The Fund’s objective is capital appreciation, measured in U.S. dollars. The Fund invests primarily (at least 70%) in U.S. equity securities. The Fund may also invest in equity securities of non-US companies, including those located in developed and emerging markets. In selecting investments for the Fund, MFS is not constrained to any particular investment style. The Fund may invest in companies it believes to have above average earnings growth potential compared to other companies (growth companies), in companies it believes are undervalued compared to their perceived worth (value companies) or in a combination of growth and value companies. The Fund may invest in companies of any size.The Fund may invest a relatively large percentage of the Fund's assets in single issuer or small number of issuers, and/or in issuers in a single sector or small number of sectors.