Answer

The Standard & Poor's 500 is one of the best-known indices and one of the commonly used benchmarks for the stock market.

Go to the Business Library's Industry Information section and select:

Standard & Poor's NetAdvantage:  Select the Screening tab then Quick Screener.  Click the options next to Indices and select S&P 500. This will generate a list of the current members of the S&P 500 index. 

For more information on indices refer to the S&P Indices page.

For current and historical constituent lists of the S&P 500 go to Global Financial Data. Choose Constituent Membership from the left-hand menu, then:

• Category: Major US Indices
• Index: S&P 500 (note that there are various subsets of the S&P 500, as well as other S&P indices)
• For historical lists, select As of a Specific Date and enter the desired year.