American stock exchange situated in New York. AMEX was a mutual organization, owned by its members. Until 1953, it was known as the New York Curb Exchange. On January 17, 2008, NYSE Euronext announced it would acquire the American Stock Exchange for $260 million in stock. On October 1, 2008, NYSE Euronext completed acquisition of the American Stock Exchange. Before the closing of the acquisition, NYSE Euronext announced that the Exchange would be integrated with the Alternext European small-cap exchange and renamed the NYSE Alternext U.S. In March 2009, NYSE Alternext U.S. was changed to NYSE Amex Equities.