<PAGE>
WINTHROP OPPORTUNITY FUNDS
WINTHROP DEVELOPING MARKETS FUND AND WINTHROP INTERNATIONAL EQUITY FUND (THE
'FUNDS')
SUPPLEMENT DATED APRIL 8, 1996 TO PROSPECTUS DATED FEBRUARY 28, 1996
As of April 8, 1996, the initial sales charge will be waived for sales of
Class A shares of the Funds on behalf of certain retirement plan accounts. To
institute this change subparagraph (6) will be added in the first paragraph
under 'Sales at Net Asset Value' on page 13:
(6) shares purchased for the following types of retirement plan
accounts: (i) retirement plans qualified under section 401(k) of the Code;
(ii) plans described in section 403(b) of the Code and (iii) deferred
compensation plans described in section 457 of the Code.
Class B shares of the Funds will no longer be available for sale to these
types of retirement plan accounts.
<PAGE>