Sp500

S&P 500

The S&P 500 is a stock market index tracking the stock performance of 500 companies listed on stock exchanges in the United States that are considered to have large market capitalizations. The S&P 500 is a subset of the S&P 1500. It is maintained by S&P Dow Jones Indices and its components are selected by a committee. For a list of the criteria for addition to the index, see S&P 1500 § Selection criteria. The index is a public-float-weighted/capitalization-weighted index. The index includes approximately 83% of the total market capitalization of U.S. public companies, with an aggregate market capitalization of more than $61.1 trillion as of December 31, 2025. The median market capitalization of the components of the index is $41.8 billion and components range in market capitalization from $5.6 billion to $4.8 trillion.

Data Source : Wikipedia

• Entity:  Financial Index

• Foundation:  March 4, 1957
• Operator:  S&P Dow Jones Indices
• Exchanges:  Nyse, Nasdaq, Cboe Bzx Exchange
• Constituents:  503
• Type:  Large-Cap
• Market cap:  Us$70.3 Trillion, (As Of Aug 12, 2026)
• Weighting method:  Free-Float Capitalization-Weighted
• Related indices:  S&P 1500, S&P Global 1200, S&P 100
• Wikidata description:  American Stock Market Index
• Wikidata label:  S&P 500
• Wikidata aliases:  S&P 500, S&P, S&P 500 Component, S&P 500 Index, S & P 500, Spx, ^Gspc

• Related Topics:  Historical Components Of The S&P 500 - S&P Dow Jones Indices Updates The Components Of The S&P 500 Periodically, Typically In Response To Mergers And Acquisitions, Corporate Spin-Offs, Or In Conjunction With The Quarterly Rebalancing., Closing Milestones Of The S&P 500 - This Article Is A Summary Of The Closing Milestones Of The S&P 500 Index, A United States Stock Market Index., S&P Dow Jones Indices, American Stock Market Indices