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The top five insurance companies in the ranking have an average private passenger auto market share of 12.72% as of December 31, 2024.
The combined direct premiums written by the top five was more than $228 billion, with more than $221 billion in direct premiums earned.
The rankings also measured factors including direct loss to earned premium (EP) ratio and direct losses and defense and cost containment (DCC) expenses to EP ratio.
Scroll through to see which insurance companies are in the top 20 and how they fared through the end of December 2024.
Source: National Association of Insurance Commissioners
Insurers with the largest private passenger auto market share
| Rank | Company | Market
share | YoY
change | Direct
premiums
written | Direct
premiums
earned | Direct
loss to
EP ratio | Direct
loss and
DCC to
EP ratio |
| 20 | Markel | 0.45% | 0.24% | $1,614,950,698 | $1,558,279,070 | 70.92 | 74.05 |
| 19 | The Hartford | 0.65% | -0.02% | $2,335,109,999 | $2,285,904,339 | 67.7 | 69.67 |
| 18 | Auto Club
Group
Michigan | 0.73% | 0.02% | $2,623,117,386 | $2,564,473,132 | 79.92 | 83.13 |
| 17 | Kemper | 0.83% | -0.10% | $2,961,550,274 | $2,991,412,709 | 57.8 | 60.66 |
| 16 | Sentry | 0.87% | 0.38% | $3,104,477,047 | $2,981,093,131 | 56.62 | 59 |
| 15 | Mercury | 0.94% | 0.05% | $3,371,806,198 | $3,259,393,260 | 61.97 | 65.26 |
| 14 | CSAA | 1.33% | 0.12% | $4,759,666,515 | $4,341,074,138 | 70.22 | 71.7 |
| 13 | Nationwide | 1.34% | -0.37% | $4,800,874,679 | $5,055,280,241 | 60.92 | 63.02 |
| 12 | Erie
Insurance | 1.40% | 0.06% | $5,007,234,077 | $4,652,937,712 | 82.06 | 83.78 |
| 11 | Auto-Owners
Insurance | 1.44% | 0.10% | $5,179,378,655 | $4,800,504,716 | 64.89 | 68.51 |
| 10 | American
Family
Insurance | 1.72% | -0.42% | $6,174,180,283 | $6,128,786,653 | 64.76 | 66.08 |
| 9 | Auto Club
Enterprises | 1.80% | 0.27% | $6,465,136,944 | $6,081,770,841 | 74.33 | 76.37 |
| 8 | Travelers | 2.00% | -0.08% | $7,184,379,064 | $7,003,218,963 | 61.03 | 63.78 |
| 7 | Liberty
Mutual | 3.27% | -0.93% | $11,741,470,804 | $12,656,807,288 | 57.42 | 59.75 |
| 6 | Farmers | 3.76% | -0.42% | $13,492,655,158 | $13,661,692,619 | 58.3 | 59.8 |
| 5 | USAA | 6.17% | -0.10% | $22,135,830,430 | $21,763,069,325 | 64.61 | 66.47 |
| 4 | Allstate | 10.19% | -0.18% | $36,581,811,847 | $35,617,593,273 | 65.85 | 67.64 |
| 3 | Berkshire
Hathaway | 11.64% | -0.67% | $41,764,021,113 | $41,327,519,797 | 65.72 | 67.15 |
| 2 | Progressive | 16.73% | 1.49% | $60,053,469,078 | $56,789,379,487 | 60.54 | 62.11 |
| 1 | State
Farm | 18.88% | 0.57% | $67,754,117,585 | $65,850,852,141 | 73.91 | 77.28 |
