LEADING WRITERS OF PRIVATE PASSENGER AUTO INSURANCE IN ARIZONA BY DIRECT PREMIUMS WRITTEN, 2011 (1)
Rank Group Direct premiums written ($000) Market share
1 State Farm Mutual Automobile Insurance  $560,885 17.2%
2 Farmers Insurance Group of Cos.  382,295 11.7
3 Progressive Corp.  333,317 10.2
4 Berkshire Hathaway Inc.  308,141 9.4
5 Allstate Corp.  301,176 9.2
6 USAA Insurance Group  231,368 7.1
7 American Family Mutual  213,180 6.5
8 Liberty Mutual  123,500 3.8
9 Hartford Financial Services  109,969 3.4
10 AAA Northern CA NV & Utah Insurance  71,665 2.2
(1) Before reinsurance transactions. Source: SNL Financial LC.