The S&P 500 is a value weighted index of the prices of 500 large cap common stocks actively traded in the United States. The stocks included in the S&P 500 trade on either of the two largest American stock markets, the New York Stock Exchange and NASDAQ. The components of the S&P 500 are selected by committee.

Download the S&P 500 Fact sheet.

After the Dow Jones Industrial Average, the S&P 500 is the most widely followed index of large-cap American stocks. It is considered a bellwether for the American economy, and is included in the Index of Leading Indicators.

Some mutual funds, exchange traded funds, and other managed funds, such as pension funds, are designed so as to mimic the performance of the S&P 500 index.

The index is the best known of the many indices owned and maintained by Standard & Poor's, a division of McGraw-Hill. S&P 500 refers not only to the index, but also to the 500 companies whose common stock is included in the index. „S&P 500“ is often abbreviated as SPX or INX, and may be prefixed with a caret (^) or with a dollar sign ($). The S&P 500 index forms part of the broader S&P 1500 and S&P Global 1200 stock market indices.

Top 10 high-prices stocks included in the index

Symbol Company Sector Price
WPO Washington Post Consumer Discretionary 393.00
GOOG Google Inc. Information Technology 310.02
CME CME Group Inc. Financials 209.03
ISRG Intuitive Surgical Inc. Health Care 148.41
MA Mastercard Inc. Information Technology 143.68
AZO AutoZone Inc. Consumer Discretionary 105.76
AAPL Apple Inc. Information Technology 90.24
BCR Bard (C.R.) Inc. Health Care 82.91
EOG EOG Resources Energy 80.63
IBM International Bus. Machines Information Technology 80.33

Price last updated: November 14, 2008