The Hanover Insurance Group, Inc. (NYSE: THG), formerly known as Allmerica Financial Corporation, is a Worcester, Massachusetts-based holding company that provides a diverse suite of property and casualty (P&C) insurance products and services across the United States. Operating primarily through independent agents and brokers, the company organizes its business into four reporting segments: Core Commercial, Specialty, Personal Lines, and Other. Core Commercial offers commercial multiple peril, commercial auto, and workers' compensation coverages to small and mid-sized businesses. Specialty provides professional and executive lines, marine, surety, and excess and surplus (E&S) coverages. Personal Lines delivers personal automobile, homeowners, and umbrella coverages. The company's strategic focus centers on maintaining a highly disciplined underwriting approach, leveraging deep local relationships with independent agencies, and utilizing advanced technology and analytics to optimize risk selection.

Research as of 19 Jun 2026