– Chubb Corporation
– Sector: Property & Casualty
– Year Founded: 1882
– Annual Revenue: $34.02 billion (2019)
– Description: Chubb is a global insurance leader with operations in 54 countries, offering commercial and personal property and casualty insurance, personal accident and supplemental health insurance, reinsurance, and life insurance.
– Link: [Chubb Corporation](https://www.chubb.com)
– AIG (American International Group, Inc.)
– Sector: Property & Casualty, Life & Retirement
– Year Founded: 1919
– Annual Revenue: $49.47 billion (2019)
– Description: AIG is a leading global insurance organization serving customers in more than 80 countries and jurisdictions. It provides a wide range of property casualty insurance, life insurance, retirement solutions, and other financial services to customers in more than 80 countries and jurisdictions.
– Link: [AIG](https://www.aig.com)
– Liberty Mutual
– Sector: Property & Casualty
– Year Founded: 1912
– Annual Revenue: $43.21 billion (2019)
– Description: Liberty Mutual is a diversified global insurer with operations in 29 countries and economies around the world. It offers a wide range of insurance products and services, including personal automobile, homeowners, commercial multi-peril, workers compensation, general liability, global specialty, group disability, reinsurance, and surety.
– Link: [Liberty Mutual](https://www.libertymutual.com)
– Zurich Insurance Group
– Sector: Property & Casualty, Life & Investments
– Year Founded: 1872
– Annual Revenue: $78.6 billion (2019)
– Description: Zurich is a leading multi-line insurer that serves its customers in global and local markets. It provides a wide range of property, casualty, and life insurance products and services in more than 210 countries and territories.
– Link: [Zurich Insurance Group](https://www.zurich.com)
– Allianz SE
– Sector: Property & Casualty, Life & Health
– Year Founded: 1890
– Annual Revenue: $140.5 billion (2019)
– Description: Allianz is a global financial services provider offering insurance, asset management, and banking products and services. It operates in more than 70 countries and serves over 100 million customers worldwide.
– Link: [Allianz SE](https://www.allianz.com)
– C Financial
– Sector: Property & Casualty
– Year Founded: 1897
– Annual Revenue: $9.26 billion (2019)
– Description: C is a leading commercial insurance company serving businesses and professionals for over a century. It offers a broad range of insurance products and services, including property & casualty, management & professional services, and surety.
– Link: [C Financial](https://www.cna.com)
– The Hartford
– Sector: Property & Casualty, Group Benefits
– Year Founded: 1810
– Annual Revenue: $20.44 billion (2019)
– Description: The Hartford is a leading provider of insurance and wealth management services. It offers a diverse line of property and casualty, group benefits, and mutual funds to individuals, groups, and businesses.
– Link: [The Hartford](https://www.thehartford.com)
– Travelers Companies
– Sector: Property & Casualty
– Year Founded: 1853
– Annual Revenue: $32.4 billion (2019)
– Description: Travelers is a leading provider of property casualty insurance for auto, home, and business. It also offers a wide range of bond and specialty insurance products through independent agents, brokers, and wholesalers.
– Link: [Travelers Companies](https://www.travelers.com)
– Nationwide Mutual Insurance Company
– Sector: Property & Casualty, Life & Retirement
– Year Founded: 1926
– Annual Revenue: $49.3 billion (2019)
– Description: Nationwide is a leading insurance and financial services organization serving domestic and international markets. It offers a range of insurance and financial services, including auto, home, life, and commercial insurance.
– Link: [Nationwide](https://www.nationwide.com)
– American Family Insurance Group
– Sector: Property & Casualty, Life
– Year Founded: 1927
– Annual Revenue: $12.9 billion (2019)
– Description: American Family Insurance is a private mutual company that focuses on property, casualty, and auto insurance, as well as commercial insurance, life, health, and homeowners coverage.
– Link: [American Family Insurance Group](https://www.amfam.com)
These are the top commercial insurance underwriting companies in the US, each with a unique set of offerings and a strong presence in the insurance industry.
The US commercial insurance underwriting sector is dominated by established and diversified companies that offer a wide range of insurance products and services to businesses and individuals. With their long-standing reputations and strong financial positions, these companies continue to play a pivotal role in ensuring the safety and security of assets and livelihoods across the country.
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