iShares S&P 500 Index Fund Institutional Shares BSPIX NASDAQ

iShares S&P 500 Index Fund Institutional Shares is a feeder fund that invests substantially all of its assets in the S&P 500 Index Master Portfolio. The fund aims to track the performance of the S&P 500 Index by maintaining a portfolio composition that mirrors the index's weightings. At least 90 percent of the fund's assets are allocated to securities included in the S&P 500 Index, with each stock's allocation proportional to its representation in the underlying index. This institutional share class provides investors with a low-cost, diversified approach to equity market exposure through passive index tracking.