MUNDER FUNDS INC
497, 2000-06-27
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                THIS SUPPLEMENT SUPERCEDES ALL PRIOR SUPPLEMENTS

                                The Munder Funds

                         Supplement Dated June 27, 2000

                      to Prospectus Dated October 26, 1999

                               Class K Shares of:

Munder Balanced Fund, Munder Equity Income Fund (formerly Munder Growth & Income
     Fund), Munder Growth Opportunities Fund, Munder Index 500 Fund, Munder
  International Equity Fund, Munder Micro-Cap Equity Fund, Munder Multi-Season
 Growth Fund, Munder Real Estate Equity Investment Fund, Munder Small-Cap Value
  Fund, Munder Small Company Growth Fund, Munder Value Fund, Munder Framlington
  Emerging Markets Fund, Munder Framlington Healthcare Fund, Munder Framlington
   International Growth Fund, Munder Bond Fund, Munder Intermediate Bond Fund,
   Munder International Bond Fund, Munder U.S. Government Income Fund, Munder
     Michigan Tax-Free Bond Fund, Munder Tax-Free Bond Fund, Munder Tax-Free
Short-Intermediate Bond Fund, Munder Cash Investment Fund, Munder Tax-Free Money
              Market Fundand Munder U.S. Treasury Money Market Fund

                                CHANGE OF ADDRESS

The section  entitled  "Your  Investment-How  to Reach the Funds by mail" in the
prospectus is hereby deleted and replaced with the following:  The Munder Funds,
c/o PFPC Global Fund Services, P.O. Box 60428, King of Prussia, PA 19406-0428.

              CHANGE OF NAME FOR FIRST DATA INVESTOR SERVICES GROUP

The name of First Data Investor  Services  Group has changed to PFPC Global Fund
Services.

                              CLOSING OF VALUE FUND

         Shares of the Value Fund are no longer available.

                     CHANGE OF NAME FOR GROWTH & INCOME FUND

         The Board of Trustees of The Munder Funds Trust has changed the name of
the Growth & Income Fund to the Equity Income Fund.

           PORTFOLIO MANAGEMENT OF REAL ESTATE EQUITY INVESTMENT FUND

     Robert E. Crosby is manager of the Real Estate Equity  Investment Fund. Mr.
Crosby has managed the Fund since March 1998 and was the Fund's primary  analyst
from 1996-1998. Mr. Crosby has been with the Advisor since 1993, and also serves
as portfolio manager for separately managed institutional accounts.

         PORTFOLIO MANAGEMENT OF BOND FUND, INTERMEDIATE BOND FUND AND
                           U.S. GOVERNMENT INCOME FUND

     Anne K.  Kennedy  and Peter G.  Root  jointly  manage  the Bond  Fund,  the
Intermediate  Bond Fund and U.S.  Government  Income  Fund.  Ms.  Kennedy,  Vice
President  and  Director of Portfolio  Management  of the Advisor or of Old MCM,
Inc.  ("Old MCM"),  the  predecessor  to the Advisor since 1991, has managed the
Bond  Fund  and the U.S.  Government  Income  Fund  since  January  2000 and the
Intermediate  Bond Fund since March 1995.  Mr. Root,  Vice  President  and Chief
Investment  Officer of Fixed Income of the Advisor since March 1995, has managed
the  Bond  Fund and  Intermediate  Bond  Fund  since  January  2000 and the U.S.
Government Income Fund since March 1995. Mr. Root joined Old MCM in 1991.

<PAGE>

                 PORTFOLIO MANAGEMENT OF INTERNATIONAL BOND FUND

     Sharon E. Fayolle and Peter G. Root jointly manage the  International  Bond
Fund. Ms.  Fayolle,  Vice President and Director of Money Market Trading for the
Advisor or Old MCM,  has managed the Fund since 1996.  Prior to that she managed
an international  portfolio for Ford Motor Company. Mr. Root, Vice President and
Chief  Investment  Officer of Fixed Income of the Advisor since March 1995,  has
managed the Fund since January 2000. Mr. Root joined Old MCM in 1991.

             CHANGE OF INVESTMENT OBJECTIVE FOR SMALL-CAP VALUE FUND

         The Board of  Directors  of The Munder  Funds,  Inc.  has  changed  the
investment  objective  of  the  Small-Cap  Value  Fund  from  long-term  capital
appreciation,  with  income  as  a  secondary  objective  to  long-term  capital
appreciation.

            CHANGE OF INVESTMENT POLICY FOR SMALL COMPANY GROWTH FUND

         The  Board of  Trustees  of The  Munder  Funds  Trust has  changed  the
investment  policy of the Small  Company  Growth  Fund to  increase  the  market
capitalization of the issuers considered to be small-cap companies. Accordingly,
the first  paragraph  of the section  entitled  "Risk  Return  Summary-Principal
Investment  Strategies"  of the Small Company  Growth Fund in the  prospectus is
hereby deleted and replaced with the following:

     The Fund pursues its goal by investing,  under normal market conditions, at
least 65% of its assets in equity securities of small  capitalization  companies
with market  capitalizations  below $1.5 billion,  which is less than the market
capitalization of S&P 500 companies.

              PRINCIPAL INVESTMENT STRATEGIES OF BALANCED FUND AND
                       REAL ESTATE EQUITY INVESTMENT FUND

         The  section   entitled  "Risk  Return   Summary-Principal   Investment
Strategies" of the Balanced Fund in the prospectus is hereby  supplemented  with
the following:

                  Stocks   are  chosen  on  the  basis  of   above-average   and
         sustainable   earnings  growth,   financial   stability  or  attractive
         valuation using the advisor's  proprietary GARP (Growth at a Reasonable
         Price) style,  which focuses both growth prospects and valuation.  Bond
         strategy focuses on analysis of current versus historical interest rate
         relationships and the relative value of the bond market sectors.

         The  section   entitled  "Risk  Return   Summary-Principal   Investment
Strategies"  of the Real Estate  Equity  Investment  Fund in the  prospectus  is
hereby supplemented with the following:

                  The advisor selects  companies  exhibiting  steady cash flows,
         financial stability, quality management and reasonable valuations.

                                   MANAGEMENT

         The last two paragraphs in the section entitled  "Management-Investment
Advisors And Sub-Advisor" in the prospectus are hereby deleted and replaced with
the following:

         During the fiscal year ended June 30, 1999,  each Fund paid an advisory
fee at an annual rate based on the  average  daily net assets of the Fund (after
waivers, if any) as follows:

Balanced Fund                                                   0.65%
Growth & Income Fund                                            0.75%
Growth Opportunities Fund                                       0.75%
Index 500 Fund                                                  0.07%
International Equity Fund                                       0.75%
Micro-Cap Equity Fund                                           1.00%
Multi-Season Growth Fund                                        0.75%
Real Estate Equity Investment Fund                              0.74%
Small-Cap Value Fund                                            0.75%
Small Company Growth Fund                                       0.75%
Framlington Emerging Markets Fund                               1.25%
Framlington Healthcare Fund                                     1.00%
Framlington International Growth Fund                           1.00%
Bond Fund                                                       0.50%
Intermediate Bond Fund                                          0.50%
International Bond Fund                                         0.50%
U.S. Government Income Fund                                     0.50%
Michigan Tax-Free Bond Fund                                     0.50%
Tax-Free Bond Fund                                              0.50%
Tax-Free Short-Intermediate Bond Fund                           0.50%
Cash Investment Fund                                            0.35%
Tax-Free Money Market Fund                                      0.35%
U.S. Treasury Money Market Fund                                 0.35%
<PAGE>

         During the fiscal year ended June 30,  1999,  a portion of the advisory
fees for the Index 500 Fund and the Multi-Season  Growth Fund were waived.  As a
result,  the payments shown above for those Funds were less than the contractual
advisory fees of .20% of the first $250 million of the Index 500 Fund's  average
daily net assets;  .12% of the next $250 million of the Fund's average daily net
assets and .07% of the Fund's  average  daily net assets  over $500  million and
1.00% of the first $500 million of the Multi-Season  Growth Fund's average daily
net assets and .75% of that Fund's average daily net assets over $500 million.

