Arch Capital Group Ltd., together with its subsidiaries, provides insurance and reinsurance products worldwide. It operates in two segments, Insurance and Reinsurance. The Insurance segment offers casualty; construction; executive assurance; healthcare; collateral protection, debt cancellation, and service contract reimbursement products; national accounts casualty; professional liability; programs; property, energy, marine, and aviation; surety; and travel and accident insurance products. It also provides other insurance products, such as excess workers compensation and employers' liability insurance coverages for qualified self-insured groups, associations, and trusts; captive insurance programs; and accident, disability, and medical plan insurance coverages for employer groups, medical plan members, students, and other participant groups. This segment markets its products through a network of licensed independent retail and wholesale brokers. The Reinsurance segment reinsures third party liability and worker’s compensation exposures; individual property risks that include personal lines and commercial property exposures; other specialty lines, including surety, accident and health, workers' compensation catastrophe, multi-peril crop, trade credit, and political risk; catastrophic perils, such as hurricane, earthquake, flood, tornado, hail, and fire; marine business, which includes coverage for hull, cargo, and transit and offshore oil and gas operations, as well as aviation business that comprises coverage for airline and general aviation risks; and non-traditional business to provide insurers with risk management solutions. This segment markets its reinsurance products through brokers, as well as directly with the ceding companies. The company was founded in 1995 and is headquartered in Hamilton, Bermuda.