ARCH CAPITAL GROUP LTD. — Form 8-K

Arch Capital reported Q3 2026 net income of $1.025 billion ($3.00 diluted EPS), down 23.5% from Q3 2025's $1.340 billion ($3.56 EPS). After-tax operating income was $910 million ($2.67 EPS), down 12.7% YoY. Pre-tax catastrophic losses reached $234 million (5.8 pts of combined ratio); prior year reserves developed favorably by $179 million. Combined ratio was 82.5% (81.2% ex-cat/prior development). The company repurchased $1.4 billion in shares (14.8M shares at $96.62 average). Book value decreased 0.2% to $67.90/share. Insurance segment saw higher loss ratios (60.8% vs 59.0%); reinsurance segment declined with 9.3% lower net premiums written; mortgage segment premiums down 4.0%. Investment portfolio declined slightly; net realized losses $99M vs gains of $210M prior year.