<PAGE>



                THIS SUPPLEMENT SUPERCEDES ALL PRIOR SUPPLEMENTS

                                The Munder Funds

                         Supplement Dated June 27, 2000

                      to Prospectus Dated October 26, 1999

                               Class K Shares of:

      Munder Focus Growth Fund (formerly Munder Equity Selection Fund) and
               Munder Framlington Global Financial Services Fund

                                CHANGE OF ADDRESS

The section  entitled  "Your  Investment-How  to Reach the Funds by mail" in the
prospectus is hereby deleted and replaced with the following:  The Munder Funds,
c/o PFPC Global Fund Services, P.O. Box 60428, King of Prussia, PA 19406-0428.

              CHANGE OF NAME FOR FIRST DATA INVESTOR SERVICES GROUP

The name of First Data Investor  Services  Group has changed to PFPC Global Fund
Services.

       CHANGE OF NAME AND PERFORMANCE BENCHMARK FOR EQUITY SELECTION FUND

         The Board of Directors of The Munder  Funds,  Inc. has changed the name
of the Equity  Selection  Fund to the Focus Growth Fund, and approved the change
in performance benchmark for the Fund.  Accordingly,  the section entitled "Risk
Return Summary-Principal Investment Strategies" of the Fund in the prospectus is
hereby deleted and replaced with the following:

         The Fund  pursues its goal by  investing  at least 65% of its assets in
         equity securities.

         The Fund invests in equity  securities  which the advisor  believes are
         undervalued compared to stocks of other companies in the same industry.

         The Fund generally invests in companies with market  capitalizations of
         at least $1 billion.

         The Fund diversifies its assets by industry in  approximately  the same
         weightings as those of the Russell 1000 Growth Index.

         The Fund may also invest in foreign securities.


<PAGE>



                                The Munder Funds

                         Supplement Dated June 27, 2000

                      to Prospectus Dated October 26, 1999

                           Class A, B and C Shares of:

 Munder Cash Investment Fund, Munder Money Market Fund, Munder Tax-Free Money
             Market Fund and Munder U.S. Treasury Money Market Fund

                                CHANGE OF ADDRESS

The section  entitled  "Your  Investment-How  to Reach the Funds by mail" in the
prospectus is hereby deleted and replaced with the following:  The Munder Funds,
c/o PFPC Global Fund Services, P.O. Box 60428, King of Prussia, PA 19406-0428.

              CHANGE OF NAME FOR FIRST DATA INVESTOR SERVICES GROUP

The name of First Data Investor  Services  Group has changed to PFPC Global Fund
Services.

                         POLICIES FOR EXCHANGING SHARES

The third  bullet  point in the  section  entitled  "Your  Investment-Exchanging
Shares-Policies  for Exchanging  Shares" in the prospectus is hereby deleted and
replaced with the following:

o    You may  exchange  Class C shares  of the  Money  Market  Fund for Class II
     shares of other Munder Funds.

                          POLICIES FOR REDEEMING SHARES

The section entitled "Your  Investment-Redeeming  Shares-Policies  for Redeeming
Shares" in the prospectus is hereby deleted and replaced with the following:

o    For your protection,  a medallion  signature  guarantee is required for the
     following  redemption  requests:   (a)  redemption  proceeds  greater  than
     $50,000;  (b) redemption  proceeds not being payable to the  recordowner of
     the  account;  (c)  redemption  proceeds not being mailed to the address of
     record on the account; (d) if the redemption proceeds are being transferred
     to another Munder Fund account with a different registration; (e) change in
     ownership  or  registration  of the  account  or  (f)  changes  to  banking
     information  without a voided check being supplied.  When a Fund requires a
     signature  guarantee,  a medallion signature guarantee must be provided.  A
     medallion signature guarantee may be obtained from a domestic bank or trust
     company,  broker, dealer,  clearing agency,  savings association,  or other
     financial  institution  which  is  participating  in  a  medallion  program
     recognized by the Securities  Transfer  Association.  The three  recognized
     medallion  programs  are  Securities   Transfer  Agents  Medallion  Program
     (STAMP),  Stock  Exchanges  Medallion  Program  (SEMP)  and New York  Stock
     Exchange, Inc. Medallion Signature Program (NYSE MSP). Signature guarantees
     from financial  institutions  which are not  participating  in one of these
     programs will not be accepted.

                     CONTINGENT DEFERRED SALES CHARGE (CDSC)

The section  entitled  "Distribution  Arrangements-CDSC"  in the  prospectus  is
hereby deleted and replaced with the following:

You pay a CDSC when you redeem:

o    Class A shares of the Money Market Fund within one year of buying them;
o    Class A shares of the Money  Market Fund  acquired  through the exchange of
     Class A shares of another  Munder  Fund  purchased  before June 27, 1995 as
     part of an investment of $500,000 or more;

<PAGE>

o    Class B shares of the Money  Market Fund  within six years of buying  them;
     and
o    Class C shares of the Money Market Fund within one year of buying them.

         These time periods  include the time you held the shares you  exchanged
to acquire Money Market Fund shares.

         You pay a 1% CDSC when you  redeem  Class A shares of the Money  Market
Fund:

o    that you acquired through the exchange of initial Class A shares of another
     Munder Fund;
o    if you acquired the initial Class A shares after June 27, 1995;and
o    if the initial shares were  purchased  without a sales charge in connection
     with an investment of $1,000,000 or more.

You pay a CDSC of 1% when you  redeem  Class C shares of the Money  Market  Fund
within one year of the date you  purchased  the initial  Class C shares that you
exchanged to acquire Money Market Fund shares.

The CDSC  schedule for Class B shares of the Money Market Fund  purchased  after
June  27,  1995  is  set  forth  below.  Consult  the  Statement  of  Additional
Information for the CDSC schedule for Class B shares purchased on or before June
27, 1995.  The CDSC is based on the original NAV at the time of your  investment
or the NAV at the time of  redemption,  whichever  is  lower.  Shares  purchased
through reinvestment of distributions are not subject to CDSC.

                                Money Market Fund Class B Shares
                                --------------------------------
                     Years Since Purchase                     CDSC
                     --------------------                     ----
                     First................................    5.00%
                     Second...............................    4.00%
                     Third................................    3.00%
                     Fourth...............................    3.00%
                     Fifth................................    2.00%
                     Sixth................................    1.00%
                     Seventh and thereafter...............    0.00%

If you sell some but not all of your shares,  certain shares not subject to CDSC
(i.e.,  shares  purchased with  reinvested  dividends)  will be redeemed  first,
followed  by shares  subject to the lowest CDSC  (typically  shares held for the
longest time).

For  example,  assume an investor  purchased  1,000 shares at $10 a share (for a
total cost of $10,000).  Three years later, the shares have a net asset value of
$12 per share and during that time, the investor  acquired 100 additional shares
through dividend reinvestment.  If the investor then makes one redemption of 500
shares (resulting in proceeds of $6,000,  500 shares x $12 per share), the first
100 shares  redeemed  will not be subject to the CDSC because they were acquired
through  reinvestment  of  dividends.  With respect to the  remaining 400 shares
redeemed,  the CDSC is charged at $10 per share  (because the original  purchase
price of $10 per share is lower  than the  current  net  asset  value of $12 per
share). Therefore, only $4,000 of the $6,000 such investor received from selling
his or her  shares  will  be  subject  to the  CDSC,  at a rate  of  3.00%  (the
applicable rate in the third year after purchase).

