Arch Capital Group

What Arch Capital Group does

Arch Capital Group Ltd. (NASDAQ: ACGL) is a Bermuda-domiciled specialty insurance, reinsurance, and mortgage insurance holding company founded in 2001 following the post-9/11 reinsurance capacity gap. The company operates through three reportable segments — Arch Insurance (specialty property, casualty, professional lines, surety, cyber, travel, and small commercial), Arch Reinsurance (global treaty and facultative property and casualty, including catastrophe retrocession), and Arch Mortgage Insurance (the world's largest mortgage insurer following the 2016 United Guaranty acquisition, operating across the U.S., Australia, Canada, and Europe). Distribution is primarily broker-led: insurance flows through wholesale and retail brokers including E&S partners, reinsurance through treaty and facultative intermediaries, and mortgage insurance through lender and servicer channels. Consumer and small business lines (RoamRight, Thimble) are offered via direct digital channels.

Revenue is generated predominantly through insurance and reinsurance premiums (subscription/recurring) with a meaningful contribution from investment income on the float portfolio managed by Arch Investment Management Ltd. (AIM). In Q1 2026, net premiums written were approximately $2.2B for Reinsurance, $1.9B for Insurance, and $284M for Mortgage, with pre-tax net investment income of $408M. Premiums are individually underwritten; no standardized rate cards exist. The company operates a platform-plus-subsidiary model with over a dozen operating subsidiaries (McNeil & Co., Somers Re, Ventus, SoundView, Somerset Bridge Group, Arch Wilsure, etc.) and holds a 29.5% strategic stake in French trade credit insurer Coface SA.

Capital strength is a defining feature: Arch holds approximately $26.9B in capital as of Q1 2026, an AA- financial strength rating from S&P (upgraded in 2025), an A+ (Superior) rating from AM Best for Arch Wilsure, and ~89% institutional ownership. Operational scale spans over 60 offices across North America, Europe, Australia, and Asia (including newly opened India operations in Hyderabad and Trivandrum) with approximately 7,400 employees. The company is an S&P 500 component, returned $3.7B in after-tax operating income for full-year 2025, and has executed an aggressive capital return program — $8.5B in share buybacks over 20 years at roughly 1.2x book value, $1.9B in 2025 repurchases, and a $3B share repurchase authorization as of April 2026.

Name

Arch Capital Group

Legal name

Arch Capital Group Ltd.

Website

https://archgroup.com

Company type

Public

Founded year

2001

Operating status

Operating

Headcount range

5,001–10,000 employees

Short description

Arch Capital Group (NASDAQ: ACGL) is a Bermuda-based specialty insurer, reinsurer, and mortgage insurer operating across insurance, reinsurance, and mortgage segments globally with three core units: Arch Insurance, Arch Reinsurance, and Arch Mortgage Insurance (the world's largest).

Ownership category

akta.pro rank

Product category

Specialty Insurance and Reinsurance

NAICS

Finance and Insurance (52)

SIC

Surety Insurance (6351)

akta.pro primary industry

Property Treaty Reinsurance (FSAOAEAC)

akta.pro secondary industry

Insurance General Accounts (Institutional Asset Owners) (FSAAAGAG)

Keywords

• Specialty insurance
• Treaty reinsurance
• Mortgage insurance
• Excess and surplus
• Cyber insurance

Headquarters

HQ city

Hamilton

HQ country

Bermuda

Offices17 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Insurance Premiums: Arch Insurance segment writes gross premiums across specialty lines including property, casualty, professional, Surety, workers' compensation, and specialty coverages for clients in North America, Europe, and Australia. Net premiums written in Q1 2026 were approximately $1.9 billion for the Insurance segment. Premiums are the primary revenue driver.
2. Reinsurance Premiums: Arch Re operates globally providing treaty and facultative property and casualty reinsurance. Net premiums written in Q1 2026 were approximately $2.2 billion for the Reinsurance segment, representing the largest segment by premium volume. Reinsurance premiums are written on both proportional and non-proportional bases.
3. Mortgage Insurance Premiums: Arch Mortgage segment provides mortgage insurance (primary and pool), credit risk transfer, and other mortgage-guaranty products globally (US, Australia, Canada, Europe). Net premiums earned in Q1 2026 were approximately $284 million. Revenue includes both monthly and annual premium products from flow and bulk channels.
4. Investment Income: Arch Capital Group generates investment income from its investment portfolio managed by Arch Investment Management Ltd. (AIM), including fixed maturity securities, equities, and alternative investments. Pre-tax net investment income was $408 million in Q1 2026.

Pricing tiers

Go-to-market motion2 records

Distribution channels7 records

Marketing channels6 records

Core offering

Arch Capital Group underwrites specialty property, casualty, and professional insurance; treaty and facultative reinsurance globally; and mortgage insurance including primary, pool, and credit risk transfer. It distributes through wholesale and retail brokers, treaty intermediaries, and lender partners, with direct digital channels for travel (RoamRight) and small business (Thimble) coverage.

