Financial Data and Key Metrics Changes - The company generated $1.1 billion of after-tax operating income in Q4 2025, a 26% increase from Q4 2024 [5] - The full year 2025 produced $3.7 billion of after-tax operating income, resulting in after-tax operating earnings per share of $9.84 and a 17.1% annualized operating return on average common equity [5] - Book value per share increased by 22.6% in 2025, with a compound annual growth rate exceeding 15% since inception [6] Business Line Data and Key Metrics Changes - The insurance group delivered $119 million of underwriting income in Q4 2025, with a combined ratio of 90.8% [8] - Gross premiums written in the insurance segment increased by 2% year-over-year, while net premiums written declined by 4% [15] - The reinsurance segment achieved a record $1.6 billion of underwriting income for the year, with a combined ratio of 74.9% in Q4 [10] - The mortgage segment produced $1 billion of underwriting income for the year, maintaining strong performance [11] Market Data and Key Metrics Changes - In North America, the company continued to grow in specialty casualty lines, while international units increased writings through the Bermuda platform and in continental Europe [8] - The rate environment in North America is keeping pace with loss-cost trends, while pricing in international business units is slightly below loss trends [9] Company Strategy and Development Direction - The company is starting 2026 with optimism, recognizing increased competition in several lines of business [7] - The Arch Playbook, which emphasizes disciplined risk selection and a diversified business model, remains a key differentiator [7] - The company aims to maximize long-term shareholder value through share buybacks and disciplined capital management [5][22] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in delivering strong returns throughout the underwriting cycle, despite recognizing competitive pressures [7] - The company anticipates that the impact of the Bermuda Tax Credits Act 2025 will benefit its financial results, particularly in the reinsurance segment [18][19] - The effective tax rate for 2025 was 14.9%, with expectations to return to the 16%-18% range in 2026 [21] Other Important Information - The company repurchased $1.9 billion of shares in 2025, representing 5.6% of outstanding common shares at the start of the year [22] - The investment portfolio surpassed $47 billion at year-end, providing a stable earnings stream [11] Q&A Session Summary Question: Opportunities in property cat reinsurance - Management clarified that opportunities mentioned were not in property cat but in other geographies and specialty lines [24] Question: Capital return and buyback pace - Management indicated that share buybacks will depend on market conditions and stock price, with expectations to remain active throughout the year [25] Question: MCE re-underwriting premium impact - Management noted that the re-underwriting will impact top line in 2026, with no significant seasonality expected [27] Question: Casualty reinsurance market conditions - Management acknowledged that margins are under pressure but expressed optimism about the business due to a diversified platform [46] Question: Demand for casualty reinsurance - Management indicated that demand is stable to down, with cedents retaining more business, impacting supply dynamics [56] Question: Excess capital position - Management stated that excess capital is not static and will be evaluated based on market conditions, with a commitment to return capital to shareholders [61]

Financial Data and Key Metrics Changes - The company generated $1.1 billion of after-tax operating income in Q4 2025, a 26% increase from Q4 2024 [4] - The full year 2025 produced $3.7 billion of after-tax operating income, resulting in after-tax operating earnings per share of $9.84 and a 17.1% annualized operating return on average common equity [4] - Book value per share increased by 22.6% in 2025, with a compound annual growth rate exceeding 15% since inception [5] Business Line Data and Key Metrics Changes - The insurance group delivered $119 million of underwriting income in Q4 2025, with a combined ratio of 90.8% [6] - Gross premiums written in the insurance segment increased by 2% from Q4 2024, while net premiums written declined year-over-year [6][14] - The reinsurance segment achieved a record $1.6 billion of underwriting income for the year, with a combined ratio of 74.9% in Q4 2025 [9] - The mortgage segment produced $1 billion of underwriting income for the year, maintaining strong performance [10][16] Market Data and Key Metrics Changes - In North America, the company continues to grow in specialty casualty lines, while international pricing is tracking slightly below loss trends [8] - The rate environment in North America is largely keeping pace with loss-cost trends, while competition is increasing in several lines of business [5][8] Company Strategy and Development Direction - The company emphasizes a diversified business model and disciplined risk selection as key differentiators in a competitive market [5] - The Arch Playbook remains a valid strategy for navigating the evolving market conditions [5] - The company aims to maximize long-term shareholder value through share buybacks and disciplined capital management [4][20] Management's Comments on Operating Environment and Future Outlook - Management expressed measured optimism heading into 2026, acknowledging increased competition but confidence in the company's ability to deliver strong returns [5] - The company is focused on maintaining underwriting discipline and adapting to changing market conditions [11] - Management highlighted the importance of leveraging data and analytics for improved risk selection [11] Other Important Information - The company recognized a full-year effect of the Bermuda Tax Credits Act 2025, impacting financial results positively [17][18] - The effective tax rate for 2025 was 14.9%, with expectations to return to the 16%-18% range in 2026 [19] Q&A Session Summary Question: Opportunities in property cat reinsurance - Management clarified that opportunities mentioned were not in property cat but in other geographies and specialty lines [23] Question: Capital management and buyback pace - Management indicated that share buybacks would depend on market conditions and stock price, with expectations to remain active throughout the year [24] Question: MCE re-underwriting impact - Management noted that the re-underwriting would impact top line in 2026, with no significant seasonality expected [25] Question: Casualty reinsurance market conditions - Management acknowledged that margins are under pressure but expressed optimism about the business due to a diversified platform [42][44] Question: Demand for casualty reinsurance - Management indicated that while there is stable demand, the willingness of cedents to retain more business has added to competition [52] Question: Impact of Bermuda tax credits on expenses - Management stated that the Bermuda tax credits would benefit the expense ratio but did not expect significant changes in other expense items [93]