- 1-day change
- YTD return
- 1-year return
- 5-year return, annualized
- 10-year return, annualized
- 20-year return, annualized
- 30-year return, annualized
- All-time high
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S&P 500
SPX · Index · S&P Dow Jones Indices
The S&P 500 tracks about 500 leading U.S. companies selected by a committee at S&P Dow Jones Indices, and covers roughly 80% of the market capitalization of U.S. equities. Constituents are weighted by float-adjusted market capitalization.
The index in its 500-stock form was introduced on March 4, 1957; earlier values come from a narrower Standard & Poor's predecessor index. To join, a company must meet size, liquidity and float requirements and have positive reported earnings, both over its latest four quarters combined and in its latest quarter. Its level reflects price changes only: dividends are not reinvested.