# ARCH CAPITAL GROUP LTD.

Summary updated: 2026-10-04T09:29:59.525952Z
Canonical: https://finbar.com/research/companies/arch-capital-group

## Overview

Arch Capital Group Ltd. is a Bermuda-based global specialty insurance and reinsurance company operating through three segments: insurance, reinsurance and mortgage. Its business includes specialty property-and-casualty insurance, reinsurance and mortgage insurance. Insurance operations span Bermuda, the U.S., the U.K., Europe, Canada and Australia, while its reinsurance business operates worldwide. [1](https://app.finbar.com/go?id=P40311747)[2](https://app.finbar.com/go?id=P13667009)[3](https://app.finbar.com/go?id=P37838949)

Arch states its purpose as “We Enable Possibility℠.” At year-end 2025, the company reported approximately $22.9 billion in gross premiums written and approximately 8,000 employees globally; it also describes a presence of more than 60 offices. Arch was formed in 2000. [4](https://www.archgroup.com/about/our-purpose-and-values/)[5](https://insurance.archgroup.com/wp-content/uploads/sites/2/About-Arch_AUS_Interactive_May2026_web.pdf)[3](https://app.finbar.com/go?id=P37838949)[6](https://app.finbar.com/go?id=P116001912)
[1](https://app.finbar.com/go?id=P40311747)[2](https://app.finbar.com/go?id=P13667009)[3](https://app.finbar.com/go?id=P37838949)[6](https://app.finbar.com/go?id=P116001912)[4](https://www.archgroup.com/about/our-purpose-and-values/)[5](https://insurance.archgroup.com/wp-content/uploads/sites/2/About-Arch_AUS_Interactive_May2026_web.pdf)

## Products & services

Arch Capital Group’s specialty insurance products include casualty, cyber and technology risk, excess and surplus lines, management liability, marine, property, surety, travel and warranty. Specific capabilities include cyber and network-security liability; management liability cover for commercial and financial-services accounts; ocean and inland marine insurance supported by claims and risk-control services; and construction and commercial surety [7](https://insurance.archgroup.com/business/north-america/united-states/products-industries/)[8](https://insurance.archgroup.com/north-america/united-states/offering/cyber/)[9](https://insurance.archgroup.com/north-america/united-states/offering/management-liability/)[10](https://insurance.archgroup.com/north-america/united-states/offering/marine/)[11](https://insurance.archgroup.com/north-america/united-states/offering/surety/)[12](https://app.finbar.com/go?id=P63477233)

Its reinsurance offerings span accident and health, agriculture, aviation, casualty, credit and surety, life and health, marine, and property. Examples include treaty and facultative capacity for life, personal accident, travel, medical and workers’ compensation portfolios; coverage for crop, forestry, aquaculture and livestock risks; and aviation hull and liability, general aviation and aviation products liability on excess-of-loss and pro-rata bases [13](https://reinsurance.archgroup.com/products-services/)[14](https://reinsurance.archgroup.com/offering/accident-and-health/)[15](https://reinsurance.archgroup.com/offering/agriculture/)[16](https://reinsurance.archgroup.com/offering/aviation/)[17](https://app.finbar.com/go?id=P90102078).

Mortgage products include mortgage guaranty insurance that protects lenders, investors or government-sponsored enterprises against borrower default. U.S. primary policies generally insure individual loans from origination, while portfolio transactions are also available; premium plans may be monthly, annual or single-premium [18](https://mortgage.archgroup.com/us/lo/products-services/)[19](https://app.finbar.com/go?id=P96356290)[20](https://app.finbar.com/go?id=P14360265).
[12](https://app.finbar.com/go?id=P63477233)[17](https://app.finbar.com/go?id=P90102078)[19](https://app.finbar.com/go?id=P96356290)[20](https://app.finbar.com/go?id=P14360265)[7](https://insurance.archgroup.com/business/north-america/united-states/products-industries/)[8](https://insurance.archgroup.com/north-america/united-states/offering/cyber/)[9](https://insurance.archgroup.com/north-america/united-states/offering/management-liability/)[10](https://insurance.archgroup.com/north-america/united-states/offering/marine/)[11](https://insurance.archgroup.com/north-america/united-states/offering/surety/)[13](https://reinsurance.archgroup.com/products-services/)[14](https://reinsurance.archgroup.com/offering/accident-and-health/)[15](https://reinsurance.archgroup.com/offering/agriculture/)[16](https://reinsurance.archgroup.com/offering/aviation/)[18](https://mortgage.archgroup.com/us/lo/products-services/)

## Geographic presence

Arch Capital Group’s operations span North America, Europe, the U.K., Bermuda and Australia. Its reinsurance business is conducted worldwide through operations including Bermuda, the United States, Europe and Lloyd’s syndicates. In the U.S., its insurance operations are licensed across all 50 states, the District of Columbia, Puerto Rico, the U.S. Virgin Islands and Guam; its Canadian insurance subsidiary is authorized across all provinces and territories. [3](https://app.finbar.com/go?id=P37838949)[21](https://app.finbar.com/go?id=P113305266)[22](https://app.finbar.com/go?id=P64402587)
[3](https://app.finbar.com/go?id=P37838949)[21](https://app.finbar.com/go?id=P113305266)[22](https://app.finbar.com/go?id=P64402587)

