The 61 acquirers shown here owned payment card acceptance contracts for US merchants. They acquired transactions from American Express, Discover, Diners Club, JCB, Mastercard, Visa and UnionPay credit, debit and prepaid cards. In addition to those global network brands, they acquired domestic-only debit brands including Interlink, Star, Nyce, Pulse and Accel. Acquirers ranked here also settle transactions on behalf of payment facilitators and aggregators such as Block, Stripe and PayPal as well as more than 1,000 independent sales organizations. Fiserv figures include its business from merc...