State Auto Financial Corporation is a property and casualty insurance holding company. The Company is engaged in writing personal, business and specialty insurance. Its segments include Personal Insurance Segment, Commercial Insurance Segment and Specialty Insurance Segment. Its Personal Insurance Segment include personal auto, homeowners and other personal; Commercial Insurance Segment include commercial auto, small commercial package, middle market commercial, workers' compensation and other commercial, and Specialty Insurance Segment include Excess & Surplus (E&S) property, E&S casualty and programs. State Auto Financial's subsidiaries include State Auto Property & Casualty Insurance Company (State Auto P&C), Milbank Insurance Company (Milbank) and State Auto Insurance Company of Ohio (SA Ohio), each of which is a property and casualty insurance company, and Stateco Financial Services, Inc., (Stateco), which provides investment management services to affiliated insurance companies.