Policies are underwritten by Great American Insurance Company, Great American Assurance Company, Great American Alliance Insurance Company and Great American Insurance Company of New York, authorized insurers in all 50 states and the DC. About Great American Insurance Group Great American Insurance Group's roots go back to 1872 with the founding of its flagship company, Great American Insurance Company. Based in Cincinnati, Ohio, the operations of Great American Insurance Group are engaged primarily in property and casualty insurance, focusing on specialized commercial products for businesses. Great American Insurance Company has received an "A" (Excellent) or higher rating from the AM Best Company for more than 115 years and is currently rated "A+" (Superior). The members of Great American Insurance Group are subsidiaries of American Financial Group, Inc. (AFG), also based in Cincinnati, Ohio. AFG's common stock is listed and traded on the New York Stock Exchange under the symbol AFG.