Top specialty insurance brokers in the United States, ranked by ChatGPT answers

If the company has meaningful aviation exposure in the U.S., I would not treat this as a conventional commercial-insurance broker selection. I’d compare brokers with demonstrated aviation-market access, aviation claims expertise, and experience with the particular exposure—aircraft, airline/charter operations, MRO, airport/FBO, aerospace products, drones/AAM, or space.

Brokers I would put on the shortlist

Broker	Why compare them	Particularly compelling for
Aon	Very deep dedicated aviation practice—Aon reports 120+ aviation specialists globally, with U.S. hubs including New York, Chicago, Dallas and Los Angeles. It also combines aviation broking with analytics, claims advocacy, captives and other risk-transfer capabilities.	Large/complex aviation programs, airlines, aerospace manufacturers, airports, MRO, leasing, multinational operations
Marsh / Marsh Aviation	Strong choice for large, sophisticated programs where global market access and broader risk-management resources matter.	Large airlines, aerospace, airports, multinational programs and complicated corporate risk portfolios
Arthur J. Gallagher & Co.	One of the strongest U.S. aviation comparisons. Gallagher has a dedicated aerospace/aviation practice spanning airlines, airports, corporate aircraft, MRO, manufacturers, drones and space; its specialty operation reports 600+ aerospace specialists globally.	U.S. aviation businesses, general/corporate aviation, aviation businesses that also need broad commercial P&C
McGriff	Genuine aviation specialty practice with 30+ years of experience. It specifically offers program analysis, market representation, alternative risk financing, safety/loss control, SMS support, claims advocacy and contract review.	Middle-market and larger aviation risks, rotor/fixed wing, airlines, airports and MRO
USI Insurance Services	Particularly interesting for a U.S.-based company wanting aviation expertise integrated with a broader corporate insurance program. Its aviation team includes pilots, former aviation underwriters, attorneys and risk professionals.	Corporate aviation, airports, flight schools, MRO, air carriers, air taxi and aerospace/manufacturing risks
Lockton	A particularly interesting new entrant to the U.S. aviation-broker comparison: Lockton launched a dedicated national U.S. Aviation Practice in August 2026, while already having aviation expertise globally.	Companies wanting an independent/private broker and a potentially differentiated market approach
Marsh McLennan Agency	Worth separating from Marsh itself. MMA has a dedicated U.S. aviation practice and emphasizes former pilots/underwriters, aviation market relationships, claims advocacy and proprietary solutions.	Middle-market U.S. companies with aviation exposure rather than a purely aviation-industry enterprise

My practical shortlist

For a substantial U.S. corporate aviation risk, I'd probably solicit proposals from:

1. Aon
2. Gallagher
3. Marsh
4. McGriff
5. USI
6. Lockton

Then decide whether the company's particular risk warrants adding a smaller aviation specialist.

The reason I'd include both the giants and the independent/specialist-oriented firms is that aviation insurance is a relatively concentrated specialty market. The important question isn't merely "Who can quote aviation?" but which broker will give us the strongest access to the relevant underwriters, negotiate the wording and structure intelligently, and advocate effectively if there is a major loss?

For example, Aon says its aviation claims team has recovered more than $1 billion in aviation claims settlements since 2017. Gallagher, meanwhile, highlights dedicated aviation claims advocacy and an aviation claims specialist with 25+ years of industry experience. Those capabilities can matter considerably more than a small difference in quoted premium.

One important wrinkle: Gallagher's aviation footprint

If you're comparing older lists, be careful with AssuredPartners Aerospace. Its aviation operation is now under the Gallagher name; AOPA announced in April 2026 that the aviation team would officially operate as Gallagher. So I would not treat AssuredPartners Aerospace and Gallagher as two independent alternatives in an RFP.

What I'd test in the RFP

Rather than asking each broker simply for a premium indication, I'd make them answer the same questions:

• Which aviation insurers will you approach, and which will you deliberately exclude?
• What is your direct/broker relationship with each relevant aviation market?
• Who will actually lead the account and negotiate with underwriters?
• What percentage of the proposed program will be lead vs. follow capacity?
• What aviation claims resources will be assigned to us?
• Give examples of similar U.S. accounts you've placed.
• Show proposed primary/excess liability structure, hull deductibles and major sublimits.
• Identify material war, terrorism, cyber, pollution, products, non-owned aircraft and contingent liability issues.
• How will you coordinate aviation coverage with the company's general liability, workers' compensation, property, cyber, D&O and other corporate programs?
• What alternative risk structures—captives, large retentions, structured programs—would you consider at our size?
• Provide a coverage comparison/wording matrix, not just premium.

For a company with aircraft plus substantial operational/product exposure, my first three meetings would probably be Aon, Gallagher and Marsh, with McGriff or Lockton as an important independent comparison. For a middle-market company with a relatively modest aviation component, I'd put considerably more weight on McGriff, USI, Gallagher and MMA.

