Largest property and casualty insurance companies in the United State, according to Beinsure, wrote more than $938 bn (+8.5%) in premiums. The Top 200 top p&c insurance companies accounted for approximately 96.15% of the total U.S. P&C industry premium, while others made up about 3.85%.
The list of top companies in the 2025 edition had some movement from the year before, with Nationwide P&C Group falling out of the top 10—moving from No. 9 to No. 11—and losing 9.9% in net premiums written to land at $17.22 bn. The report expects industrywide direct premiums written to grow just 6.8% in 2025—marking a five-year low and a 3-point decline from 2024.
Contributing factors include lower auto premiums, rate pressures in catastrophe-exposed commercial property lines, and broader economic uncertainty.
