Biglari Holdings Inc is a holding company that owns subsidiaries in a range of businesses. The company's reportable segments include Restaurant Operations, Insurance Operations, and Oil and Gas Operations. Its restaurant operations include Steak n Shake and Western Sizzlin. Its insurance operations include First Guard, Southern Pioneer, and Biglari Reinsurance. Oil and gas operations include Southern Oil and Abraxas Petroleum. The company also reports segment information for Maxim. The majority of revenue is derived from the Restaurant Operations Segment.