Standard & Poor’s 500 Index

The S&P 500 or Standard & Poor’s 500 Index is a market-capitalization-weighted index of the 500 largest U.S. publicly traded companies. The index is widely regarded as the best gauge of large-cap U.S. equities. Other common U.S. stock market benchmarks include the Dow Jones Industrial Average or Dow 30 and the Russell 2000 Index, which represents the small-cap index—Read more at Investopedia. Kenton, Will. “S&P 500 IndexStandard & Poor’s 500 Index.” 18 May 2019