Strategy. Massachusetts Financial Services Company (MFS or the Sub-Adviser) serves as the Funds sub-adviser. The Sub-Adviser is responsible for the day-to-day management of the Funds assets. The Fund, under normal circumstances, pursues its objective by investing at least 80% of its net assets in common stocks and other equity securities. Although the Fund primarily focuses on investing in U.S. companies, the Fund also may invest up to 25% of its assets in foreign equity securities. The Fund focuses on investing its assets in the stocks of companies that are believed to be undervalued compared to their perceived worth (value companies). Value companies tend to have stock prices that are low relative to their earnings, dividends, assets, or other financial measures. Although … Show more… Massachusetts Financial Services Company (MFS or the Sub-Adviser) serves as the Funds sub-adviser. The Sub-Adviser is responsible for the day-to-day management of the Funds assets. The Fund, under normal circumstances, pursues its objective by investing at least 80% of its net assets in common stocks and other equity securities. Although the Fund primarily focuses on investing in U.S. companies, the Fund also may invest up to 25% of its assets in foreign equity securities. The Fund focuses on investing its assets in the stocks of companies that are believed to be undervalued compared to their perceived worth (value companies). Value companies tend to have stock prices that are low relative to their earnings, dividends, assets, or other financial measures. Although the Sub-Adviser may invest the Fund's assets in securities of companies of any size, the Sub-Adviser primarily invests in securities of companies with large capitalizations. The Sub-Adviser normally invests the Funds assets across different industries and sectors, but the Sub-Adviser may invest a significant percentage of the Funds assets in issuers in a single industry or sector. 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 and their potential in light of their financial condition and market, economic, political, and regulatory conditions. Factors considered may include analysis of an issuer's earnings, cash flows, competitive position, and management ability. Quantitative screening tools that systematically evaluate an issuer's valuation, price and earnings momentum, earnings quality, and other factors may also be considered. Show less