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www.spglobal.com

S&P 500® | S&PDow Jones Indices

The S&P500® is widely regarded as the best single gauge of large-cap U.S. equities. The index includes 500 leading companies and covers approximately 80% of available market capitalization.

seekingalpha.com

SP500S&P 500 Index - Seeking Alpha

Mar 9, 2026 · A high-level overview of the S&P500 Index (SP500). Get the latest S&P500 chart, news, and analysis, including analyst predictions and forecasts for today.

fred.stlouisfed.org

S&P 500 (SP500) | FRED | St. Louis Fed

4 days ago · View data of the S&P500, an index of the stocks of 500 leading companies in the US economy, which provides a gauge of the U.S. equity market.