Rank in Tennessee by market share:
1 State Farm 21.79%
2 Tennessee Farmers Insurance Cos. 16.4%
3 Berkshire Hathaway Inc. (Geico) 9.31%
4 Progressive 8.6%
5 Allstate Corp. 6.15%
6 USAA 5.47%
7 Liberty Mutual 5.1%
8 Nationwide 3.29%
9 Erie Insurance 2.93%
10 National General Holdings Corp. 2.21%
Source: Everquote