| Rank |
Group |
Direct premiums written (1) |
Market share |
| 1 |
State Farm Mutual |
$30,586,466 |
18.6% |
| 2 |
Allstate Corp. |
17,249,325 |
10.5 |
| 3 |
Berkshire Hathaway Inc. |
13,481,538 |
8.2 |
| 4 |
Progressive Corp. |
12,257,769 |
7.5 |
| 5 |
Zurich Financial Services Ltd |
10,442,100 |
6.4 |
| 6 |
Nationwide Mutual Group |
7,392,863 |
4.5 |
| 7 |
Liberty Mutual Holding Co. |
7,160,608 |
4.4 |
| 8 |
USAA Insurance Group |
6,747,371 |
4.1 |
| 9 |
Travelers Companies |
3,364,166 |
2.1 |
| 10 |
American Family Mutual Insurance Co. |
3,308,437 |
2.0 |
(1) Before reinsurance transactions, excluding state funds.
Source: SNL Financial LC. |