Principal Financial Group
Des Moines, IA, USA

The Progressive Corporation is one of the largest providers of car insurance in the United States. The company also insures motorcycles, boats, RVs and commercial vehicles, and provides home insurance through select companies. Progressive has expanded internationally as well, offering car insurance in Australia. The company was co-founded in 1937 by Jack Green and Joseph M. Lewis, and is headquartered in Mayfield Village, Ohio.