## Business segments

Arch Capital Group reports three underwriting segments: Insurance, Reinsurance and Mortgage. Its latest full-year reporting is for 2025; the company’s Q2 2026 investor presentation also provides trailing-12-month premium figures through June 30, 2026. [23](https://app.finbar.com/go?id=P146039886)[24](https://app.finbar.com/go?id=T16469293)

**Insurance** focuses on commercial specialty insurance across North America and international markets. Reported lines include commercial auto and multiperil, liability, property and workers’ compensation. **Reinsurance** operates worldwide across casualty, marine and aviation, specialty, property catastrophe and other lines; specialty includes areas such as cyber, trade credit and surety, accident and health, agriculture and political risk. **Mortgage** focuses on U.S. primary mortgage insurance, mortgage credit-risk-transfer business and reinsurance, as well as international mortgage insurance and reinsurance, primarily in Australia and Europe. [25](https://app.finbar.com/go?id=P56021654)[26](https://app.finbar.com/go?id=P14023208)[27](https://app.finbar.com/go?id=P143931043)[28](https://app.finbar.com/go?id=P121488033)

By trailing-12-month gross premiums written through June 30, 2026, the approximate segment mix was **46% Insurance, 48% Reinsurance and 6% Mortgage**. On a different measure, 2025 underwriting income was approximately **13% Insurance, 53% Reinsurance and 34% Mortgage**. These percentages use gross premiums written and underwriting income, respectively; segment shares therefore differ substantially depending on the measure. [29](https://app.finbar.com/go?id=T16469292)[24](https://app.finbar.com/go?id=T16469293)[30](https://app.finbar.com/go?id=T112825)
[23](https://app.finbar.com/go?id=P146039886)[24](https://app.finbar.com/go?id=T16469293)[25](https://app.finbar.com/go?id=P56021654)[26](https://app.finbar.com/go?id=P14023208)[27](https://app.finbar.com/go?id=P143931043)[28](https://app.finbar.com/go?id=P121488033)[29](https://app.finbar.com/go?id=T16469292)[30](https://app.finbar.com/go?id=T112825)

## Company history

Arch Capital Group was formed in September 2000 and completed an internal reorganization that November. In October 2001, it launched its insurance and reinsurance underwriting initiative, supported by $763.2 million in equity and a recruited management team that included founding-team members Dinos Iordanou and Marc Grandisson. Iordanou became president and CEO in 2003. [6](https://app.finbar.com/go?id=P116001912)[31](https://www.archgroup.com/about/our-history/)[32](https://www.archgroup.com/arch-capital-group-ltd-honors-the-life-and-legacy-of-former-ceo-dinos-iordanou/)[33](https://ir.archgroup.com/news/news-details/2024/Arch-Capital-Group-Ltd--Announces-Leadership-Transition/default.aspx)

The company expanded internationally by establishing a U.K. carrier in 2004, Canadian operations in 2005, and a Lloyd’s managing agency and syndicate in 2009. It entered U.S. mortgage insurance in 2014 and significantly expanded that business with its 2016 acquisition of United Guaranty. Grandisson became CEO in 2018; subsequent milestones included the 2019 acquisition of Barbican, the 2021 acquisition of Somerset Group and Westpac’s Australian lender-mortgage-insurance business, and the 2024 acquisition of Allianz’s U.S. middle-market property and casualty and entertainment businesses. Nicolas Papadopoulo succeeded Grandisson as CEO in October 2024. [34](https://app.finbar.com/go?id=P90942353)[35](https://app.finbar.com/go?id=P10237184)[36](https://app.finbar.com/go?id=P87777516)[37](https://app.finbar.com/go?id=P71484581)[31](https://www.archgroup.com/about/our-history/)[38](https://ir.archgroup.com/news/news-details/2017/Arch-Capital-Group-Ltd--Announces-Closing-of-Acquisition-of-United-Guaranty-Corporation/default.aspx)[33](https://ir.archgroup.com/news/news-details/2024/Arch-Capital-Group-Ltd--Announces-Leadership-Transition/default.aspx)
[6](https://app.finbar.com/go?id=P116001912)[34](https://app.finbar.com/go?id=P90942353)[35](https://app.finbar.com/go?id=P10237184)[36](https://app.finbar.com/go?id=P87777516)[37](https://app.finbar.com/go?id=P71484581)[31](https://www.archgroup.com/about/our-history/)[32](https://www.archgroup.com/arch-capital-group-ltd-honors-the-life-and-legacy-of-former-ceo-dinos-iordanou/)[33](https://ir.archgroup.com/news/news-details/2024/Arch-Capital-Group-Ltd--Announces-Leadership-Transition/default.aspx)[38](https://ir.archgroup.com/news/news-details/2017/Arch-Capital-Group-Ltd--Announces-Closing-of-Acquisition-of-United-Guaranty-Corporation/default.aspx)

