The S&P 500 is a stock market index that tracks the performance of 500 large companies listed on stock exchanges in the United States of America (USA). It’s considered one of the best representations of the U.S. stock market and is widely used as a benchmark for the overall market’s health. The companies included in the S&P 500 are selected by a committee based on factors like market capitalization, liquidity, and sector representation. Because it covers a broad range of industries, the S&P 500 provides a diversified view of the U.S. economy. See also Nasdaq