10-K: Arch Capital Posts Strong 2025 Results Amidst Market Shifts

Arch Capital Group Ltd. reported robust financial performance for 2025, driven by strong underwriting and investment returns across its diversified insurance, reinsurance, and mortgage segments.

Summary

• Net income available to Arch common shareholders reached $4.359 billion in 2025, a slight increase from $4.272 billion in 2024.
• Annualized net income return on average common equity was 20.1% for 2025, compared to 22.8% for 2024.
• Annualized operating return on average common equity stood at 17.1% for 2025, down from 18.9% in 2024.
• Book value per share increased by 22.6% to $65.11 at December 31, 2025, from $53.11 at December 31, 2024.
• Net premiums written grew to $16.476 billion in 2025, up from $15.732 billion in 2024.
• The insurance segment's net premiums written increased by 13.4% to $7.798 billion, primarily due to the MCE Acquisition.
• The reinsurance segment's net premiums written decreased by 1.7% to $7.618 billion, reflecting non-renewals and share decreases in specialty lines, partially offset by casualty increases.
• The mortgage segment's net premiums written were 4.7% lower at $1.060 billion in 2025.
• Underwriting income for the insurance segment was $375 million, the reinsurance segment was $1.558 billion, and the mortgage segment was $1.000 billion.
• Total investable assets held by Arch were $47.4 billion at December 31, 2025.
• The company repurchased $1.9 billion worth of common shares in 2025, with $1.1 billion remaining under the share repurchase program at year-end.
• The PMIER sufficiency ratio for U.S. mortgage insurers was 179% at December 31, 2025, down from 186% in 2024, with a pro-forma ratio of 173% if new PMIERs deductions were fully implemented.

Sentiment

Score: 8

Explanation: StockSavvy.ai views this as a strong performance, with significant book value growth and robust underwriting results across segments, despite competitive pressures and minor underperformance in investments. The strategic acquisitions and capital management indicate a well-managed company.

Positives

• Net income available to common shareholders increased to $4.359 billion in 2025.
• Book value per share saw significant growth of 22.6% to $65.11.
• Strong underwriting and investment returns contributed to overall positive results.
• The insurance segment experienced a 13.4% increase in net premiums written, bolstered by the strategic MCE Acquisition.
• The mortgage segment consistently delivered strong underwriting income, exceeding $1 billion for the fourth consecutive year.
• The company actively returned capital to shareholders through $1.9 billion in share repurchases during 2025.
• The balance sheet is described as being in 'excellent health,' providing financial optionality.
• The company maintains a strong PMIER sufficiency ratio of 179% for its U.S. mortgage insurance business.

Negatives

• Annualized net income return on average common equity decreased to 20.1% in 2025 from 22.8% in 2024.
• Annualized operating return on average common equity decreased to 17.1% in 2025 from 18.9% in 2024.
• The reinsurance segment experienced a 1.7% decrease in net premiums written, primarily due to non-renewals and share decreases in specialty lines.
• The mortgage segment's net premiums written decreased by 4.7% in 2025.
• The investment portfolio slightly underperformed its benchmark returns in 2025, primarily due to impairment and sale of certain alternative investments.
• Increased competition is noted across property and casualty businesses, leading to rate pressure in short-tail excess of loss renewals (down 10% to 20%).
• The mortgage segment's current year loss ratio increased by 1.2 points in 2025, reflecting slightly higher new delinquencies and tender offers.

