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MASSACHUSETTS INVESTORS GROWTH STOCK FUND
Supplement to the Current Prospectus
During the period from March 2, 1998, through May 29, 1998 (unless
extended by MFS Fund Distributors, Inc. ("MFD")) (the "Sales Period"), MFD will
pay EQ Financial Consultants, Inc., 100% of the applicable sales charge on sales
of Class A shares of the Fund sold by them during the Sales Period. In addition,
MFD will pay EQ Financial Consultants, Inc., an additional commission equal to
0.50% of the net asset value of all of the Class B shares of the Fund sold by
them during the Sales Period.
The date of this Supplement is March 2, 1998.
