Citibank is a bank of global importance, founded in 1812 . It was formerly known as City Bank of New York and First National City Bank of New York . Belongs to Citibank Citigroup , one of the largest in the world. In March 2007 , Citibank was the largest bank in the United States . The majority shareholder is Abu Dhabi Investment Authority with 4.9% stake since November 2007 . His second shareholder is the prince and businessman Saudi Al-Waleed bin Talal , who owns 4.4% of the company.