SPX500 (SPX 500)

The SPX500, or S&P 500, is a leading American stock market index based on the market capitalizations of 500 large companies listed on the NYSE or NASDAQ. This index is widely regarded as the best single gauge of large-cap U.S. equities. It includes companies like Apple, Microsoft, and Amazon, covering about 80% of the American equity market by capitalization and providing a comprehensive view of the U.S. stock market.