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.

Kostin boosted his S&P 500 target to 6,500 for year-end 2025, about 10% above current levels. He previously had set a ...

An S&P 500 index fund tracks the S&P 500, a market index that measures the performance of about 500 U.S. companies. Index funds, by definition, aim to mirror a particular market index, such as the ...