Guy Carpenter & Company

What Guy Carpenter & Company does

Guy Carpenter & Company, LLC is a global reinsurance intermediary and wholly-owned subsidiary of Marsh & McLennan Companies (NYSE: MMC), operating as one of four business lines within the Marsh McLennan enterprise alongside Marsh, Mercer, and Oliver Wyman. Founded in 1917 by Guy Carpenter — who pioneered data-driven insurance pricing through the "Carpenter Plan" for cotton insurance — the firm joined Marsh McLennan in 1923 and today employs approximately 3,600 colleagues across 70+ offices worldwide, serving insurers, reinsurers, MGAs, governments, and multinational corporations across the Americas, EMEA, and Asia Pacific.

The firm's core offerings center on three capabilities: Reinsurance Broking (treaty and facultative placement), Strategic Advisory (integrated analytics and consulting), and Global Capital Solutions (encompassing GC Securities, Structured Solutions, and Capital & M&A). Its technology stack includes proprietary platforms — MetaRisk Reserve (a patented predictive modeling tool, US Patent #8452621B1), GC Mosaic (customizable analytics dashboards), GC Quote Box (AI-enabled pricing), GC Edge and GC MarketPlace (digital client portals), and GC Hybrid Solutions (specialty risk products) — supplemented by satellite-data-driven parametric advisory capabilities and a recently launched Global Sidecar Center of Excellence supporting insurance-linked securities.

Guy Carpenter generates revenue primarily through commissions and fees on reinsurance placements, structured capital solutions, and advisory mandates, billed primarily on annual cycles tied to reinsurance renewal periods. Q1 2026 revenue of $1.2 billion (up 3% year-on-year) implies an annual run rate in the $4.8–5.0 billion range. The firm is undergoing a corporate rebranding under which all Marsh McLennan businesses will unify under the Marsh brand by 2027, with Guy Carpenter becoming "Marsh Re."

Name

Guy Carpenter & Company

Legal name

Guy Carpenter & Company, LLC

Website

https://guycarp.com

Company type

Private

Founded year

1917

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Guy Carpenter & Company is a global reinsurance intermediary and subsidiary of Marsh & McLennan Companies, providing treaty/facultative broking, strategic advisory, capital markets solutions, and analytics to insurers, reinsurers, MGAs, and governments across 70+ offices worldwide.

Ownership category

akta.pro rank

Product category

Reinsurance Broking

NAICS

Securities and Commodity Contracts Intermediation and Brokerage (5231)

akta.pro primary industry

Reinsurance Brokerage (FSAEADAE)

akta.pro secondary industries

Agriculture / Crop / Livestock Reinsurance (FSAOADAN), Facultative Reinsurance Brokerage (FSAOAHAB), Facultative Specialty Lines Reinsurance (Marine, Aviation, Energy, Cyber, Surety, Political Risk) (FSAOAFAD), Reinsurance Claims, Accounting & Contract Administration (Broker Services) (FSAOAHAI)

Keywords

• Reinsurance broking services
• Reinsurance intermediary
• Capital advisory solutions
• Structured risk transfer
• Insurance-linked securities

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Offices23 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Reinsurance Broking Commissions and Fees: Guy Carpenter generates revenue primarily through commissions earned on reinsurance placements negotiated on behalf of ceding insurers and reinsurance clients. As a global reinsurance broker and risk advisor, the firm earns fees and commissions for placing treaty and facultative reinsurance, structuring capital solutions, and providing analytics and advisory services. Revenue for Q1 2026 was $1.2 billion, up 3% year-on-year.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels7 records

Core offering

Guy Carpenter operates as a global reinsurance intermediary placing treaty and facultative reinsurance on behalf of insurers, reinsurers, and corporations, while delivering strategic advisory, analytics, and capital markets solutions. Its capabilities include reinsurance broking, structured solutions, ILS and catastrophe bond origination, parametric risk transfer, rating agency advisory, and M&A support, supported by proprietary platforms such as MetaRisk Reserve, GC Quote Box, GC Mosaic, GC Edge, and GC MarketPlace.

