Normally investing at least 80% of assets in equity securities. Equity securities represent an ownership interest, or the right to acquire an ownership interest, in an issuer. Equity securities include common stocks (including depositary receipts evidencing ownership of common stock), preferred stocks and other preferred securities, convertible securities, rights and warrants, and other securities, such as hybrid securities and trust preferred securities, believed to have equity-like characteristics. Derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. Normally investing primarily in common stocks. Seeking to reduce the impact of industry weightings on the performance of the fund by considering each industry's weighting in the S&P 500® Index when allocating the fund's investments across industries. Investing in domestic and foreign issuers. Investing in either "growth" stocks or "value" stocks or both. Using quantitative analysis to evaluate growth potential, valuation, liquidity, and investment risk, along with fundamental analysis of factors such as each issuer's financial condition, its industry position, and market and economic conditions to select investments.