State Auto Financial Corp. is a property and casualty insurance holding company, which engages in the provision of personal and commercial insurance for both the standard and nonstandard insurance market. It operates through the following segments: Personal Insurance, Commercial Insurance, and Specialty Insurance. The Personal Insurance segment comprises of personal auto, homeowners, farm and ranch, and other personal insurance. The Commercial Insurance segment covers commercial auto; small commercial package; middle market commercial; workers' compensation and other commercial insurance. The Specialty Insurance segment involves E&S property, E&S casualty, and programs. The company was founded in 1990 and is headquartered in Columbus, OH.