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.

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Bank of America is one of the largest financial companies in the world. The company is primarily a U.S. retail and commercial bank, with a network of more than 4,000 branches across much of the country. The 2005 acquisition of MBNA made Bank of America the nation's largest credit-card lender. As such, trends in consumer interest rates, employment, income growth and borrowing patterns represent a significant risk to the company's earnings. The 2008 acquisition of Countrywide made BofA the country's largest mortgage company as well. BofA became a top-tier securities firm and retail broker with the acquisition of Merrill Lynch.

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.