Product overview

Guy Carpenter operates as a global reinsurance broking firm and business of Marsh (NYSE: MRSH), offering a platform of integrated risk management and reinsurance solutions. The core portfolio centers on Reinsurance Broking, Strategic Advisory, and Global Capital Solutions (encompassing GC Securities, Structured Solutions, and Capital & M&A). Client-facing digital platforms include GC MarketPlace (marketplace portal), GC Edge (analytical platform), and GC Hybrid Solutions (specialty risk products). Supporting tools include MetaRisk Reserve (patented predictive modeling tool for reserve analysis), GC Mosaic (customizable analytics dashboards), GC Quote Box (AI-enabled quoting platform), the Renewal Resource Center, and CAT Resource Center. The firm also provides specialized expertise through its Sidecar Center of Excellence and Parametric Advisory team. Solutions span risk categories including Property, Casualty, Financial Lines, Cyber, Climate Change, Marine & Energy, and Life reinsurance, serving diverse client segments from regional/mutual companies to global clients, MGAs, and public sector entities.

Differentiator

Problem solved

Functional benefit

Brands

• GC Hybrid Solutions: A hybrid reinsurance solutions platform
• GC MarketPlace
• GC Edge

Products and services

• Reinsurance Broking Core reinsurance intermediation service delivering market insight to help insurance and reinsurance clients achieve capital, growth, and volatility objectives. Matches the right capital with each client's risk profile through treaty and facultative placements.
• Strategic Advisory Integrated advisory and analytics solutions combining data insights, expertise, and cutting-edge tools to deliver strategic client solutions across capital, growth, and risk management.
• Global Capital Solutions
• GC MarketPlace
• GC Edge
• GC Hybrid Solutions
• MetaRisk Reserve U.S. patented predictive modeling tool (Patent #8452621B1) providing advanced reserve and risk analysis for the largest risks on client balance sheets.
• Global Sidecar Center of Excellence Global expertise center launched in January 2026 to support growing investor appetite for sidecar transactions and alternative capital solutions in reinsurance.
• Parametric Advisory
• Ecuador Parametric Agricultural Insurance Parametric agricultural insurance policies for smallholder rice and yellow maize producers in Ecuador, with payouts triggered by predefined rainfall and drought thresholds using satellite-captured data.
• Mexico Parametric Farmer Insurance Program Parametric risk transfer program for smallholder farmers in Mexico covering drought conditions and excess rain events, using satellite-captured rainfall data as the trigger mechanism.
• Halo AI Equine Insurance Platform AI-powered equine performance predictor and insurance platform offering micro-duration insurance products including Race-Day Cover and Fall of Hammer Cover, with Guy Carpenter as reinsurance broker, Markel as underwriter, and Halo AI providing risk scoring.
• GC Access for MGAs

Quantifiable outcome

• Q1 2026 revenue of $1.2 billion, up 3% year-on-year, with record new business growth across all regions and business lines
• +4 more outcomes

Named customers5 records

Segments7 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability8 records

Feature5 records

Partnerships

Six partnerships are on record, tiered core and minor.

