SEI Institutional Investments Trust S&P 500 Index Fund Class A SPINX Strategy

The investment seeks results that correspond to the aggregate price and dividend performance of the securities in the S&P 500 Index. The fund invests substantially all of its assets (at least 80%) in securities listed in the S&P 500 Index, which is composed of approximately 500 leading U.S. publicly traded companies from a broad range of industries (mostly common stocks). The fund's investment results are expected to correspond to the aggregate price and dividend performance of the S&P 500 Index (the index) before the fees and expenses of the fund.