CDSC Waivers

We will waive the CDSC  payable upon  redemption  of Class B shares of the Money
Market Fund which you purchased after June 27, 1995 for:

o    redemptions  made  within  one year  after  the death of a  shareholder  or
     registered joint owner;
o    minimum  required  distributions  made from an IRA or other retirement plan
     account after you reach age 70 1/2;
o    involuntary redemptions made by the Fund;
o    redemptions  limited  to 10% per year of an  account's  net asset  value if
     taken by Systematic  Withdrawal Plan ("SWP").  For example, if your balance
     on  December  31st is $10,000,  you can redeem up to $1,000 that  following
     year free of charge through SWP.

We will waive the CDSC payable upon  redemptions  of shares which you  purchased
after  December  1, 1998 (or  acquired  through an exchange of shares of another
Munder Fund purchased after December 1, 1998) for:

o redemptions  made from an IRA or other  individual  retirement  plan  account
  established  through  Comerica  Securities,  Inc. after you reach age 59 1/2
  and after the eighteen month anniversary of the purchase of Fund shares.

Consult the  Statement of  Additional  Information  for Class A and Class B CDSC
waivers which apply when you redeem shares of the Money Market Fund purchased on
or before June 27, 1995.

<PAGE>



                THIS SUPPLEMENT SUPERCEDES ALL PRIOR SUPPLEMENTS

                                The Munder Funds

                         Supplement Dated June 27, 2000

                      to Prospectus Dated October 26, 1999

                           Class A, B and C Shares of:

Munder Bond Fund, Munder Intermediate Bond Fund, Munder International Bond Fund,
   Munder U.S. Government Income Fund, Munder Michigan Tax-Free Bond Fund,
                 Munder Tax-Free Bond Fund and Munder Tax-Free
                          Short-Intermediate Bond Fund

                                CHANGE OF ADDRESS

The section  entitled  "Your  Investment-How  to Reach the Funds by mail" in the
prospectus is hereby deleted and replaced with the following:  The Munder Funds,
c/o PFPC Global Fund Services, P.O. Box 60428, King of Prussia, PA 19406-0428.

              CHANGE OF NAME FOR FIRST DATA INVESTOR SERVICES GROUP

The name of First Data Investor  Services  Group has changed to PFPC Global Fund
Services.

                         POLICIES FOR EXCHANGING SHARES

The second  bullet  point in the section  entitled  "Your  Investment-Exchanging
Shares-Policies  for Exchanging  Shares" in the prospectus is hereby deleted and
replaced with the following:

o You may exchange  Class C shares of a Fund for Class II shares of other Munder
  Funds.

                          POLICIES FOR REDEEMING SHARES

The section entitled "Your  Investment-Redeeming  Shares-Policies  for Redeeming
Shares" in the prospectus is hereby deleted and replaced with the following:

o    For your protection,  a medallion  signature  guarantee is required for the
     following  redemption  requests:   (a)  redemption  proceeds  greater  than
     $50,000;  (b) redemption  proceeds not being payable to the  recordowner of
     the  account;  (c)  redemption  proceeds not being mailed to the address of
     record on the account; (d) if the redemption proceeds are being transferred
     to another Munder Fund account with a different registration; (e) change in
     ownership  or  registration  of the  account  or  (f)  changes  to  banking
     information  without a voided check being supplied.  When a Fund requires a
     signature  guarantee,  a medallion signature guarantee must be provided.  A
     medallion signature guarantee may be obtained from a domestic bank or trust
     company,  broker, dealer,  clearing agency,  savings association,  or other
     financial  institution  which  is  participating  in  a  medallion  program
     recognized by the Securities  Transfer  Association.  The three  recognized
     medallion  programs  are  Securities   Transfer  Agents  Medallion  Program
     (STAMP),  Stock  Exchanges  Medallion  Program  (SEMP)  and New York  Stock
     Exchange, Inc. Medallion Signature Program (NYSE MSP). Signature guarantees
     from financial  institutions  which are not  participating  in one of these
     programs will not be accepted.

                             REINVESTMENT PRIVILEGE

The paragraph  pertaining to the Reinvestment  Privilege in the section entitled
"Your Investment-Shareholder Privileges" in the prospectus is hereby deleted and
replaced with the following:
<PAGE>

         Reinvestment  Privilege.  For 60 days after you sell  shares of a Fund,
         you may reinvest your  redemption  proceeds in shares of the same class
         of the  SAME  Fund at NAV.  Any CDSC  you  paid on the  amount  you are
         reinvesting  will be  credited  to  your  account.  You  may  use  this
         privilege  once in any given  twelve-month  period with respect to your
         shares of a Fund.  You,  your  broker or your  financial  advisor  must
         notify the Funds' transfer agent in writing at the time of reinvestment
         in order to eliminate the sales charge on your reinvestment.

                              SALES CHARGE WAIVERS

The first  sentence of Sales  Charge  Waivers-General  in the  section  entitled
"Distribution  Arrangements-Applicable  Sales  Charge  Class  A  Shares"  in the
prospectus is hereby deleted and replaced with the following:

         We will  waive  the  initial  sales  charge  on Class A shares  for the
         following  types of  purchasers  (the word  "advisor" in the  following
         refers to Munder Capital Management, the advisor to The Munder Funds).

                              RIGHT OF ACCUMULATION

The paragraph  pertaining to the Right of Accumulation  in the section  entitled
"Distribution  Arrangements-Applicable Sales Charge Class A Shares- Sales Charge
Reductions" in the prospectus is hereby deleted and replaced with the following:

o Right of  Accumulation.  You may add the value of any other  Class A shares of
non-money market Munder Funds you already own to the amount of your next Class A
share investment for purposes of calculating the sales charge at the time of the
current  purchase.  You must notify your broker,  your financial  advisor or the
Funds' transfer agent to qualify.

                     CONTINGENT DEFERRED SALES CHARGE (CDSC)

The section  entitled  "Distribution  Arrangements-CDSC"  in the  prospectus  is
hereby deleted and replaced with the following:

You pay a CDSC when you redeem:

o  Class A shares that were bought as part of an investment of at least
   $1 million within one year of buying them;
o  Class B shares within six years of buying them; and
o  Class C shares within one year of buying them.

These time periods include the time you held Class B, Class C or Class II shares
of  another  Munder  Fund which you may have  exchanged  for Class B, Class C or
Class II shares of the Fund you are redeeming.

The CDSC schedule for Class B shares  purchased after June 27, 1995 is set forth
below.  If you acquired  Class B shares by exchanging  shares of another  Munder
Fund which you  purchased on or before June 27, 1995,  consult the  Statement of
Additional  Information for the applicable  CDSC schedule.  The CDSC is based on
the  original  NAV at the  time of  your  investment  or the NAV at the  time of
redemption,  whichever  is  lower.  Shares  purchased  through  reinvestment  of
distributions are not subject to CDSC.

                     Years Since Purchase                     CDSC
                     --------------------                     ----
                     First.................................   5.00%
                     Second................................   4.00%
                     Third.................................   3.00%
                     Fourth................................   3.00%
                     Fifth.................................   2.00%
                     Sixth.................................   1.00%
                     Seventh and thereafter................   0.00%
<PAGE>

If you sell some but not all of your shares,  certain shares not subject to CDSC
(i.e.,  shares  purchased with  reinvested  dividends)  will be redeemed  first,
followed  by shares  subject to the lowest CDSC  (typically  shares held for the
longest time).

