S&P 500
S&P 500 — NYSE / Nasdaq
Benchmark index tracking 500 companies listed on NYSE / Nasdaq.
About the S&P 500
S&P 500 is the benchmark stock index of NYSE / Nasdaq, tracking 500 companies. It is free-float weighted: each company's weight depends on the share of its capital actually available for trading.
Characteristics
Price history
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Historical performance
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Calculated live from Yahoo Finance closing prices (unofficial public proxy) — may be temporarily unavailable or delayed.
Track S&P 500 in your portfolio
Add the S&P 500 (symbol ^GSPC) to your virtual portfolio to track its allocation, performance and your simulated gains/losses alongside your other positions.
Add S&P 500 to my portfolioIndex composition
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Approximate weightings (July 2026), for educational purposes. The S&P 500 tracks about 500 large US companies, reviewed quarterly by a committee. Official composition on spglobal.com.
What is the S&P 500?
The S&P 500 tracks about 500 large companies listed in the United States (NYSE and Nasdaq), weighted by free-float market capitalization. It represents about 80% of the total market capitalization of the US stock market and is the leading benchmark for measuring US stock performance worldwide.
How do I invest in the S&P 500?
Most individual investors access it through an ETF tracking the index (for example within a life insurance policy or retirement account in France), a low-cost and widely diversified option. It's also possible to invest through S&P 500 futures for more experienced traders, or by picking some of its 500 constituent stocks directly.
Which sectors dominate the S&P 500?
Technology accounts for about 34% of the index, led by Nvidia, Apple, Microsoft and Alphabet. The ten largest companies alone make up nearly 38% of its total value — an unprecedented level of concentration, comparable to that of the dot-com bubble in 2000. Financials (~13%) and healthcare (~10%) round out the top sectors.
What are the risks and limitations of the S&P 500?
Today's concentration in a handful of mega-cap technology stocks means an investor who thinks they're diversified by buying "the U.S. market" is actually carrying significant exposure to just a few companies. The index is also exclusively American: it offers no direct exposure to European or Asian markets, and its path remains highly sensitive to Federal Reserve policy decisions and the dollar.
How has the S&P 500 performed during past crises?
Between its October 2007 peak and its March 2009 low, the S&P 500 lost about 57% of its value — the worst U.S. drawdown since the 1930s — before ending 2008 down roughly 37%. The Covid-19 crash was the fastest in its history: about -34% between February 19 and March 23, 2020, in barely five weeks, followed by an equally rapid rebound that erased the losses within months. Both episodes illustrate a recurring pattern: violent declines that have historically been followed by new all-time highs, over a multi-year investment horizon.
Price and chart data fetched live from Yahoo Finance via an unofficial public proxy: it may be delayed, temporarily unavailable or inaccurate. Composition and weightings are provided for educational purposes and are not a substitute for an official source. Nothing on this page constitutes investment advice.