94
     Adjusted for Maximum Sales Charge                                  N/A         N/A
     Not Adjusted for Sales Charge                                      N/A         N/A
   CLASS S SHARES 3/23/98
     Adjusted for Maximum Sales Charge                                  N/A         N/A
     Not Adjusted for Sales Charge                                      N/A         N/A
CALIFORNIA MUNICIPAL FUND
   CLASS A SHARES 7/25/89

     Adjusted for Maximum Sales Charge                                              N/A
     Not Adjusted for Sales Charge                                                  N/A
   CLASS B SHARES 6/30/94
     Adjusted for Maximum Sales Charge                                  N/A         N/A
     Not Adjusted for Sales Charge                                      N/A         N/A
   CLASS S SHARES 6/30/94
     Adjusted for Maximum Sales Charge                                  N/A         N/A
     Not Adjusted for Sales Charge                                      N/A         N/A
CALIFORNIA INSURED INTERMEDIATE

   CLASS A SHARES 4/4/94
     Adjusted for Maximum Sales Charge                                  N/A         N/A 
     Not Adjusted for Sales Charge                                      N/A         N/A 
   CLASS B SHARES 6/30/94
     Adjusted for Maximum Sales Charge                                  N/A         N/A 
     Not Adjusted for Sales Charge                                      N/A         N/A 
   CLASS S SHARES 6/30/94
     Adjusted for Maximum Sales Charge                                  N/A         N/A 
     Not Adjusted for Sales Charge                                      N/A         N/A 
FLORIDA INSURED MUNICIPAL FUND
   CLASS A SHARES 6/7/93

     Adjusted for Maximum Sales Charge                                              N/A 
     Not Adjusted for Sales Charge                                                  N/A 
   CLASS B SHARES 6/30/94
     Adjusted for Maximum Sales Charge                                  N/A         N/A 
     Not Adjusted for Sales Charge                                      N/A         N/A 
   CLASS S SHARES 6/30/94
     Adjusted for Maximum Sales Charge                                  N/A         N/A 
     Not Adjusted for Sales Charge                                      N/A         N/A 
</TABLE>
    


                                      -70-
<PAGE>   231
   

<TABLE>
<CAPTION>
                                                                                                             Aggregate
                                                                                                           Total Return for
                                                                                                 Since     Ten Year Period
                                                                                                 Date      or from Date of
                                                             One         Five      Ten            of       Inception, if
        Fund and inception date                              Year        Year      Year        Inception   shorter
<S>                                                          <C>      <C>         <C>           <C>             <C>
BOND & STOCK FUND
   CLASS A SHARES
     Adjusted for Maximum Sales Charge                                                               
     Not Adjusted for Sales Charge                                                                   
   CLASS B SHARES 3/30/94
     Adjusted for Maximum Sales Charge                                 N/A         N/A    
     Not Adjusted for Sales Charge                                     N/A         N/A    
   CLASS S SHARES 5/06/98
     Adjusted for Maximum Sales Charge                                 N/A         N/A            
     Not Adjusted for Sales Charge                                     N/A         N/A  
GROWTH & INCOME FUND
   CLASS A SHARES

     Adjusted for Maximum Sales Charge                                                            
     Not Adjusted for Sales Charge                                                              
   CLASS B SHARES 3/30/94
     Adjusted for Maximum Sales Charge                                 N/A         N/A 
     Not Adjusted for Sales Charge                                     N/A         N/A 
   CLASS S SHARES 3/23/98
     Adjusted for Maximum Sales Charge                                 N/A         N/A 
     Not Adjusted for Sales Charge                                     N/A         N/A 
GROWTH FUND
   CLASS A SHARES 4/5/93

     Adjusted for Maximum Sales Charge                                             N/A 
     Not Adjusted for Sales Charge                                                 N/A 
   CLASS B SHARES 6/30/94
     Adjusted for Maximum Sales Charge                                 N/A         N/A 
     Not Adjusted for Sales Charge                                     N/A         N/A 
   CLASS S SHARES 6/30/94
     Adjusted for Maximum Sales Charge                                 N/A         N/A 
     Not Adjusted for Sales Charge                                     N/A         N/A 
INTERNATIONAL GROWTH FUND
   CLASS A SHARES 7/18/90

     Adjusted for Maximum Sales Charge                           --                N/A 
     Not Adjusted for Sales Charge                               --                N/A 
   CLASS B SHARES 6/30/94
     Adjusted for Maximum Sales Charge                           --    N/A         N/A 
     Not Adjusted for Sales Charge                               --    N/A         N/A 
   CLASS S SHARES 6/30/94
     Adjusted for Maximum Sales Charge                           --    N/A         N/A 
     Not Adjusted for Sales Charge                               --    N/A         N/A 
NORTHWEST FUND
   CLASS A SHARES

     Adjusted for Maximum Sales Charge                                                             N/A
</TABLE>
    


                                      -71-
<PAGE>   232
   

<TABLE>
<S>                                                           <C>      <C>         <C>           <C>             <C>

     Not Adjusted for Sales Charge                                        
   CLASS B SHARES 3/30/94
     Adjusted for Maximum Sales Charge                                 N/A         N/A
     Not Adjusted for Sales Charge                                     N/A         N/A
   CLASS S SHARES 5/06/98
     Adjusted for Maximum Sales Charge                                 N/A         N/A
     Not Adjusted for Sales Charge                                     N/A         N/A
EMERGING GROWTH FUND
   CLASS A SHARES 7/18/90

     Adjusted for Maximum Sales Charge                                             N/A
     Not Adjusted for Sales Charge                                                 N/A
   CLASS B SHARES 6/30/94
     Adjusted for Maximum Sales Charge                                 N/A         N/A
     Not Adjusted for Sales Charge                                     N/A         N/A
   CLASS S SHARES 6/30/94
     Adjusted for Maximum Sales Charge                                 N/A         N/A
     Not Adjusted for Sales Charge                                     N/A         N/A
</TABLE>
    

    Each Portfolio is modeled after an investment strategy used by the WM
Strategic Asset Management ("SAM") program, an investment management service
offered by WM Fund Services Inc., an affiliate of the Portfolios' Advisor that
allocates investments across a combination of the underlying Funds. Set forth
below is certain performance data for the Portfolios and, prior to the
Portfolios' inception, those strategies. Performance information for the
strategies is deemed relevant because each strategy was managed using virtually
the same investment objectives, policies and restrictions as those used by the
Portfolios. Nonetheless, the performance data is not necessarily indicative of
the future performance of the Portfolios.

   
     Because of certain differences in the expenses applicable to the SAM
program and the Portfolios, the following performance information has been
adjusted by applying the current total expense ratios for the Class A shares of
the Portfolios. The average annual total return of the following investment
strategies for the one-year period, the five-year period and the period from
inception of the strategy, in each case ended October 31, 1998, was as follows:
    


   

<TABLE>
<CAPTION>
                                                                                                                  Since
                                                                                                                   Date
Portfolio/strategy and inception date                                           One    Five         Ten             of
                                                                               Year    Year        Year          Inception
<S>                                                                            <C>     <C>          <C>          <C>
STRATEGIC GROWTH PORTFOLIO
   CLASS A SHARES 5/31/95

     Adjusted for Maximum Sales Charge                                                  N/A         N/A 
     Not Adjusted for Sales Charge                                                      N/A         N/A 
   CLASS B SHARES 5/31/95
     Adjusted for Maximum Sales Charge                                                  N/A         N/A 
     Not Adjusted for Sales Charge                                                      N/A         N/A 
CONSERVATIVE GROWTH PORTFOLIO
   CLASS A SHARES  9/30/90

     Adjusted for Maximum Sales Charge                                                              N/A
</TABLE>
    



                                      -72-
<PAGE>   233
   


<TABLE>
<S>                                                                            <C>     <C>          <C>          <C>

     Not Adjusted for Sales Charge                                                                  N/A  
   CLASS B SHARES 6/30/94
     Adjusted for Maximum Sales Charge                                                  N/A         N/A  
     Not Adjusted for Sales Charge                                                      N/A         N/A  
BALANCED PORTFOLIO
   CLASS A SHARES 9/30/90

     Adjusted for Maximum Sales Charge                                                              N/A  
     Not Adjusted for Sales Charge                                                                  N/A  
   CLASS B SHARES 6/30/94
     Adjusted for Maximum Sales Charge                                                  N/A         N/A  
     Not Adjusted for Sales Charge                                                      N/A         N/A  
FLEXIBLE INCOME PORTFOLIO
   CLASS A SHARES 3/31/93

     Adjusted for Maximum Sales Charge                                                              N/A  
     Not Adjusted for Sales Charge                                                                  N/A  
   CLASS B SHARES 6/30/94
     Adjusted for Maximum Sales Charge                                                  N/A         N/A  
     Not Adjusted for Sales Charge                                                      N/A         N/A  
INCOME PORTFOLIO
   CLASS A SHARES 9/30/90

     Adjusted for Maximum Sales Charge                                                              N/A  
     Not Adjusted for Sales Charge                                                                  N/A  
   CLASS B SHARES 6/30/94
     Adjusted for Maximum Sales Charge                                                  N/A         N/A  
     Not Adjusted for Sales Charge                                                      N/A         N/A  
</TABLE>
    

    The performance of a Fund's Class A, Class B and Class S shares and the
Portfolio's Class A and Class B shares will vary from time to time depending
upon market conditions, the composition of the Fund's or Portfolio's portfolio
and the Fund's or Portfolio's operating expenses. Consequently, any given
performance quotation should not be considered representative of the Fund's or
Portfolio's performance for any specified period in the future. In addition,
because performance will fluctuate, it may not provide a basis for comparing an
investment in a Fund or Portfolio with certain bank deposits or other
investments that pay a fixed yield or return for a stated period of time.

    Investors should recognize that, because the Funds other than the Equity
Funds and each of the Portfolios will have a high component of fixed-income
securities, in periods of declining interest rates the yields of the Funds will
tend to be somewhat higher than prevailing market rates, and in periods of
rising interest rates yields will tend to be somewhat lower. In addition, when
interest rates are falling, the inflow of net new money to the Funds and
Portfolios from the continuous sale of shares will likely be invested in
portfolio instruments producing lower yields than the balance of the Fund's or
Portfolio's securities, thereby reducing the current yields of the Funds. In
periods of rising interest rates, the opposite can be expected to occur.
Comparative performance information may be used from time to time in advertising
the Trusts' Class A, Class B and Class S shares, including data from Lipper
Analytical Services, Inc., the S&P 500 Composite Stock Price Index, the Dow
Jones Industrial Average and other industry


                                      -73-
<PAGE>   234
publications. The International Growth Fund may compare its performance to other
investments or relevant indexes consisting of Morgan Stanley Capital
International EAFE Index, the Standard & Poor's 500 Index, the Lipper
International Fund Index and The Financial Times World Stock Index.

