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NYSE / CBOE
United StatesSPX
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.
More United States Indices
NASDAQ 100
NDX · NASDAQThe NASDAQ 100 tracks the 100 largest non-financial companies listed on the NASDAQ exchange. It is one of the premier large-cap growth indices, dominated by technology, consumer services, and healthcare names. The QQQ ETF tracks this index and is among the most liquid ETFs globally.
Russell 2000
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Wilshire 5000
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S&P MidCap 400
MID · NYSE / NASDAQThe S&P MidCap 400 covers mid-sized US companies that sit below the S&P 500 but above the S&P 600 Small Cap index. Mid-cap stocks often offer a balance of growth potential and stability, making this index important for diversified portfolio construction.