Mercury Insurance

The Hanover Insurance Group, Inc., based in Worcester, Mass., is the holding company for several property and casualty insurance companies.

Progressive underwrites private and commercial auto insurance and specialty lines; it has almost 24 million personal auto policies in force and is one of the largest auto insurers in the United States. Progressive markets its policies through independent insurance agencies in the US and Canada and directly via the internet and telephone. Its premiums are split roughly equally between the agent and the direct channel. The company also offers commercial auto policies and entered homeowners insurance through an acquisition in 2015.

Provider of property and casualty insurance service based in Boston, Massachusetts. The company's property and casualty insurance service includes life insurance, real estate management and development, surety, commercial credit and investment management services to the customers.