                                      TAXES

    The following discussion of federal income tax consequences is based on the
Code and the regulations issued thereunder as in effect on the date of this
Statement of Additional Information and all references to the Funds in this
discussion includes the Portfolios. New legislation, as well as administrative
changes or court decisions, may significantly alter the conclusions expressed
herein, and may have a retroactive effect with respect to the transactions
contemplated herein.

    Each Fund is treated as a separate entity for federal income tax purposes
and is not combined with the other funds within a Trust. Each of the Funds
intends to continue qualifying as a "regulated investment company" ("RIC") as
defined under Subchapter M of the Code. A Fund that is a RIC and distributes to
its shareholders at least 90% of its taxable net investment income (including,
for this purpose, its net realized short-term capital gains) and 90% of its
tax-exempt interest income (reduced by certain expenses), will not be liable for
federal income taxes on that part of its income distributed to its stockholders.

    In order to qualify as a RIC under the Code, in addition to satisfying the
distribution requirement described above, each Fund must (a) derive at least 90%
of its gross income each taxable year from dividends, interest, payments with
respect to securities loans, gains from the sale or other disposition of stock,
securities, or foreign currencies, and certain other related income, including,
generally, certain gains from options futures, and forward contracts; and (b)
diversify its holdings so that, at the end of each fiscal quarter of the Fund's
taxable year, (i) at least 50% of the market value of the Fund's assets is
represented by cash and cash items, U.S. Government Securities, securities of
other RICs, and other securities, with such other securities limited, in respect
to any one issuer, to an amount that does not represent more than 10% of the
outstanding voting securities of such issuer or exceed 5% of the value of the
Fund's total assets and (ii) not more than 25% of the value of its assets is
invested in the securities (other than U.S. Government Securities and securities
of other RICs) of any one issuer or of two or more issuers which the Fund
controls and which are engaged in the same, similar, or related trades or
businesses.

    If a Fund fails to qualify as a RIC for any year, all of its income will be
subject to tax at corporate rates, and its distributions (including capital
gains distributions) will in general be taxable as ordinary income dividends to
its shareholders, subject to the dividends received deduction for corporate
shareholders.


                                      -74-
<PAGE>   235
    Notwithstanding the distribution requirement described above, which only
requires a Fund to distribute at least 90% of its annual investment company
taxable income and tax-exempt interest income and does not require any minimum
distribution of net capital gain (the excess of net long-term capital gain over
net short-term capital loss), a Fund will be subject to a nondeductible 4%
federal excise tax to the extent it fails to distribute by the end of any
calendar year at least 98% of its ordinary income for that year and at least 98%
of its capital gain net income (the excess of short- and long-term capital gains
over short- and long-term capital losses) for the one-year period ending on
October 31 of that year, plus certain other amounts. Each Fund intends to make
distributions sufficient to avoid imposition of the 4% excise tax.

   
    The Tax-Exempt Money Market, California Money, Tax-Exempt Bond, California
Municipal, California Insured Intermediate Municipal and Florida Insured
Municipal Funds will be qualified to pay exempt-interest dividends to their
shareholders only if, at the close of each quarter of a Fund's taxable year, at
least 50% of the total value of a Fund's assets consist of obligations the
interest on which is exempt from federal income tax. Part or all of the interest
on indebtedness incurred or continued by a shareholder to purchase or carry
shares of these funds will not be deductible for federal income tax purposes or,
in the case of the California and Florida Funds, for California and Florida
income tax purposes. Any loss on the sale or exchange of shares in these Funds
held for six months or less will be disallowed to the extent of any
exempt-interest dividend received by the shareholders with respect to such
shares. In addition, the Code may require a shareholder who receives
exempt-interest dividends to treat as taxable income a portion of certain
otherwise non-taxable social security and railroad retirement benefit payments.
Municipal funds may not be an appropriate investment for persons (including
corporations and other business entities) who are "substantial users" (or who
are related to substantial users) of facilities financed by "private activity
bonds" or "industrial development bonds." For these purposes, the term
"substantial user" is defined generally to include a "non-exempt person" who
regularly uses in a trade or business a part of a facility financed from the
proceeds of such bonds. Moreover, as noted in the Prospectus, some or all of
these Funds' dividends may be a specific preference item, or a component of an
adjustment item, for purposes of the federal individual and corporate
alternative minimum taxes. In addition, the receipt of dividends and
distributions may affect a foreign corporate shareholder's federal "branch
profits" tax liability and a Subchapter S corporate shareholder's federal
"excess net passive income" tax liability. Similar rules apply for California
State personal income tax purposes. Shareholders should consult their own tax
advisers as to whether they are (1) "substantial users" with respect to a
facility or "related" to such users within the meaning of the Code or (2)
subject to federal alternative minimum tax, the federal "branch profits" tax, or
the federal "excess net passive income" tax. Issuers of bonds purchased by the
Municipal Funds (or the beneficiary of such bonds) may have made certain
representations or covenants in connection with the issuance of such bonds to
satisfy certain requirements of the Code that must be satisfied subsequent to
the issuance of such bonds. Shareholders should be aware that exempt-interest
dividends may become subject to federal income taxation retroactively to the
date of issuance of the bonds to which such
    


                                      -75-
<PAGE>   236
dividends are attributable if such representations are determined to have been
inaccurate or if the issuers (or the beneficiary) of the bonds fail to comply
with certain covenants made at that time.

    Distributions made by the Fixed-Income Funds generally will not be eligible
for the dividends received deduction otherwise available to corporate taxpayers.
In addition, the dividends received deduction shall be disallowed with respect
to a dividend from any other Fund unless a corporate shareholder held its shares
on the ex-dividend date and for at least 45 more days during the 90-day period
surrounding the ex-dividend date, without protection from risk of loss.

    As described above and in the Prospectus, certain of the Funds may invest in
certain types of futures contracts and options. The Funds anticipate that these
investment activities will not prevent the Funds from qualifying as RICs. As a
general rule, these investment activities may accelerate, increase or decrease
the amount of long-term and short-term capital gains or losses realized by a
Fund and, accordingly, will affect the amount of capital gains distributed to a
Fund's shareholders.

    A Fund's transactions in foreign currencies, foreign currency-denominated
debt securities and certain foreign currency options, futures contracts and
forward contracts (and similar instruments) may give rise to ordinary income or
loss to the extent such income or loss results from fluctuations in the value of
the foreign currency concerned. In addition, if a Fund engages in hedging
transactions, including hedging transactions in options, futures contracts and
straddles (or other similar transactions), it will be subject to special tax
rules (including mark-to-market, straddle, wash sale, short sale and
constructive sale rules), the effect of which may be to accelerate income to a
Fund, defer losses to a Fund, cause adjustments in the holding periods of a
Fund's securities, or convert short-term capital losses into long-term capital
losses. These rules could therefore affect the amount, timing and character of
distributions to shareholders. Each Fund will endeavor to make any available
elections pertaining to such transactions in a manner believed to be in the best
interests of the Fund.

   
    Distributions of net capital gains (i.e., the excess of net gains from
capital assets held for more than one year over net losses from capital assets
held for not more than one year) that are designated by a Fund as capital gain
dividends will generally be taxable to a shareholder receiving such
distributions as long-term capital gain (generally taxed at a 20% tax rate for
noncorporate shareholders) regardless of how long the shareholder has held Fund
shares. If a shareholder held shares six months or less and during that period
received a distribution of net capital gains, any loss realized on the sale of
such shares during such six-month period would be a long-term capital loss to
the extent of such distribution.
    

    While only the Equity Funds expect to realize a significant amount of net
long-term capital gains, any such realized gains will be distributed as
described in the Prospectus and will be designated as such in a written notice
mailed to the shareholder after the close of the Fund's


                                      -76-
<PAGE>   237
taxable year. Any loss on the sale or exchange of shares in a Fund that have
been held for six months or less will be treated as a long-term capital loss to
the extent of any capital gain dividend received by the shareholder with respect
to such shares. In addition, all or a portion of any loss realized upon a
taxable disposition of Fund shares will be disallowed if other shares of the
same Fund are purchased within 30 days before or after the disposition. In such
a case, the basis of the newly purchased shares will be adjusted to reflect the
disallowed loss.

    Dividends and distributions on a Fund's shares are generally subject to
federal income tax as described herein to the extent they do not exceed the
Fund's realized income and gains, even though such dividends and distributions
may economically represent a return of a particular shareholder's investment.
Such distributions are likely to occur in respect of shares purchased at a time
when a Fund's net asset value reflects gains that are either unrealized, or
realized but not distributed. Such realized gains may be required to be
distributed, even when a Fund's net asset value also reflects unrealized losses.

ADDITIONAL CONSIDERATIONS FOR SHAREHOLDERS OF THE INTERNATIONAL
GROWTH FUND

   
    If at the end of the International Growth Fund's fiscal year more than 50%
of the value of its total assets represents securities of foreign corporations,
the Fund intends to make an election permitted by the Code to treat any foreign
taxes paid by it on securities it has held for at least the minimum period
specified in the Code as having been paid directly by the Fund's shareholders in
connection with the Fund's dividends received by them. In this case,
shareholders generally will be required to include in U.S. taxable income their
pro rata share of such taxes, and those shareholders who are U.S. citizens, U.S.
corporations and, in some cases, U.S. residents will be entitled to deduct their
share of such taxes. Alternatively, such shareholders who hold Fund shares
(without protection from risk of loss) on the ex-dividend date and for at least
15 other days during the 30-day period surrounding the ex-dividend date will be
entitled to claim a foreign tax credit for their share of these taxes.
    

   
    In addition, investment by a Fund in an entity that qualified as a "passive
foreign investment company" under the Code could subject the Fund to a U.S.
federal income tax or other charge on certain "excess distributions" with
respect to the investment, and on the proceeds from disposition of the
investment. This tax or charge may be avoided, however, by making an election to
mark such investments to market annually or to treat the passive foreign
investment company as a "qualified electing fund."
    

