
Citigroup CEO Sanford Weill.
The first US bank with more than $1 trillion in assets, Citigroup and its myriad subsidiaries offer deposits and loans (mainly through Citibank), credit cards, investment banking, brokerage and a host of other retail and corporate financial services. The company has more than 3,000 bank branches and consumer finance offices in the US and Canada, plus an additional 1,500 locations in about 100 other countries.