MFS Mid Cap Value Fund - Class I (MCVIX)

This fund typically allocates a substantial majority—at least 80% of its net assets—to companies exhibiting medium market capitalizations. The fund's management defines these mid-cap entities as those with market values similar to the companies comprising the Russell Midcap® Value Index, based on their valuations over the prior 13 months at the time of investment. Furthermore, the portfolio is primarily composed of equity securities.