American Express Company (Amex) is an American bank holding company and multinational financial services corporation that specializes in payment cards.

Barclays plc is a British multinational universal bank, headquartered in London, England. Barclays operates as two divisions, Barclays UK and Barclays International, supported by a service company, Barclays Execution Services.

Capital One Financial Corporation is an American bank holding company specializing in credit cards, auto loans, banking, and savings accounts, with operations primarily in the United States. It is on the list of largest banks in the United States, is the third largest issuer of Visa and Mastercard credit cards and is one of the largest car finance companies in the United States.