Chubb Limited

Chubb Limited is a Swiss-incorporated global property and casualty insurer — the largest publicly traded P&C carrier by market capitalization — that also operates a growing life insurance franchise and a modest reinsurance book, generating $59.4 billion in total GAAP revenue and $10.3 billion in net income in fiscal 2025. The company writes commercial and personal lines across 54 countries through a network of owned local operations, placing it among a small handful of carriers with genuine global underwriting capability rather than a collection of outposts.

This is a compounding story in insurance form. Chubb has posted a P&C combined ratio below 87% in each of the last three years — an extraordinary run of underwriting consistency for a diversified carrier — while growing net premiums written at roughly 8% compounded over the same period. The file turns on a single question: whether the underwriting culture that Evan Greenberg has spent two decades building can keep the machine compounding through the softening part of the cycle now visibly underway in large-account property and certain specialty lines.

It is also a capital-return story. Chubb generates more operating cash flow than it can responsibly reinvest in organic premium growth, and management returns the surplus with industrial consistency: $5.2 billion in buybacks and dividends in FY2025, or roughly half of net income attributable to Chubb. The bull case needs underwriting excellence to persist; the bear case worries that the quality of the underwriting portfolio will only become visible when competitive pressure broadens beyond the property lines where it is already acute. Both sides can point to evidence from the same set of numbers. That tension is what makes the stock worth understanding.