S&P 500
Region
United States
Exchange
Ticker
SPX
About S&P 500
The Standard & Poor's 500 is a market-capitalisation-weighted index of 500 leading publicly traded companies in the United States. Regarded as the best single gauge of US large-cap equities, the S&P 500 covers approximately 80% of available US market capitalisation and is widely used as a benchmark by institutional investors worldwide.
S&P 500 Price Chart
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Components
500 large-cap US companies selected by a committee based on market cap, liquidity, sector representation, and financial viability. Notable constituents include Apple, Microsoft, Amazon, Nvidia, and Alphabet.
Trading Hours
Regular session: 09:30–16:00 ET (Mon–Fri). Extended-hours futures trade nearly 24/5 via E-mini S&P 500 (ES) on CME Globex.
Fact Sheet
Launched in 1957 by Standard & Poor's. Weighted by free-float market capitalisation. Rebalanced quarterly. Maintained by S&P Dow Jones Indices.
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