Arch Capital is an all-weather specialty insurer that compounds book value by dynamically shifting capital across insurance, reinsurance, and mortgage cycles—while underwriting for profit, not market share.
Overview
Arch Capital Group (ACGL) is a Bermuda-headquartered, globally diversified specialty insurer spanning Insurance, Reinsurance, and Mortgage insurance/CRT. Since its 2001 reconstitution, it has built a platform defined by “active cycle management,” dynamically redeploying capital to the best risk-adjusted opportunities across underwriting cycles and geographies. The company competes by technical underwriting, data-driven risk selection, and a culture that prioritizes underwriting profit over market share. 2025 was a record year: net income to common shareholders of ~$4.4B, operating ROE of ~17.1%, a consolidated combined ratio of ~80.8%, and book value per share of $65.11 (+22.6% YoY). A conservative, high-quality $47.4B investment portfolio with short duration supports stability and reinvestment optionality. Entering 2026, Arch aims to leverage hard-market conditions, acquisition-driven scale in U.S. middle markets, and disciplined buybacks to continue compounding per-share value despite cyclical and macro risks.