<PAGE>
MFS(R) Union Standard(R) Equity Fund
Supplement to the Current Statement of Additional Information
This Supplement describes certain changes, effective immediately, to the
Fund's Statement of Additional Information.
The initial sales charge on Class A shares will be waived on
shares purchased using redemption proceeds from a separate institutional
account of Connecticut General Life Insurance Company with respect to which
MFS Institutional Advisors, Inc. acts as investment adviser. No commissions
will be payable to any dealer, bank or other financial intermediary with
respect to shares purchased in this manner.
The date of this Supplement is July 10, 1998 (as revised September 1, 2000).
