Progressive Retains No. 1 Position in U.S. Commercial Auto Insurance Amid Slight Premiums Decline

Progressive Insurance Group (NYSE: PGR) has maintained its position as the largest commercial auto insurer in the United States for 2025, according to the latest rankings from A.M. Best’s News & Research Service. The firm reported that Progressive’s direct premiums written (DPW) for commercial auto fell by 5.7% to $10.18 billion, leading to a market share decline from 14.9% in 2024 to 13.1% last year.

This continued leadership comes even as competitors registered varying growth. Travelers held its No. 2 ranking with a 9.1% DPW increase to $4.21 billion, while Berkshire Hathaway moved into the No. 3 slot with a 47.5% surge in DPW to $3.89 billion. Old Republic and Liberty Mutual trailed in the No. 4 and No. 5 slots, respectively. Across the industry, total U.S. commercial auto DPW rose 7.8% year over year to reach $77.83 billion. Despite the volume uptick, the sector’s adjusted loss ratio stood at 66.8% .

A second A.M. Best ranking, released on August 14, confirms that Progressive remained the top writer of commercial auto no-fault coverage in the U.S. for 2025. In this niche segment, DPW saw a negligible decline of 0.1% to $203.6 million, while the company’s share dipped slightly from 16.6% to 16.3%. No-fault policies accounted for approximately 0.2% of the insurer’s total premiums .

These developments arrive amid broader performance clarity from Progressive. Its Q2 2026 results, filed in recent weeks, further underscore growth trends in both personal and commercial lines. Net premiums written increased by 5% to about $21.1 billion, and underwriting profit margins were strong at 12.7% companywide. Notably, Commercial Lines—covering core commercial auto among other products—posted a 14.7% underwriting profit margin alongside a 4% rise in premiums and 3% growth in policies in force year over year for Q2 2026 .

Why It Matters

The A.M. Best data spotlights a notable shift: while Progressive remains the dominant supplier in the commercial auto market, the decline in premium volume suggests a rising competitive intensity and possibly softer demand or pricing pressure in certain segments. Higher-tier competitors, such as Berkshire Hathaway, are expanding share considerably, despite Progressive’s scale advantage.

For investors tracking PGR, these findings reinforce the company’s leading market franchise in commercial auto—elevating its competitive moat. At the same time, the DPW contraction serves as a reminder of the dynamic competitive landscape and margin risks. The Q2 2026 results offer mitigated reassurances through underwriting discipline and premium growth in Commercial Lines.

What to Watch Next

• Q3 results—progress on pricing, policy counts, and underwriting metrics.
• Trends in commercial auto DPW in future A.M. Best or industry data releases.
• Broader market shifts—competitor growth trajectories, rate changes, and macroeconomic drivers like inflation or vehicle utilization patterns.

Progressive’s leadership in both overall commercial auto and no-fault categories underscores its scale and operational presence. But the recent DPW softness and evolving competitive dynamics bear close observation for their implications on future market share and pricing power.

Note to readers: This report focuses exclusively on verified developments from trusted sources and covers data publicly released this week. No speculative projections or unverified rumors are included.