   
    A "passive foreign investment company" is any foreign corporation: (i) 75
percent or more of the income of which for the taxable year is passive income,
or (ii) the average percentage of the assets of which (generally by value, but
by adjusted tax basis in certain cases) that produce or are held for the
production of passive income is at least 50 percent. Generally, passive income
for this purpose means dividends, interest (including income equivalent to
interest), royalties, rents, annuities, the excess of gains over losses from
certain property transactions
    


                                      -77-
<PAGE>   238
and commodities transactions, and foreign currency gains. Passive income for
this purpose does not include rents and royalties received by the foreign
corporation from active business and certain income received from related
persons.

   
ADDITIONAL CONSIDERATIONS FOR SHAREHOLDERS OF THE CALIFORNIA
MONEY FUND, CALIFORNIA MUNICIPAL FUND AND CALIFORNIA INSURED
INTERMEDIATE MUNICIPAL FUND.
    

   
    If, at the close of each quarter of its taxable year, at least 50% of the
value of the total assets of each of the California Money Fund, California
Municipal Fund and California Insured Intermediate Municipal Fund (The
"California Funds") consist of obligations the interest on which would be exempt
from California personal income tax if the obligations were held by an
individual ("California Tax-Exempt Obligations"), and if each of the California
Funds continues to qualify as a regulated investment company for federal income
tax purposes, then each respective California Fund will be qualified to pay
dividends, subject to certain limitations, to its shareholders that are exempt
from California State personal income tax, but not from California State
franchise tax or California State corporate income tax ("California
Exempt-Interest Dividends"). However, the total amount of California
Exempt-Interest Dividends paid by each of the California Funds to each of the
California Fund's non-corporate shareholders with respect to any taxable year
cannot exceed the amount of interest received by such California Fund during
such year on California Tax-Exempt Obligations less any expenses and
expenditures (including any dividends paid to corporate shareholders) deemed to
have been paid from such interest. If the aggregate dividends exceed the amount
that may be treated as California Exempt-Interest Dividends, only that
percentage of each dividend distribution equal to the ratio of aggregate
California Exempt-Interest Dividends to aggregate dividends will be treated as a
California Exempt-Interest Dividend. Dividend distributions that do not qualify
for treatment as California Exempt-Interest Dividends will be taxable to
shareholders at ordinary tax rates for California personal income tax purposes.
In addition, shareholders who receive social security or railroad retirement
benefits should consult their tax advisors to determine what effect, if any, an
investment in one of these Funds may have on the taxation of these benefits.
    

FLORIDA TAXES

    TAXATION OF FUND SHARES. Florida does not impose an income tax on
individuals. Thus, dividends and distributions paid by the Florida Insured
Municipal Fund to individuals who are residents of Florida are not taxable by
Florida. Florida imposes an income tax on corporations and similar entities at a
rate of 5.5%. Distributions of investment income and capital gains by the
Florida Insured Municipal Fund will be subject to Florida corporate income tax.
Accordingly, investors in the Florida Insured Municipal Fund, including, in
particular, investors that may be subject to the Florida corporate income tax,
should consult their tax advisors with respect to the application of the Florida
corporate income tax to the


                                      -78-
<PAGE>   239
receipt of Fund dividends and distributions and to the investor's Florida tax
situation in general.

    Florida imposes a tax on intangible personal property owned by Florida
residents. Shares in the Florida Insured Municipal Fund constitute intangible
personal property for purposes of the Florida intangible personal property tax.
Thus, unless an exemption applies, shares in the Florida Insured Municipal Fund
will be subject to the Florida intangible personal property tax. Florida
provides an exemption for shares in an investment fund if the fund's portfolio
of assets consists solely of assets exempt from the Florida intangible personal
property tax. Assets exempt from Florida intangible personal property tax
include obligations issued by the State of Florida and its political
subdivisions, municipalities, and public authorities; obligations of the United
States Government or its agencies; and cash.

    The Florida Insured Municipal Fund has received a ruling from the Florida
Department of Revenue that if, on the last business day of any calendar year,
the Insured Municipal Fund's assets consist solely of assets exempt from the
Florida intangible personal property tax, shares of the Florida Insured
Municipal Fund will be exempt from the Florida intangible personal property tax
in the following year. Based on the ruling, if the Insured Municipal Fund's
assets consist, on the last business day of the calendar year, solely of assets
exempt from the Florida intangible personal property tax, shares of the Florida
Insured Municipal Fund owned by Florida residents will be exempt from the
Florida intangible personal property tax. If shares of the Fund are subject to
the Florida intangible personal property tax because less than 100% of the
Fund's assets on the last business day of the calendar year consists of assets
exempt from the Florida intangible personal property tax, only the portion of
the net asset value of a share of the Florida Insured Municipal Fund that is
attributable to obligations of the United States Government will be exempt from
taxation.

    TAXATION OF THE FLORIDA INSURED MUNICIPAL FUND. If the Fund does not have a
taxable nexus to Florida, such as through the location of the Florida Fund's
activities or those of its advisors within the state, under present Florida law,
the Fund is not subject to Florida corporate income taxation. Additionally, if
the Fund's assets do not have a taxable situs in Florida as of January 1 of each
calendar year, the Fund will not be subject to the Florida intangible personal
property tax. If the Fund has a taxable nexus to Florida or the Fund's assets
have a taxable situs in Florida, the Fund will be subject to Florida taxation.
The Florida Insured Municipal Fund intends to operate so as not to be subject to
Florida taxation.

SHAREHOLDER STATEMENTS

    Each shareholder will receive after the close of the calendar year an annual
statement and such other written notices as are appropriate as to the federal
income and California State personal income tax status of the shareholder's
dividends and distributions received from the Fund for the prior calendar year.
These statements will also inform shareholders as to the amount of
exempt-interest dividends that is a specific preference item for purposes of the
federal individual and


                                      -79-
<PAGE>   240
corporate alternative minimum taxes and as to the exempt portion, if any, of the
shareholder's shares of the Florida Insured Municipal Fund for purposes of the
Florida State intangible personal property tax for the current tax year.
Shareholders should consult their tax advisers as to any other state and local
taxes that may apply to these dividends and distributions. The dollar amount of
dividends excluded or exempt from federal income taxation or California State
personal income taxation and the dollar amount of dividends subject to federal
income taxation or California State personal income taxation, if any, will vary
for each shareholder depending upon the size and duration of each shareholder's
investment in a Fund. To the extent that the Tax-Exempt Money Market, California
Money, Tax-Exempt Bond, California Municipal, California Insured Intermediate
Municipal or Florida Insured Municipal Funds earns taxable net investment
income, it intends to designate as taxable dividends the same percentage of each
day's dividend (or of each day's taxable net investment income) as its taxable
net investment income bears to its total net investment income earned on that
day. Therefore, the percentage of each day's dividend designated as taxable, if
any, may vary from day to day.

    If a shareholder fails to furnish a correct taxpayer identification number,
fails to report fully dividend or interest income, or fails to certify that the
taxpayer identification number is correct and that the shareholder is not
subject to "backup withholding," then the shareholder may be subject to a 31%
"backup withholding" tax with respect to (1) taxable dividends and distributions
and (2) the proceeds of any redemptions of Fund shares. An individual's taxpayer
identification number is his or her social security number. The 31% "backup
withholding" tax is not an additional tax and may be credited against a
taxpayer's regular federal income tax liability.

    THE FOREGOING IS ONLY A SUMMARY OF CERTAIN TAX CONSIDERATIONS GENERALLY
AFFECTING A FUND AND ITS SHAREHOLDERS, AND IS NOT INTENDED AS A SUBSTITUTE FOR
CAREFUL TAX PLANNING. SHAREHOLDERS ARE URGED TO CONSULT THEIR TAX ADVISORS WITH
SPECIFIC REFERENCE TO THEIR OWN TAX SITUATIONS, INCLUDING THEIR STATE AND LOCAL
TAX LIABILITIES.

                                   DISTRIBUTOR

   
    Prior to March 20, 1998, WM Fund Services Inc. (formerly named Sierra
Investment Services Inc.) served as the distributor for WM Trust II. For the
fiscal years ended October 31, 1998, June 30, 1998 and June 30, 1997, the
Distributor and WM Fund Services Inc. (formerly Sierra Investment Services
Corp.) received distribution fees totaling (after waivers of fees) $_________,
$1,839,806 and $5,278,281, respectively, in the aggregate, from the WM Trust II
Funds under the Class A Plan. For the same periods, the Distributor and WM Fund
Services Inc. received $_________, $0 and $13,944, $_________, respectively,
representing contingent deferred sales charges on redemptions of Class A shares
of the Funds. In addition, for the fiscal years ended October 31, 1998, June 30,
1998 and June 30, 1997, the Distributor and WM Fund Services Inc. received
$_________, $180,165 and $303,490, respectively, representing compensation from
front-end sales charges on Class A shares of such Funds sold.
    


                                      -80-
<PAGE>   241
   
During the fiscal year ended October 31, 1998, the Distributor and WM Fund
Services Inc. incurred distribution and operating expenses with respect to Class
A shares of the Funds totaling $_________ consisting of $_________ for
advertising; $_________ for marketing promotion; $_________ for fulfillment;
$_________ in commissions and additional compensation to the personnel of WM
Fund Services Inc. and $_________ in other expenses.
    

   
    WM Fund Services Inc. also served as distributor of Class B and S shares of
the WM Trust II Funds. For the fiscal year ended October 31, 1998, the
Distributor and WM Fund Services Inc. received distribution fees from the Funds
totaling $_________, in the aggregate under the Class B Distribution Plan and
$_________, in the aggregate under the Class S Distribution Plan. For the same
period, the Distributor and WM Fund Services Inc. received $_________,
representing CDSCs on redemptions of Class B shares of the Funds and $_________,
representing CDSCs on redemptions of Class S shares of the Funds. For the fiscal
year ended October 31, 1998, WM Fund Services Inc. did not waive any
distribution fees. The Distributor and WM Fund Services Inc. paid out all of the
distribution related fees they received for each of the Class B and Class S
shares to the financier of the sales commissions paid on sale of Class B and S
shares, respectively.
    

    The Distributor also serves as the distributor for the Portfolios. The
Distributor received $41,197, $318,337, $265,656, $25,447 and $27,083,
respectively, from the Strategic Growth, Conservative Growth, Balanced, Flexible
Income and Income Portfolios in connection with the sales of Class A shares in
1998. For the fiscal period from July 1, 1998 through October 31, 1998, the
Distributor received $_______, $_______, $________, $________and $________ from
the respective Portfolios. Such payments totaled $16,775, $210,208, $173,926,
$21,809 and $23,425 in 1997.

