Credit rating agency AM Best has extended Hadron group’s Financial Strength Rating of A- (Excellent), Financial Size Category VIII, to The Guarantee Company of North America USA (GCNA).Hadron, an insurance carrier focused on innovation in the delegated authority space, recently acquired GCNA from Atlantic Specialty Insurance Company, a subsidiary of Intact Financial Corporation.According to the announcement, this approval reflects AM Best’s recognition of Hadron’s consolidated capitalization, disciplined un ...