Argo Group International Holdings Ltd. engages in the provision of underwriting property and casualty insurance and reinsurance products. It operates through the following segments: U.S. Operations, International Operations, and Run-off Lines. The U.S. Operations segment include distribution through retail, wholesale, and managing general brokers/agents in the specialty insurance market. The International Operations segment involves in the insurance risks through the broker market, focusing on specialty property insurance, property catastrophe reinsurance, primary/excess casualty, professional liability and marine, and energy insurance. The Run-off Lines segment comprises liabilities associated with discontinued lines previously underwritten by the insurance subsidiaries. The company was founded in 1957 and is headquartered in Pembroke, Bermuda.