The largest U.S. issuers of Visa and Mastercard credit cards and debit/prepaid cards based on purchases of goods and services generated by consumer card products in 2017 are shown in the table below. Not included in the ranking is purchase volume tied to commercial card products. The 50 largest issuers of credit cards in 2017 were listed in issue #1126. The 50 largest issuers of debit/prepaid cards in 2017 were listed in issue #1129. Those credit and debit/prepaid card rankings combined consumer and commercial card products (shown under All Purchase Vol. below). The largest issuers of Masterca...