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.

By Saqib Iqbal Ahmed NEW YORK (Reuters) -For the first time in over a year, the U.S. stock market is in a correction. The question now is whether the slide is set to get worse. The benchmark stock ...

The S&P 500 index fell more than 10% from its record closing peak after U.S. President Donald Trump on Tuesday announced fresh tariffs on Canada, adding to investor unease that his trade policies ...

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 ...