   
    During the fiscal year ended October 31, 1998, the Distributor incurred
distribution and operating expenses with respect to Class A shares of the
Portfolios totaling $_________ consisting of $_________ for advertising;
$_________ for marketing promotion; $_________ for fulfillment; $_________ in
commissions and additional compensation to personnel and $_________ in other
expenses.
    

                                      -81-
<PAGE>   242
   
    

   
    For the same time period, the Distributor received the following contingent
deferred sales charge payments for Class B shares from the Portfolios:
$_________, $_________, $_________, $_________ and $_________ from the Strategic
Growth, Conservative Growth, Balanced, Flexible Income and Income Portfolios,
respectively, though October 31, 1998.
    

   
    The Distributor received $_________, $_________, $_________, $_________ and
$_________ from the Strategic Growth, Conservative Growth, Balanced, Flexible
Income and Income Portfolios, respectively, for the fiscal year ended October
31, 1998 in connection with the sales of Class B shares.
    

    WM Funds Distributor, Inc. (formerly Composite Funds Distributor, Inc. and
referred to as the Distributor in this SAI) serves as the distributor for the WM
Trust I Funds. The Money Market and Tax-Exempt Money Market Funds reimbursed the
Distributor $50,492 and $0, respectively, for distribution expenses incurred
during 1997. Of this amount, $28,559 was paid for printing and $21,933 was for
other distribution-related expenses. During 1996 the Money Market and Tax-Exempt
Money Market Funds reimbursed the Distributor $20,720 and $0, respectively and
in 1995 each reimbursed the Distributor $18,754 and $0, respectively.

    During 1997 the Money Market and Tax-Exempt Money Market Funds compensated
the Distributor $2,233 and $91, respectively, for the sale of Class B shares.
During 1996, the Money Market and Tax-Exempt Funds compensated the Distributor
$1,270 and $16, respectively, for the sale of Class B shares. During 1995, the
Money Market and Tax-Exempt Portfolios compensated the Distributor $702 and $11,
respectively, for the sale of Class B shares.

    During the fiscal year ended December 31, 1997, the Distributor received
contingent deferred sales charge payments of $5,618 and $0 upon redemption of
Class B shares of the Money Market Fund and Tax-Exempt Fund, respectively. For
the fiscal year ended December 31, 1996, the Distributor received contingent
deferred sales charge payments of $5,275 and $0 upon redemption of Class B
shares of the Money Market Fund and Tax-Exempt Money Market Fund, respectively.
No brokerage fees were paid by the Fund to the Distributor during the year, but
the Distributor may act as broker on portfolio purchases and sales should it
become a member of a securities exchange.

    The U.S. Government Securities, Income, and Tax-Exempt Bond Funds reimbursed
the Distributor in the amounts of $248,837, $169,132 and $407,707, respectively,
for distribution


                                      -82-
<PAGE>   243
expenses incurred on behalf of Class A shares during the year ended December 31,
1997. Of this amount, $119,084, $77,335 and $200,406 was paid on behalf of the
U.S. Government Securities, Income, and Tax-Exempt Bond Funds, respectively, to
selected dealers and registered representatives of the Distributor for their
shareholder servicing activities, and $129,748, $91,797 and $207,301,
respectively, was paid for other distribution related expenses.

    During the fiscal years 1996 and 1995, the U.S. Government Securities Fund
reimbursed the Distributor $218,510 and $343,633, respectively; the Income Fund
reimbursed the Distributor $133,600 and $168,531, respectively; and the
Tax-Exempt Bond Fund reimbursed the Distributor $315,034 and $432,854,
respectively, for distribution expenses related to Class A shares.

    During the fiscal years ended December 31, 1997 and 1996, respectively, the
U.S. Government Securities Fund compensated the Distributor in the amounts of
$29,872 and $26,484, respectively; the Income Fund compensated the Distributor
in the amounts of $78,016 and $57,828, respectively, and the Tax-Exempt Bond
Fund compensated the Distributor $66,282 and $40,939, respectively, for the sale
of Class B shares.

    During the 1997, 1996 and 1995 fiscal years, the Distributor received
$55,967, $89,694 and $150,970, respectively, for the sale of U.S. Government
Securities Fund Class A shares; $102,701, $156,410 and $209,703, respectively,
for the sale of Income Fund Class A shares; and $195,489, $282,768 and $341,454,
respectively, for the sale of Tax-Exempt Bond Fund Class A shares.

    During the fiscal year ended December 31, 1997, the Distributor received
contingent deferred sales charge payments of $8,623, $20,754 and $11,543 upon
redemption of Class B shares of the U.S. Government Securities, Income, and
Tax-Exempt Bond Funds, respectively. No brokerage fees were paid by the Funds to
the Distributor during the year, but the Distributor may act as a broker on
portfolio purchases and sales should it become a member of a securities
exchange.

    The Bond & Stock, Growth & Income and Northwest Funds reimbursed the
Distributor in the amounts of $701,288, $563,809 and $537,269, respectively, for
distribution expenses incurred on behalf of Class A shares during fiscal 1997.
Of this amount, $271,656, $205,286 and $210,705 was paid on behalf of the Bond &
Stock, Growth & Income and Northwest Funds to sales personnel of the Distributor
and to selected dealers for their shareholder servicing activities; $30,762,
$57,056 and $46,096, respectively, was paid for printing; and $195,701, $167,292
and $257,705, respectively, was paid for other advertising expenses.

    During fiscal years 1996 and 1995, the Bond & Stock Fund reimbursed the
Distributor $394,279 and $356,379, respectively; the Growth & Income Fund
reimbursed the Distributor $265,579 and $203,566, respectively; and Northwest
reimbursed the Distributor $360,642 and $279,851, respectively, for distribution
expenses related to Class A shares.


                                      -83-
<PAGE>   244
    During fiscal years 1997, 1996 and 1995, the Bond & Stock Fund compensated
the Distributor in the amounts of $334,855, $148,688 and $46,435, respectively;
the Growth & Income Fund compensated the Distributor $365,290, $151,222 and
$49,988, respectively; and the Northwest Fund compensated the Distributor
$247,630, $106,606 and $49,126, respectively, for distribution expenses related
to Class B shares.

    During the 1997, 1996 and 1995 fiscal years, the Distributor received
$885,598, $1,064,004 and $471,479, respectively, for the sale of Bond & Stock
Class A shares. The Distributor retained $710,403, $1,047,926 and $471,455,
respectively, for the same time periods, with the balance paid to dealers for
their sales of Bond & Stock Class A shares.

    During the 1997, 1996 and 1995 fiscal years, the Distributor received
$825,142, $586,437 and $384,766, respectively, for the sale of Growth & Income
Class A shares. The Distributor retained $666,246, $563,398 and $384,647,
respectively, for the same time periods, with the balance paid to dealers for
their sales of Growth & Income Class A shares.

    During the fiscal years 1997, 1996 and 1995 the Distributor received
$799,120, $517,022 and $348,729, respectively, for the sale of Northwest Class A
shares. The Distributor retained $551,530, $465,694 and $337,189, respectively,
for the same time periods, with the balance paid to dealers for their sales of
Northwest Class A shares.

    During the fiscal year ended October 31, 1997, the Distributor received
contingent deferred sales charge payments of $63,218, $63,310 and $37,195 upon
redemption of Class B shares of Bond & Stock, Growth & Income, and Northwest,
respectively. No brokerage fees were paid by the Funds to the Distributor during
the year, but the Distributor may act as a broker on portfolio purchases and
sales should it become a member of a securities exchange.


                                      -84-
<PAGE>   245
                                    APPENDIX

             DESCRIPTION OF BOND, NOTES AND COMMERCIAL PAPER RATINGS

DESCRIPTION OF S&P CORPORATE BOND RATINGS

    AAA: Bonds rated AAA have the highest rating assigned by S&P to a debt
obligation. Capacity to pay interest and repay principal is extremely strong.

    AA: Bonds rated AA have a very strong capacity to pay interest and repay
principal and differ from the highest rated issues only in small degree.

    A: Bonds rated A have a strong capacity to pay interest and repay principal
although they are somewhat more susceptible to the adverse effects of changes in
circumstances and economic conditions than bonds in higher rated categories.

DESCRIPTION OF MOODY'S CORPORATE BOND RATINGS

    Aaa: Bonds which are rated Aaa are judged to be the best quality. They carry
the smallest degree of investment risk and are generally referred to as
"gilt-edged." Interest payments are protected by a large or by an exceptionally
stable margin and principal is secure. While the various protective elements are
likely to change, such changes as can be visualized are most unlikely to impair
the fundamentally strong position of such issues.

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

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

    Moody's applies the numerical modifiers 1, 2 and 3 to each generic rating
classification from Aa through B. The modifier 1 indicates that the issue ranks
in the higher end of its generic rating category; the modifier 2 indicates a
mid-range ranking; and the modifier 3 indicates that the issue ranks in the
lower end of its generic rating category.

DESCRIPTION OF DUFF & PHELPS' CORPORATE BOND RATINGS


                                      -85-
<PAGE>   246
    Bonds rated AAA by Duff & Phelps are judged by Duff & Phelps to be of the
highest credit quality, with negligible risk factors being only slightly more
than for risk-free U.S. Treasury debt. Bonds rated AA by Duff & Phelps are
judged by Duff & Phelps to be of high credit quality with strong protection
factors and risk that is modest but that may vary slightly from time to time
because of economic conditions. Bonds rated A by Duff & Phelps are judged by
Duff & Phelps to have average but adequate protection factors. However, risk
factors are more variable and greater in periods of economic stress. Bonds rated
BBB by Duff & Phelps are judged by Duff & Phelps as having below average
protection factors but still considered sufficient for prudent investment, with
considerable variability in risk during economic cycles.

DESCRIPTION OF FITCH'S CORPORATE BOND RATINGS

    Bonds rated AAA by Fitch are considered to be investment grade and of the
highest credit quality. The obligor has an exceptionally strong ability to pay
interest and repay principal, which is unlikely to be affected by reasonably
foreseeable events. Bonds rated AA by Fitch are considered to be investment
grade and of very high credit quality. The obligor's ability to pay interest and
repay principal is very strong, although not quite as strong as bonds rated AAA.
Bonds rated A by Fitch are considered to be investment grade and of high credit
quality. The obligor's ability to pay interest and repay principal is considered
to be strong, but may be more vulnerable to adverse changes in economic
conditions and circumstances than bonds with higher ratings. Bonds rated BBB by
Fitch are considered to be investment grade and of satisfactory credit quality.
The obligor's ability to pay interest and repay principal is considered to be
adequate. Adverse changes in economic conditions and circumstances, however, are
more likely to have adverse impact on these bonds, and therefore impair timely
payment. The likelihood that the ratings of these bonds will fall below
investment grade is higher than for bonds with higher ratings.

