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Citigroup is an American multinational that provides investment banking and financial services. It operates through two segments: Citicorp and Citi Holdings. The company has over 200 million customer accounts in more than 140 countries, with approximately 16,000 offices worldwide. Its financial services include consumer banking, securities brokerage and wealth management. Founded in 1815 as City Bank of New York, it is now headquartered in Manhattan.