largest credit card company
Top 10 Credit Card Issuers. Following is a list of largest credit card issuers in the United States ranked by purchase volume. American Express (or Amex) is the largest credit card lender in the US with over $519 billion. The company earned a record $5.9 billion in net income in 2014. Its market capitalization was nearly $80 billion on April 29, 2015.