DESCRIPTION OF S&P MUNICIPAL BOND RATINGS

    AAA - Prime - These bonds have the highest rating assigned by S&P. Capacity
to pay interest and repay principal is extremely strong.

    General Obligation Bonds - In a period of economic stress, the issuers will
suffer the smallest declines in income and will be least susceptible to
autonomous decline. Debt burden is moderate. A strong revenue structure appears
more than adequate to meet future expenditure requirements.

Quality of management appears superior.

    Revenue Bonds - Debt service coverage has been, and is expected to remain,
substantial. Stability of the pledged revenues is also exceptionally strong due
to the competitive position of the municipal enterprise or to the nature of the
revenues. Basic security provisions (including rate covenant, earnings test for
issuance of additional bonds, debt service reserve requirements) are rigorous.
There is evidence of superior management.


                                      -86-
<PAGE>   247
    AA - High Grade - Bonds in this group have a very strong capacity to pay
interest and repay principal and differ from the highest rated debt only in
small degree.

    A - Good Grade - Bonds in this category have a strong capacity to pay
interest and repay principal, although they are somewhat more susceptible to the
adverse effects of changes in circumstances and economic conditions than bonds
in higher rated categories. Regarding municipal bonds, the rating differs from
the two higher ratings because:

    General Obligation Bonds - There is some weakness, either in the local
economic base, in debt burden, in the balance between revenues and expenditures
or in quality of management. Under certain adverse circumstances, any one such
weakness might impair the ability of the issuer to meet debt obligations at some
future date.

    Revenue Bonds - Debt service coverage is good, but not exceptional.
Stability of the pledged revenues could show some variations because of
increased competition or economic influences on revenues. Basic security
provisions, while satisfactory, are less stringent. Management performance
appears adequate.

    BBB - Medium Grade - Bonds in this group are regarded as having an adequate
capacity to pay interest and repay principal. Whereas they normally exhibit
adequate protection parameters, adverse economic conditions or changing
circumstances are more likely to lead to a weakened capacity to pay interest and
repay principal for bonds in this category than for bonds in higher rated
categories.

    General Obligation Bonds - Under certain adverse conditions, several of the
above factors could contribute to a lesser capacity for payment of debt service.
The difference between A and BBB ratings is that the latter shows more than one
fundamental weakness, or one very substantial fundamental weakness, whereas the
former shows only one deficiency among the factors considered.

    Revenue Bonds - Debt coverage is only fair. Stability of the pledged
revenues could show substantial variations, with the revenue flow possibly being
subject to erosion over time. Basic security provisions are no more than
adequate. Management performance could be stronger.

    BB, B, CCC, CC and C - Bonds rated BB, B, CCC, CC and C are regarded, on
balance, as predominantly speculative with respect to capacity to pay interest
and repay principal in accordance with the terms of the obligation. BB indicates
the least degree of speculation and C the highest degree of speculation. While
such bonds will likely have some quality and protective characteristics, these
are outweighed by large uncertainties or major risk exposure to adverse
conditions.

    D - Bonds rated D are in default, or the obligor has filed for bankruptcy.
The D rating is issued when interest or principal payments are not made on the
date due, even if the applicable grace


                                      -87-
<PAGE>   248
period has not expired, unless S&P believes that such payments will be made
during such grace period.

    S&P's letter ratings may be modified by the addition of a plus or a minus
sign, which is used to show relative standing within the major rating
categories, except in the AAA-Prime Grade category.

DESCRIPTION OF S&P MUNICIPAL NOTE RATINGS

    Municipal notes with maturities of three years or less are usually given
note ratings (designated SP-1, -2 or -3) to distinguish more clearly the credit
quality of notes as compared to bonds. Notes rated SP-1 have a strong capacity
to pay principal and interest. Those issues determined to possess a very strong
capacity to pay debt service are given the designation of SP-1+. Notes rated
SP-2 have a satisfactory capacity to pay principal and interest, with some
vulnerability to adverse financial and economic changes over the term of the
notes.

DESCRIPTION OF MOODY'S MUNICIPAL BOND RATINGS

    Aaa: Bonds which are rated Aaa are judged to be of the best quality. They
carry the smallest degree of investment risk and are generally referred to as
"gilt-edged." Interest payments are protected by a large or by an exceptionally
stable margin and principal is secure. While the various protective elements are
likely to change, such changes as can be visualized are most unlikely to impair
the fundamentally strong position of such issues.

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

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

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

    Ba: Bonds which are rated Ba are judged to have speculative elements; their
future cannot be considered as well assured. Often the protection of interest
and principal payments may be very


                                      -88-
<PAGE>   249
moderate and thereby not well safeguarded during both good and bad times over
the future. Uncertainty of position characterizes bonds in this class.

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

    Moody's applies the numerical modifiers 1, 2 and 3 in each generic rating
classification from Aa through B. The modifier 1 indicates that the security
ranks in the higher end of its generic rating category; the modifier 2 indicates
a mid-range ranking; and the modifier 3 indicates that the issuer ranks in the
lower end of its generic rating category.

DESCRIPTION OF MOODY'S MUNICIPAL NOTE RATINGS

    Moody's ratings for state and municipal notes and other short-term loans are
designated Moody's Investment Grade (MIG) and for variable rate demand
obligations are designated Variable Moody's Investment Grade (VMIG). This
distinction recognizes the differences between short-term credit risk and
long-term risk. Loans bearing the designation MIG 1/VMIG 1 are of the best
quality, enjoying strong protection from established cash flows of funds for
their servicing, from superior liquidity support, or from established and
broad-based access to the market for refinancing, or both. Loans bearing the
designation of MIG 2/VMIG 2 are of high quality, with margins of protection
ample, although not as large as the preceding group. Loans bearing the
designation MIG 3/VMIG 3 are of favorable quality, with all security elements
accounted for but lacking the undeniable strength of the preceding grades.
Liquidity and cash flow protection may be narrow and market access for
refinancing is likely to be less well established. Loans bearing the designation
MIG 4/VMIG 4 are of adequate quality. Protection commonly regarded as required
of an investment security is present and although not distinctly or
predominantly speculative, there is specific risk.

DESCRIPTION OF S&P COMMERCIAL PAPER RATINGS

    Commercial paper rated A-1 by S&P indicates that the degree of safety
regarding timely payments is strong. Those issues determined to possess
extremely strong safety characteristics are denoted A-1+. Capacity for timely
payment on commercial paper rated A-2 is satisfactory, but the relative degree
of safety is not as high as for issues designated A-1.

DESCRIPTION OF MOODY'S COMMERCIAL PAPER RATINGS

    The rating Prime-1 is the highest commercial paper rating assigned by
Moody's. Issuers rated Prime-1 (or related supporting institutions) are
considered to have a superior capacity for repayment of short-term promissory
obligations. Issuers rated Prime-2 (or related supporting institutions) are
considered to have a strong capacity for repayment of short-term promissory
obligations. This will normally be evidenced by many of the characteristics of
issuers rated Prime-
                                      -89-
<PAGE>   250
1 but to a lesser degree. Earnings trends and coverage ratios, while sound, will
be more subject to variation. Capitalization characteristics, while still
appropriate, may be more affected by external conditions. Ample alternative
liquidity is maintained.

DESCRIPTION OF DUFF'S COMMERCIAL PAPER RATINGS

    Paper rated Duff-1 is regarded as having very high certainty of timely
payment with excellent liquidity factors which are supported by good fundamental
protection factors. Risk factors are minor. Ratings of Duff-1 are further
refined by the gradations of "1+" and "1-". Issues rated Duff-1+ have the
highest certainty of timely payment, outstanding short term liquidity, and
safety just below risk-free U.S. Treasury short-term obligations. Issues rated
Duff- 1- have high certainty of timely payment, strong liquidity factors
supported by good fundamental protection factors, and small risk factors. Paper
rated Duff-2 is regarded as having good certainty of timely payment, good access
to capital markets and sound liquidity factors and company fundamentals. Risk
factors are small.

DESCRIPTION OF FITCH'S COMMERCIAL PAPER RATINGS

    The rating F-1+ (Exceptionally Strong Credit Quality) is the highest
commercial rating assigned by Fitch and is assigned to issues regarded as having
the strongest degree of assurance for timely payment. Paper rated F-1 (Very
Strong Credit Quality) is regarded as having an assurance of timely payment only
slightly less in degree than issues rated F-1+. The rating F-2 (Good Credit
Quality) reflects an assurance of timely payment, but the margin of safety is
not as great as for issues assigned F-1+ or F-1 ratings.

                                      -90-
<PAGE>   251
                                   WM TRUST I
                                  WM TRUST II
                    WM STRATEGIC ASSET MANAGEMENT PORTFOLIOS
                                   FORM N-1A

                                     PART C
                               OTHER INFORMATION

Item 23.  Exhibits

     (a)  Agreement and Declaration of Trust

          (1) WM Trust I

               (A)  Form of Amended and Restated Agreement and Declaration of 
                    Trust dated as of September 19, 1997 -- incorporated by 
                    reference to Post-Effective Amendment ("PEA") No. 67 to the 
                    Registrant's Registration Statement, filed with the SEC on 
                    March 27, 1998.

               (B)  Amendment No. 1 to Amended and Restated Agreement and 
                    Declaration of Trust dated March 20, 1998 -- incorporated 
                    by reference to PEA No. 74 to the Registrant's Registration 
                    Statement.

               (C)  Amendment No. 2 to Amended and Restated Agreement and 
                    Declaration of Trust dated March 20, 1998 is incorporated 
                    by reference to PEA No. 74 to the Registrant's Registration 
                    Statement.

          (2) WM Trust II

               (A)  Master Trust Agreement of the Registrant dated February 22, 
                    1989 -- incorporated by reference to PEA No. 26 to the 
                    Registrant's Registration Statement, filed with the SEC on 
                    August 28, 1997.

               (B)  Amendment No. 1 to Master Trust Agreement, dated May 10, 
                    1989 -- incorporated by reference to PEA No. 26 to the 
                    Registrant's Registration Statement.

