Argo Group International Holdings is a property and casualty insurance company that operates multiple segments, including excess and surplus lines; commercial specialty; Syndicate 1200; and international specialty. The vast majority of revenue generation occurs within the excess and surplus lines segment, which underwrites casualty, property, and professional liability coverage for various clients. Its Syndicate 1200 segment underwrites property, specialty, and non-U.S. liability contracts. Argo generates most of its revenue in the United States, followed by the United Kingdom and Bermuda.