If you tell me the company's exposure—e.g. corporate aircraft, charter/Part 135, airline, MRO, FBO/airport, aerospace manufacturing, drone/AAM, or simply non-owned aircraft exposure—I can narrow this to a 3–5 broker RFP shortlist and rank them by fit.

Worked for 12s

1. Searching the web
2. I’ll focus on U.S.-based or U.S.-active specialty brokers with explicit commercial capabilities in marine, energy, and/or environmental risks, and separate broad platforms from true niche specialists.
3. Searching the web
4. Searching the web
5. Searched 17 websites

Yes. If by “place” you mean brokers with demonstrable commercial insurance placement capability—rather than insurers/MGAs—the U.S. market has a fairly clear group of specialists.

Strongest candidates

Broker	Marine	Energy	Environmental	Positioning
McGriff	✓	✓	✓	Particularly strong in energy, marine, ports/terminals and infrastructure
Amwins	✓	✓	✓	Major specialty/wholesale platform with dedicated practices
RT Specialty / Ryan Specialty	✓	✓	✓	Major wholesale broker; especially strong for complex E&S placements
EPIC Insurance Brokers & Consultants	✓	✓	✓	Specialist retail broker with dedicated Energy & Marine and Environmental practices
Lockton	✓	✓	✓	Large independent specialty broker; strong complex/global commercial risks
Gallagher	✓	✓	✓	Large retail broker with dedicated Marine and Environmental capabilities
Aon	✓	✓	✓/related	Global specialty broker, particularly strong in large energy/infrastructure and marine risks
Marsh	✓	✓	✓	Global specialty broker with substantial U.S. Marine, Energy and Environmental practices
USI / IGP Specialty	✓	✓	✓	Specialty/wholesale platform with explicit Ocean Marine, Energy and Environmental capabilities

1\. McGriff — especially relevant is one of the more interesting names if you're looking for a genuinely specialist commercial broker rather than simply a large generalist.

Its Energy practice says it has 125+ dedicated professionals and more than 40 years of energy experience, covering upstream, midstream, downstream, power, utilities and renewables.

Its Marine practice covers vessel operators, tug/harbor operations, shipyards, ports and terminals, marine contractors, dredgers, barge operators and logistics/shippers, with P&I, hull, pollution, terminal operators liability, cargo/stock throughput and builders risk among its offerings.

It also has a dedicated Environmental practice covering, among others, energy, ports, mining and manufacturing.

Best fit: energy companies, marine operators, ports/terminals, infrastructure and environmentally exposed industrial businesses.

2\. Amwins is arguably one of the strongest specialty/wholesale candidates.

Amwins explicitly lists Energy and Environmental as specialty practices and has marine capability through Amwins Global Risks and its U.S. brokerage operation.

Its Energy practice covers offshore/onshore energy, marine employers liability, pollution liability and environmental impairment liability. Its Environmental practice reports $580 million of annual premium placements and 250+ environmental insurance professionals.

Amwins also acquired Roberts Armytage & Partners, a specialist in upstream energy and marine Lloyd's broking, strengthening its energy/marine proposition.

Best fit: difficult-to-place E&S, energy, offshore, marine and environmental risks; particularly where London-market access is useful.

3\. RT Specialty / Ryan Specialty is another major wholesale specialist.

Its Marine operation explicitly handles commercial marine, including blue-water and brown-water risks, terminals, P&I, marine liability, hull, cargo, offshore equipment and professional/pollution packages.

Its Energy practice covers upstream, midstream, downstream, mining and alternative energy, with contractors pollution liability, environmental impairment liability, marine employers liability, marine GL and bumbershoot among its capabilities.

It also maintains dedicated Environmental and Pollution capabilities.

Best fit: retail brokers looking for wholesale placement of complex energy/marine/environmental accounts.

4\. EPIC has unusually explicit overlap among the three sectors.

Its Energy & Marine practice handles onshore/offshore energy and includes P&I, charterers liability, marine liability, seepage/pollution, environmental and offshore construction/decommissioning. Its clients include oil & gas, pipelines, terminals, petrochemical companies, utilities and renewable-energy producers.

Its separate Environmental practice handles site and service exposures, including power & energy, brownfields, industrial risks, contractors and global programs.

Its Marine practice covers hull, P&I, terminal operators, charterers, ship repairers, pollution, cargo and stock throughput.

Best fit: large commercial/industrial accounts where you want a specialist retail broker with significant technical expertise.

5\. Lockton has dedicated Marine & Cargo, Energy and Environmental capabilities.

Its dedicated Lockton Marine operation covers hull, cargo and liability and has specialist expertise spanning ports, shipbuilding, project risk, charterers and commodity trading. It says it places nearly $1 billion of global marine premium.

Best fit: complex multinational commercial clients, marine/logistics, ports, energy and bespoke risk-transfer structures.

6\. Gallagher has a dedicated Marine Insurance practice serving shipping, cargo, ports and offshore energy.

