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. It is considered to be one of the most widely-followed equity indices in the world and is often used as a benchmark for the overall performance of the US stock market. The index is calculated based on the market capitalization of the companies included in it, and it reflects the average performance of the largest US companies across a range of industries, including technology, finance, healthcare, consumer goods, and energy, among others. Investors often use the S&P 500 as a barometer of the US stock market's health and as a guide for their own investment decisions.

S&P 500

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