The economy of Illinois is the fifth largest by GDP in the United States and one of the most diversified economies in the world. Fueled by the economy of Chicago, the Chicago metropolitan area is home to many of the United States' largest companies, including Abbott Laboratories, AbbVie Inc., Allstate, Baxter International, Boeing, Conagra, Crate and Barrel, Kraft Heinz, McDonald's, CNH Industrial, GE Healthcare, Aon PLC, Willis Towers Watson, Mondelez International, Motorola, United Airlines, US Foods, Walgreens, and more. The Chicago area is a global financial center and headquarters a wide variety of financial institutions including Citadel LLC, CNA Financial, Discover Financial Services, Morningstar, Inc., Nuveen, and more. Chicago is also home to the largest futures exchange in the wo