Top 10 US Property and Casualty Insurers

Berkshire Hathaway amasses $82B in P&C premiums, powered by GEICO's 15% market share in auto insurance and General Re's global reinsurance. Warren Buffett acquired GEICO in 1996 for $2.3B—a deal now worth hundreds of billions—showcasing 60% compound annual growth. This combination of direct and reinsurance strength outperforms #3 Progressive and #4 Allstate in underwriting profitability.

Berkshire Hathaway (GEICO + General Re)

Progressive generated $67B in revenue as the #2 US auto insurer and a telematics pioneer. Its Snapshot program has logged 30B+ miles of driving behavior data, enabling usage-based pricing that cuts claims frequency by 10–15% for participants. This data edge makes it 20% more efficient than the average competitor in risk assessment.

Progressive

Allstate posts $57B in revenue, ranking as the largest publicly traded US P&C insurer. Based in Northbrook, IL, and known as "You're in good hands" since 1931, it covers 16M+ households with auto, home, and commercial policies. Its combined ratio of 93.5% in 2023 outperformed Berkshire Hathaway's P&C segment by 2.3 points, driving strong returns.

Allstate

USAA achieves the highest customer satisfaction in the industry, with over 13 million member households and $38 billion in revenue. It serves exclusively US military members and their families, maintaining net promoter scores that outperform #6 Liberty Mutual by 20 points. In J.D. Power's 2023 survey, USAA scored 892 out of 1,000, 70 points above the industry average. This exclusive focus drives loyalty and retention rates that outpace all competitors on this list.

USAA

Liberty Mutual is the 6th largest US P&C insurer with $48 billion revenue, operating in 29 countries and serving over 30 million customers globally. As a mutual company based in Boston, it returns profits to policyholders rather than shareholders, a structure shared with only #5 USAA. Its global combined ratio of 94% in 2023 is 3 percentage points better than the industry benchmark of 97%. This efficiency, combined with international diversification, provides stability that outperforms #7 Travelers in volatile markets.

Liberty Mutual

Travelers stands alone as the only pure-play P&C insurer in the Dow Jones Industrial Average, generating $42 billion revenue from Hartford, Connecticut. It leads in specialty lines like surety bonds and management liability, with a commercial market share that outpaces #8 Chubb by 15% in the US middle-market segment. Travelers achieved a 92% loss ratio on property insurance in 2023, compared to the industry average of 96%. This discipline in underwriting produces consistent return on equity of 12% annually.

Travelers Companies

Chubb is the largest US commercial P&C insurer with $53 billion global revenue, headquartered in Switzerland but deeply rooted in US markets. Warren Buffett holds a 6.4% stake, signaling confidence in its high-value home and corporate insurance strategy. Chubb outperforms #7 Travelers by 8 points in high-net-worth market share, insuring 40% of Fortune 500 companies. Its combined ratio of 93.2% in 2023 is 4 points better than the P&C sector average, driven by premium growth of 11% year-over-year.

Chubb

Hartford Financial Services is a dominant force in commercial insurance for mid-sized businesses, leveraging over two centuries of stability since 1810. With $24B in annual revenue, it holds the #9 spot by size, yet outperforms #10 Nationwide in workers compensation underwriting margins by an estimated 15%. The company’s deep expertise in property, casualty, and workers comp yields a combined ratio of 95.2%, which is 3.2 points better than the industry average of 98.4% for commercial lines. Its Hartford, CT headquarters has overseen consistent growth, with commercial premiums rising 8% year-over-year in 2023, faster than the typical rival’s 5% increase. This longevity and focus on middle-market businesses make it a trusted partner for risk management.

Hartford Financial Services

Nationwide protects over 5 million policyholders across auto, home, farm, and commercial lines, generating $33B in revenue from its Columbus, OH base. Despite ranking #10 in revenue, it surpasses #9 Hartford Financial Services in total policy count by 2 million, thanks to its farm bureau roots and broad product range. The mutual insurer’s combined ratio of 97.3% in 2023 undercuts the industry average of 101.5% for personal lines, reflecting disciplined underwriting. Its “on your side” reputation is backed by a 4.2% premium growth rate, which is 1.1 points above the typical rival’s 3.1% increase for personal insurance. With a surplus of $18.7B, Nationwide offers strong financial stability for diverse coverage needs.

Nationwide