In 2024, Travelers Companies Inc. was the largest writer of commercial lines insurance in the United States. In 2024, Travelers Companies Inc. wrote direct premiums amounting to approximately  billion U.S. dollars, up from billion U.S. dollars from the previous year and overtaking Chubb Ltd. which was the biggest commercial line insurer in the past three years.
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Insurance Information Institute. (November 24, 2025). Leading writers of commercial lines insurance in the United States in 2024, by direct premiums (in billion U.S. dollars) [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved August 04, 2026, from /statistics/186457/us-commercial-lines-insurance-leading-writers-by-direct-premiums-written/
Insurance Information Institute. "Leading writers of commercial lines insurance in the United States in 2024, by direct premiums (in billion U.S. dollars)." Chart. November 24, 2025. ÌÇÐÄÆÆ½â°æ. Accessed August 04, 2026. /statistics/186457/us-commercial-lines-insurance-leading-writers-by-direct-premiums-written/
Insurance Information Institute. (2025). Leading writers of commercial lines insurance in the United States in 2024, by direct premiums (in billion U.S. dollars). ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: August 04, 2026. /statistics/186457/us-commercial-lines-insurance-leading-writers-by-direct-premiums-written/
Insurance Information Institute. "Leading Writers of Commercial Lines Insurance in The United States in 2024, by Direct Premiums (in Billion U.S. Dollars)." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 24 Nov 2025, /statistics/186457/us-commercial-lines-insurance-leading-writers-by-direct-premiums-written/
Insurance Information Institute, Leading writers of commercial lines insurance in the United States in 2024, by direct premiums (in billion U.S. dollars) ÌÇÐÄÆÆ½â°æ, /statistics/186457/us-commercial-lines-insurance-leading-writers-by-direct-premiums-written/ (last visited August 04, 2026)
Leading writers of commercial lines insurance in the United States in 2024, by direct premiums (in billion U.S. dollars) [Graph], Insurance Information Institute, November 24, 2025. [Online]. Available: /statistics/186457/us-commercial-lines-insurance-leading-writers-by-direct-premiums-written/