S&P 500 SPX
US · broad equity marketUSA · SPX
−1.80 % in chart
A benchmark for US equities
The S&P 500 follows approximately 500 large US companies. Weights use the market value of shares available for trading, so larger companies can have more influence. It is not a simple average of every company’s percentage change.
An index level is a calculated number of points, not a share price. A higher level than another index does not make the market more expensive. Use percentage changes over the same period in asset comparison.
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What this chart represents
The ^GSPC series shown here is a price index. It tracks share-price changes without adding reinvested dividends. A fund’s return can differ because of dividends, costs, replication and currency movements. The index and an ETF are different instruments.
Simple view selects a period; Pro selects the candle interval. Daily change compares the latest value with the previous session. The timestamp identifies the observation’s age; an available quote is not necessarily exchange realtime. We do not infer index-contract volume from this series.
The S&P 500 in its present form launched in March 1957. Earlier source history is not contemporaneous trading of today’s index; it includes historical and back-calculated figures. Monthly charts may extend the older segment by aggregating archived daily OHLC observations.
Putting the result in context
Nasdaq 100 selects non-financial Nasdaq-listed companies, while the Dow Jones uses a different number of companies and weighting method. Different performance can reflect composition rather than an incorrect quote.
Explore the stock overview or Microsoft for individual-company context. A company can rise or fall for its own reasons while an index combines many stocks. Displayed hours refer to the main US equity session; the index itself is not bought directly.
Author: D.M.Updated
Index value in points · main equity-market hours