The American Express Company, also known as Amex, is an American multinational financial services corporation headquartered in Manhattan's Three World Financial Center in New York City, United States. Founded in 1850, it is one of the 30 components of the Dow Jones Industrial Average. The company is best known for its credit card, charge card, and traveler's cheque businesses. Amex cards account for approximately 24% of the total dollar volume of credit card transactions in the US.BusinessWeek and Interbrand ranked American Express as the 22nd most valuable brand in the world, estimating the brand to be worth US$14.97 billion. Fortune listed Amex as one of the top 20 Most Admired Companies in the World.The company's logo, adopted in 1958, is a Centurion whose image appears on the company's travelers' cheques, charge cards and credit cards.Early historyIn 1850, American Express was started as an express mail business in Buffalo, New York. It was founded as a joint stock corporation by the merger of the express companies owned by Henry Wells (Wells & Company), William G. Fargo (Livingston, Fargo & Company), and John Warren Butterfield (Wells, Butterfield & Company, the successor earlier in 1850 of Butterfield, Wasson & Company). Wells and Fargo also started Wells Fargo & Co. in 1852 when Butterfield and other directors objected to the proposal that American Express extend its operations to California.