For  example,  assume an investor  purchased  1,000 shares at $10 a share (for a
total cost of $10,000).  Three years later, the shares have a net asset value of
$12 per share and during that time, the investor  acquired 100 additional shares
through dividend reinvestment.  If the investor then makes one redemption of 500
shares (resulting in proceeds of $6,000,  500 shares x $12 per share), the first
100 shares  redeemed  will not be subject to the CDSC because they were acquired
through  reinvestment  of  dividends.  With respect to the  remaining 400 shares
redeemed,  the CDSC is charged at $10 per share  (because the original  purchase
price of $10 per share is lower  than the  current  net  asset  value of $12 per
share). Therefore, only $4,000 of the $6,000 such investor received from selling
his or her  shares  will  be  subject  to the  CDSC,  at a rate  of  3.00%  (the
applicable rate in the third year after purchase).

At the time of purchase  of Class B shares,  the Funds'  distributor  pays sales
commissions  of 4.00% of the  purchase  price to brokers  that  initiate and are
responsible for purchases of such Class B shares.

CDSC Waivers

We will waive the CDSC payable upon  redemptions  of shares which you  purchased
after June 27,1995 (or acquired  through an exchange of shares of another Munder
Fund purchased after June 27, 1995) for:

o redemptions  made  within  one  year  after  the  death of a  shareholder  or
  registered  joint owner;
o minimum  required  distributions  made from an IRA or
  other retirement plan account after you reach age 70 1/2;
o involuntary redemptions made by the Fund;
o redemptions  limited to 10% per year of an account's net asset value if taken
  by Systematic  Withdrawal Plan ("SWP"). For example, if your balance on
  December 31st is $10,000 you can redeem up to $1,000 that  following  year
  free of charge through SWP.

We will waive the CDSC payable upon  redemptions  of shares which you  purchased
after  December  1, 1998 (or  acquired  through an exchange of shares of another
Munder Fund purchased after December 1, 1998) for:

o redemptions  made from an IRA or other  individual  retirement plan account
  established  through Comerica  Securities,  Inc. after you reach age 59 1/2
  and after the eighteen month anniversary of the purchase of Fund shares.

Consult the Statement of Additional  Information  for Class B CDSC waivers which
apply when you redeem  shares  purchased on or before June 27, 1995 (or acquired
through an exchange of shares of another Munder Fund purchased on or before June
27, 1995).

We will waive the CDSC for Class B shares for all  redemptions  by Merrill Lynch
Plans if:

(i)  the Plan is recordkept on a daily valuation basis by Merrill Lynch; or
(ii) the  Plan is  recordkept  on a  daily  valuation  basis  by an independent
     recordkeeper  whose services are provided through a contract or alliance
     arrangement with Merrill Lynch; or
(iii)the Plan has less than 500 eligible employees, as determined by the Merrill
     Lynch plan conversion  manager, on the date the plan sponsor signs the
     Merrill Lynch Recordkeeping Service Agreement.
<PAGE>

     PORTFOLIO MANAGEMENT OF MUNDER BOND FUND, MUNDER INTERMEDIATE BOND FUND
                     AND MUNDER U.S. GOVERNMENT INCOME FUND

Anne K. Kennedy and Peter G. Root jointly manage the Bond Fund, the Intermediate
Bond Fund and U.S.  Government  Income Fund.  Ms.  Kennedy,  Vice  President and
Director of Portfolio Management of the Advisor or of Old MCM, Inc. ("Old MCM"),
the  predecessor  to the Advisor  since 1991,  has managed the Bond Fund and the
U.S.  Government  Income Fund since January 2000 and the Intermediate  Bond Fund
since March 1995. Mr. Root, Vice President and Chief Investment Officer of Fixed
Income  of the  Advisor  since  March  1995,  has  managed  the  Bond  Fund  and
Intermediate  Bond Fund since January 2000 and the U.S.  Government  Income Fund
since March 1995. Mr. Root joined Old MCM in 1991.

             PORTFOLIO MANAGEMENT OF MUNDER INTERNATIONAL BOND FUND

Sharon E. Fayolle and Peter G. Root jointly manage the International  Bond Fund.
Ms. Fayolle, Vice President and Director of Money Market Trading for the Advisor
or Old MCM,  has  managed  the Fund  since  1996.  Prior to that she  managed an
international  portfolio for Ford Motor  Company.  Mr. Root,  Vice President and
Chief  Investment  Officer of Fixed Income of the Advisor since March 1995,  has
managed the Fund since January 2000. Mr. Root joined Old MCM in 1991.

<PAGE>



                THIS SUPPLEMENT SUPERCEDES ALL PRIOR SUPPLEMENTS

                                The Munder Funds

                         Supplement Dated June 27, 2000

                      to Prospectus Dated October 26, 1999

                          Class A, B and II Shares of:

                          Munder Future Technology Fund

                                CHANGE OF ADDRESS

The  section  entitled  "Your  Investment-How  to Reach the Fund by mail" in the
prospectus is hereby deleted and replaced with the following:  The Munder Funds,
c/o PFPC Global Fund Services, P.O. Box 60428, King of Prussia, PA 19406-0428.

              CHANGE OF NAME FOR FIRST DATA INVESTOR SERVICES GROUP

The name of First Data Investor  Services  Group has changed to PFPC Global Fund
Services.

                            PURCHASE PRICE OF SHARES

The Purchase Price of Shares in the section entitled "Your Investment-Purchasing
Shares" in the prospectus is hereby deleted and replaced with the following:

         Class A and Class II shares of the Fund are sold at net asset value per
         share (NAV) next  determined plus any applicable  sales charge.  Please
         see  "Distribution  Arrangements"  below for  information  about  sales
         charges.

         Class B shares  of the Fund  are  sold at NAV next  determined  after a
         purchase order is received in proper form.

         Broker-dealers   or   financial   advisors   (other   than  the  Fund's
         distributor)  may charge you  additional  fees for shares you  purchase
         through them.

                          METHODS FOR PURCHASING SHARES

The  Methods  for  Purchasing  Shares  By Mail  in the  section  entitled  "Your
Investment-Purchasing  Shares" in the prospectus is hereby supplemented with the
following: We do not accept third-party checks.

                          POLICIES FOR REDEEMING SHARES

The section entitled "Your  Investment-Redeeming  Shares-Policies  for Redeeming
Shares" in the prospectus is hereby deleted and replaced with the following:

o    For your protection,  a medallion  signature  guarantee is required for the
     following  redemption  requests:   (a)  redemption  proceeds  greater  than
     $50,000;  (b) redemption  proceeds not being payable to the  recordowner of
     the  account;  (c)  redemption  proceeds not being mailed to the address of
     record on the account; (d) if the redemption proceeds are being transferred
     to another Munder Fund account with a different registration; (e) change in
     ownership  or  registration  of the  account  or  (f)  changes  to  banking
     information without a voided check being supplied. When the Fund requires a
     signature  guarantee,  a medallion signature guarantee must be provided.  A
     medallion signature guarantee may be obtained from a domestic bank or trust
     company,  broker, dealer,  clearing agency,  savings association,  or other
     financial  institution  which  is  participating  in  a  medallion  program
     recognized by the Securities  Transfer  Association.  The three  recognized
     medallion  programs  are  Securities   Transfer  Agents  Medallion  Program
     (STAMP),  Stock  Exchanges  Medallion  Program  (SEMP)  and New York  Stock
     Exchange, Inc. Medallion Signature Program (NYSE MSP). Signature guarantees
     from financial  institutions  which are not  participating  in one of these
     programs will not be accepted.