Risks

• Operating in a highly competitive environment may hinder successful competition.
• The cyclical nature of the insurance and reinsurance industry can lead to periods of excess underwriting capacity and unfavorable premium rates.
• Inflation, trade disputes, and other economic conditions can negatively impact business, financial condition, and results of operations.
• Natural catastrophic events could cause large losses and substantial volatility in results.
• Climate change impacts loss limitation methods, catastrophe risk modeling, and risk selection.
• Changes to existing regulation and supervisory standards, or failure to comply, could adversely affect business.
• Ongoing legal and policy actions around climate change may result in additional requirements and impact business strategy.
• Sanctions imposed on Russia and Russia-related businesses have impacted certain sectors.
• Geopolitical risks and uncertainty in global markets are difficult to manage or predict.
• Customers and policyholders may be impacted by climate change-related risks, affecting demand for products.
• Changes in governmental, investor, and societal responses to sustainability issues may lead to scrutiny or litigation.
• Unanticipated losses from geopolitical tensions, hostilities, war, terrorism, cyber attacks, and political instability.
• Underwriting risks and reserving for losses are based on probabilities and modeling, subject to inherent uncertainties.
• Failure of loss limitation methods could have a material adverse effect.
• Availability and cost of reinsurance/retrocessional coverage may be limited, and counterparty credit risks exist.
• Important third parties (e.g., managing general agents) may not adequately manage risks or breach obligations.
• Emerging claim and coverage issues may adversely affect business.
• Acquisitions, new business lines, and geographic expansion expose the company to integration and funding risks.
• Information technology systems and AI adoption pace may not meet customer demands or competitive needs, and AI use carries risks of non-performance or discrimination.
• Technology failures and cyber attacks could cause material disruption, data loss, and regulatory action.
• Changes in rating agency criteria could lead to downgrades, affecting client relationships and product sales.
• Inability to recruit, retain, and promote talented employees could hinder business strategy execution.
• Failure to maintain effective operating procedures, internal controls, and ERM program.
• Exposure to credit risk in certain business operations (e.g., surety, large deductibles).
• Violation of economic trade sanctions and foreign bribery laws could adversely affect operations.
• Adverse developments in financial markets could impact investments and access to capital.
• Disruption to financial markets and weak economic conditions may adversely impact investments.
• Foreign currency exchange rate fluctuations may adversely affect financial results.
• Determination of current expected credit losses (CECL) allowances is subjective and could impact results.
• Reinsurance subsidiaries may be required to provide collateral, affecting their ability to conduct business.
• Uncertain ultimate performance of mortgage insurance portfolios.
• Decline in low down payment mortgage originations or changes in government housing policies could reduce mortgage insurance revenues.
• Changes to the role of GSEs or eligibility requirements could negatively impact mortgage operations.
• Implementation of Basel III Capital Accord and FHFA's ERCF may adversely affect mortgage insurance and SRT/CRT opportunities.
• Provisions in bye-laws and shareholder agreements may hinder takeovers or management changes.
• Regulatory limitations on ownership and transfer of common shares.
• Arch Capital is a holding company dependent on dividends from subsidiaries.
• General market conditions and unpredictable factors could adversely affect preferred share prices.
• Dividends on preferred shares are non-cumulative.
• Preferred shares are equity and subordinate to indebtedness.
• Limited voting rights of preferred shareholders.
• Increased taxation in Bermuda due to the Bermuda CIT Act and potential increased taxation in other countries due to OECD's BEPS plan.

Future Outlook

Arch Capital approaches 2026 with measured optimism, acknowledging increased competition in property and casualty businesses. The company remains committed to delivering long-term shareholder value by emphasizing risk selection, leveraging its diversified specialty platform, and utilizing data and analytics to enhance insights and customer experience. Continued expansion in continental Europe and optimizing opportunities in the London market are key focuses for the insurance segment. The mortgage segment is expected to continue serving as a steady, diversifying contributor to overall earnings, driven by underwriting discipline, expense management, and enhanced data platforms, despite ongoing affordability challenges in the housing market.

Management Comments

• "We reported very good results for 2025, with an annualized net income return on average common equity and operating return on average common equity of 20.1% and 17.1%, respectively."
• "Meaningful contributions from all three segments along with solid investment returns resulted in book value growth for 2025 of 22.6%."
• "Our strong balance sheet and capital-generating capabilities permit us to both invest in our business and return capital to investors."
• "As we head into 2026 with measured optimism and increased competition across our property and casualty businesses, our commitment to deliver long-term value for our shareholders remains unchanged."
• "Critical to our cycle management is emphasizing risk selection, as we continue to leverage our diversified specialty platform and the expertise of our underwriting teams."
• "We invest and use data and analytics to sharpen insights, enhance risk selection and deliver a differentiated customer experience while fostering a culture that attracts the best-in-class talent."
• "We closed 2025 with a balance sheet in excellent health, giving us optionality as we remain prudent stewards of the capital entrusted to us by our shareholders."
• "Across the insurance platform, our underwriters continue to pursue growth in areas where risk-adjusted returns exceed or meet our long-term objectives."
• "Our diversified reinsurance platform, supported by strong partnerships with brokers and cedants across multiple lines and geographies, further enhance our ability to navigate a competitive environment."
• "Our mortgage segment continued to deliver a steady level of earnings, generating $1.0 billion of underwriting income in 2025, resulting in the fourth consecutive year exceeding the $1 billion threshold."
• "Our team remains focused on underwriting discipline, expense management and enhancing our data and analytical platforms to further optimize the business."
• "We continue to expect the mortgage segment to serve as a steady diversifying contributor to our overall earnings and generate attractive underwriting income given the high credit quality of our in-force portfolio."

