Citigroup Inc. or Citi is an American multinational investment banking and financial services corporation headquartered in Manhattan, New York City. Citigroup was formed from one of the world's largest mergers in history by combining the banking giant Citicorp and financial conglomerate Travelers Group in October 1998 (announced on April 7, 1998).
Citi is organized into two major segments – Citicorp and Citi Holdings. Citicorp contains two core businesses, i.e. Global Consumer Banking and Institutional Clients Group, while Citi Holdings contains Citi's non-core businesses, i.e. Brokerage and Asset Management (formerly includes Smith Barney), Global Consumer Finance, and Citi's Special Asset Portfolios.