Company lists · Data refreshed November 2026

Top 25 Underwriting managers worldwide

RevenueBase identified 1,960 company matches for underwriting managers worldwide as of November 2026 and tracks 75,170 professional contacts across them, including 37,908 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for underwriting managers worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for underwriting managers follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
1,960Companies
75,170Contacts tracked
37,908Verified emails
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The 25 largest underwriting managers worldwide

Ranked by team size
Top 25 of 1,960 company matches for underwriting managers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchCharlotte, NC, United StatesHQ recorded Nov 6, 20265,001-10,0005,154 contacts →

Exact match

“Amwins is the largest wholesale distributor of specialty insurance products and services in the U.S.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchCharlotte, FL, United StatesHQ recorded Nov 6, 20265,001-10,0003,343 contacts →

Exact match

“CRC Group is all about progress.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchChicago, IL, United StatesHQ recorded Nov 6, 20261,001-5,0003,066 contacts →

Exact match

“RT Specialty is a leading wholesale distributor of specialty insurance products and services and the wholesale broking specialty for Ryan Specialty.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchNanterre, FranceHQ recorded Nov 6, 20261,001-5,0001,545 contacts →

Exact match

“GGVie, filiale d’assurance de personnes du Groupe Groupama.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchSevenoaks, United KingdomHQ recorded Nov 6, 20261,001-5,0001,519 contacts →

Exact match

“Markerstudy Insurance Services Limited (MISL) is one of the largest Managing General Agents in the UK.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchWayne, CO, United StatesHQ recorded Nov 6, 20261,001-5,0001,352 contacts →

Exact match

“We aspire to be the very best insurance company at underwriting insurance products for our customers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchChicago, IL, United StatesHQ recorded Nov 6, 20265,001-10,0001,192 contacts →

Exact match

“Ryan Specialty (NYSE: RYAN) is an international specialty insurance firm that provides distribution, underwriting, product development, administration and risk management services…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchJersey City, NJ, United StatesHQ recorded Nov 6, 20265,001-10,0001,152 contacts →

Exact match

“Underwriting solutions at Verisk is a leading provider of advanced tools and analytics for the property/casualty and life insurance industries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchJersey City, NJ, United StatesHQ recorded Nov 6, 20261,001-5,000929 contacts →

Exact match

“SageSure is building the world’s leading catastrophe-risk franchise.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchCincinnati, OH, United StatesHQ recorded Nov 6, 20261,001-5,000690 contacts →

Exact match

“Core Specialty, through its subsidiary insurers, offers a diversified range of property, casualty, and marine insurance products for small to mid-sized businesses.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchMoorestown, GA, United StatesHQ recorded Nov 6, 2026201-500656 contacts →

Exact match

“Admiral Insurance Group, a Berkley company, provides excess and surplus (E&S) lines of commercial insurance exclusively through our nationwide network of wholesale brokers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchAtlanta, United StatesHQ recorded Nov 6, 2026501-1,000633 contacts →

Exact match

“Accelerant is a data-driven risk exchange built for specialty insurance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchHarrisburg, PA, United StatesHQ recorded Nov 6, 2026201-500630 contacts →

Exact match

“Aegis General Insurance Agency (AGIA) is a Managing General Agency and full-service Program Administrator.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchCorporate Headquarters: Bermuda, NY, SwedenHQ recorded Nov 6, 2026501-1,000625 contacts →

Exact match

“SiriusPoint is a global underwriter of insurance and reinsurance providing solutions to clients and brokers around the world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchJacksonville, LA, United StatesHQ recorded Nov 6, 2026501-1,000595 contacts →

Exact match

“For more than 45 years, Fortegra and its subsidiaries have delivered risk management solutions that help people and businesses succeed in the face of uncertainty.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchPembroke, BermudaHQ recorded Nov 6, 202651-200557 contacts →

Exact match

“The Fidelis Partnership is a leading privately-owned, Bermuda-based Managing General Underwriter, which, through its subsidiaries, is a global underwriter of property, bespoke and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchPlantation, TX, United StatesHQ recorded Nov 6, 2026501-1,000512 contacts →

Exact match

“As an MGA, we offer a great deal of specialty products with professional service.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchDallas, KS, United StatesHQ recorded Nov 6, 2026201-500491 contacts →

Exact match

“Brown & Riding was founded in 1980 and is one of the largest wholesale insurance brokerage firms in the United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchYork, PA, United StatesHQ recorded Nov 6, 2026501-1,000469 contacts →

Exact match

“To Glatfelter, insurance doesn't just mean providing policies and protections.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchNew York, NY, United StatesHQ recorded Nov 6, 2026501-1,000466 contacts →

Exact match

“Argo Group is a U.S-focused underwriter of specialty insurance products in the property and casualty market.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchAntwerp, BelgiumHQ recorded Nov 6, 202651-200459 contacts →

Exact match

“Bracht Deckers & Mackelbert NV (BDM), opgericht in 1934, is één van de meest gevestigde en gerespecteerde gevolmachtigde onderschrijvers in de Benelux-regio.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchAtlanta, GA, United StatesHQ recorded Nov 6, 2026201-500456 contacts →

Exact match

“RSUI is a leading underwriter of wholesale specialty insurance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchNew York, NY, United StatesHQ recorded Nov 6, 20261,001-5,000455 contacts →

Exact match

“Jencap is a national wholesale insurance intermediary serving retail agents through wholesale brokerage, binding authority, and program management.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchStockton, CA, United StatesHQ recorded Nov 6, 2026201-500451 contacts →

Exact match

“Hull & Company is a wholesale insurance broker and managing general agency.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSan Diego, CA, United StatesHQ recorded Nov 6, 2026501-1,000442 contacts →

Exact match

“Arrowhead General Insurance Agency, Inc, part of Arrowhead Programs, is one of the largest program administrators and managing general agents in the U.S.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,960 underwriting managers worldwide

See the full list, filter by size, metro and specialty, and access 37,908 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Underwriting managers worldwide at a glance

As of Nov 6, 2026
50.4%Verified-email coverage
38.4Average contacts per company
11-50Median size (employees)
9.6%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
704
11-50
805
51-200
290
201-500
79
501-1,000
37
1,001-5,000
30
5,001-10,000
8
10001+
3

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for underwriting managers are linked below.
What qualifies
Company records worldwide whose business descriptions match “underwriting managers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 37,908 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Underwriting managers by location

14 lists · largest first

Every Underwriting managers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “underwriting managers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many underwriting managers are there worldwide?

RevenueBase identified 1,960 company matches for underwriting managers worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Amwins tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most underwriting managers?

The United States leads with 821 companies, followed by the United Kingdom (307) and Canada (79). Every underwriting managers list by country and city is linked on this page.

Which city has the most underwriting managers?

London leads with 189 company records, followed by New York (46) and Dallas (31).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 37,908 professional contacts with verified work emails tracked across these 1,960 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.