GATX Corporation leases, operates, manages, and remarkets assets in the rail, marine, and industrial equipment markets. The company operates through four segments: Rail North America, Rail International, Portfolio Management, and American Steamship Company (ASC). The Rail North America segment primarily leases railcars and locomotives. The Rail International segment leases railcars, as well as operates and manages railcars and fleets for third-party investors. The Portfolio Management segment provides leasing, asset remarketing, and management solutions for aircraft, railcars, and marine assets. The ASC segment operates a fleet of vessels that provide waterborne transportation of dry bulk commodities, such as iron ore, coal, limestone aggregates, and metallurgical limestone for steel makers, automobile manufacturing, electricity generation, and non-residential construction markets. GATX Corporation was founded in 1898 and is headquartered in Chicago, Illinois.