S&P 500

The Standard and Poor's 500, or simply the S&P 500, is a stock market index tracking the stock performance of 500 leading companies listed on stock exchanges in the... Wikipedia

  • Foundation:  March 4, 1957
  • Operator:  S&P Dow Jones Indices
  • Exchanges:  NYSE, Nasdaq, Cboe BZX Exchange
  • Constituents:  503
  • Type:  Large-cap
  • Market cap:  US$57.401 trillion, (as of August 29, 2025)
  • Weighting method:  Free-float capitalization-weighted
  • Related indices:  S&P 1500, S&P Global 1200, S&P 100
  • Website:  spglobal.com/sp-500
  • Data source:  DuckDuckGo