General Motors is an American multinational corporation headquartered in Detroit that designs, manufactures, markets, and distributes vehicles and vehicle parts, and sells financial services, with global headquarters in Detroits Renaissance Center. It was founded by William C. Durant on September 16, 1908, as a holding company, and the present entity was established in 2009 after its restructuring. The company is the largest American automobile manufacturer and one of the worlds largest automobile manufacturers. At its peak, GM had a 50% market share in the United States and was the worlds largest automaker from 1931 through 2007.. As of 2020, General Motors is ranked #18 on the Fortune 500 rankings of the largest United States corporations by total revenue.