What does it mean when someone says the S&P 500 went up or down by X points? Points equal dollars. If the S&P 500 went up by 10 points yesterday, that means the weighted average market value of ...

The S&P 500 (SP500) (NYSEARCA:SPY) is heading into the last trading week of January, and the index is on the verge of claiming a positive first month of the new year. History suggests that this kind ...

Follow all the latest U.S. market action for Tuesday here as investors get ready for testimony from Fed Chair Jerome Powell, ...

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 ...

The NASDAQ-100 is widely followed as a measure mainly of the big tech and social media stocks that make up the index.