List of S&P 500 companies

The S&P 500 is a stock market index maintained by S&P Dow Jones Indices. It comprises 503 common stocks which are issued by 500 sizeable-cap companies (including two share classes of stock from three of its component companies. The index includes around 80% of the American stock market by capitalization. It is weighted by free-float market capitalization. An updated weighting of each component is available online.

Overview§

The S&P 500 is a stock market index maintained by S&P Dow Jones Indices. It comprises 503 common stocks which are issued by 500 sizeable-cap companies (including two share classes of stock from three of its component companies (Alphabet, Fox Corporation and News Corp). The index includes around 80% of the American stock market by capitalization. It is weighted by free-float market capitalization. An updated weighting of each component is available online.

Selected changes to the list of S&P 500 components§

S&P Dow Jones Indices updates the components of the S&P 500 periodically, typically in response to acquisitions, or to keep the index up to date as several companies grow or shrink in value. Between January 1, 1963, and December 31, 2014, 1,186 index components were replaced by other components.