               (C)  Amendment No. 2 to Master Trust Agreement, dated May 22, 
                    1989 -- incorporated by reference to PEA No. 26 to the 
                    Registrant's Registration Statement.
<PAGE>   252
          (D)  Amendment No. 3 to Master Trust Agreement, dated May 24, 1989 --
               incorporated by reference to PEA No. 26 to the Registrant's
               Registration Statement.

          (E)  Amendment No. 4 to Master Trust Agreement, dated May 7, 1990 --
               incorporated by reference to PEA No. 26 to the Registrant's
               Registration Statement.

          (F)  Amendment No. 5 to Master Trust Agreement, dated December 4, 1991
               -- incorporated by reference to PEA No. 26 to the Registrant's
               Registration Statement.

          (G)  Amendment No. 6 to Master Trust Agreement, dated January 30,
               1992 -- incorporated by reference to PEA No. 26 to the
               Registrant's Registration Statement.

          (H)  Amendment No. 7 to Master Trust Agreement, dated September 12,
               1992 -- incorporated by reference to PEA No. 26 to the
               Registrant's Registration Statement.

          (I)  Amendment No. 8 to Master Trust Agreement, dated September 22,
               1993 -- incorporated by reference to PEA No. 26 to the
               Registrant's Registration Statement.

          (J)  Amendment No. 9 to Master Trust Agreement, dated March 13, 1994
               -- incorporated by reference to PEA No. 26 to the Registrant's
               Registration Statement.

          (K)  Amendment No. 10 to Master Trust Agreement, dated January 20,
               1995 -- incorporated by reference to PEA No. 26 to the
               Registrant's Registration Statement.

          (L)  Amendment No. 11 to Master Trust Agreement, dated July 19, 1996
               -- incorporated by reference to PEA No. 28 to the Registrant's
               Registration Statement, filed with the SEC on March 27, 1998.

          (M)  Amendment No. 12 to Master Trust Agreement, dated March 20, 1998
               -- incorporated by reference to PEA No. 28 to the Registrant's
               Registration Statement.


                                      -2-
<PAGE>   253
     (3)  WM Strategic Asset Management Portfolios

          (A)  Amended and Restated Agreement and Declaration of Trust dated
               July 19, 1996 -- incorporated by reference to Pre-Effective
               Amendment No. 2, filed with the SEC on July 22, 1996.

          (B)  Amendment No. 1 to Amended and Restated Agreement and Declaration
               of Trust dated March 20, 1998 -- incorporated by reference to PEA
               No. 4, filed with the SEC on March 27, 1998.

(b)  Bylaws

     (1)  WM Trust I -- incorporated by reference to PEA No. 67 to the
          Registrant's Registration Statement.

     (2)  WM Trust II -- incorporated by reference to PEA No. 26 to the
          Registrant's Registration Statement.

     (3)  WM Strategic Asset Management Portfolios -- incorporated by reference
          to the Registrant's initial Registration Statement, filed with the
          SEC on March 27, 1996.

(c)  Instruments defining the Rights of Shareholders
     See (a) and (b) above.

(d)  Investment Advisory Contracts

     (1)  WM Trust I -- Investment Management Agreement dated March 20, 1998 --
          incorporated by reference to PEA No. 74 to the Registrant's
          Registration Statement, filed with the SEC on March 27, 1998.


     (2)  WM Trust II

          (A)  Investment Management Agreement dated January 30, 1998 with
               respect to the Short Term High Quality Bond, California Money and
               Target Maturity 2002 Funds -- incorporated by reference to PEA
               No. 28 to the Registrant's Registration Statement.

          (B)  Investment Management Agreement dated March 20, 1998 with respect
               to the Growth, Emerging Growth, International Growth, California
               Municipal, California Insured Intermediate Municipal and Florida
               Insured Municipal Funds -- incorporated by reference to PEA No.
               28 to the Registrant's Registration Statement.

                                      -3-
<PAGE>   254
          (C)  Investment Sub-Advisory Agreement dated March 20, 1998 with
               respect to the California Municipal and California Insured
               Intermediate Municipal Funds - incorporated by reference to PEA
               No. 28 to the Registrant's Registration Statement.

     (3)  WM Strategic Asset Management Portfolios - Investment Management
          Agreement dated March 20, 1998 - incorporated by reference to PEA No.
          4 to the Registrant's Registration Statement, filed with the SEC on
          March 27, 1998.

(e)  Underwriting Contracts.

     (1)  WM Trust I

          (A)  Distribution Contract dated March 20, 1998 - incorporated by
               reference to PEA No. 74 to the Registrant's Registration
               Statement.

          (B)  Form of Selected Dealer Agreement - incorporated by reference to
               PEA No. 67 to the Registrant's Registration Statement.

     (2)  WM Trust II - Distribution Agreement dated March 20, 1998 -
          incorporated by reference to PEA No. 28 to the Registrant's
          Registration Statement.

     (3)  WM Strategic Asset Management Portfolios - Distribution Contract dated
          March 20, 1998 - incorporated by reference to PEA No. 4 to the
          Registrant's Registration Statement.

(f)  Bonus or Profit Sharing Plans Not Applicable.

(g)  Custodian Agreements

     (1)  WM Trust I - Custody Agreement dated March 20, 1998 - incorporated by
          reference to PEA No. 74 to the Registrant's Registration Statement.

     (2)  WM Trust II - Custody Agreement dated March 20, 1998 - incorporated by
          reference to PEA No. 28 to the Registrant's Registration Statement.

     (3)  WM Strategic Asset Management Portfolios - Custody Agreement dated
          March 20, 1998 - incorporated by reference to PEA No. 4 to the
          Registrant's Registration Statement.


                                      -4-










<PAGE>   255
     (h)  Other Material Contracts
          
          (1)  WM Trust I -
          
               (A)  Shareholders Service Contract - incorporated by reference to
                    PEA No. 67 to the Registrant's Registration Statement.

               (B)  Transfer Agent Contract dated March 20, 1998 - incorporated
                    by reference to PEA No. 74 to the Registrant's Registration
                    Statement.

          (2)  WM Trust II - Transfer Agency Agreement dated March 20, 1998 -
               incorporated by reference to PEA No. 28 to the Registrant's      
               Registration Statement.

          (3)  WM Strategic Asset Management Portfolios

               (a)  Administration Agreement dated March 20, 1998 - incorporated
                    by reference to PEA No. 4 to the Registrant's Registration
                    Statement.

               (b)  Transfer Agency Agreement dated March 20, 1998 -
                    incorporated by reference to PEA No. 4 to the Registrant's
                    Registration Statement.

     (i)  Legal Opinion

          (1)  WM Trust I - Opinion and Consent of Counsel - incorporated by
               reference to PEA No. 74 to the Registrant's Registration 
               Statement.

          (2)  WM Trust II - Consent and Opinion of Counsel dated June 20, 1998
               - incorporated by reference to PEA No. 26 to the Registrant's 
               Registration Statement.

          (3)  WM Strategic Asset Management Portfolios - Opinion and Consent of
               Counsel incorporated by reference to Pre-Effective Amendment
               No. 2 to the Registrant's Registration Statement filed with the
               SEC on July 22, 1996.

     (j)  Other Opinions

          (1)  WM Trust I

                                      -5-
<PAGE>   256

          (A)  Consent of Deloitte & Touche LLP

          (B)  Consent of LeMaster & Daniels LLC

     (2)  WM Trust II

          (A)  Consent of Deloitte & Touche LLP

          (B)  Consent of PricewaterhouseCoopers LLP

     (3)  WM Strategic Asset Management Portfolios

          (A)  Consent of Deloitte & Touche LLP

          (B)  Consent of PricewaterhouseCoopers LLP

(k)  Omitted Financial Statements Not Applicable.

(l)  Initial Capital Agreements

     (1)  WM Trust I - Not applicable.

     (2)  WM Trust II - Not applicable.

     (3)  WM Strategic Asset Management Portfolios - Purchase Agreement
          relating to the Income, Flexible Income, Balanced, Conservative Growth
          and Strategic Growth Portfolios -- incorporated by reference to
          PEA No. 1, filed with the SEC on January 6, 1997.

(m)  12b-1 Plan

     (1)  WM Trust I

          (A)  Class A Distribution Plan dated March 20, 1998 -- incorporated
               by reference to PEA No. 74 to the Registrant's Registration
               Statement.

          (B)  Class B Distribution Plan dated March 24, 1998 -- incorporated
               by reference to PEA No. 74 to the Registrant's Registration
               Statement.


                                      -6-
<PAGE>   257
          (C)  Class S Distribution Plan dated March 24, 1998 - incorporated by
               reference to PEA No. 74 to the Registrant's Registration
               Statement.

     (2)  WM Trust II

          (A)  Class A Distribution Plan, dated July 7, 1989 and amended July 1,
               1995 - incorporated by reference to PEA No. 24 to the
               Registrant's Registration Statement filed with the SEC on October
               30, 1996.

          (B)  Class B Distribution Plan, dated March 24, 1998 - incorporated by
               reference to PEA No. 28 to the Registrant's Registration
               Statement.

          (C)  Class S Distribution Plan, dated March 24, 1998 - incorporated by
               reference to PEA No. 28 to the Registrant's Registration
               Statement.

     (3)  WM Strategic Asset Management Portfolios

          (A)  Class A Distribution Plan, dated May 21, 1996 - incorporated by
               reference to PEA No. 2 to the Registrant's Registration Statement
               as filed with the SEC on August 29, 1997.

          (B)  Class B Distribution Plan, dated March 24, 1998 - incorporated by
               reference to PEA No. 4 to the Registrant's Registration
               Statement.

(n)  Financial Data Schedules for the year ended October 31, 1998 - [To be filed
     by amendment].

(o)  Rule 18f-3 Plan

     (1)  WM Trust I - Rule 18f-3 Multiple Class Plan - incorporated by
          reference to PEA No. 74 to the Registrant's Registration Statement, 
          filed with the SEC on March 27, 1998.

     (2)  WM Trust II - Rule 18f-3 Multiple Class Plan dated June 13, 1995 -
          incorporated by reference to PEA No. 27 to the Registrant's
          Registration Statement, filed with the SEC on October 30, 1997.


                                      -7-

<PAGE>   258
           (3)   WM Strategic Asset Management Portfolios - Rule 18f-3 Multiple
                 Class Plan dated June 13, 1995 -- incorporated by reference to
                 Pre-Effective Amendment No. 1 to the Registrant's Registration
                 Statement, filed with the SEC on June 21, 1996.

