Strategy. Effective June 10, 2026, the following paragraph is added as the first paragraph of this sub-section: MFS (Massachusetts Financial Services Company, the fund's investment adviser) normally invests at least 80% of the funds net assets in growth companies. Growth companies are companies that MFS believes have above average earnings growth potential compared to other companies. MFS considers a number of factors when determining a companys growth potential, including whether (i) the issuer is included in an index that is representative of growth companies; (ii) the issuer is classified as a growth company by an independent third party financial data provider; and/or (iii) the issuer exhibits the characteristics of a growth company, considering metrics such as historical and/or projected growth rates … Show more… Effective June 10, 2026, the following paragraph is added as the first paragraph of this sub-section: MFS (Massachusetts Financial Services Company, the fund's investment adviser) normally invests at least 80% of the funds net assets in growth companies. Growth companies are companies that MFS believes have above average earnings growth potential compared to other companies. MFS considers a number of factors when determining a companys growth potential, including whether (i) the issuer is included in an index that is representative of growth companies; (ii) the issuer is classified as a growth company by an independent third party financial data provider; and/or (iii) the issuer exhibits the characteristics of a growth company, considering metrics such as historical and/or projected growth rates relative to the applicable equity market. Growth companies tend to have stock prices that are high relative to their earnings, dividends, book value, or other financial measures. MFS normally invests the funds assets primarily in U.S. and foreign equity securities, including emerging market equity securities. Equity securities include common stocks, depositary receipts, and other securities that represent an ownership interest (or right to acquire an ownership interest) in a company or other issuer. Effective June 10, 2026, the following sentence is deleted in its entirety: MFS focuses on investing the funds assets in the stocks of companies it believes to have above average earnings growth potential compared to other companies (growth companies). MFS may invest the funds assets in securities of companies of any size. MFS normally invests the fund's assets across different industries, sectors, countries, and regions, but MFS may invest a significant percentage of the funds assets in issuers in a single industry, sector, country, or region. MFS generally invests the fund's assets in at least three different countries and invests a percentage of the fund's net assets in securities of foreign issuers equal to at least the lesser of 40% or the percentage of foreign issuers in the MSCI All Country World Growth Index less 15%. MFS uses an active bottom-up investment approach to buying and selling investments for the fund. Investments are selected primarily based on fundamental analysis of individual issuers. Quantitative screening tools that systematically evaluate issuers may also be considered. Effective June 10, 2026, the following sentence is added as the last paragraph of this sub-section: For purposes of the fund's 80% policy, net assets include the amount of any borrowings for investment purposes. Show less