American banking and financial services company formed through the December 2000 merger of J.P. Morgan & Co. and The Chase Manhattan Corporation (Chase Manhattan Corporation, The). It is headquartered in New York City.

The Morgan branch of the corporation traces its history to J.P. Morgan and Company, Inc. (established 1895), and Guaranty Trust Company of New York (1864), which merged in 1959. The bank was renamed Morgan Guaranty Trust Co. in 1969. In 1989 Morgan became a leading U.S. underwriter of corporate debt, and by the end of the 20th century it had become one of the world's most respected investment banking (investment bank) houses. See also J.P. Morgan (Morgan, John Pierpont); J.P. Morgan, Jr. (Morgan, John Pierpont, Jr.)

In the early 21st century the new firm combined Chase Manhattan's experience in personal and small business banking with J.P. Morgan's background in investment banking, government securities, and commercial banking. Bank One of Chicago merged with JPMorgan Chase in 2004. Most of Bank One's operations assumed the Chase brand name. In September 2008 the federal government seized the bank holding company Washington Mutual, Inc., and sold its banking assets to JPMorgan Chase.