Arch Capital Group Ltd.

Overview

Arch Capital Group Ltd. is a publicly listed Bermuda exempted company and an S&P 500 member. As of December 31, 2025, the company had approximately $26.9 billion in capital. Through its subsidiaries, Arch provides insurance, reinsurance, and mortgage insurance worldwide with a focus on specialty lines. In 2025, Arch wrote about $16.5 billion of net premiums and reported net income available to Arch common shareholders of $4.4 billion. Book value per share was $65.11 at year-end 2025.

Core businesses

Arch operates three underwriting segments: Insurance, Reinsurance, and Mortgage.

Insurance Operations

• Global insurance operations across Bermuda, the U.S., the U.K., Europe, Canada, and Australia.
• Multiple U.S. carriers, including Arch Insurance Company, Arch Specialty, Arch Indemnity Insurance, Arch PC, and Arch Wilsure.
• Lloyd’s market presence through AMAL and Arch Syndicates.
• Operates McNeil & Company for risk management and program administration.
• Completed the Allianz U.S. Middle Market Property & Casualty and Entertainment P&C acquisition (MCE Acquisition) on August 1, 2024, expanding U.S. middle-market capabilities and entry into the entertainment insurance market.

Reinsurance Operations

• Global reinsurance platform including Arch Re Bermuda, Arch Re U.S., Arch Re Europe, and Lloyd’s Syndicates with AMAL as managing agent.
• Offers proportional and non-proportional reinsurance, including treaty and facultative business.
• Provides internal reinsurance capacity through Arch Group Reinsurance Ltd. (AGRL) for U.S. lines.

Mortgage Operations

• Provides mortgage insurance and reinsurance in the U.S. and internationally, and participates in GSE credit risk-sharing programs.
• Key U.S. entities include Arch MI U.S. (AMIC, UGRIC) and AMG for non-GSE-eligible direct mortgage insurance.
• Supports mortgage-related offerings in Europe, the U.K., and Australia through Arch Insurance (EU) and Arch Indemnity.
• Arch CRS offers advisory services for GSE CRT programs.

Global footprint

• Operations and branches across Bermuda, the U.S., the U.K., Europe, Canada, and Australia.
• Lloyd’s market access via Arch Syndicates and AMAL.
• Ireland-based Arch Insurance (EU) and related designations address EU business following Brexit, with Irish regulatory alignment (CBI) for Solvency II.

Financial highlights (2025)

• Total capital: approximately $26.9 billion (December 31, 2025).
• Investable assets: about $47.4 billion.
• Book value per share: $65.11 (December 31, 2025).
• 2025 net premiums written: $16.5 billion.
• Net income available to Arch common shareholders (2025): $4.4 billion.

Balance sheet and scale indicators:

• Employees: approximately 8,000 globally
  • North America: about 4,300
  • Europe and the U.K.: about 1,700
  • Rest of world (Philippines, India, Australia, and other): about 2,000

Customer concentration (2025):

• Largest single mortgage insurer customer: 5.3% of gross premiums written.
• Top 10 customers: 25.8% of gross premiums written.

Growth and recent strategic actions:

• MCE Acquisition completed August 1, 2024, to expand U.S. middle-market and entertainment capabilities.
• Divestment of Castel Underwriting Agencies Limited in May 2024 as part of Barbican integration.
• Continued expansion of the Lloyd’s platform via AMAL and Arch Syndicates.
• Continued investment in AI and analytics to support underwriting, risk management, and operations.

Business model and positioning

• Three underwriting platforms (insurance, reinsurance, mortgage) focused on specialty lines where underwriting expertise adds value.
• Distribution through multiple channels: licensed brokers, with direct sales for mortgage insurance in the U.S., Europe, and Australia, and a mix of direct and broker channels elsewhere.
• Reinsurance approach emphasizes disciplined underwriting, centralized risk guidelines, and use of retrocessions and capital markets to manage exposure and capacity.
• Mortgage operations follow a disciplined credit risk philosophy, apply proprietary risk models (including scenarios for severe housing market events), and participate in GSE CRT programs where applicable.
• Uses AI and data analytics across segments under an AI governance framework.

Governance and regulatory context

• Operations span multiple regulatory regimes, including Bermuda, the U.S., the U.K., Ireland/EU, Canada, and Australia.
• Regulatory focus includes Solvency II alignment for EU/Ireland entities and Bermuda capital requirements, along with U.S. insurance holding company regulation and NAIC frameworks for reinsurance credit.

Summary

Arch Capital Group Ltd. provides specialty-focused insurance, reinsurance, and mortgage insurance globally. The company has a diversified capital base, about 8,000 employees, 2025 net premiums of $16.5 billion, and net income to common shareholders of $4.4 billion. Its three underwriting platforms, broad international footprint, and recent strategic transactions, including the 2024 MCE Acquisition, support continued growth and market presence.