American Express Company (Amex) is a multinational financial services corporation operating primarily in the payments and consumer finance sectors. Unlike open-loop networks such as Visa and Mastercard, American Express operates a closed-loop payment network, meaning it acts as the card issuer, the merchant acquirer, and the payment network simultaneously. This model allows the company to capture the full economic value of transactions, generating revenue primarily through discount revenue (merchant fees charged as a percentage of transaction value), net interest income from cardmember loans, and annual card fees. The company operates through segments including U.S. Consumer Services, Commercial Services, International Card Services, and Global Merchant and Network Services. Geographically, while the United States is its largest market, Amex has a significant global footprint, serving consumers, small businesses, and large corporations worldwide. Its competitive position is anchored by its premium brand image, a highly affluent and high-spending customer base, and robust loyalty and rewards programs, which incentivize card usage and drive merchant acceptance.