Industry Context

StockSavvy.ai notes Arch Capital's strong 2025 performance, particularly its 22.6% book value per share growth, stands out in a competitive and cyclical insurance and reinsurance market. The strategic MCE Acquisition and continued focus on specialty lines and data analytics align with industry trends towards differentiation and technological integration. While the reinsurance segment faces rate pressure, Arch's diversified platform and cycle management expertise position it to navigate these headwinds. The consistent performance of the mortgage segment provides a valuable diversification, contrasting with the volatility often seen in property and casualty lines. The company's proactive approach to AI governance and climate change considerations also reflects broader industry efforts to address emerging risks and regulatory demands.

Comparison to Industry Standards

• Arch Capital's annualized net income return on average common equity of 20.1% and operating ROAE of 17.1% for 2025 demonstrate strong profitability, outperforming the S&P 500 Property & Casualty Insurance Index's cumulative total return of 234.32% over five years (ending Dec 31, 2025) compared to Arch's 279.66% over the same period.
• In the property casualty insurance and reinsurance businesses, Arch competes with major players like Allianz, American International Group, Chubb Limited, Munich Re Group, and Swiss Reinsurance Company Ltd., differentiating itself through specialty lines and cycle management skills.
• In the mortgage business, Arch MI U.S. competes with Essent Group Ltd., Enact Holdings Inc., MGIC Investment Corp., and Radian Group Inc., maintaining a stable market share amidst industry pricing discipline.
• Arch's PMIER sufficiency ratio of 179% indicates robust capital adequacy relative to GSE requirements, positioning it favorably against industry peers in the U.S. mortgage insurance market.
• The company's investment portfolio slightly underperformed its customized benchmark return of 8.78% with an actual return of 8.52% in 2025, primarily due to alternative investment impairments, suggesting a need for careful monitoring of non-traditional asset classes compared to broader market indices.

Corporate Governance

Legal Proceedings

• As of December 31, 2025, the company was not a party to any litigation or arbitration expected by management to have a material adverse effect on its results of operations, financial condition, and liquidity.

Related Party Transactions

• Arch Capital owns 30% of Greysbridge Holdings Ltd., which wholly owns Somers Holdings Ltd. (Somers).
• Arch Capital entered into certain reinsurance transactions with Somers, resulting in a reduction of net premiums written by $705 million in 2025.
• Somers paid certain acquisition costs and administrative fees to Arch Capital.
• At December 31, 2025, Arch Capital recorded a reinsurance recoverable on unpaid and paid losses from Somers of $2.0 billion and a reinsurance balance payable to Somers of $550 million.
• Arch Capital has a call right and certain third-party investors have put rights to purchase or sell a specified amount of Greysbridge common shares annually at year-end book value per share.
• At December 31, 2025, Arch Capital's balance sheet included $162 million in both other assets and other liabilities for such put notices, with transactions expected to close in 2026.
• Arch Re Bermuda and certain Arch co-investors acquired approximately 25% of Premia Holdings Ltd. (Premia) in 2017, with Arch appointing two directors to Premia's board.
• Arch Re Bermuda provides a quota share reinsurance treaty on certain business written by Premia, and Arch Capital subsidiaries provide administrative and support services to Premia.
• Arch Capital completed a share purchase agreement with Natixis in 2021 to purchase 29.5% of the common equity of Coface SA, a long-term strategic investment, with Arch appointing four directors to Coface's board.

