Discover Financial Services, Inc. was an American financial services company best known for its Discover Card. Founded in 1985, the company offered a wide range of banking and payment services, including checking and savings accounts, personal loans, home equity loans, and credit cards. It owned and operated the Discover and Pulse networks, and owned Diners Club International. Discover Card is the third largest credit card brand in the United States, when measured by cards in force, with nearly 50 million cardholders. Discover was acquired by Capital One on May 18, 2025. As the result of the acquisition, all Discover Financial brands would offered as the Capital One brands and services. Wikipedia