Its environmental capability is particularly relevant to marine clients: Gallagher has specialist Environmental brokers with experience in environmental consulting/underwriting and explicitly handles environmental impairment liability for marinas and other marine businesses.

Best fit: commercial marine, ports/marinas, offshore energy and businesses needing marine + environmental expertise.

7\. Aon is particularly strong at the upper end of the commercial market.

Aon's Energy practice includes well-control/OEE and seepage & pollution, marine liability, charterers, P&I and global programs. Its Marine practice covers shipowners/operators, shipyards, ports/terminals, marine construction, subsea operators and logistics.

Its U.S. renewables practice has also handled major offshore-wind placements, combining renewable-energy, offshore and marine expertise.

Best fit: large energy, infrastructure, renewable-energy and multinational marine accounts.

8\. Marsh has longstanding dedicated Marine, Energy and Environmental specialty practices. Its U.S./Canada Marine, Cargo & Logistics practice provides transactional and advisory services to maritime, cargo and logistics clients.

Marsh's energy work also incorporates marine cargo/equipment transit and environmental insurance for major renewable-energy projects.

Best fit: very large corporate and multinational risks, particularly energy, infrastructure and global marine programs.

9\. USI / IGP Specialty has a specialty/wholesale operation, IGP Specialty, that explicitly lists Energy, Environmental and Ocean Marine among its industries.

Its Fort Worth operation, for example, offers an Energy & Environmental specialty program including contractors pollution liability, environmental impairment liability and inland marine.

Best fit: middle-market and specialty accounts, particularly through the wholesale/program channel.

• * *

If you're looking for the most specialist brokers

I would narrow the market differently depending on the purpose:

• Energy + Marine: McGriff, Amwins, EPIC, Lockton
• Marine + Environmental: McGriff, EPIC, Gallagher, Lockton
• Energy + Environmental: McGriff, Amwins, RT Specialty, EPIC
• Large/global energy & infrastructure: Aon, Marsh, Lockton, Gallagher
• Wholesale/E&S placement: Amwins, RT Specialty, USI/IGP
• Ports, terminals, offshore and marine infrastructure: McGriff, EPIC, Lockton, Gallagher, Aon

One important distinction: RT Specialty, Amwins and IGP are principally useful as wholesale/specialty-market platforms, whereas McGriff, EPIC, Lockton, Gallagher, Aon and Marsh can operate as the primary retail broker/adviser for the commercial insured. That distinction matters if you're trying to identify brokers who can actually win and control the client relationship, rather than simply provide wholesale capacity.

If you're doing this for market mapping/business development, I can also produce a more useful 30–40 firm U.S. broker landscape, ranked by marine / energy / environmental specialization, with HQ, key U.S. offices, approximate size, retail vs wholesale status, target client segment, and relevant practice/contact names.

Yes. In the U.S., the brokers you are generally looking for are wholesale/specialty brokers that access the Excess & Surplus (E&S) market. They specialize in risks that admitted/standard commercial insurers may decline because of unusual exposures, loss history, catastrophe exposure, difficult classes, high limits, or unusual coverage requirements.

Major U.S. E&S / surplus-lines brokers

Broker	Particularly useful for
Amwins	Broadest general-purpose option; difficult property, casualty, construction, transportation, professional lines, environmental, excess/umbrella and other specialty risks
CRC Group	Large national wholesale platform with extensive E&S and specialty-market access
RT Specialty	Property, casualty, excess, construction, cyber, environmental, healthcare, manufacturing, transportation and professional lines
Burns & Wilcox	Particularly strong in hard-to-place property, casualty, professional liability, personal specialty, environmental, marine and other E&S classes
\*\*Risk Placement Services (RPS)	Commercial property/casualty, healthcare, transportation, construction, environmental and other difficult-to-place accounts
\*\*Hull & Company	Commercial and personal E&S, marine, property/casualty, builders risk, inland marine, difficult GL/products liability and excess workers' comp

A few standouts

Amwins is probably the first place I'd look for a broad, difficult commercial account. It describes its brokerage operation specifically as handling "difficult placements and unique opportunities across all lines," and has hundreds of brokerage teams nationally.

RT Specialty is another particularly broad option. Its current broker/product directory covers everything from construction, casualty and commercial excess to cyber, environmental, energy, healthcare, manufacturing, transportation and workers' compensation. It explicitly operates as a wholesale distributor rather than a consumer-facing insurer.

Burns & Wilcox is a strong choice when the problem is genuinely unusual or specialized. Its E&S operation handles a wide range of specialty classes, including professional liability, environmental, marine, cyber and difficult property/casualty exposures.

RPS is particularly interesting for difficult commercial accounts because it combines wholesale brokerage with MGA/program capabilities. RPS explicitly says it has placed accounts that other markets could not, including difficult healthcare risks, and identifies loss history, business class and location as common reasons accounts move into E&S.