Item 24.   Persons Controlled by or Under Common Control with Registrant.

           Not applicable.

Item 25.   Indemnification.

           (a) WM Trust I - Reference is made to Article VIII, Section 1 of the
Amended and Restated Agreement and Declaration of Trust (the "Agreement and
Declaration of Trust") of the Registrant.

           Insofar as indemnification for liability arising under the Securities
Act of 1933, as amended (the "1933 Act"), may be permitted to Trustees, officers
and controlling persons of Registrant pursuant to the foregoing provisions, or
otherwise, Registrant has been advised that, in the opinion of the Securities
and Exchange Commission, such indemnification is against public policy as
expressed in the 1933 Act and is, therefore, unenforceable. In the event that a
claim for indemnification against such liabilities (other than the payment by
Registrant of expenses incurred or paid by a Trustee, officer or controlling
person of Registrant in the successful defense of any action, suit or
proceeding) is asserted by such Trustee, officer or controlling person in
connection with the securities being registered, Registrant will, unless in the
opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the 1933 Act and
will be governed by the final adjudication of such issue.

           (b) WM Trust II - Under Section 6.4 of Registrant's Master Trust
Agreement, as amended, any past or present Trustee or officer of Registrant
(including persons who serve at Registrant's request as directors, officers or
trustees of another organization in which Registrant has any interest as a
shareholder, creditor or otherwise (hereinafter referred to as a "Covered
Person"), is indemnified to the fullest extent permitted by law against
liability and all expenses reasonably incurred by him with any action, suit or
proceeding to which he may be a party or otherwise involved by reason of his
being or having been a Covered Person. This provision does not authorize
indemnification when it is determined, in the manner specified in the Master
Trust Agreement, that a Covered Person has not acted in good faith in the
reasonable belief that his actions were in or not opposed to the best interests
of Registrant. Moreover, this provision does not authorize indemnification when
it is determined, in the manner specified in the Master Trust Agreement, that
the Covered Person would otherwise be


                                      -8-
<PAGE>   259
liable to Registrant or its shareholders by reason of willful misfeasance, bad
faith, gross negligence or reckless disregard of his duties. Expenses may be
paid by Registrant in advance of the final disposition of any action, suit or
proceeding upon receipt of an undertaking by a Covered Person to repay those
expenses to Registrant in the event that it is ultimately determined that
indemnification of the expenses is not authorized under the Master Trust
Agreement and the Covered Person either provides security for such undertaking
or insures Registrant against losses from such advances or the disinterested
Trustees or independent legal counsel determines, in the manner specified in the
Master Trust Agreement, that there is reason to believe the Covered Person will
be found to be entitled to indemnification.

     Insofar as indemnification for liability arising under the Securities Act
of 1933, as amended (the "1933 Act"), may be permitted to Trustees, officers and
controlling persons of Registrant pursuant to the foregoing provisions, or
otherwise, Registrant has been advised that, in the opinion of the Securities
and Exchange Commission, such indemnification is against public policy as
expressed in the 1933 Act and is, therefore, unenforceable. In the event that a
claim for indemnification against such liabilities (other than the payment by
Registrant of expenses incurred or paid by a Trustee, officer or controlling
person of Registrant in the successful defense of any action, suit or
proceeding) is asserted by such Trustee, officer or controlling person in
connection with the securities being registered, Registrant will, unless in the
opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the 1933 Act and
will be governed by the final adjudication of such issue.

     (c)  WM Strategic Asset Management Portfolios - Under Section 8.1 of
Registrant's Declaration of Trust, any past or present Trustee or officer of
Registrant (including persons who serve at Registrant's request as directors,
officers or trustees of another organization in which Registrant has any
interest as a shareholder, creditor or otherwise (hereinafter referred to as a
"Covered Person"), is indemnified to the fullest extent permitted by law against
liability and all expenses reasonably incurred by him in connection with any
action, suit or proceeding to which he may be a party or otherwise involved by
reason of his being or having been a Covered Person. This provision does not
authorize indemnification when it is determined, in the manner specified in the
Master Trust Agreement, that a Covered Person has not acted in good faith in the
reasonable belief that his actions were in or not opposed to the best interests
of Registrant. Moreover, this provision does not authorize indemnification when
it is determined, in the manner specified in the Declaration of Trust, that the
Covered Person would otherwise be liable to Registrant or its shareholders by
reason of willful misfeasance, bad faith, gross negligence or reckless disregard
of his duties. Expenses may be paid by Registrant in advance of the final
disposition of any action, suit or proceeding upon receipt of an undertaking by
a Covered Person to repay those expenses to Registrant in the event that it is
ultimately determined that indemnification of the expenses is not authorized
under the Declaration of Trust and the Covered Person either provides security
for such undertaking or insures Registrant against losses from such advances or
the disinterested Trustees or

                                      -9-
<PAGE>   260
independent legal counsel determines, in the manner specified in the 
Declaration of Trust, that there is reason to believe the Covered Person will 
be found to be entitled to indemnification.

     Insofar as indemnification for liability arising under the Securities Act 
of 1933, as amended (the "1933 Act"), may be permitted to Trustees, officers 
and controlling persons of Registrant pursuant to the foregoing provisions, or 
otherwise, Registrant has been advised that, in the opinion of the Securities 
and Exchange Commission, such indemnification is against public policy as 
expressed in the 1933 Act and is, therefore, unenforceable. In the event that a 
claim for indemnification against such liabilities (other than the payment by 
Registrant of expenses incurred or paid by a Trustee, officer or controlling 
person of Registrant in the successful defense of any action, suit or 
proceeding) is asserted by such Trustee, officer or controlling person in 
connection with the securities being registered, Registrant will, unless in the 
opinion of its counsel the matter has been settled by controlling precedent, 
submit to a court of appropriate jurisdiction the question whether such 
indemnification by it is against public policy as expressed in the 1933 Act and 
will be governed by the final adjudication of such issue.

Item 26.  Business and Other Connections of Investment Advisor.

     (a)  WM Advisors, Inc.

<TABLE>
<CAPTION>

Directors                               Past Two Fiscal Years
- ---------                               ---------------------
<S>                                     <C>
Monte D. Calvin                         WM Shareholder Services, Inc.
First Vice President, Director          601 West Main Ave., Suite 300, Spokane, WA 98201

Treasurer, Director                     April 1997 - present
                                        WM Advisors, Inc.
                                        1201 Third Ave., Suite 1400, Seattle, WA 98101

Vice President, Treasurer               July 1997 - present
Director                                WM Funds Distributor, Inc.
                                        601 West Main Ave., Suite 300, Spokane, WA 98201

Craig S. Davis                          July 1997 - present
Director                                WM Funds Distributor, Inc.
                                        601 West Main Ave., Suite 300, Spokane, WA 98201

Director                                WM Shareholder Services, Inc.
                                        601 West Main Ave., Suite 300, Spokane, WA 98201

Director                                April 1997 - present
                                        WM Advisors, Inc.
                                        1201 Third Ave., Suite 1400, Seattle, WA 98101
</TABLE>

                                      -10-
<PAGE>   261
Executive Vice President    December - present
                            Washington Mutual, Inc.
                            1201 Third Ave., Seattle, WA 98101

Chairman                    January 1996 - July 1997
                            ASB Financial Services, Irvine, CA

J. Pamela Dawson            July 1997 - present
Director                    WM Funds Distributor, Inc.
                            601 West Main Ave., Suite 300, Spokane, WA 98201

Director                    WM Shareholder Services, Inc.
                            601 West Main Ave., Suite 300, Spokane, WA 98201

Director                    April 1997 - present
                            WM Advisors, Inc.
                            1201 Third Ave., Suite 1400, Seattle, WA 98101

President                   March 1997 - present
                            WM Financial Services
                            1201 Third Ave., 7th Floor, Seattle, WA 98101

President                   December 1996 - July 1997
                            ASB Financial Services, Irvine, CA

Senior Vice President/      November 1996 - December 1996
Regional Manager            Wells Fargo Securities/First Interstate, Houston, TX

Kerry K. Killinger          WM Advisors, Inc.
Director                    1201 Third Ave., Suite 1400, Seattle, WA 98101

CEO, Chairman, Director     Washington Mutual Bank
                            1201 Third Ave., Seattle, WA 98101

Director                    July 1997 - present
                            WM Funds Distributor, Inc.
                            601 West Main Ave., Suite 300, Spokane, WA 98201

Director                    WM Shareholder Services, Inc.
                            601 West Main Ave., Suite 300, Spokane, WA 98201

Philip M. Foreman           WM Advisors, Inc.
Vice President              1201 Third Ave., Suite 1400, Seattle, WA 98101

Sharon L. Howells           WM Advisors, Inc.
First Vice President,       1201 Third Ave., Suite 1400, Seattle, WA 98101
Corporate Secretary


                                      -11-
<PAGE>   262
Vice President,          July 1997 - present
Corporate Secretary      WM Funds Distributor, Inc.
                         601 West Main Ave., Suite 300, Spokane, WA 98201

Corporate Secretary      WM Shareholder Services, Inc.
                         601 West Main Ave., Suite 300, Spokane, WA 98201

Jeffrey D. Huffman       WM Advisors, Inc.
Vice President           1201 Third Ave., Suite 1400, Seattle, WA 98101

B. Joel King             March 1998 - present
Vice President           WM Advisors, Inc.
                         1201 Third Ave., Suite 1400, Seattle, WA 98101

Vice President           January 1996 - February 1998
                         Bennington Capital Management
                         1420 Fifth Ave., Seattle, WA 98101

William G. Papesh        WM Advisors, Inc.
President, Director      1201 Third Ave., Suite 1400, Seattle, WA 98101

President, Director      WM Shareholder Services, Inc.
                         601 West Main Ave., Suite 300, Spokane, WA 98201

Director                 WM Insurance Services
                         1201 Third Ave., Seattle, WA 98101

President, Director      WM Group of Funds
                         601 West Main Ave., Suite 300, Spokane, WA 98201

President, Director      July 1997 - present
                         WM Funds Distributor, Inc.
                         601 West Main Ave., Suite 300, Spokane, WA 98201

Brian L. Placzek         WM Advisors, Inc.
Vice President           1201 Third Ave., Suite 1400, Seattle, WA 98101

Gary J. Pokrzywinski     WM Advisors, Inc.
Vice President           1201 Third Ave., Suite 1400, Seattle, WA 98101

Audrey S. Quaye          February 1996 - present
Vice President           WM Advisors, Inc.
                         1201 Third Ave., Suite 1400, Seattle, WA 98101

Credit Analyst           January 1996 - February 1996
                         Tandem Computers, Cupertino, CA



                                      -12-
<PAGE>   263
Stephen C. Scott              March 1998 - present
Vice President                WM Advisors, Inc.
                              1201 Third Ave., Suite 1400, Seattle, WA 98101

Senior Investment Advisor     Sierra Investment Services Corporation
                              9301 Corbin Ave., Northridge, CA 91324

President                     Sierra Investment Services Corporation
                              9301 Corbin Ave., Northridge, CA 91324

David W. Simpson              WM Advisors, Inc.
Vice President                1201 Third Ave., Suite 1400, Seattle, WA 98101

Linda C. Walk                 December 1997 - present
Vice President                WM Advisors, Inc.
                              1201 Third Ave., Suite 1400, Seattle, WA 98101

                              November 1996 - November 1997
                              Laid Norton Trust Company
                              Norton Building, Suite 1600, Seattle, WA 98104

                              January 1996 - July 1996
                              Ernst & Young LLP
                              2001 Market Street, 41st Floor,
                                 Philadelphia, PA 19103

     (b)  Van Kampen Management, Inc.

