A look at the shifts in market share as of June 2016 courtesy of CAR
The following are the latest movements and trends in the market share of the top ten private passenger automobile insurance companies in Massachusetts. The data is from March 2016, the latest month for which complete data is available. Our aim is to provide a snapshot of what is happening in the market so far this year coupled with a review of the overall shifts and trends that are happening within the private passenger automobile marketplace in the Commonwealth.
All data presented here is provided courtesy of the Commonwealth Automobile Reinsurers, the statistical agent for motor vehicle insurance in the Commonwealth of Massachusetts.
Graphs from June 2016 and June 2006 show market changes
Below the listing of the top 20 carriers by market share for June 2016. There are graphs showing the top ten writers by market share as of 2016. Please compare these market leaders with a similar graph from July 2005 to see how the Massachusetts automobile insurance market has shifted seven years into managed competition.
A look at the market share of the top 20 private passenger automobile insurers
Here is a look at the data on policy exposures statistically reported through March 2016; the most recent month for data available.
| Company Name | Exposures | Market Share |
| Commerce | 312,838 | 25.40% |
| Liberty Mutual | 144,977 | 11.77% |
| Safety | 126,302 | 10.26% |
| Arbella | 115,076 | 9.34% |
| GEICO | 102,396 | 8.31% |
| Plymouth Rock | 76,630 | 6.22% |
| Metropolitan | 50,506 | 4.10% |
| Amica Mutual | 39,303 | 3.19% |
| Hanover | 38,628 | 3.14% |
| USAA | 37,847 | 3.07% |
| Progressive | 35,140 | 2.85% |
| The Premier | 31,542 | 2.56% |
| Quincy Mutual | 23,218 | 1.89% |
| Allstate | 15,560 | 1.26% |
| Norfolk & Dedham Mutual | 14,295 | 1.16% |
| Vermont Mutual | 12,265 | 1.00% |
| National Grange | 12,128 | 0.98% |
| Encompass | 5,813 | 0.47% |
| Preferred Mutual | 5,366 | 0.44% |
| Occidental Ins | 4,934 | 0.40% |
| State Farm | 4,314 | 0.35% |
| Esurance | 4,042 | 0.33% |
| Mass Homeland | 3,522 | 0.29% |
| Electric | 3,470 | 0.28% |
| IDS | 3,191 | 0.26% |
| Green Mountain | 2,683 | 0.22% |
| Farm Family | 1,936 | 0.16% |
| Harleysville Worcester | 1,023 | 0.08% |
| Bankers Standard | 1,007 | 0.08% |
| PURE | 915 | 0.07% |
| American International | 621 | 0.05% |
A graphic comparison of the market share for the top 10 companies writing private passenger auto in Massachusetts
March 2016
For a quick comparison to last year, here is the same graph from March 2015:
March 2015
The top 10 private passenger auto insurance companies in Massachusetts a decade ago (2006)
Here is a look at the final top ten list from 2006. It is interesting to note that a majority of the top ten private passenger auto insurers that were in the top 10 a decade ago continue to dominate the market in 2016.
