Chubb Limited

Commercial insurance premiums renew annually on contractual terms, with specialty and high-net-worth lines exhibiting structurally higher retention than commodity personal auto. Net premiums written grew in each fiscal year from FY2021 through FY2025, including through the FY2022 inflation environment and the FY2025 California wildfire impact.

Six reporting segments span NA Commercial P&C (38% of FY2025 net premiums earned), Overseas General (27%), Life in Asia (14%), NA Personal P&C (13%), Agricultural (5%), and Global Reinsurance (3%), providing genuine spread across lines. The largest segment at 38% represents moderate concentration, though within-segment breadth across property, casualty, specialty, financial lines, and accident and health adds further granularity.

Chubb operates in 54 countries, with North American segments generating roughly 56-59% of net premiums and Overseas General (27%) and Life in Asia (14%) providing meaningful international balance. No single non-U.S. country dominates the book, but North America's majority share places geographic diversification above average rather than broadly balanced.

The $166B invested asset base (December 2025 investor presentation) compounds investment income against relatively fixed overhead, providing meaningful operating leverage on the investment side. Claims costs remain structurally linear with premium volume, limiting the business to moderate rather than software-like operating leverage.

Commercial insurance and life premiums are mission-critical and contractually structured, serving corporations and high-net-worth individuals who rarely cancel mid-term. The $166B float generated $1.8B per quarter in adjusted net investment income as of Q4 2025, a durable second revenue stream that compounds independently of underwriting cycles.