MFS Blended Research Small Cap Equity Fund Class I

Over

The fund normally invests at least 80% of the fund's net assets in equity securities of issuers with small market capitalizations. The advisor generally defines small market capitalization issuers as issuers with market capitalizations similar to those of issuers included in the Russell 2000® Index over the last 13 months at the time of purchase. The fund may invest the fund's assets in foreign securities.