Selective Insurance Group, Inc. NASDAQ: SIGI, is a regional insurance holding company based in Branchville, New Jersey, and provides property and casualty insurance products and insurance services to customers in the United States through its subsidiaries. Selective provides insurance, alternative risk management products and related services to businesses and individuals, and administers flood insurance policies for the National Flood Insurance Program. The Insurance Operations segment writes commercial lines and personal lines property and casualty insurance through independent insurance agents in 22 states in the Eastern and Midwestern regions of the United States.