Allstate Corporation

Allstate Corporation provides personal lines of insurance and is the second-largest insurer in this category in the US. Its subsidiaries include Allstate Insurance Company, Allstate Property and Casualty Insurance Company, Allstate Fire and Casualty Insurance Company, and Allstate Life Insurance Company.

AGA Service Company

AGA Service Company, also known as Allianz Global Assistance USA, provides a variety of insurance plans for travelers covering pre- and post-departure risks, lost baggage, medical and dental needs, and so on. Its parent company, Allianz Global Assistance, claims to have insured the Wright brothers' first flight and the construction of the Golden Gate Bridge.

GEICO

The Government Employees Insurance Company (GEICO) is an auto insurance company. It is the second largest auto insurer in the United States.  It is a wholly owned subsidiary of Berkshire Hathaway that as of 2014 provided coverage for more than 22 million motor vehicles owned by more than 13 million policy holders

USAA Casualty Insurance

USAA Casualty Insurance offers property and casualty insurance. It is a subsidiary of USAA, a Fortune-500 company.

United Services Automobile Association (USAA)

The United Services Automobile Association (USAA) is a diversified financial services group of companies offering banking, investing, and insurance to people and families that serve, or served, in the United States military. 

Safeco Insurance Company of America

Safeco Insurance Company of America is an insurance company that offers personal property and casualty insurance, including homeowner and fire insurance. Safeco is a subsidiary of Liberty Mutual Group, Inc.

John Hancock Life Insurance Company (USA)

John Hancock Life Insurance Company (USA) has four segments: protection, wealth management, financial products, and corporate and other. The protection section offers estate, business planning, and insurance products and services, such as life insurance and long term care insurance policies.

John Hancock Insurance, Inc. is a subsidiary of John Hancock Life Insurance Company (USA), which is in turn a subsidiary of Manulife.

Nationwide Insurance

Nationwide Mutual Insurance Company & Affiliated Companies is a group of large U.S. insurance and financial services companies based in Columbus, OH.