QCC uses updated NAIC network supplemental data to extend U.S. analysis, highlighting different strategies among leading operators. Hartford Steam Boberer led the accreditation segment with $75 million in premiums and a 26% share. In the main market, Chubb leads the top five operators, with the airline accounting for 30% of the market share, while the remaining line division is led by Starr and the top five carriers control 26%. Some insurance companies (such as Arch) spread exposure in multiple segments, while others (including elementary school students and Fairfax in surplus) focus on narrower dramas.