Hull & Company has a particularly traditional E&S orientation. Its wholesale operation serves all 50 states and specifically identifies difficult-to-insure general liability and products liability as specialties, along with excess workers' compensation, builders risk, inland marine and commercial property/casualty.

What kinds of risks do these brokers handle?

Typical examples include:

• Commercial property in wildfire, hurricane, flood or other CAT-exposed areas
• Businesses with significant prior losses or adverse loss history
• High-hazard construction and contracting
• Commercial auto/trucking and difficult fleet risks
• Restaurants, bars, hospitality and other challenging occupancies
• Product liability and difficult manufacturing exposures
• Environmental/pollution risks
• Cyber and other emerging exposures
• Professional liability and management liability
• Large excess/umbrella towers
• Businesses in classes that standard carriers have exited
• Unusual or rapidly changing operations
• Risks requiring manuscript wording or nonstandard coverage

The fundamental distinction is that E&S is not simply "insurance for bad risks." It gives underwriters substantially more flexibility to price, structure and customize coverage when an admitted carrier's standard form or underwriting appetite doesn't work. RPS, for example, notes that E&S is commonly used when a risk falls outside a standard market's appetite because of its class, loss history or start-up status.

One important caveat: most of these are wholesale brokers, so you generally approach them through a retail insurance agent/broker rather than buying directly as the insured. RT Specialty explicitly states that it provides wholesale brokerage to agents and brokers and does not solicit insurance from the public.

If you tell me what kind of commercial risk you have (industry, state, approximate revenue/insured value, and why the standard carriers are declining it), I can narrow this to the 3–5 wholesalers most likely to have an appetite for that specific risk.

Yes. If by “publish the industries and classes of risk they write” you mean a U.S. specialty/wholesale broker publicly lists its target industries and, ideally, specific classes, products, or risk types on its website, there are several strong examples.

Broker	Industries publicly listed	Specific classes / risks publicly listed	Disclosure quality
Amwins	Construction, energy, environmental, healthcare, hospitality, life sciences, manufacturing/distribution, public entity, real estate, transportation	Yes — its underwriting pages drill down to programs such as crane & rigging, demolition contractors, dump trucks, freight brokers, home health, intermodal transportation, renewable energy, etc.	Very high
RT Specialty	Agribusiness, aviation, construction, energy, financial institutions, healthcare, hospitality, life sciences, manufacturing, private equity, public entity, real estate, retail, sports & entertainment, transportation, etc.	Yes — exceptionally detailed. Binding appetite includes bars/taverns, restaurants, hotels, habitational, manufacturers, contractors, roofers, trucking, garages, vacant property, builder's risk and others.	Very high
CRC Group	Publishes industry and practice information through CRC Specialty and its various specialty platforms	Yes, although the information is more distributed across its specialty, industry, product and program pages than RT Specialty's	High
NSM Insurance Brokers	Behavioral healthcare/human services, nonprofits, private equity/M&A, higher education, real estate/construction, manufacturing/wholesale/distribution, school bus/motorcoach, technology	Yes, through its specialty-industry programs and coverage descriptions	High
Brown & Brown	Agriculture, A&E, aviation, construction, dealer services, education, energy, entertainment, financial services, fine art, healthcare, hospitality, marine, nonprofit, PE, public sector, real estate, technology/data centers, tribal, wineries	Generally yes, with coverage/practice descriptions beneath the industries	High
Gateway Specialty Insurance	Allied healthcare, nonprofits, human/social services, sports & entertainment, technology	Yes — e.g., allied health, nonprofit, human/social services, sports/events, technology E&O	High for its niches
Diversified Insurance Industries	Child care, construction, defense, education, funeral homes, healthcare, hospitality, life sciences, manufacturing, nonprofits, professional services, restaurants, security, technology	Publishes specialty insurance suites associated with each industry	High for its target markets

The two clearest benchmarks

1\. RT Specialty — probably the best example if you're looking for actual class appetite.

RT publishes an “Industries” taxonomy covering 20+ industries and a separate “Products” taxonomy covering classes such as casualty, construction, cyber, energy, environmental, healthcare, marine, professional liability, property, transportation, workers' comp, etc.

More importantly, its Binding Authority page gets down to the level of individual classes. For example, its published appetite includes:

The two clearest benchmarks

More importantly, its Binding Authority page gets down to the level of individual classes. For example, its published appetite includes:

• Bars / taverns / liquor
• Restaurants, including liquor
• Day care
• Habitational
• Manufacturing
• Hotels/motels
• Builder's risk
• Coastal property
• Vacant property
• Artisan/general contractors
• Roofers
• Specialty contractors
• Trucking
• Auto repair/dealers
• Contractors' equipment

That makes RT particularly useful if you're trying to determine “What risks does this broker actually want?” rather than simply “What industries does this broker know?”

2\. Amwins — probably the broadest publicly searchable taxonomy.

