MainStay S&P 500 Index Fund Investor Class Fonds

The investment seeks investment results that correspond to the total return performance (reflecting reinvestment of dividends) of common stocks in the aggregate, as represented by the S&P 500® Index. The fund normally invests at least 80% of its assets (net assets plus any borrowings for investment purposes) in stocks as represented in the Standard & Poor's 500® Index in the same proportion, to the extent feasible. It may invest up to 20% of its total assets in options and futures contracts to maintain cash reserves, while being fully invested, to facilitate trading or to reduce transaction costs.