NAIC 2025 Market Share Report | Prime 25 Medical Skilled Legal responsibility Insurers



The Nationwide Affiliation of Insurance coverage Commissioners has issued its annual Market Share Information Stories for each the Property & Casualty Insurance coverage Market, in addition to for the Life & Fraternal Insurance coverage Market. As in previous iterations, the information provided right here displays a compiled checklist of market share information based mostly upon filings of countrywide premium submitted to the NAIC from Property & Casualty insurers as reported on the State Web page of the NAIC’s annual assertion for insurers.

As soon as collected, the information is compiled right into a report itemizing the cumulative market share information for the seven main traces of insurance coverage in the USA: All traces; Personal Passenger Private Auto; Business Auto; Employees’ Compensation; Medical Skilled Legal responsibility; Householders’ Multi-Peril; and Different Legal responsibility (excluding auto legal responsibility).

With roughly 97.92% of P&C insurers reporting, the business recorded roughly $1.06 trillion in Direct Premiums Written in 2024. The highest 10 P&C insurers account for 51.40% of the entire market share, reflecting a continued focus of market share among the many largest carriers.

Personal passenger auto insurance coverage stays the dominant line of enterprise, with $344.11 billion in direct premiums written, representing roughly 35% of all reported P&C premiums.

Key takeaways from this 12 months’s Medical Skilled Legal responsibility Market Share Report

The next are three key takeaways from this 12 months’s market share stories courtesy of Chat GPT:

1. Berkshire Hathaway Dominates with Practically 18% Market Share

Berkshire Hathaway Group led the sector with $2.2 billion in direct premiums written, representing 17.72% of the entire market. Its dominant share is greater than 70% increased than its closest competitor, the Medical doctors Firm Group.

2. Market Share is Extremely Concentrated Amongst Prime Carriers

The highest 5 teams alone account for over 44% of the entire U.S. medical skilled legal responsibility insurance coverage market. This consists of Berkshire Hathaway, Medical doctors Co, CNA, ProAssurance, and MAG Mutual.

3. Premium Development Stays Concentrated Regardless of a Fragmented Tail

After the highest 10 teams, market share drops under 2% per group. The Twenty fifth-ranked firm, MICA Group, holds simply 0.73% of market share, illustrating how aggressive dynamics shift past the highest tier and the way smaller mutuals, RRGs, and specialty writers proceed to function in regional or area of interest areas.


The Prime 25 P&C Insurers by Countrywide Premium – Medical Skilled Legal responsibility Insurers

RankGroup/Firm IdentifyDirect Premiums WrittenDirect Premiums EarnedDirect Loss to EP Ratio (%)Market Share (%)Cumulative Market Share (%)
Top Insurer in the US, Insurance News Massachusetts and US Market Share1BERKSHIRE HATHAWAY GRP2,213,998,8442,180,963,41849.0017.7217.72
2DOCTORS CO GRP1,267,764,1641,233,116,52144.3510.1427.86
Top Insurer in the US, Insurance News Massachusetts and US Market Share3CNA INS GRP757,207,091726,112,02736.256.0633.92
4PROASSURANCE CORP GRP679,670,466687,649,92145.185.4439.36
5MAG MUT INS GRP599,176,531598,415,39752.834.7944.15
6COVERYS GRP476,478,279492,690,77554.363.8147.96
Top Insurer in the US, Insurance News Massachusetts and US Market Share7LIBERTY MUT GRP454,792,147413,955,83045.943.6451.60
8MCIC VT A RECIP RRG449,756,768449,759,650105.263.6055.20
9CURI HOLDINGS GRP411,919,973398,233,70853.443.3058.50
Agency Checklists, MA Insurance News, Mass. Insurance News, Chubb, Mass. insurance companies10CHUBB LTD GRP241,822,724232,631,44470.491.9460.43
11ISMIE GRP217,119,087213,398,93346.471.7462.17
Top Insurer in the US, Insurance News Massachusetts and US Market Share12WR BERKLEY CORP GRP199,690,592205,688,39953.521.6063.77
13COPIC GRP192,510,138187,465,58844.961.5465.31
14PRI GRP186,934,534178,353,50354.891.5066.81
Top Insurer in the US, Insurance News Massachusetts and US Market Share15FAIRFAX FIN GRP175,909,998162,239,84648.771.4168.21
16STATE VOLUNTEER MUT INS CO153,038,003150,757,20442.441.2269.44
17PHYSICIANS INS A MUT GRP149,167,486146,220,12756.841.1970.63
18CORE SPECIALTY INS HOLDINGS120,537,71186,191,614124.360.9671.60
Insurance News Massachusetts and US Market Share19NATIONAL GRP113,065,904109,623,75439.970.9072.50
20MARKEL GRP104,382,434101,897,02738.580.8473.34
Top Insurers in the United States21ARCH INS GRP103,876,206100,388,23237.680.8374.17
22NCMIC GRP98,467,19698,599,76131.380.7974.95
23MOUNTAIN LAUREL RRG INC92,926,00080,795,00062.690.7475.70
24MUNICH RE GRP92,625,166103,316,15869.470.7476.44
25MICA GRP91,402,56193,179,51944.170.7377.17
INDUSTRY TOTAL12,497,284,96212,200,800,23052.86100.00100.00

Previous NAIC Market Share Stories

For these focused on revisiting or evaluating this 12 months’s information with the NAIC Market Share Stories from previous years, hyperlinks to every of these stories are under:

Hyperlinks to our 2025 NAIC Market Share Stories

Hyperlinks to our 2024 NAIC Market Share Stories

Hyperlinks to our 2023 NAIC Market Share Stories



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