• The Fidelis PartnershipcoreStrategic or Co-development Partner · 1 June 2026Guy Carpenter acted as the placing broker for The Fidelis Partnership's (TFP) PVT (war, terror, political violence) Consortium, bringing together leading Lloyd's syndicates including Argenta alongside TFP's own syndicates 3123 and 2126. The Consortium, which went live on June 1, 2026, can deploy up to $47.5 million per risk in the Middle East and $345 million per risk globally, addressing heightened demand and market dislocation from the Middle East conflict.
• AXA ClimatecoreStrategic or Co-development PartnerGuy Carpenter co-designed Ecuador's first parametric agricultural insurance policies with AXA Climate and Blue Marble, covering smallholder farmers against extreme rainfall and drought risks. AXA Climate designed the parametric trigger products, with Guy Carpenter providing reinsurance structuring and market access expertise.
• Blue MarblecoreStrategic or Co-development PartnerBlue Marble partnered with Guy Carpenter and AXA Climate to design Ecuador's parametric agricultural insurance policies for up to 10,000 smallholder rice and maize farmers, with Blue Marble contributing to the product design and local implementation support alongside Guy Carpenter's reinsurance structuring role.
• MarkelcoreStrategic or Co-development PartnerGuy Carpenter partnered with Markel and Halo AI to launch an AI-powered equine performance predictor and insurance platform. Guy Carpenter served as the reinsurance broker structuring the micro-duration insurance products (Race-Day Cover and Fall of Hammer Cover), while Markel underwrote the policies and Halo AI provided the AI-driven risk scoring platform.
• Insurance Development Forum (IDF)minorStrategic or Co-development PartnerThe Insurance Development Forum, a public-private partnership between the IDF, United Nations Development Programme (UNDP), and Germany's Federal Ministry for Economic Cooperation and Development (BMZ), partnered with Guy Carpenter on Ecuador's parametric insurance initiative for climate-vulnerable smallholder farmers.
• World BankminorStrategic or Co-development PartnerGuy Carpenter engaged in cross-industry collaboration with the World Bank to reduce disaster vulnerability in developing regions, contributing analytics and reinsurance structuring expertise to global development initiatives.

Scale indicators12 records

Recent moves10 records

Expansion highlights6 records

Direct peers

• Howden Re: Howden Re is a fast-growing independent reinsurance broker offering treaty, facultative, and capital solutions with a similar specialty-lines focus, and has been actively recruiting senior talent from Guy Carpenter, Hannover Re, and Swiss Re — making it an aggressive direct competitor particularly in specialty and regional markets.
• Lockton Re: Lockton Re is the reinsurance broking arm of Lockton, the world's largest independent insurance broker, providing treaty and facultative reinsurance placement and analytics services competing with Guy Carpenter for similar insurer and corporate clients globally.
• Aon Reinsurance: Aon plc's reinsurance solutions division is the largest direct competitor to Guy Carpenter, offering global treaty and facultative reinsurance broking, capital advisory, and analytics to insurers and reinsurers worldwide with overlapping service lines and target clients.
• Willis Re (WTW): Willis Towers Watson's reinsurance segment provides global treaty, facultative, and capital markets advisory services directly competing with Guy Carpenter's reinsurance broking, analytics, and ILS placement capabilities for the same insurance and reinsurance client base.

Broad incumbents

• Swiss Re: Swiss Re is a top-three global reinsurer that both provides capacity to reinsurance brokers like Guy Carpenter and operates its own corporate solutions and direct-to-insurer capabilities, making it both a key counterparty and a broader incumbent that competes for placement and advisory mandates.
• Munich Re: Munich Re is one of the world's largest reinsurers and also operates reinsurance broking-adjacent and risk solutions businesses; while it is a Guy Carpenter client (a key capital provider), its scale and direct-to-insurer capabilities make it a broader incumbent competitor and capacity alternative to Guy Carpenter's intermediation.
• Hannover Re: Hannover Re is one of the largest global reinsurers and a frequent capacity partner for Guy Carpenter on treaty and facultative placements; its scale, specialty expertise, and direct relationships with cedents position it as a broad incumbent that can bypass brokers on large transactions.
• Aon (parent): Aon plc is the closest peer at the parent-company level to Marsh McLennan, operating competing risk, reinsurance, and human capital advisory businesses — Aon Reinsurance Solutions is Guy Carpenter's primary direct competitor while Aon's broader platform competes for the same enterprise clients.

Emerging players

• Descartes Underwriting: Descartes Underwriting is a Paris-based parametric insurance specialist active in natural catastrophe and specialty lines, including as a panel participant at Guy Carpenter's industry events — it represents an emerging, technology-driven competitor in the parametric segment where GC is also building capability.
• Reinsurance Group of America (RGA): RGA is a leading global life reinsurer that both purchases and provides reinsurance intermediation-adjacent services; it overlaps with Guy Carpenter's Life Segment offering mortality, longevity, and health reinsurance solutions to similar insurer clients.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/guy-carpenter
• Xx.com/guycarpenter

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments1 record

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Guy Carpenter & Company