SPX | A complete S&P 500 Index index overview by MarketWatch. View stock market news, stock market data and trading information.

S&P 500 Today: Get all information on the S&P 500 Index including historical chart, news and constituents.

Get S&P 500 Index (.SPX:INDEX) real-time stock quotes, news, price and financial information from CNBC.

.SPX: S&P 500 Index - Stock Price, Quote and News - CNBC

The Major Indices Page presents charts of the four major indices for your selected market (U.S. or Canada) for a quick visual on how each index has moved over the last week.

S&P 500 INDEXindex chart, prices and performance, plus recent news and analysis.

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The S&P 500® is widely regarded as the best single gauge of large-cap U.S. equities. The index includes 500 leading companies and covers approximately 80% of available market capitalization.

Realtime quotes for major US and global market indexes covering the Americas, Europe, Middle East, Africa, and Asia Pacific

Track S&P 500 Index (SPX) price, historical data, forecasts, and financial insights for informed investing decisions on MSN Money.

An index measures the performance of a basket of securities intended to replicate a certain area of the market such as the Standard & Poor's 500.

What Is an Index? Examples, How It's Used, and How to Invest