Amwins explicitly describes its platform as covering niche industries and specialty classes. Its industry page identifies construction/builder's risk, energy, environmental, healthcare, hospitality, life sciences, manufacturing/distribution, public entity, real estate and transportation.

Its underwriting-program directory is even more granular: it lists risk groups such as auto dealers, community associations, construction, education, energy & renewables, environmental, equine/canine/livestock, healthcare, hospitality/events/entertainment, manufacturing/distribution, marine/logistics, management liability, professional, public entity, real estate, recreation, recycling, transportation and workers' comp, followed by individual programs.

CRC Group is also worth including

CRC describes itself as an independent specialty brokerage and underwriting distributor and says its specialty brokerage operation can identify capacity across 650 carriers. Its current site separates P&C products and P&C industries, making it another useful source for mapping specialty appetite.

The distinction I'd make is that CRC's public information is less neatly organized as an explicit “appetite guide” than RT Specialty's. Its industry/product information is nevertheless substantial.

A useful distinction

There are actually three levels of public disclosure among specialty brokers:

1. Industry directory — “We serve healthcare, construction, energy, etc.”
2. Class/product directory — “We write healthcare, cyber, casualty, property, transportation, etc.”
3. Actual appetite/class list — “We write assisted living, med-spas, roofers, restaurants with liquor, vacant properties, dump trucks, etc.”

If your objective is to build a database of specialty brokers by class of risk, I'd concentrate on brokers that reach level 3. RT Specialty is an especially good example; Amwins is also unusually granular because of its underwriting-program directory.

I would not count specialty insurers such as Skyward Specialty or Ascot in a broker-only list, even though they publish detailed industry appetites, because they are carriers rather than brokers. For example, Skyward publishes specific sectors such as renewable energy, power generation, mining, rare earths/precious metals, and crane & rigging.

If you're using this for market mapping/prospecting, I can take this one step further and produce a 50–100 broker table with columns for broker, HQ, wholesale vs. retail, industries, specific classes, E&S/admitted, geographic footprint, and link to the broker's published appetite page.

Yes. If by “underwriting authority” you mean a broker/MGA has delegated authority to quote, bind and/or issue policies on a carrier’s paper, rather than merely having an appointment or access to a carrier, the U.S. market is considerably narrower.

I would put the following firms on the shortlist based on publicly available evidence as of 2026:

Broker / MGA	Specialty	Evidence of delegated authority	Carrier / capacity evidence	U.S. reach
Preferred Aviation Underwriters (DOXA)	Aviation ground risks	Strong — says it has full in-house authority from submission through quote, bind and issue	Its claims materials identify AIG, Chubb and American Southern among carrier relationships; exact current binder is not publicly identified	All 50 states
Triad Oilfield Underwriters / Revau	Upstream oil & gas	Strong — Lloyd's coverholder with delegated underwriting authority	Lloyd's capacity / specialty markets; acquired by Revau in Feb. 2026	U.S. upstream
Starwind Marine + Energy / CRC Group	Energy, marine, bulk liquids	Very strong — Lloyd's coverholder; $250M 2026 binding authority for oil, gas, petrochemicals, chemicals and renewables	Multiple Lloyd's syndicates	U.S. and international
Global Special Risks (Ryan Specialty)	Upstream energy / E&P	Strong — documented full underwriting/binding authority for its Upstream Solutions package; current materials continue to describe GSR as an underwriting manager	London and domestic markets; historic authority specifically backed by Lloyd's	U.S./Canada
NARDAC / Amwins Underwriting	Energy & infrastructure / renewables	Strong — MGA underwriting authority; began underwriting battery-storage risks with delegated capacity	Eight A-rated Lloyd's syndicates for its BESS facility	Global, including U.S.
WestCongress Insurance Services	Energy casualty	Strong — underwriting personnel evaluate, rate, quote and bind under binding-authority guidelines	Champlain/WestCongress insurance platform	Nationwide
Arlington/Roe	Aviation and other specialty lines	Moderate — established MGA/wholesale aviation underwriting operation; aviation available nationwide	Multiple company/E&S markets, but public materials don't identify a current aviation binder by carrier	Nationwide
DOXA Aviation	Aviation ground-side	Strong at platform level — DOXA describes its MGA/MGU businesses as having delegated underwriting authority and specifically identifies aviation	Various admitted/E&S carrier relationships	Nationwide

The clearest matches

1\. Preferred Aviation Underwriters (PAU) is probably the cleanest aviation example. PAU explicitly says it writes ground-side aviation in all 50 states and has “full in-house underwriting and policy issuance authority”, keeping the process from quote through bind and issue in-house.

Its carrier relationships include AIG, Chubb and American Southern, although PAU does not publicly spell out which carrier grants which particular underwriting authority.

2\. Starwind Marine + Energy is an especially strong energy example. It is a Lloyd's coverholder and announced that effective January 1, 2026 its binding authority for bulk liquids increased to $250 million, covering oil, gas, petrochemicals, chemicals and renewables, through relationships with several Lloyd's syndicates. Lloyd's' own directory also identifies the Starwind entities as U.S. coverholders for onshore/offshore energy property.

