American Express is a global financial institution, operating in about 130 countries, that provides consumers and businesses charge and credit card payment products. The company also operates a highly profitable merchant payment network. Since 2018, it has operated in three segments: global consumer services, global commercial services, and global merchant and network services. In addition to payment products, the company's commercial business offers expense management tools, consulting services, and business loans.

PNC Financial Services Group is a diversified financial services company offering retail banking, corporate and institutional banking, asset management, and residential mortgage banking across the United States.

Citigroup is a global financial-services company doing business in more than 100 countries and jurisdictions. Citigroup's operations are organized into five primary segments: services, markets, banking, US personal banking, and wealth management. The bank's primary services include cross-border banking needs for multinational corporates, investment banking and trading, and credit card services in the United States.

Wells Fargo is one of the largest banks in the United States, with approximately $1.9 trillion in balance sheet assets. The company has four primary segments: consumer banking, commercial banking, corporate and investment banking, and wealth and investment management. It is almost entirely focused on the U.S.