Stakeholder Impact

• **Shareholders:** Positive impact from strong book value growth (22.6%), significant share repurchases ($1.9 billion in 2025), and consistent net income, indicating effective capital management and value creation. However, a slight decrease in ROAE and investment underperformance relative to benchmarks could be a minor concern.
• **Employees:** The company's focus on talent acquisition, development, rewards, and retention, including competitive compensation, share purchase plans, and professional development programs, positively impacts employee engagement and career growth. The increase to approximately 8,000 employees globally suggests continued growth and opportunity.
• **Customers/Policyholders:** The MCE Acquisition expands product offerings and capabilities in the U.S. middle markets and entertainment insurance, potentially providing more tailored solutions. The emphasis on disciplined underwriting, superior claims management, and data analytics aims to deliver a differentiated customer experience and reliable service.
• **Regulators:** The company is subject to extensive and evolving regulations globally (Bermuda, U.S., U.K., EU, Australia, Canada, Gibraltar), including new rules on cybersecurity, AI, climate change, and corporate income tax. Compliance with these diverse requirements is a continuous effort, with potential for increased scrutiny and costs.
• **Creditors:** The company's strong balance sheet and capital-generating capabilities, along with compliance with debt covenants and maintaining financial strength ratings, provide comfort to creditors regarding its ability to meet debt service obligations.

Next Steps

• File definitive proxy statement for the 2026 annual meeting of shareholders within 120 days after December 31, 2025.
• BMA to consult and publish additional guidance in 2026 in relation to recovery planning for IAIGs.
• CISA is expected to publish final implementing regulations for the Cyber Incident Reporting for Critical Infrastructure Act of 2022 in May 2026.
• PRA can request submission of a U.K. insurers Solvent Exit Analysis (SEA) beginning June 30, 2026.
• PRA expects U.K. firms to complete an internal review of their position against updated climate-related risk expectations (SS5/25) and develop a plan to remedy gaps by June 3, 2026.
• FCA Handbook guidance on non-financial misconduct (NFM) will take effect on September 1, 2026.
• Compliance obligations applicable to general purpose AI models take effect in August 2025 under the EU AI Act, with the remainder of the EU AI Act taking effect in August 2026.
• The Australian Government's AI Safety Institute (AISI) operations will commence in early 2026.
• The GDPR Procedural Regulation (Regulation 2025/2518) will apply from April 2, 2027.
• The EU Data Act (EUDA) is coming into effect on a phased basis from September 12, 2025, through to September 12, 2027.
• The Basel III Endgame is expected to be fully implemented by January 2027.
• The U.K. and EU have announced that the start of implementation for the Basel III Endgame will be delayed until January 1, 2027.
• The U.S. bank regulators are working toward unveiling a revised Basel III Endgame by early 2026.
• The EU institutions are at an advanced stage of agreeing substantive amendments to CSRD and CSDDD, which are expected to be formalized in early 2026.
• The company plans to early adopt ASU 2025-06 (Internal-Use Software) on a prospective basis beginning January 1, 2026.
• The company will continue to monitor its share price and consider share repurchases on an opportunistic basis, with approximately $702 million remaining under the program as of February 24, 2026.

Key Dates

Recommendation

Arch Capital's 2025 results demonstrate exceptional financial health and strategic execution, making it a strong buy. The 22.6% growth in book value per share and robust net income, coupled with significant capital returns through share repurchases, highlight effective capital management and shareholder value creation. The strategic MCE Acquisition and consistent underwriting profitability across all segments, particularly the stable mortgage business, provide a diversified and resilient earnings base. While competition and regulatory changes present challenges, Arch's proactive approach to risk management, AI governance, and climate considerations, alongside its experienced management team, position it favorably for sustained long-term growth and outperformance in the evolving insurance landscape.

Keywords

Insurance, Reinsurance, Mortgage Insurance, Specialty Insurance, SEC Filing, 10-K, Financial Results, Underwriting Income, Book Value Per Share, Share Repurchase, Risk Management, Climate Change, Cybersecurity, AI Governance, Bermuda CIT Act, PMIERs, GSEs, Catastrophe Exposure, Financial Strength Ratings, Global Economy