3\. Triad Oilfield Underwriters, now part of Revau, is another very clean match. Revau's 2026 acquisition announcement describes Triad as a Houston MGA/wholesale broker and specifically says that, as a Lloyd's coverholder, Triad holds delegated underwriting authority for complex upstream oil & gas and marine risks.

4\. Global Special Risks (GSR), part of Ryan Specialty, has unusually explicit historical evidence. Its Upstream Solutions Energy Package was established with full underwriting authority, allowing GSR to underwrite, quote and bind North American E&P business from Houston, backed by London-market underwriters. Current GSR materials still characterize it as an underwriting manager specializing in upstream energy, with programs supported by London and domestic markets. A current program listing also identifies a GSR energy program as having in-house rating/binding authority with Lloyd's capacity.

5\. NARDAC is particularly interesting if you're including renewable energy/infrastructure rather than just oil & gas. It is an energy/infrastructure broker and MGA and has publicly announced delegated underwriting capacity for battery-energy-storage projects from eight A-rated Lloyd's syndicates, with $50 million per location.

An important distinction

I would not automatically include large aviation brokers such as Aon, Marsh, Gallagher or WTW simply because they have aviation practices and extensive carrier appointments. A carrier appointment gives a broker market access; it does not necessarily mean the broker can underwrite or bind on the carrier's behalf.

The distinction is important because a genuine delegated authority/binding authority permits the intermediary to enter insurance contracts within defined parameters. Lloyd's describes a coverholder as an entity authorized under a formal Binding Authority agreement to enter contracts on behalf of a syndicate.

Likewise, Arlington/Roe unquestionably operates as an MGA/wholesale broker and has a nationwide aviation specialty, but I would classify its specific carrier-issued aviation underwriting authority as less publicly verifiable than PAU's.

My practical shortlist

If your objective is to identify potential competitors, acquisition targets, distribution partners, or carrier-authorized underwriting platforms, I'd divide the universe this way:

Aviation — highest-confidence

• Preferred Aviation Underwriters / DOXA
• DOXA's aviation underwriting operations
• Potentially Arlington/Roe, but verify the actual carrier binder before treating it as delegated authority

Energy — highest-confidence

• Starwind Marine + Energy / CRC
• Triad Oilfield Underwriters / Revau
• Global Special Risks / Ryan Specialty
• NARDAC / Amwins
• WestCongress

There are additional MGAs and program administrators that likely qualify, but the carrier, syndicate, authority limits and effective dates are often not disclosed publicly. In fact, New York's regulation requires binding-authority agreements to specify the classes, limits, geographic scope and insurer contact, but the filed agreements themselves are confidential.

If you want, I can take this one step further and build a much more comprehensive U.S. market map—say 25–50 firms—with columns for specialty, carrier/syndicate, authority type, limits, states, premium size, ownership, and whether the firm is a true MGA/MGU versus a wholesale broker.

Yes. I found several U.S. specialty/wholesale brokers and related specialty firms that publicly explain at least part of how claims are handled on non-standard or specialty policies. The clearest examples are:

• CRC Specialty — Particularly useful for E&S/non-standard commercial risks. CRC says claims should generally be reported directly to the carrier according to the policy, provides carrier-specific reporting contacts, and says its brokers and underwriters remain available to help throughout the claims process.
• RSUI / its wholesale broker network — RSUI explains that the broker can help file a claim, while the policy identifies the applicable claims administrator. It also emphasizes that claims contacts in the policy documentation control.
• Colony Specialty / Argo — Its claims instructions explicitly tell policyholders and retail agents/brokers to report claims promptly to the general wholesaler, after which Colony contacts the policyholder upon receipt of the first notice of loss.
• Specialty Insurance Group / SWIS — This wholesale broker describes itself as handling non-standard, complex accounts and accessing specialized markets. Its public material is more focused on placement than claims, so it is a weaker match if your main criterion is a detailed claims explanation.
• HCP National — A specialty medical-malpractice broker that explicitly says it accesses both standard and non-standard markets, including difficult/high-risk medical risks. Its public material establishes the non-standard placement role, although it provides less detail about the subsequent claims-handling mechanics.
• Kelly Insurance Group — An independent specialty brokerage that specifically markets itself around “hard-to-place,” “non-standard,” and high-exposure risks. Again, its public material is stronger on placement than on explaining the claims lifecycle.

The strongest sources for how claims actually work

If by “explain how claims are handled” you mean who receives the first notice of loss, who adjusts the claim, who makes the coverage decision, and what the broker does afterward, the most useful material I found is actually from specialty claims organizations and carriers rather than retail brokers.

For example, Lloyd's tells U.S. policyholders to contact their agent/broker or the party named in the policy as responsible for claims. CRC Specialty similarly explains that the policy's claims-reporting provisions govern and that its brokers can assist during the process.