## Sources

1. [ARCH CAPITAL GROUP LTD. — Full financial report (2025 Y)](https://app.finbar.com/go?id=P40311747)
2. [ARCH CAPITAL GROUP LTD. — Full financial report (2025 Y)](https://app.finbar.com/go?id=P13667009)
3. [ARCH CAPITAL GROUP LTD. — Full financial report (2025 Y)](https://app.finbar.com/go?id=P37838949)
4. [www.archgroup.com](https://www.archgroup.com/about/our-purpose-and-values/)
5. [insurance.archgroup.com](https://insurance.archgroup.com/wp-content/uploads/sites/2/About-Arch_AUS_Interactive_May2026_web.pdf)
6. [ARCH CAPITAL GROUP LTD. — Full financial report (2025 Y)](https://app.finbar.com/go?id=P116001912)
7. [insurance.archgroup.com](https://insurance.archgroup.com/business/north-america/united-states/products-industries/)
8. [insurance.archgroup.com](https://insurance.archgroup.com/north-america/united-states/offering/cyber/)
9. [insurance.archgroup.com](https://insurance.archgroup.com/north-america/united-states/offering/management-liability/)
10. [insurance.archgroup.com](https://insurance.archgroup.com/north-america/united-states/offering/marine/)
11. [insurance.archgroup.com](https://insurance.archgroup.com/north-america/united-states/offering/surety/)
12. [ARCH CAPITAL GROUP LTD. — Full financial report (2025 Y)](https://app.finbar.com/go?id=P63477233)
13. [reinsurance.archgroup.com](https://reinsurance.archgroup.com/products-services/)
14. [reinsurance.archgroup.com](https://reinsurance.archgroup.com/offering/accident-and-health/)
15. [reinsurance.archgroup.com](https://reinsurance.archgroup.com/offering/agriculture/)
16. [reinsurance.archgroup.com](https://reinsurance.archgroup.com/offering/aviation/)
17. [ARCH CAPITAL GROUP LTD. — Full financial report (2025 Y)](https://app.finbar.com/go?id=P90102078)
18. [mortgage.archgroup.com](https://mortgage.archgroup.com/us/lo/products-services/)
19. [ARCH CAPITAL GROUP LTD. — Full financial report (2025 Y)](https://app.finbar.com/go?id=P96356290)
20. [ARCH CAPITAL GROUP LTD. — Full financial report (2025 Y)](https://app.finbar.com/go?id=P14360265)
21. [ARCH CAPITAL GROUP LTD. — Full financial report (2025 Y)](https://app.finbar.com/go?id=P113305266)
22. [ARCH CAPITAL GROUP LTD. — Full financial report (2025 Y)](https://app.finbar.com/go?id=P64402587)
23. [ARCH CAPITAL GROUP LTD. — Full financial report (2026 Q 2)](https://app.finbar.com/go?id=P146039886)
24. [ARCH CAPITAL GROUP LTD. — Presentation (2026 Q 2), p4](https://app.finbar.com/go?id=T16469293)
25. [ARCH CAPITAL GROUP LTD. — Full financial report (2025 Y)](https://app.finbar.com/go?id=P56021654)
26. [ARCH CAPITAL GROUP LTD. — Full financial report (2025 Y)](https://app.finbar.com/go?id=P14023208)
27. [ARCH CAPITAL GROUP LTD. — Presentation (2026 Q 2), p7](https://app.finbar.com/go?id=P143931043)
28. [ARCH CAPITAL GROUP LTD. — Full financial report (2025 Y)](https://app.finbar.com/go?id=P121488033)
29. [ARCH CAPITAL GROUP LTD. — Presentation (2026 Q 2), p4](https://app.finbar.com/go?id=T16469292)
30. [ARCH CAPITAL GROUP LTD. — Full financial report (2025 Y)](https://app.finbar.com/go?id=T112825)
31. [www.archgroup.com](https://www.archgroup.com/about/our-history/)
32. [www.archgroup.com](https://www.archgroup.com/arch-capital-group-ltd-honors-the-life-and-legacy-of-former-ceo-dinos-iordanou/)
33. [ir.archgroup.com](https://ir.archgroup.com/news/news-details/2024/Arch-Capital-Group-Ltd--Announces-Leadership-Transition/default.aspx)
34. [ARCH CAPITAL GROUP LTD. — Full financial report (2025 Y)](https://app.finbar.com/go?id=P90942353)
35. [ARCH CAPITAL GROUP LTD. — Full financial report (2025 Y)](https://app.finbar.com/go?id=P10237184)
36. [ARCH CAPITAL GROUP LTD. — Full financial report (2025 Y)](https://app.finbar.com/go?id=P87777516)
37. [ARCH CAPITAL GROUP LTD. — Full financial report (2025 Y)](https://app.finbar.com/go?id=P71484581)
38. [ir.archgroup.com](https://ir.archgroup.com/news/news-details/2017/Arch-Capital-Group-Ltd--Announces-Closing-of-Acquisition-of-United-Guaranty-Corporation/default.aspx)

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