<PAGE>

                             REINVESTMENT PRIVILEGE

The paragraph  pertaining to the Reinvestment  Privilege in the section entitled
"Your Investment-Shareholder Privileges" in the prospectus is hereby deleted and
replaced with the following:

         Reinvestment Privilege.  For 60 days after you sell shares of the Fund,
         you may reinvest your  redemption  proceeds in shares of the same class
         of the  SAME  Fund at NAV.  Any CDSC  you  paid on the  amount  you are
         reinvesting  will be  credited  to  your  account.  You  may  use  this
         privilege  once in any given  twelve-month  period with respect to your
         shares of the Fund.  You,  your broker or your  financial  advisor must
         notify the Fund's transfer agent in writing at the time of reinvestment
         in order to eliminate the sales charge on your reinvestment.

                              SALES CHARGE WAIVERS

The section entitled "Distribution  Arrangements-Applicable Sales Charge Class A
Shares- Sales Charge  Waivers-General"  in the  prospectus is hereby deleted and
replaced with the following:

We will waive the initial sales charge on Class A shares for the following types
of  purchasers  (the word  "advisor" in the following  refers to Munder  Capital
Management, the advisor to The Munder Funds).

1.   individuals with an investment account or relationship with the advisor;

2.   full-time employees and retired employees of the advisor or its affiliates,
     employees of the Fund's service  providers and immediate  family members of
     such persons;

3.   registered  broker-dealers  or  financial  advisors  that have entered into
     selling  agreements  with the  distributor,  for their own  accounts or for
     retirement plans for their employees or sold to registered  representatives
     for  full-time   employees  (and  their   families)  that  certify  to  the
     distributor  at the time of  purchase  that such  purchase is for their own
     account (or for the benefit of their families);

4.   certain qualified employee benefit plans as described below;

5.   individuals  who reinvest a distribution  from a qualified  retirement plan
     for which the advisor serves as investment advisor;

6.   individuals who reinvest the proceeds of redemptions from Class Y Shares of
     the Munder Funds within 60 days of redemption;

7.   banks and other  financial  institutions  that have entered into agreements
     with the  Munder  Funds  to  provide  shareholder  services  for  customers
     (including  customers of such banks and other financial  institutions,  and
     the immediate family members of such customers);

8.   fee-based  financial  planners or employee benefit plan consultants  acting
     for the accounts of their clients;

9.   employer  sponsored  retirement  plans which are  administered by Universal
     Pensions, Inc. (UPI Plans); and

10.  employer  sponsored  401(k) plans that are  administered  by Merrill  Lynch
     Group  Employee  Services  (Merrill  Lynch  Plans)  which meet the criteria
     described below under "Sales Charge Waivers - Qualified  Employer Sponsored
     Retirement Plans."
<PAGE>

                              RIGHT OF ACCUMULATION

The paragraph  pertaining to the Right of Accumulation  in the section  entitled
"Distribution  Arrangements-Applicable Sales Charge Class A Shares- Sales Charge
Reductions" in the prospectus is hereby deleted and replaced with the following:

o Right of  Accumulation.  You may add the value of any other  Class A shares of
non-money market Munder Funds you already own to the amount of your next Class A
share investment for purposes of calculating the sales charge at the time of the
current  purchase.  You must notify your broker,  your financial  advisor or the
Fund's transfer agent to qualify.

                    APPLICABLE SALES CHARGE - CLASS II SHARES

The section  entitled  "Distribution  Arrangements"  in the prospectus is hereby
supplemented with the following:

Applicable Sales Charge - Class II Shares
You can purchase  Class II shares at the NAV plus an initial sales  charge.  The
current  sales  charge  rates and  commissions  paid to selected  dealers are as
follows:

                    Sales Charge                      Dealer Reallowance
                 as a Percentage of                    as a Percentage
               Your          Net Asset                      of the
            Investment         Value                    Offering Price
               1.00%           1.10%                         1.10%

                     CONTINGENT DEFERRED SALES CHARGE (CDSC)

The section  entitled  "Distribution  Arrangements-CDSC"  in the  prospectus  is
hereby deleted and replaced with the following:

You pay a CDSC when you redeem:

o Class A  shares  that  were  bought  as part of an  investment  of at least $1
  million within one year of buying them;
o Class B shares within six years of buying them; and
o Class II shares within eighteen months of buying them.

These time  periods  include the time you held Class B, Class C or Class II
shares of another  Munder  Fund which you may have  exchanged  for Class B,
Class C or Class II shares of the Fund.

The CDSC  schedule for Class B shares is set forth  below.  If you acquired
Class B shares  by  exchanging  shares of  another  Munder  Fund  which you
purchased on or before June 27, 1995,  consult the  Statement of Additional
Information  for the  applicable  CDSC  schedule.  The CDSC is based on the
original  NAV at the  time of  your  investment  or the NAV at the  time of
redemption,  whichever is lower.  Shares purchased through  reinvestment of
distributions are not subject to CDSC.

                     Years Since Purchase                     CDSC
                     --------------------                     ----
                     First................................    5.00%
                     Second...............................    4.00%
                     Third................................    3.00%
                     Fourth...............................    3.00%
                     Fifth................................    2.00%
                     Sixth................................    1.00%
                     Seventh and thereafter...............    0.00%

If you sell some but not all of your shares,  certain shares not subject to CDSC
(i.e., shares  purchased  with  reinvested  dividends)  will be  redeemed first,
followed  by shares  subject to the lowest CDSC  (typically  shares held for the
longest time).
<PAGE>

For example,  assume an  investor purchased 1,000  shares at $10 a share (for a
total cost of $10,000).  Three  years later,  the  shares have a net asset value
of $12 per share and during that time,  the  investor  acquired  100  additional
shares through dividend reinvestment.  If the investor then makes one redemption
of 500 shares (resulting in proceeds of $6,000, 500 shares x $12 per share), the
first 100 shares  redeemed  will not be subject  to the CDSC  because  they were
acquired  through  reinvestment of dividends.  With respect to the remaining 400
shares  redeemed,  the CDSC is charged at $10 per share  (because  the  original
purchase price of $10 per share is lower than the current net asset value of $12
per share).  Therefore,  only $4,000 of the $6,000 such  investor  received from
selling his or her shares  will be subject to the CDSC,  at a rate of 3.00% (the
applicable rate in the third year after purchase).

At the  time of purchase  of  Class  B shares and  Class II  shares,  the Fund's
distributor  pays sales  commissions  of 4.00% and 1.00%,  respectively,  of the
purchase  price to brokers that  initiate and are  responsible  for purchases of
such Class B shares and Class II shares of the Fund.

CDSC Waivers

We will waive the CDSC payable upon redemption of shares of the Fund (which you
purchased or acquired  through an exchange of shares of another  Munder Fund
purchased after June 27, 1995) for:

o    redemptions  made  within  one year  after  the death of a  shareholder  or
     registered joint owner; o minimum required  distributions  made from an IRA
     or other retirement plan account after you reach age 70 1/2;
o    involuntary redemptions made by the Fund;
o    redemptions  limited  to 10% per year of an  account's  net asset  value if
     taken by Systematic  Withdrawal Plan ("SWP").  For example, if your balance
     on December 31st is $10,000 you can redeem up to $1,000 that following year
     free of charge through SWP.
o    redemptions  made from an IRA or other  individual  retirement plan account
     established  through Comerica  Securities,  Inc. after you reach age 59 1/2
     and after the eighteen month anniversary of the purchase of Fund shares.

Consult the  Statement of  Additional  Information  for CDSC waivers which apply
when you redeem shares acquired  through an exchange of shares of another Munder
Fund purchased on or before June 27, 1995.

We will  waive  the CDSC for  Class B shares  for all  redemptions  by Merrill
Lynch Plans if:

(i)  the Plan is recordkept on a daily valuation basis by Merrill Lynch; or
(ii) the  Plan  is  recordkept  on a daily  valuation  basis  by an  independent
     recordkeeper  whose  services are  provided  through a contract or alliance
     arrangement with Merrill Lynch; or
(iii)the  Plan has  less  than 500  eligible  employees,  as  determined  by the
     Merrill Lynch plan conversion  manager,  on the date the plan sponsor signs
     the Merrill Lynch Recordkeeping Service Agreement.

