Under normal circumstances, the fund invests at least 80% of its net assets (including the amount of any borrowings for investment purposes) in equity securities of companies that have market capitalizations, at the time of purchase, in the range of companies in the Standard & Poor's (S&P) 500 Index (the index). It may invest up to 20% of its total assets in foreign securities. The fund normally invests in common stocks, preferred stocks, convertible securities, warrants and rights and may invest in exchange-traded funds.