Strategy. Under normal circumstances, the Fund invests primarily in equity securities, or other investments with similar economic characteristics, of companies that have market capitalizations, at the time of purchase, in the range of companies in the Standard & Poor's 500 Index (the "Index"). Although expected to change frequently, the market capitalization range of the Index was approximately $5.3 billion to $3.3 trillion as of March 31, 2025. As such, the size of the companies in which the Fund invests may change. As long as an investment continues to meet the Fund's other investment criteria, as described below, the Fund may choose to continue to hold a security even if the company's market capitalization grows beyond the market capitalization of the largest … Show more… Under normal circumstances, the Fund invests primarily in equity securities, or other investments with similar economic characteristics, of companies that have market capitalizations, at the time of purchase, in the range of companies in the Standard & Poor's 500 Index (the "Index"). Although expected to change frequently, the market capitalization range of the Index was approximately $5.3 billion to $3.3 trillion as of March 31, 2025. As such, the size of the companies in which the Fund invests may change. As long as an investment continues to meet the Fund's other investment criteria, as described below, the Fund may choose to continue to hold a security even if the company's market capitalization grows beyond the market capitalization of the largest company within the Index or falls below the market capitalization of the smallest company within the Index. The Fund may invest up to 10% of its total assets in foreign equity securities. The Fund normally invests in common stocks. The Fund may from time to time emphasize one or more sectors in selecting its investments, such as the information technology sector. Generally, the Fund anticipates holding between 60 and 90 securities in its portfolio; however, the Fund may hold, at any time, more or fewer securities than noted in this range. In selecting investments, Wellington Management Company LLP (the "Subadviser") employs an active management strategy of fundamental bottom-up analysis along with risk management criteria in identifying opportunities and constructing the Fund's portfolio. The Subadviser seeks to identify companies with, among other attributes, improving quality metrics (e.g., financial stability, market positioning and strength of management team and governance), fundamental business momentum (e.g., growth in revenues, cash flows, and profitability), and attractive relative valuations. The Subadviser may sell a security when the security's price reaches a target set by the Subadviser or if the Subadviser believes that there is deterioration in the issuer's financial circumstances or fundamental prospects, or if other investments are more attractive, or for other reasons. Show less