Endurance Specialty Holdings Ltd. (Endurance Holdings) is a holding company. Through the Company's operating subsidiaries based in Bermuda, the United States and the United Kingdom, it focuses on underwriting specialty lines of personal and commercial property and casualty insurance and reinsurance on a global basis. The portfolio of specialty lines of business is organized into two business segments: Insurance and Reinsurance. As of December 31, 2012, Endurance Holdings' seven wholly owned operating subsidiaries were Endurance Bermuda, Endurance Reinsurance Corporation of America (Endurance U.S. Reinsurance), Endurance Worldwide Insurance Limited (Endurance U.K.), Endurance American Insurance Company (Endurance American), Endurance American Specialty Insurance Company (Endurance American Specialty), Endurance Risk Solutions Assurance Co. (Endurance Risk Solutions) and American Agri-Business Insurance Company. The Company operates in two business segments: Insurance and Reinsurance.