| Great West Casualty Company | 0.02 | 1 | $47,980,590 |
| Fremont Insurance Company | 0.03 | 6 | $209,549,897 |
| Pioneer State Mutual Insurance Company | 0.03 | 4 | $130,372,580 |
| Cincinnati Casualty Company, the | 0.03 | 1 | $35,290,806 |
| Auto Owners Insurance Company | 0.04 | 73 | $1,657,582,652 |
| Farm Bureau Mutual Insurance Company of Michigan | 0.04 | 4 | $97,580,493 |
| Cherokee Insurance Company | 0.04 | 2 | $53,975,223 |
| Allmerica Financial Benefit Insurance Company | 0.04 | 1 | $23,015,620 |
| Zurich American Insurance Company | 0.05 | 3 | $61,214,272 |
| Cincinnati Insurance Company, the | 0.05 | 2 | $44,211,951 |
| Northern Mutual Insurance Company | 0.05 | 1 | $19,449,753 |
| Frankenmuth Insurance Company | 0.06 | 14 | $249,538,440 |
| Michigan Insurance Company | 0.06 | 3 | $49,549,327 |
| Secura Insurance Company | 0.06 | 2 | $35,385,424 |
| Old Republic Insurance Company | 0.06 | 2 | $35,117,835 |
| SAFECO Insurance Company of America | 0.06 | 2 | $34,122,199 |
| Wolverine Insurance Company | 0.06 | 1 | $15,864,368 |
| Farm Bureau General Insurance Company of Michigan | 0.07 | 43 | $578,542,414 |
| Hartford Fire Insurance Company | 0.07 | 1 | $15,204,612 |
| Emcasco Insurance Company | 0.07 | 1 | $14,606,701 |
| Amica Mutual Insurance Company | 0.07 | 1 | $14,436,946 |
| Citizens Insurance Company of the Midwest | 0.08 | 54 | $643,021,008 |
| United Services Automobile Association | 0.08 | 7 | $92,897,478 |
| Allstate Property and Casualty Insurance Company | 0.08 | 7 | $82,553,994 |
| Liberty Surplus Insurance Corporation | 0.08 | 6 | $73,616,698 |
| Essentia Insurance Company | 0.08 | 3 | $38,285,548 |
| Michigan Millers Mutual Insurance Company | 0.08 | 2 | $26,657,444 |
| National Indemnity Company | 0.08 | 1 | $12,446,367 |
| Progressive Michigan Insurance Company | 0.09 | 88 | $968,481,527 |
| Auto Club Group Insurance Company | 0.09 | 13 | $143,503,737 |
| Trumbull Insurance Company | 0.09 | 4 | $46,922,881 |
| National Union Fire Insurance Company of Pittsburgh, Pa. | 0.09 | 2 | $23,427,729 |
| Sentry Insurance Company | 0.09 | 1 | $11,297,873 |
| Central Insurance Company | 0.09 | 1 | $11,185,855 |
| Hastings Insurance Company | 0.10 | 7 | $73,430,322 |
| Titan Insurance Company | 0.10 | 3 | $30,856,036 |
| Incline Casualty Company | 0.10 | 2 | $20,929,588 |
| U.S. Specialty Insurance Company | 0.10 | 1 | $10,453,521 |
| Westfield Insurance Company | 0.10 | 1 | $9,990,894 |
| State Farm Mutual Automobile Insurance Company | 0.11 | 216 | $1,985,541,936 |
| USAA Casualty Insurance Company | 0.11 | 26 | $236,896,345 |
| Truck Insurance Exchange | 0.11 | 10 | $94,152,362 |
| Property and Casualty Insurance Company of Hartford | 0.11 | 1 | $9,066,984 |
| Amerisure Mutual Insurance Company | 0.11 | 1 | $8,795,195 |
| Selective Way Insurance Company | 0.12 | 2 | $16,655,015 |
| Memberselect Insurance Company | 0.13 | 132 | $1,031,497,944 |
| Allstate Fire and Casualty Insurance Company | 0.13 | 64 | $475,438,248 |
| Philadelphia Indemnity Insurance Company | 0.13 | 3 | $23,063,627 |