                              PORTFOLIO MANAGEMENT

The section entitled "Management-Portfolio Managers" in the prospectus is hereby
deleted  and  replaced  with the  following:  A team of  professional  portfolio
managers employed by the advisor makes investment decisions for the Fund.

                               HOUSEHOLDING POLICY

Annual and semiannual  reports to shareholders  contain  additional  information
about the Fund's investments. The Fund's annual report also discusses the market
conditions  and investment  strategies  that  significantly  affected the Fund's
performance during its last fiscal year.

With your consent, The Munder Funds may send a single prospectus and shareholder
report to your  residence for you and any other member of your household who has
an account with the Funds.  If you wish to revoke your consent to this practice,
you may do so by notifying The Munder Funds, by phone or in writing (see "How to
Reach the Fund").  We will begin mailing  separate  prospectuses and shareholder
reports to you within 30 days after receiving your notice.

<PAGE>



                                The Munder Funds

                         Supplement Dated June 27, 2000

                        to Prospectus Dated April 3, 2000

                          Class A, B and II Shares of:

                        Munder International NetNet Fund

                                CHANGE OF ADDRESS

The  section  entitled  "Your  Investment-How  to Reach the Fund by mail" in the
prospectus is hereby deleted and replaced with the following:  The Munder Funds,
c/o PFPC Global Fund Services, P.O. Box 60428, King of Prussia, PA 19406-0428.

              CHANGE OF NAME FOR FIRST DATA INVESTOR SERVICES GROUP

The name of First Data Investor  Services  Group has changed to PFPC Global Fund
Services.

                            PURCHASE PRICE OF SHARES

The Purchase Price of Shares in the section entitled "Your Investment-Purchasing
Shares" in the prospectus is hereby deleted and replaced with the following:

         Class A and Class II shares of the Fund are sold at net asset value per
         share (NAV) next  determined plus any applicable  sales charge.  Please
         see  "Distribution  Arrangements"  below for  information  about  sales
         charges.

         Class B shares  of the Fund  are  sold at NAV next  determined  after a
         purchase order is received in proper form.

         Broker-dealers   or   financial   advisors   (other   than  the  Fund's
         distributor)  may charge you  additional  fees for shares you  purchase
         through them.

                          POLICIES FOR REDEEMING SHARES

The section entitled "Your  Investment-Redeeming  Shares-Policies  for Redeeming
Shares" in the prospectus is hereby deleted and replaced with the following:

o    For your protection,  a medallion  signature  guarantee is required for the
     following  redemption  requests:   (a)  redemption  proceeds  greater  than
     $50,000;  (b) redemption  proceeds not being payable to the  recordowner of
     the  account;  (c)  redemption  proceeds not being mailed to the address of
     record on the account; (d) if the redemption proceeds are being transferred
     to another Munder Fund account with a different registration; (e) change in
     ownership  or  registration  of the  account  or  (f)  changes  to  banking
     information without a voided check being supplied. When the Fund requires a
     signature  guarantee,  a medallion signature guarantee must be provided.  A
     medallion signature guarantee may be obtained from a domestic bank or trust
     company,  broker, dealer,  clearing agency,  savings association,  or other
     financial  institution  which  is  participating  in  a  medallion  program
     recognized by the Securities  Transfer  Association.  The three  recognized
     medallion  programs  are  Securities   Transfer  Agents  Medallion  Program
     (STAMP),  Stock  Exchanges  Medallion  Program  (SEMP)  and New York  Stock
     Exchange, Inc. Medallion Signature Program (NYSE MSP). Signature guarantees
     from financial  institutions  which are not  participating  in one of these
     programs will not be accepted.
<PAGE>

                             REINVESTMENT PRIVILEGE

The paragraph  pertaining to the Reinvestment  Privilege in the section entitled
"Your Investment-Shareholder Privileges" in the prospectus is hereby deleted and
replaced with the following:

         Reinvestment Privilege.  For 60 days after you sell shares of the Fund,
         you may reinvest your  redemption  proceeds in shares of the same class
         of the  SAME  Fund at NAV.  Any CDSC  you  paid on the  amount  you are
         reinvesting  will be  credited  to  your  account.  You  may  use  this
         privilege  once in any given  twelve-month  period with respect to your
         shares of the Fund.  You,  your broker or your  financial  advisor must
         notify the Fund's transfer agent in writing at the time of reinvestment
         in order to eliminate the sales charge on your reinvestment.

                              SALES CHARGE WAIVERS

The first  sentence of Sales  Charge  Waivers-General  in the  section  entitled
"Distribution  Arrangements-Applicable  Sales  Charge  Class  A  Shares"  in the
prospectus is hereby deleted and replaced with the following:

         We will  waive  the  initial  sales  charge  on Class A shares  for the
         following  types of  purchasers  (the word  "advisor" in the  following
         refers to Munder Capital Management, the advisor to The Munder Funds).

                              RIGHT OF ACCUMULATION

The paragraph  pertaining to the Right of Accumulation  in the section  entitled
"Distribution  Arrangements-Applicable Sales Charge Class A Shares- Sales Charge
Reductions" in the prospectus is hereby deleted and replaced with the following:

o    Right of Accumulation.  You may add the value of any other Class A
     shares of  non-money  market  Munder  Funds you already own to the
     amount of your  next  Class A share  investment  for  purposes  of
     calculating the sales charge at the time of the current  purchase.
     You must notify your broker,  your financial advisor or the Fund's
     transfer agent to qualify.

                    APPLICABLE SALES CHARGE - CLASS II SHARES

The section  entitled  "Distribution  Arrangements"  in the prospectus is hereby
supplemented with the following:

Applicable Sales Charge - Class II Shares

You can purchase  Class II shares at the NAV plus an initial sales  charge.  The
current  sales  charge  rates and  commissions  paid to selected  dealers are as
follows:

                 Sales Charge                    Dealer Reallowance
              as a Percentage of                  as a Percentage
             Your         Net Asset                    of the
          Investment        Value                  Offering Price
            1.00%           1.10%                       1.10%

                     CONTINGENT DEFERRED SALES CHARGE (CDSC)

The section  entitled  "Distribution  Arrangements-CDSC"  in the  prospectus  is
hereby deleted and replaced with the following:

You pay a CDSC when you redeem:

o Class A  shares  that  were  bought  as part of an  investment  of at least $1
  million within one year of buying them;
o Class B shares within six years of buying them; and
o Class II shares within eighteen months of buying them.

These time periods include the time you held Class B, Class C or Class II shares
of  another  Munder  Fund which you may have  exchanged  for Class B, Class C or
Class II shares of the Fund.
<PAGE>

The CDSC schedule for Class B shares is set forth below. If you acquired Class B
shares by  exchanging  shares of another  Munder Fund which you  purchased on or
before June 27, 1995,  consult the Statement of Additional  Information  for the
applicable  CDSC schedule.  The CDSC is based on the original NAV at the time of
your investment or the NAV at the time of redemption, whichever is lower. Shares
purchased through reinvestment of distributions are not subject to CDSC.

                     Years Since Purchase                     CDSC
                     --------------------                     ----
                     First................................    5.00%
                     Second...............................    4.00%
                     Third................................    3.00%
                     Fourth...............................    3.00%
                     Fifth................................    2.00%
                     Sixth................................    1.00%
                     Seventh and thereafter...............    0.00%

If you sell some but not all of your shares,  certain shares not subject to CDSC
(i.e., shares  purchased  with  reinvested  dividends)  will  be redeemed first,
followed  by shares  subject to the lowest CDSC  (typically  shares held for the
longest time).

