S&P 500

S&P 500 Overjive, CC BY-SA 4.0

American stock market index

The S&P 500 is a stock market index tracking the stock performance of 500 leading companies listed on stock exchanges in the United States. It is one of the most commonly followed equity indices and includes approximately 80% of the total market capitalization of U.S. public companies, with an aggregate market cap of more than $61.1 trillion as of December 31, 2025.

Also known as...S&P, S&P 500 Component, S&P 500 Index, S & P 500, SPX, and ^GSPC
Business US & Canada
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