The S&P 500 is one of the most widely followed stock indexes, and its performance is used as a benchmark for the stock market at large. Here's what it is, how it works, and why it's important.

The S&P 500 edged higher while the Nasdaq dipped after a volatile session on Tuesday as investors gauged inflation data and ...

US stocks jumped on Wednesday after consumer price data showed inflation continues to slow. Strong bank earnings also helped ...

Ellen Lindner / Investopedia When people talk about “the market,” they’re often referring to the performance of the S&P 500 index. Since 1957, this benchmark index has delivered an average ...

S&P 500 index funds like VFIAX and SWPPX can be an easy and inexpensive way to round out most investment portfolios. Many, or all, of the products featured on this page are from our advertising ...

But for many investors, S&P 500 index funds remain the overwhelming favorite when it comes to long-term investing. The S&P 500 index tracks the prices of the 500 largest U.S. public companies ...

That turned out to be dead wrong, and the S&P 500 (SNPINDEX: ^GSPC) is now on track to deliver one of its best years in modern history. Through Dec. 20, the broad market index is up 23% and ...

As a market technical analyst for 44 years (3/4 of my life), when asked to predict things like where the S&P 500 will be a year from now, I embrace the challenge. But I also want to cite a quote ...

picture alliance / Contributor / Getty Images The S&P 500 jumped 1.8% on Wednesday, Jan. 15, as several financial firms reported solid results and a downtick in core inflation revived rate-cut hopes.