| American Economy Insurance Company | 0.15 | 12 | $82,063,760 |
| Carolina Casualty Insurance Company | 0.15 | 1 | $6,471,991 |
| Progressive Marathon Insurance Company | 0.16 | 271 | $1,716,509,102 |
| Meemic Insurance Company | 0.17 | 60 | $348,545,649 |
| National General Insurance Online, Inc. | 0.18 | 5 | $27,857,135 |
| Michigan Automobile Insurance Placement Facility | 0.18 | 3 | $16,886,216 |
| Safeco Insurance Company of Illinois | 0.20 | 5 | $25,568,440 |
| Empire Fire and Marine Insurance Company | 0.20 | 1 | $4,923,844 |
| Selective Insurance Company of America | 0.21 | 2 | $9,741,195 |
| Farmers Insurance Exchange | 0.22 | 14 | $63,233,405 |
| American Family Connect Property and Casualty Insurance Company | 0.22 | 3 | $13,389,206 |
| Continental Casualty Company | 0.22 | 1 | $4,450,018 |
| LM General Insurance Company | 0.23 | 8 | $35,359,787 |
| State Automobile Mutual Insurance Company | 0.24 | 1 | $4,209,201 |
| Liberty Mutual Personal Insurance Company | 0.25 | 40 | $162,042,484 |
| ACE American Insurance Company | 0.25 | 2 | $7,901,421 |
| United States Fire Insurance Company | 0.25 | 1 | $3,967,145 |
| National General Insurance Company | 0.26 | 22 | $85,092,269 |
| American Family Home Insurance Company | 0.26 | 1 | $3,805,091 |
| USA Underwriters Insurance Company | 0.27 | 9 | $33,326,560 |
| American Select Insurance Company | 0.27 | 6 | $22,379,202 |
| Liberty Mutual Fire Insurance Company | 0.27 | 3 | $10,946,565 |
| Amerisure Insurance Company | 0.27 | 2 | $7,292,048 |
| American Modern Property and Casualty Insurance Company | 0.27 | 1 | $3,746,322 |
| Esurance Property and Casualty Insurance Company | 0.28 | 16 | $57,102,913 |
| Home-Owners Insurance Company | 0.28 | 4 | $14,108,503 |
| Grange Insurance Company of Michigan | 0.29 | 3 | $10,306,611 |
| Farmers Group Property and Casualty Insurance Company | 0.30 | 10 | $32,970,409 |
| Bristol West Preferred Insurance Company | 0.40 | 51 | $128,533,813 |
| Travelers Indemnity Company of America, the | 0.41 | 3 | $7,262,364 |
| Third Coast Insurance Company | 0.42 | 1 | $2,387,380 |
| Motorists Mutual Insurance Company | 0.44 | 1 | $2,276,010 |
| Government Employees Insurance Company | 0.46 | 45 | $98,840,976 |
| GEICO Indemnity Company | 0.47 | 19 | $40,587,513 |
| Hartford Insurance Company of the Southeast | 0.47 | 15 | $32,152,348 |
| AmGUARD Insurance Company | 0.48 | 1 | $2,096,475 |
| Hartford Accident and Indemnity Company | 0.52 | 1 | $1,908,383 |
| Repwest Insurance Company | 0.53 | 2 | $3,753,076 |
| GEICO General Insurance Company | 0.61 | 13 | $21,411,699 |
| Berkshire Hathaway Direct Insurance Company | 0.67 | 1 | $1,493,963 |
| State Farm Fire and Casualty Company | 1.34 | 3 | $2,244,149 |
| Farmers Direct Property and Casualty Insurance Company | 1.43 | 2 | $1,395,221 |
| Auto Club Insurance Association | 1.45 | 23 | $15,891,601 |
| Allstate Insurance Company | 1.78 | 15 | $8,408,774 |
| Citizens United Reciprocal Exchange | 1.84 | 189 | $102,967,412 |
| Nationwide Insurance Company of America | 1.84 | 2 | $1,088,345 |