For example,  assume  an investor  purchased 1,000 shares  at $10 a share (for a
total cost of $10,000).  Three years later,  the  shares  have a net asset value
of $12 per share and during that time,  the  investor  acquired  100  additional
shares through dividend reinvestment.  If the investor then makes one redemption
of 500 shares (resulting in proceeds of $6,000, 500 shares x $12 per share), the
first 100 shares  redeemed  will not be subject  to the CDSC  because  they were
acquired  through  reinvestment of dividends.  With respect to the remaining 400
shares  redeemed,  the CDSC is charged at $10 per share  (because  the  original
purchase price of $10 per share is lower than the current net asset value of $12
per share).  Therefore,  only $4,000 of the $6,000 such  investor  received from
selling his or her shares  will be subject to the CDSC,  at a rate of 3.00% (the
applicable rate in the third year after purchase).

At the  time  of purchase  of  Class B shares  and Class II shares,  the  Fund's
distributor  pays sales  commissions  of 4.00% and 1.00%,  respectively,  of the
purchase  price to brokers that  initiate and are  responsible  for purchases of
such Class B shares and Class II shares of the Fund.

CDSC Waivers

We  will waive the CDSC payable upon redemption of shares of the Fund (which you
purchased  or acquired  through  an exchange  of shares  of another  Munder Fund
purchased after June 27, 1995) for:

o    redemptions  made  within  one year  after  the death of a  shareholder  or
     registered joint owner; o minimum required  distributions  made from an IRA
     or other retirement plan account after you reach age 70 1/2;
o    involuntary redemptions made by the Fund;
o    redemptions  limited  to 10% per year of an  account's  net asset  value if
     taken by Systematic  Withdrawal Plan ("SWP").  For example, if your balance
     on December 31st is $10,000 you can redeem up to $1,000 that following year
     free of charge through SWP.
o    redemptions  made from an IRA or other  individual  retirement plan account
     established  through Comerica  Securities,  Inc. after you reach age 59 1/2
     and after the eighteen month anniversary of the purchase of Fund shares.

Consult the  Statement of Additional  Information for Class B CDSC waivers which
apply  when  you  redeem  shares  purchased  on  or  before  June 27, 1995  (or
acquired  through an exchange of shares of another  Munder Fund  purchased on or
before June 27, 1995).

We will  waive  the  CDSC for  Class B shares  for all  redemptions  by  Merrill
Lynch Plans if:

(i)   the Plan is recordkept on a daily valuation basis by Merrill Lynch; or
(ii)  the  Plan  is  recordkept  on a  daily  valuation  basis  by  an
      independent  recordkeeper  whose services are provided through a
      contract or alliance arrangement with Merrill Lynch; or
(iii) the Plan has less than 500 eligible employees,  as determined by
      the Merrill Lynch plan conversion  manager, on the date the plan
      sponsor signs the Merrill Lynch Recordkeeping Service Agreement.
<PAGE>

                               HOUSEHOLDING POLICY

Annual and semiannual  reports to shareholders  contain  additional  information
about the Fund's investments. The Fund's annual report also discusses the market
conditions  and investment  strategies  that  significantly  affected the Fund's
performance during its last fiscal year.

With your consent, The Munder Funds may send a single prospectus and shareholder
report to your  residence for you and any other member of your household who has
an account with the Funds.  If you wish to revoke your consent to this practice,
you may do so by notifying The Munder Funds, by phone or in writing (see "How to
Reach the Fund").  We will begin mailing  separate  prospectuses and shareholder
reports to you within 30 days after receiving your notice.

<PAGE>



                                The Munder Funds

                         Supplement Dated June 27, 2000

                        to Prospectus Dated April 3, 2000

                               Class K Shares of:

                        Munder International NetNet Fund

                                CHANGE OF ADDRESS

The  section  entitled  "Your  Investment-How  to Reach the Fund by mail" in the
prospectus is hereby deleted and replaced with the following:  The Munder Funds,
c/o PFPC Global Fund Services, P.O. Box 60428, King of Prussia, PA 19406-0428.

              CHANGE OF NAME FOR FIRST DATA INVESTOR SERVICES GROUP

The name of First Data Investor  Services  Group has changed to PFPC Global Fund
Services.

                               HOUSEHOLDING POLICY

Annual and semiannual  reports to shareholders  contain  additional  information
about the Fund's investments. The Fund's annual report also discusses the market
conditions  and investment  strategies  that  significantly  affected the Fund's
performance during its last fiscal year.

With your consent, The Munder Funds may send a single prospectus and shareholder
report to your  residence for you and any other member of your household who has
an account with the Funds.  If you wish to revoke your consent to this practice,
you may do so by notifying The Munder Funds, by phone or in writing (see "How to
Reach the Fund").  We will begin mailing  separate  prospectuses and shareholder
reports to you within 30 days after receiving your notice.

<PAGE>



                                The Munder Funds

                         Supplement Dated June 27, 2000

                        to Prospectus Dated April 3, 2000

                               Class Y Shares of:

                        Munder International NetNet Fund

                                CHANGE OF ADDRESS

The  section  entitled  "Your  Investment-How  to Reach the Fund by mail" in the
prospectus is hereby deleted and replaced with the following:  The Munder Funds,
c/o PFPC Global Fund Services, P.O. Box 60428, King of Prussia, PA 19406-0428.

              CHANGE OF NAME FOR FIRST DATA INVESTOR SERVICES GROUP

The name of First Data Investor  Services  Group has changed to PFPC Global Fund
Services.

                               HOUSEHOLDING POLICY

Annual and semiannual  reports to shareholders  contain  additional  information
about the Fund's investments. The Fund's annual report also discusses the market
conditions  and investment  strategies  that  significantly  affected the Fund's
performance during its last fiscal year.

With your consent, The Munder Funds may send a single prospectus and shareholder
report to your  residence for you and any other member of your household who has
an account with the Funds.  If you wish to revoke your consent to this practice,
you may do so by notifying The Munder Funds, by phone or in writing (see "How to
Reach the Fund").  We will begin mailing  separate  prospectuses and shareholder
reports to you within 30 days after receiving your notice.

<PAGE>



                THIS SUPPLEMENT SUPERCEDES ALL PRIOR SUPPLEMENTS

                                The Munder Funds

                         Supplement Dated June 27, 2000

                      to Prospectus Dated October 26, 1999

                           Class A, B and C Shares of:

                             The Munder NetNet Fund

                             CLOSING OF NETNET FUND

         The Board of Directors of the NetNet Fund has determined  that it is in
the  best  interest  of   shareholders  to  close  the  Fund  to  new  accounts.
Accordingly,  as of April 17, 2000,  the NetNet Fund will only accept orders for
the  additional  purchase  of Fund shares by  shareholders  into  accounts  with
existing NetNet Fund positions.

                                CHANGE OF ADDRESS

The  section  entitled  "Your  Investment-How  to Reach the Fund by mail" in the
prospectus is hereby deleted and replaced with the following:  The Munder Funds,
c/o PFPC Global Fund Services, P.O. Box 60428, King of Prussia, PA 19406-0428.

              CHANGE OF NAME FOR FIRST DATA INVESTOR SERVICES GROUP

The name of First Data Investor  Services  Group has changed to PFPC Global Fund
Services.

                         POLICIES FOR EXCHANGING SHARES

The second  bullet  point in the section  entitled  "Your  Investment-Exchanging
Shares-Policies  for Exchanging  Shares" in the prospectus is hereby deleted and
replaced with the following:

o You may  exchange  Class C shares  of the Fund for  Class II  shares  of other
Munder Funds.

