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MFS(R) Core Growth Fund
MFS(R) Special Opportunities Fund
MFS(R) Convertible Securities Fund
MFS(R) Emerging Markets Debt Fund
SUPPLEMENT TO THE CURRENT PROSPECTUS
AND STATEMENT OF ADDITIONAL INFORMATION
Effective October 1, 1998, each Fund will change the manner in which it
calculates its distribution rate. The new distribution rate calculation for each
class of a Fund's shares will be calculated by (i) annualizing the distributions
(excluding short-term capital gains) of the class paid for a stated period, (ii)
adding any short-term capital gains paid within the immediately preceding
twelve-month period; and (iii) dividing the result by the maximum offering price
or net asset value per share on the last day of the period.
The Date of this Supplement is October 1, 1998.
