Signature and PIN-based debit and prepaid card issuers in the United States ranked 1 to 50 based on the dollar value of purchases at merchants in 2014 are listed on pages 10 and 11. Purchase volume on their consumer and commercial products counted here was generated through the Visa, MasterCard, and PIN-based regional networks. Not included are transactions and purchase volume generated by debit cards that operate on the ACH network, private label prepaid cards, cash withdrawals at ATMs, and cash back at merchants. Spending at merchants by cardholders of the 50 largest issuers amounted to $...