S&P 500 Index
The S&P 500 Index is comprised of 500 of the largest U.S. companies and is considered a benchmark for not only the large-cap segment of the U.S. equities market but the broad U.S. market as well. Constituents of the S&P 500 must meet certain market capitalization, listing, liquidity and float requirements.
Other popular indices investors use to gauge the strength of the U.S. market include:
The S&P 500 is organized into a number of sectors and lists of companies in each of these sectors can be accessed through the links below: