Strategy. Under normal circumstances, the Fund invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in equity securities issued by U.S. small- and mid-capitalization companies which Fund management believes have above-average earnings growth potential, and derivatives that have similar economic characteristics to such equity securities. Fund management generally considers small- to mid-capitalization companies to be those companies having market capitalizations within the range of companies comprising the Russell 2500 Growth Index. The Russell 2500 Growth Index measures the performance of the small to mid-cap growth segment of the U.S. equity universe. It includes those Russell 2500 companies with higher growth earning potential as defined by FTSE Russells leading style methodology. The Fund seeks … Show more… Under normal circumstances, the Fund invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in equity securities issued by U.S. small- and mid-capitalization companies which Fund management believes have above-average earnings growth potential, and derivatives that have similar economic characteristics to such equity securities. Fund management generally considers small- to mid-capitalization companies to be those companies having market capitalizations within the range of companies comprising the Russell 2500 Growth Index. The Russell 2500 Growth Index measures the performance of the small to mid-cap growth segment of the U.S. equity universe. It includes those Russell 2500 companies with higher growth earning potential as defined by FTSE Russells leading style methodology. The Fund seeks to buy primarily common stock but also can invest in preferred stock, convertible securities, warrants and other equity securities. From time to time the Fund may invest in shares of companies through new issues or initial public offerings (IPOs). The Fund may, when consistent with the Funds investment objective, buy or sell options or futures on a security or an index of securities (commonly known as derivatives). The primary purpose of using derivatives is to attempt to reduce risk to the Fund as a whole (hedge), but they may also be used to maintain liquidity and commit cash pending investment. Fund management also may, but under normal market conditions generally does not intend to, use derivatives for speculation to increase returns. Show less