The 65 largest owners of contracts with merchants for acceptance of American Express, Discover, Diners Club, JCB, Mastercard, Visa, and UnionPay credit, debit, and prepaid global brand cards as well as domestic-only debit cards with Interlink, Star, Nyce, Pulse, Accel, and other brands are ranked on pages 10 and 11. These merchant acquirers were led by the five largest U.S. owners based on transactions—Worldpay, First Data, Chase Merchant Services, Bank of America Merchant Services, and Global Payments. Transactions handled by that group totaled 88.76 billion last year, up 10.5% % over 2016....