1. State Farm
Direct Premiums Written: $65.6 billion
Market Share: 9.27%
2. Berkshire Hathaway
Direct Premiums Written: $46.1 billion
Market Share: 6.51%
3. Progressive Group
Direct Premiums Written: $39.2 billion
Market Share: 5.54%
4. Liberty Mutual
Direct Premiums Written: $35.6 billion
Market Share: 5.03%
5. Allstate
Direct Premiums Written: $35 billion
Market Share: 4.95%
6. Travelers Group
Direct Written Premiums: $28 billion
Market Share: 3.96%
7. USAA
Direct Written Premiums: $23.4 billion
Market Share: 3.32%
8. Chubb
Direct Written Premiums: $23.3 billion
Market Share: 3.30%
9. Farmers Insurance
Direct Written Premiums: $20.6 billion
Market Share: 2.92%
10. Nationwide
Direct Written Premiums: $18.4 billion
Market Share: 2.60%
11. AIG
Direct Written Premiums: $14 billion
Market Share: 1.98%
12. Zurich
Direct Written Premiums: $12.8 billion
Market Share: 1.82%
13. The Hartford
Direct Written Premiums: $12.6 billion
Market Share: 1.79%
14. American Family Insurance
Direct Written Premiums: $11.5 billion
Market Share: 1.63%
15. CNA
Direct Written Premiums: $11 billion
Market Share: 1.56%
16. Auto-Owners Group
Direct Written Premiums: $8.5 billion
Market Share: 1.21%
17. Assurant
Direct Written Premiums: $8.2 billion
Market Share: 1.16%
18. Erie Insurance
Direct Written Premiums: $7.4 billion
Market Share: 1.06%
19. Tokio Marine
Direct Written Premiums: $7.4 billion
Market Share: 1.05%
20. Fairfax Financial
Direct Written Premiums: $6.9 billion
Market Share: 0.99%
21. American Financial Group/Great American Insurance Group
Direct Written Premiums: $6.3 billion
Market Share: 0.90%
22. WR Berkley
Direct Written Premiums: $6.3 billion
Market Share: 0.89%
23. AXA
Direct Written Premiums: $6.1 billion
Market Share: 0.86%
24. Markel Corporation
Direct Written Premiums: $5.8 billion
Market Share: 0.83%
25. Allianz
Direct Written Premiums: $5.3 billion
Market Share: 0.76%