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Broker World insurers
- Global and national commercial carriers 15
- Regional carriers 20
- Personal-lines carriers that also insure businesses 9
- Specialty and E&S insurers 31
- Workers' comp specialists and state funds 7
- Medical and professional liability specialists 3
- Niche and affinity insurers 9
- Small business specialists 12
- Cyber specialists 3
- Program carriers and fronting insurers 6
- Reinsurer-owned commercial insurers 5
| # | Insurer | Type | Commercial premiums (2025) | AM Best |
|---|---|---|---|---|
| 85 | Sutton NationalA-rated program carrier that issues admitted and surplus lines policies for program administrators and reinsurers; you reach it only through a program. | Program carriers and fronting insurers | $877.4 million | A- (Excellent), stable outlook |
| 88 | AccreditedOnex-owned program manager whose A- rated insurers issue admitted and surplus lines policies for MGAs in the U.S., UK and Europe; commercial auto leads. | Program carriers and fronting insurers | $781.5 million | A- (Excellent), stable outlook; Financial Size Category IX |
| 91 | SiriusPointBermuda specialty insurer and reinsurer whose U.S. business is written mostly through MGAs and program administrators on its admitted and E&S paper. | Specialty and E&S insurers | $719.5 million | A (Excellent), stable outlook |
| 92 | SCORFrench reinsurer whose U.S. primary arm writes large corporate risks through brokers and program and E&S business through MGAs, on GSNIC and GSINDA paper. | Reinsurer-owned commercial insurers | $711.6 million | A (Excellent), stable outlook |
| — | CoverWalletNew York insurtech agency founded in 2015, owned by Aon since January 2020. Its site now sends small business quote requests to Aon Affinity agents. | Small business specialists | — | — |
| — | EmbrokerDigital insurance broker and MGA for startups, tech companies and law firms. Its own programs are written on Everest National and Everspan paper. | Small business specialists | — | — |
| — | InsureonOnline independent agency in Chicago, owned by HUB International since 2022. Quotes small businesses with carriers such as The Hartford, Chubb and Hiscox. | Small business specialists | — | — |
| — | Lloyd'sLondon insurance market of about 100 syndicates, rated A+ by AM Best. U.S. firms reach it as surplus lines cover through brokers, wholesalers and coverholders. | Specialty and E&S insurers | — | A+ (Superior) |
| — | Simply BusinessOnline insurance agency owned by Travelers since 2017. Compares quotes from about 18 carriers, such as Travelers, Hiscox, biBERK and Markel, for small firms. | Small business specialists | — | — |
| — | VouchInsurance broker for startups, tech, life sciences and financial firms. Sold its Corix MGA and Vouch Insurance Company to Hiscox under a 2025 deal. | Small business specialists | — | — |
Ranked by 2025 U.S. commercial lines direct premiums written: NAIC 2025 market share data for 17 commercial lines (states and U.S. territories), summed by insurance group. A group's premium in a line where it is outside NAIC's top 125 is not counted. Seven groups are left out because a business cannot buy from them or their premium in these lines is mostly consumer coverage: USAA, CSAA, the Ohio Bureau of Workers' Compensation, Florida's Citizens, the Texas FAIR Plan and windstorm pool, Assurant and Generali. Brands without a rank are well-known companies inside these groups or outside the top 100.