The American Express Company, often abbreviated Amex, AmEx, AX or Amexco, is a global provider of financial services based in New York City, USA. The company is best known for its charge card, credit card, and traveler's cheque businesses.
As of March 2026 American Express has a market cap of โน19.386 Trillion. This makes American Express the world's 78th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.
On Mar 8th, 2026 the market cap of American Express was reported to be: