Who is the largest commercial auto insurance company | Market Share & Forecast 2025

Who is the largest commercial auto insurance company?

This growth is being underpinned by the growth of logistics, growing fleet-based services, and last-mile delivery services, all of which require inclusive coverage for risk mitigation.

Increasing accident claims, regulatory mandates for commercial fleet coverage, and the adoption of telematics for real-time vehicle tracking are shaping the market landscape. With the growth of climate events and urban logistics, insurers are increasingly prioritizing dynamic risk assessment and personalized premium models to stay competitive.

List of commercial auto insurance companies

1. Travelers Companies, Inc.

Travelers ranks second in U.S. commercial auto market share, offering fleet, garage, and specialty auto insurance. It is also one of the top writers of commercial property and casualty insurance.

2. Liberty Mutual Insurance Group

Liberty Mutual holds roughly 4 % market share in commercial auto and provides a broad range of coverages, including fleet solutions, liability, and specialty policies. It has strong capabilities in risk engineering and claims support.

3. Zurich Insurance Group

Zurich holds around 3 % of the U.S. commercial auto market and offers global coverage for fleets, commercial vehicles, and specialty lines. It caters to multinational corporations with tailored risk solutions.

4. Berkshire Hathaway Group (including GEICO and Berkshire Hathaway Specialty Insurance)

Berkshire Hathaway’s insurance arm writes commercial auto and fleet policies through GEICO and specialty divisions. It ranks within the top six U.S. providers, leveraging strong underwriting and capital backing.

5. Nationwide Mutual Insurance Company

Nationwide ranks in the top ten for commercial auto and fleet insurance, offering customizable policies and telematics-enabled fleet management tools like Vantage 360 Fleet.

6. Auto Owners Insurance Group

Auto Owners is a mid-sized player in commercial auto, with offerings in fleet, business vehicle liability, and specialized vehicle coverages. It ranks eighth in U.S. market share.

7. Allstate Corporation

Allstate holds around 2 % market share in U.S. commercial auto insurance. It provides auto coverage for small and mid-sized business fleets, rental vehicles, and service vehicles.

8. Progressive Corporation

Progressive is the largest commercial auto insurer in the U.S., with around 15 % market share and nearly $10 billion in premiums written. Known for its fleet coverages, telematics tools, and tailored policies for small to mid-size businesses.

9. W.R. Berkley Corporation

W.R. Berkley serves niche commercial auto segments—such as trucking, garage liability, and motor truck cargo—and holds a high AM Best rating (A+). It is among the top ten providers in specialty auto coverages

10. Old Republic International Corporation

Old Republic is a top-five U.S. commercial auto insurer, known for trucking and transportation coverage. It specializes in niche segments like garage liability and heavy vehicle fleets.

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