The index has been on a roll, but will the party continue for much longer? The S&P 500 has long been the stock market's most followed and important index. Tracking 500 of the largest American ...

Investors keep pushing the S&P 500 index to fresh all-time highs that leave it looking both expensive and top-heavy, with just 22 stocks in the index comprising half of its weighting, according to ...

The S&P 500 finished the month of October on a positive note, ultimately finishing up 2.3% from September. Read more here.

The S&P 500 was created in 1957 to track the performance of America’s 500 largest companies, offering investors broad exposure to the U.S. economy. But somewhere along the way, it slowly transformed ...

The S&P 500 has advanced 10% year to date despite economic headwinds, slightly more than its return of 9.3% annually over the last four decades. The S&P 500 has dropped in 6 of the last 10 Septembers, ...