          Van Kampen Management, Inc. ("Van Kampen"), is a wholly-owned 
subsidiary of VK/AC Holding, Inc. VK/AC Holding, Inc. is a wholly-owned 
subsidiary of Morgan Stanley, Dean Witter, Discover & Co. Van Kampen provides 
investment advice to a wide variety of individual, institutional and investment 
company clients.

          The list required by this Item 28 of officers and directors of Van 
Kampen, together with information as to any other business, profession, 
vocation of employment of a substantial nature engaged in by such officers and 
directors during the past two years, is incorporated by reference to Schedules 
A and D of Form ADV filed by Van Kampen pursuant to the Advisers Act (SEC File 
No. 801-40808).

     (c)  Janus Capital Corporation

          Janus Capital Corporation ("Janus") is an investment advisor 
registered under the Advisers Act, and acts as investment advisor for 
registered investment companies, foreign investment companies and for 
individual, charitable, corporate and retirement accounts. Janus,


                                      -13-

<PAGE>   264
and its affiliates, provide a variety of trust, investment management and 
investment advisory services.

     The list required by this Item 28 of officers and directors of Janus,
together with information as to any other business, profession, vocation or
employment of a substantial nature engaged in by such officers and directors
during the past two years, is incorporated by reference to Schedules A and D of
Form ADV, filed by Janus pursuant to the Advisers Act (SEC File No. 801-13991).

     (d)  Warburg, Pincus Asset Management, Inc.

          Warburg, Pincus Asset Management, Inc. ("Warburg") is an investment 
advisor registered under the Advisers Act, and acts as investment advisor for 
registered investment companies and foreign investment companies. Warburg 
provides investment services to investment endowment funds, foundations and 
other institutions and individuals.

          The list required by this Item 28 of officers and directors of 
Warburg, together with information as to any other business, profession, 
vocation or employment of a substantial nature engaged in by such officers and 
directors during the past two years, is incorporated by reference to Schedules 
A and D of Form ADV, filed by Warburg, pursuant to the Advisers Act (SEC File 
No. 801-07321).

Item 27.  Principal Underwriters.

     (a)  The principal underwriter for each Registrant is WM Funds Distributor,
          Inc.

     (b)  The Directors and Officers of WM Funds Distributor, Inc., their
          positions with WM Funds Distributor, Inc. and the WM Group of Funds
          are set forth in the table below. The principal business address of WM
          Funds Distributor, Inc. and each of its directors and officers is 1201
          Third Avenue, Suite 1400, Seattle, Washington 98101.

<TABLE>
<CAPTION>

         Name and               Position And          Positions And 
    Principal Business          Offices With          Offices With
         Address                 Underwriter            Registrant
    ------------------          ------------          -------------
    <S>                         <C>                   <C>
    William G. Papesh           President             President
    
    Sandra A. Cavanaugh         First Vice President  Senior Vice President

    Monte D. Calvin             Vice President,       Chief Financial Officer,
                                Treasurer             Senior Vice President
</TABLE>


                                      -14-
<PAGE>   265
Sharon L. Howells             Vice President,          Senior Vice President
                            Corporate Secretary


     (c)  Not applicable.

Item 28.  Location of Accounts and Records.

     All accounts, books and other documents required to be maintained by
Section 31(a) of the Investment Company Act of 1940 and the rules thereunder
will be maintained at the offices of the Registrants, at 1201 Third Avenue,
Suite 1400, Seattle, WA 98101, the offices of the Registrants' custodian, Boston
Safe Deposit and Trust Company, One Boston Place, Boston, MA 02108 and the
offices of the Registrants' sub-advisors, Van Kampen Management, Inc., One
Parkview Plaza, Oakbrook Terrace, Illinois 60181, Janus Capital Corporation, 100
Fillmore Street, Suite 300, Denver, Colorado 80206, and Warburg Pincus Asset
Management, Inc., 466 Lexington Avenue, New York, New York 10017-3147.

Item 29.  Management Services.

     None of the Registrants is a party to any management related contract, 
other than as set forth in the Prospectus.

Item 30.  Undertakings.

     (a)  Each Registrant undertakes to furnish each person to whom a prospectus
          is delivered with a copy of the Registrant's latest annual report to
          shareholders upon request and without charge.

     (b)  Each of the Registrants has undertaken to call a meeting of its
          shareholders for the purpose of voting upon the question of removal of
          a trustee or trustees of the Registrant when requested to do so by the
          holders of at least 10% of the Registrant's outstanding shares. Each
          Registrant has undertaken further, in connection with the meeting, to
          comply with the provisions of Section 16(c) of the Investment Company
          Act of 1940, as amended, relating to communications with the
          shareholders of certain common-law trusts.


                                      -15-
<PAGE>   266
Exhibit Index

(J)  Consents of Independent Accountants dated December 30, 1998.











                                      -16-

<PAGE>   267
                                   SIGNATURES


     Pursuant to the requirements of the Securities Act of 1933, the Registrant 
certifies that it has duly caused this Registration Statement to be signed on 
its behalf by the undersigned, thereunto duly authorized in the City of Seattle 
in the State of Washington on the 24th day of December, 1998.

                                       WM TRUST I,
                                       WM TRUST II AND
                                       WM STRATEGIC ASSET
                                       MANAGEMENT PORTFOLIOS

                                       /s/ WILLIAM G. PAPESH
                                       ----------------------------------------
                                       William G. Papesh, President

Pursuant to the requirement of the Securities Act of 1933, this Registration 
Statement has been signed below by the following persons in the capacities and 
on the date indicated.

<TABLE>
<CAPTION>
Signature                      Title                           Date
- ---------                      -----                           ----
<S>                            <C>                             <C>

/s/ WILLIAM G. PAPESH          President and Trustee           December 24, 1998
- -----------------------
William G. Papesh


/s/ MONTE D. CALVIN            Chief Financial Officer         December 23, 1998
- -----------------------
Monte D. Calvin


/s/ DAVID E. ANDERSON*         Trustee                         December 24, 1998
- -----------------------
David E. Anderson


/s/ WAYNE L. ATTWOOD, M.D.*    Trustee                         December 24, 1998
- -----------------------
Wayne L. Attwood, M.D.


/s/ ARTHUR H. BERNSTEIN*       Trustee                         December 24, 1998
- -----------------------
Arthur H. Bernstein


/s/ KRISTIANNE BLAKE*          Trustee                         December 24, 1998
- -----------------------
Kristianne Blake
</TABLE>

                                      -17-
<PAGE>   268
<TABLE>
<CAPTION>

   Signature                      Title              Date
<S>                             <C>            <C>
EDMOND R. DAVIS*                Trustee        December 24, 1998
- -----------------------
Edmond R. Davis

JOHN W. ENGLISH*                Trustee        December 24, 1998
- -----------------------
John W. English

ANNE V. FARRELL*                Trustee        December 24, 1998
- -----------------------
Anne V. Farrell

MICHAEL K. MURPHY*              Trustee        December 24, 1998
- -----------------------
Michael K. Murphy

ALFRED E. OSBORNE, JR.*         Trustee        December 24, 1998
- -----------------------
Alfred E. Osborne, Jr.

DANIEL PAVELICH*                Trustee        December 24, 1998
- -----------------------
Daniel Pavelich

JAY ROCKEY*                     Trustee        December 24, 1998
- -----------------------
Jay Rockey

RICHARD C. YANCEY*              Trustee        December 24, 1998
- -----------------------
Richard C. Yancey
</TABLE>

* Pursuant to Powers of Attorney previously filed.


                                      -18-

<PAGE>   1


INDEPENDENT AUDITORS' CONSENT


We consent to the incorporation by reference in Post-Effective Amendment No. 30
to Registration Statement No. 33-27489, Post-Effective Amendment No. 6 to
Registration Statement No. 333-01999, and Post-Effective Amendment No. 75 to 
Registration Statement No. 333-36941 on Form N-1A (collectively, the
"Registration Statements"), of our reports dated December 11, 1998, appearing
in the Annual Reports of WM Group of Funds for the periods ended October 31,
1998, and to the references to us under the heading "Financial Highlights" in
the Prospectuses and under the heading "Independent Auditors and Financial
Statements" in the Statements of Additional Information, which are parts of
such Registration Statements.


DELOITTE & TOUCHE LLP
San Francisco, California

December 30, 1998


<PAGE>   1
                       CONSENT OF INDEPENDENT ACCOUNTANTS

We hereby consent to the incorporation by reference in the Prospectus and the
Statement of Additional Information constituting parts of this Post-Effective
Amendment No. 30 to the registration statement on Form N-1A (the "Registration
Statement") of our report dated August 14, 1998, relating to the financial 
statements and financial highlights appearing in the June 30, 1998 Annual 
Report to Shareholders of WM Trust II (formerly known as Sierra Trust Funds), 
which financial statements and financial highlights are also incorporated by 
reference into the Registration Statement. We also consent to the references to 
us under the heading "Financial Highlights" in the Prospectus and under the 
heading "Independent Accountants and Financial Statements" in the Statement of 
Additional Information.

PricewaterhouseCoopers LLP
Boston, Massachusetts
December 29, 1998




© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission