The Equitable Building was completed on May 1, 1915, at an estimated cost of $29 million, . The Equitable Society itself occupied , a little more than 10% of the total floor area, on the sixth through eighth floors. Other early lessees included tenants as diverse as General Electric, the Federal Reserve Bank of New York, the Fidelity Trust Company, and American Smelting & Refining. The Equitable Building was also occupied by industrial concerns such as the American Can Company, Kennecott Copper Company, E. I. du Pont de Nemours, Goodyear Tire and Rubber Company, and Aluminum Company of America, as well as railroads such as Missouri Pacific Railroad, Union Pacific Railroad, and Southern Railway. The Equitable Building's other tenants included banks such as Barclays, Marine Midland Bank, and Mellon Bank; financial firms such as Kidder, Peabody & Co. and American Express; and the offices of New York attorney general Robert Abrams. Equitable Life itself only had its home office in the Equitable Building until 1924, when it moved to 393 Seventh Avenue (now 11 Penn Plaza).