Product overview

Arch Capital Group operates as a specialty insurance conglomerate offering three core business segments: Arch Insurance (property, casualty, and specialty risk solutions), Arch Reinsurance (treaty and facultative reinsurance globally), and Arch Mortgage Insurance (risk management for the housing sector). The portfolio includes multiple sub-brands such as Arch RoamRight (travel insurance), Thimble (small business insurtech), McNeil & Company (specialized insurance), Somers Re (global reinsurance), Ventus Risk Management (coastal commercial property MGU), and SoundView Claims Solutions (third-party claims administrator). Arch CyPro serves as the company's primary cyber insurance product. The architecture follows a platform-plus-subsidiary model where corporate oversight manages distinct operating companies, each with specialized product focuses across insurance, reinsurance, and mortgage lines.

Differentiator

Problem solved

Functional benefit

Brands

• RoamRight: Travel protection plans for leisure, business, student and group travelers
• Thimble
• McNeil & Co.
• SoundView
• Ventus
• Somers Re
• Somerset Bridge Group
• Arch Global Reinsurance Group
• Arch Global Mortgage Group
• Arch Global Services India
• Arch Global Services Philippines

Products and services

• Arch Insurance Provides specialty risk solutions to clients worldwide across property, casualty, professional liability, surety, workers' compensation, cyber, travel, and entertainment insurance lines, from operations in North America, Europe and Australia.
• Arch Reinsurance (Arch Re) Operates in most major global insurance centers offering treaty and facultative property and casualty reinsurance on a worldwide basis, including catastrophe retrocession through instruments such as cat bonds.
• Arch Mortgage Insurance (Arch MI)

Quantifiable outcome

• Q1 2026 underwriting income of $728 million (+74.6% YoY) with 81.7% combined ratio
• +3 more outcomes

Named customers5 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature3 records

Partnerships

One partnership is on record.

• TernminorGTM or Marketing Partner · 10 February 2026Arch RoamRight partnered with Tern to become the first travel insurance provider integrated with Tern's travel business platform, enabling travel advisors and their clients to purchase travel protection simultaneously with travel bookings through a single platform. The partnership is active and Arch RoamRight's insurance products are immediately available through the Tern platform.

Scale indicators19 records

Recent moves9 records

Expansion highlights7 records

Broad incumbents

• The Travelers Companies, Inc. Large US-domiciled P&C insurance carrier with broad commercial and personal lines. Overlaps with Arch Insurance in commercial property, casualty, and specialty lines, but with much larger market share in standard commercial P&C.
• Berkshire Hathaway Inc. Berkshire's insurance operations (GEICO, General Re, Berkshire Hathaway Reinsurance Group) are a direct competitor in reinsurance and a parallel capital allocator. Comparable to Arch Re in treaty reinsurance and in deploying float for investment returns.

Direct peers

• RenaissanceRe Holdings Ltd. Bermuda-domiciled specialty reinsurer focused on property catastrophe and specialty lines. Directly comparable to Arch Re in treaty and facultative property reinsurance, with similar Bermuda holding structure and ILS market participation.
• Essent Group Ltd. Pure-play US mortgage insurance and credit risk transfer provider. Comparable to Arch MI in primary mortgage insurance with similar customer base (US mortgage originators) and similar exposure to GSE and private mortgage insurance dynamics.
• Everest Group, Ltd. Specialty P&C insurance and reinsurance company with parallel mix of insurance and reinsurance segments. Closely comparable to Arch Re and Arch Insurance in treaty reinsurance, property cat, and specialty commercial underwriting.
• Radian Group Inc. US-focused residential mortgage insurance and mortgage credit risk transfer provider. Directly comparable to Arch MI in primary mortgage insurance, with similar exposure to US housing credit cycles and CRT market dynamics.
• Fairfax Financial Holdings Limited: Canada-based specialty insurance and reinsurance holding company with global operations. Comparable to Arch in disciplined underwriting, value-driven acquisitions, and mix of insurance and reinsurance across multiple geographies.
• Markel Group Inc. Specialty insurance conglomerate with insurance, reinsurance, and investment operations. Comparable to Arch in specialty P&C underwriting approach, long-cycle capital allocation philosophy, and diversified specialty platform.
• MGIC Investment Corporation: US private mortgage insurance provider with significant share of the US MI market. Closely comparable to Arch MI in primary mortgage insurance underwriting, claims management, and exposure to US housing credit conditions.
• Chubb Limited: Global specialty P&C insurance leader with broad product portfolio across commercial and consumer lines. Directly comparable to Arch in specialty commercial, excess casualty, and professional lines, with similar global distribution architecture.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/archcapgroup
• Facebookfacebook.com/218089425270586
• LinkedInlinkedin.com/company/acgl

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries20 records

Funding overview

Funding rounds3 records

Investors1 record

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

M&A6 records

Investments11 records

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

Frequently asked questions about Arch Capital Group