There is also a particularly explicit example from Specialty Claims Management, which handles non-standard personal auto programs. It describes a dedicated unit and identifies the types of claims it handles—collision, comprehensive, property damage, bodily injury, PIP, medical payments, rental reimbursement, subrogation and salvage.

Bottom line: if you're looking for brokers whose websites educate a policyholder about the claims process, rather than simply saying “call us if you have a claim,” CRC Specialty and Colony Specialty are among the better examples I found. If you tell me what you mean by non-standard policy—e.g. E&S commercial, non-standard auto, professional liability, high-risk property, marine, or specialty personal lines—I can identify 5–10 U.S. brokers with the clearest claims-handling explanations and compare exactly what each says about FNOL, adjusters, coverage decisions, broker involvement, and disputes.

Worked for 8s

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Yes. I found several U.S.-serving specialty/wholesale brokers that publicly describe what they need in a submission and how quickly they say they can respond or quote.

Broker / platform	Submission requirements they publish	Stated quote / response speed	Best fit
Amwins	For Amwins InstantQuote, retail partners answer one unified set of questions rather than separate carrier applications; prohibited classes are screened early. The platform can then generate carrier-specific applications.	Firm, bindable quotes from multiple carriers within minutes for eligible small/middle-market professional-lines risks.	Professional liability, cyber, D&O, EPL, Tech E&O and other professional lines
Pathpoint	Submission is completed online; requirements vary by product. Pathpoint advises providing correctly completed subjectivities plus recent updates, website links, financial records and other information that fills gaps.	Instant-eligible submissions can quote in minutes. Pathpoint publishes state-level performance data; for example, its current Missouri data shows 71.4% instant-quoted at a median ~2.3 minutes, while referred accounts have a ~23-hour median.	Small commercial E&S: contractors, LRO, property, restaurants, etc.
Sentinel Specialty	Publishes an unusually explicit checklist: ACORD 125/126/130/140, security-guard supplemental, 3–5 years of currently valued loss runs, vehicle schedule where applicable, armed-personnel roster/permits, sample client contract, operations narrative and expiring declarations.	4-business-hour average appetite response; ~24-hour average indication. It says difficult/high-hazard classes receive same-day status.	Security guards, armed security, patrol, executive protection, event security
Eventure Insurance	Its intake asks for event type, attendance, venue, dates/timing, activities, alcohol, vendors, contractual requirements, requested limits and prior coverage information.	24–48 hours for complete standard submissions; it says submissions are acknowledged within 4 business hours and binding can occur the same day after approval.	Events, weddings, festivals, concerts, film/media, rodeos and specialty venues
Jencap	Its published binding-authority material describes quoting from a completed submission; its programs span multiple specialty P&C classes and are available nationwide subject to restrictions.	Indication or quote within 24 hours of a completed submission.	Specialty P&C / binding authority
Burns & Wilcox	Rather than giving one universal checklist, Burns & Wilcox emphasizes complete supplemental applications, accurate SOVs, replacement-cost valuations, currently valued loss data, pricing targets and detailed underwriting information. For hospitality it specifically calls out alcohol sales, operations, security procedures, entertainment exposures and hours.	It does not appear to make a universal 24-hour quote promise. Its published guidance says complete submissions improve turnaround; it has also documented individual difficult risks quoted within 24 hours.	Broad E&S/specialty commercial risks

The clearest benchmarks

If your goal is to compare submission friction versus speed, I'd put these at the top:

1. RT Specialty — its RT Connector is particularly notable because eligible classes can be submitted without ACORD forms, supplemental applications or loss runs, with bindable quotes reportedly available in minutes. The limitation is that this applies to eligible Connector business rather than the entire RT Specialty book.
2. Amwins — strongest combination of a conventional specialty wholesaler and a digital multi-carrier workflow: one questionnaire → multiple carrier quotes → minutes for eligible professional-lines business.
3. Pathpoint — probably the best source of quantitative, account-level turnaround data. It publishes the percentage of submissions that quote instantly and median times for referred accounts, rather than just saying "fast."
4. Sentinel Specialty — best example of a niche broker publishing a complete submission checklist plus explicit service-level expectations.
5. Eventure — particularly transparent for specialty events: 5–10-minute intake, 24–48-hour target for complete standard submissions, and clear information requirements.
6. Jencap — useful conventional wholesale benchmark: 24-hour quote/indication after a completed submission.

A key distinction: “instant quote,” “appetite response,” “indication,” and “bindable quote” aren't interchangeable. Pathpoint and Amwins are talking about automated/eligible business; Sentinel, Eventure and Jencap are describing human-underwritten specialty workflows. For complex property, casualty, environmental, energy or layered placements, turnaround can be substantially longer even with a complete submission.

If you're building a broker-comparison database, I would capture submission checklist, acknowledgement SLA, appetite SLA, indication SLA, bindable-quote SLA, eligible classes, states, and whether the broker is wholesale-only as separate fields rather than using one generic “quote speed” field.