                          POLICIES FOR REDEEMING SHARES

The section entitled "Your  Investment-Redeeming  Shares-Policies  for Redeeming
Shares" in the prospectus is hereby deleted and replaced with the following:

o For  your  protection,  a  medallion  signature guarantee is required  for the
following redemption requests: (a) redemption proceeds greater than $50,000; (b)
redemption  proceeds not being payable to the  recordowner  of the account;  (c)
redemption  proceeds  not being  mailed to the address of record on the account;
(d) if the  redemption  proceeds are being  transferred  to another  Munder Fund
account with a different  registration;  (e) change in ownership or registration
of the  account or (f)  changes to banking  information  without a voided  check
being  supplied.  When the Fund  requires a  signature  guarantee,  a  medallion
signature  guarantee must be provided.  A medallion  signature  guarantee may be
obtained from a domestic bank or trust company, broker, dealer, clearing agency,
savings association,  or other financial institution which is participating in a
medallion program recognized by the Securities Transfer  Association.  The three
recognized  medallion programs are Securities  Transfer Agents Medallion Program
(STAMP),  Stock Exchanges  Medallion Program (SEMP) and New York Stock Exchange,
Inc. Medallion Signature Program (NYSE MSP). Signature guarantees from financial
institutions  which are not  participating  in one of these programs will not be
accepted.

                             REINVESTMENT PRIVILEGE

The paragraph  pertaining to the Reinvestment  Privilege in the section entitled
"Your Investment-Shareholder Privileges" in the prospectus is hereby deleted and
replaced with the following:


<PAGE>

Reinvestment  Privilege.  For  60 days  after you  sell shares  of the Fund, you
may reinvest  your  redemption  proceeds in shares of the same class of the SAME
Fund at NAV.  Any  CDSC  you  paid on the  amount  you are  reinvesting  will be
credited  to your  account.  You  may  use  this  privilege  once  in any  given
twelve-month period with respect to your shares of the Fund. You, your broker or
your financial  advisor must notify the Funds'  transfer agent in writing at the
time  of   reinvestment   in  order  to  eliminate  the  sales  charge  on  your
reinvestment.

                              SALES CHARGE WAIVERS

The first  sentence of Sales  Charge  Waivers-General  in the  section  entitled
"Distribution  Arrangements-Applicable  Sales  Charge  Class  A  Shares"  in the
prospectus is hereby deleted and replaced with the following:

We  will  waive  the initial  sales charge  on Class A shares  for the following
types of  purchasers  (the  word  "advisor"  in the  following  refers to Munder
Capital Management, the advisor to The Munder Funds).

                              RIGHT OF ACCUMULATION

The paragraph  pertaining to the Right of Accumulation  in the section  entitled
"Distribution  Arrangements-Applicable Sales Charge Class A Shares- Sales Charge
Reductions" in the prospectus is hereby deleted and replaced with the following:

o  Right of Accumulation.  You may add the value of any other Class A
   shares of  non-money  market  Munder  Funds you already own to the
   amount of your  next  Class A share  investment  for  purposes  of
   calculating the sales charge at the time of the current  purchase.
   You must notify your broker,  your financial advisor or the Fund's
   transfer agent to qualify.

                     CONTINGENT DEFERRED SALES CHARGE (CDSC)

The section  entitled  "Distribution  Arrangements-CDSC"  in the  prospectus  is
hereby deleted and replaced with the following:

You pay a CDSC when you redeem:

o Class A shares that were bought as part of an  investment of at
  least $1 million within one year of buying them;
o Class B shares within six years of buying them; and
o Class C shares within one year of buying them.

These  time  periods  include  the  time you  held Class B, Class C  or Class II
shares of another  Munder Fund which you may have exchanged for Class B, Class C
or Class II shares of the Fund you are redeeming.

The  CDSC  schedule for  Class B  shares  purchased  after  June 27, 1995 is set
forth below.  If you  acquired  Class B shares by  exchanging  shares of another
Munder  Fund  which  you  purchased  on or before  June 27,  1995,  consult  the
Statement of Additional  Information for the applicable CDSC schedule.  The CDSC
is based on the  original NAV at the time of your  investment  or the NAV at the
time of redemption, whichever is lower. Shares purchased through reinvestment of
distributions are not subject to CDSC.

                     Years Since Purchase                     CDSC
                     --------------------                     ----
                     First................................    5.00%
                     Second...............................    4.00%
                     Third................................    3.00%
                     Fourth...............................    3.00%
                     Fifth................................    2.00%
                     Sixth................................    1.00%
                     Seventh and thereafter...............    0.00%
<PAGE>

If  you  sell some  but not all of  your shares,  certain  shares not subject to
CDSC (i.e., shares purchased with reinvested  dividends) will be redeemed first,
followed  by shares  subject to the lowest CDSC  (typically  shares held for the
longest time).

For  example,  assume  an  investor  purchased 1,000  shares at $10 a share (for
a total cost of $10,000).  Three years later,  the shares have a net asset value
of $12 per share and during that time,  the  investor  acquired  100  additional
shares through dividend reinvestment.  If the investor then makes one redemption
of 500 shares (resulting in proceeds of $6,000, 500 shares x $12 per share), the
first 100 shares  redeemed  will not be subject  to the CDSC  because  they were
acquired  through  reinvestment of dividends.  With respect to the remaining 400
shares  redeemed,  the CDSC is charged at $10 per share  (because  the  original
purchase price of $10 per share is lower than the current net asset value of $12
per share).  Therefore,  only $4,000 of the $6,000 such  investor  received from
selling his or her shares  will be subject to the CDSC,  at a rate of 3.00% (the
applicable rate in the third year after purchase).

At  the  time  of  purchase  of Class  B shares,  the  Fund's  distributor  pays
sales  commissions  of 4.00% of the purchase  price to brokers that initiate and
are responsible for purchases of such Class B shares.

CDSC Waivers

We  will  waive  the  CDSC  payable  upon  redemptions  of  shares   which  you
purchased  after June  27,1995  (or  acquired  through an  exchange of shares of
another Munder Fund purchased after June 27, 1995) for:

o  redemptions  made  within  one  year  after  the  death of a  shareholder  or
registered  joint owner; o minimum  required  distributions  made from an IRA or
other retirement plan account after you reach age 70 1/2;
o involuntary redemptions made by the Fund;
o redemptions  limited to 10% per year of an account's net asset value if taken
by  Systematic  Withdrawal  Plan  ("SWP").  For  example,  if your balance  on
December  31st is  $10,000  you can  redeem up to $1,000  tha following year
free of charge through SWP.

We will waive the CDSC  payable upon  redemptions  of shares which you purchased
after December 1, 1998 (or acquired through an exchange of shares of another
Munder Fund purchased after December 1, 1998) for:

o  redemptions made from an IRA or other individual retirement plan
   account established through Comerica Securities,  Inc. after you
   reach age 59 1/2 and after the eighteen month anniversary of the
   purchase of Fund shares.

Consult the Statement of Additional  Information  for Class B CDSC waivers which
apply when you  redeem  shares  purchased  on or before  June 27,  1995 (or
acquired through an exchange of shares of another Munder Fund purchased on or
before June 27, 1995).

We will  waive  the CDSC  for  Class B shares  for all  redemptions  by Merrill
Lynch Plans if:

(i) the Plan is recordkept on a daily valuation basis by Merrill Lynch; or
(ii)the  Plan  is  recordkept  on a  daily  valuation  basis  by  an independent
    recordkeeper  whose services are provided through a contract or alliance
    arrangement with Merrill Lynch; or

(iii)the Plan has less than 500 eligible employees, as determined by the Merrill
     Lynch plan conversion  manager, on the date the plan sponsor signs the
     Merrill Lynch Recordkeeping Service Agreement.
<PAGE>



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