Wells Fargo & Company (NYSE: WFC) is an American multinational diversified financial services company with operations around the world. Wells Fargo is the fourth largest bank in the U.S. by assets and the largest bank by market capitalization. Wells Fargo is the second largest bank in deposits, home mortgage servicing, and debit cards. In 2011, Wells Fargo was the 23rd largest company in the United States. Wells Fargo is headquartered in San Francisco, California, but has major “hubquarters” in other cities throughout the country. In 2007 it was the only bank in the United States to be rated AAA by S&P. The firm’s primary U.S. operating subsidiary is national bank Wells Fargo Bank, N.A., which designates its main office as Sioux Falls, South Dakota. Wells Fargo in its present form is a result of an acquisition of San Francisco-based Wells Fargo & Company by Minneapolis-based Norwest Corporation in 1998 and the subsequent 2008 acquisition of Charlotte-based Wachovia. In 2012, Wells Fargo had more than 9,000 retail branches and 12,198 automated teller machines in 39 states and the District of Columbia. It has over 270,000 employees and over 70 million customers.