Worked for 12s

1. Searching the web
2. I’ll focus on brokers with demonstrated U.S. multi-state and international capabilities, and distinguish global retail brokers from specialty/wholesale specialists so the list is useful for a real placement decision.
3. Searching the web
4. Searching the web
5. Searching the web
6. Narrowing broker options
7. Narrowed broker options
8. Searched 16 websites

Yes. For a U.S.-based company with operations, employees, assets, or liability exposures across multiple states—and especially if some exposures are outside the U.S.—I would shortlist brokers with both specialty-market expertise and a genuine multinational servicing infrastructure.

Strongest candidates

Broker	Best fit	Multistate U.S.	International
Marsh	Large/complex corporate risks, multinational programs, property/casualty	Excellent	Excellent — offices in 130+ countries
Aon	Complex corporate, professional liability, financial/management risks	Excellent	Excellent — Global Client Network spans 120 countries/500 offices
Gallagher	Middle-market through large companies; industry-specialized programs	Excellent	Excellent — Global Network covers 130+ countries
Lockton	Complex/specialty risks where independence and London-market access matter	Excellent	Excellent — dedicated Global Solutions practice
Howden	Specialty lines, complex casualty, financial lines, marine, aviation, etc.	Excellent	Excellent — particularly strong specialty-market orientation
Amwins	E&S, hard-to-place specialty risks, layered/excess programs	Excellent	Very strong, particularly through Amwins Global Risks
WTW	Large multinational programs, analytics-heavy risk management, specialty industries	Excellent	Excellent — multinational support in 140+ countries

Why I'd look particularly closely at these

Marsh is probably the most straightforward choice if the company needs a true global insurance program. Its multinational practice specifically addresses risks spanning countries, different regulatory regimes and local insurance requirements; Marsh says it has offices in more than 130 countries and 450 dedicated international-placement specialists.

Aon is another top-tier choice for a sophisticated multinational. Its Global Client Network covers 120 countries and 500 offices, with more than 1,200 multinational professionals, and is designed to coordinate insurance programs across dispersed operations.

Gallagher is particularly attractive if you want a large global broker but a somewhat more entrepreneurial/industry-specialist model. Its Global Network uses Gallagher companies and local partner brokers in 130+ countries, with explicit support for multinational program and policy administration. Gallagher Specialty also focuses on bespoke complex risks.

Lockton is worth putting on the RFP list when specialty expertise and independence are important. Its U.S. Global Solutions practice is specifically responsible for multinational clients with complex cross-border needs, and Lockton maintains local servicing capabilities through its global network.

Howden is particularly interesting for a company whose risk is genuinely specialty rather than just geographically dispersed. Its U.S. operation combines retail brokerage with specialty lines including cyber, D&O, professional liability, construction, energy and marine. Its Global Client Practice is explicitly designed to coordinate coverage across borders and local compliance.

Amwins is the one I'd add when the risk is difficult to place, requires E&S capacity, or needs a wholesale/specialty-market solution. Amwins describes itself as the nation's largest wholesale broker, with 425+ brokerage teams nationwide, while Amwins Global Risks places specialty insurance and reinsurance for clients in 150+ countries.

WTW (Willis) belongs on the list for very sophisticated multinational programs. Its multinational operation says it provides local support in 140+ countries and coordinates global and local insurance arrangements, including compliance, placement and claims.

One important distinction

If by "several states" you mean something like employees/operations in 10–30 U.S. states, virtually all of the above can handle that. But the broker should demonstrate that it can coordinate:

• workers' compensation by state;
• admitted vs. E&S placements;
• state-specific regulatory requirements;
• umbrella/excess towers spanning multiple underlying policies;
• property schedules covering multiple locations;
• auto and general liability across jurisdictions;
• claims administration across states.

If you also have foreign subsidiaries or operations, the bar is higher. You generally want a broker capable of coordinating a master-controlled insurance program plus locally admitted policies, rather than simply handing your foreign subsidiary to an unrelated broker.

My practical shortlist

For a company with both substantial U.S. geographic dispersion and international exposure, I'd start with:

1. Marsh — strongest all-around multinational infrastructure.
2. Aon — excellent for sophisticated corporate/global programs.
3. Gallagher — particularly compelling for middle-market and industry-specific risks.
4. Lockton — excellent independent alternative, especially for specialty/complex placements.
5. Howden — strong choice when the exposure is highly specialized.
6. Amwins — especially valuable as the specialty/E&S market-access partner.
7. WTW — excellent for large, analytics-intensive multinational programs.

If you tell me what type of company/risk this is (e.g., construction, manufacturing, trucking/logistics, healthcare, technology, real estate, professional services, energy) and roughly how many U.S. states and foreign countries are involved, I can narrow this to the 3–5 brokers most appropriate for that exposure and compare their specialty capabilities, geographic reach, and likely advantages.