The Progressive Corporation, an insurance holding company, provides personal and commercial auto, personal residential and commercial property, business related general liability, and other specialty property-casualty insurance products and related services in the United States. It operates in three segments: Personal Lines, Commercial Lines, and Property. The Personal Lines segment writes insurance for personal autos and recreational vehicles (RV). This segment's products include personal auto insurance; and special lines products, including insurance for motorcycles, ATVs, RVs, watercrafts, snowmobiles, and related products. The Commercial Lines segment provides auto-related liability and physical damage insurance, and business-related general liability and property insurance for autos, vans, and pick-up trucks used by small businesses, as well as non-fleet taxis, black-car services, and airport taxis; tractors, trailers, and straight trucks primarily used by regional general freight and expeditor-type businesses, and long-haul operators; dump trucks used by light contractors and heavy constructions; log trucks and garbage trucks used by dirt, sand and gravel, logging, garbage/debris removal, and coal-type businesses; and tow trucks and wreckers used in towing services and gas/service station businesses. The Property segment writes residential property insurance for homeowners, other property owners, and renters, as well as offers manufactured homes, personal umbrella insurance, and primary and excess flood insurance. The company offers policy issuance and claims adjusting services; acts as an agent to homeowners, general liability, workers' compensation insurance, and other products; and reinsurance services. It sells its products through independent insurance agencies, as well as through mobile applications and over the phone. The Progressive Corporation was founded in 1937 and is headquartered in Mayfield Village, Ohio.

The Hanover Insurance Group, Inc., through its subsidiaries, provides various property and casualty insurance products and services in the United States. The company operates through four segments: Core Commercial, Specialty, Personal Lines, and Other. The Commercial Lines segment offers commercial multiple peril, commercial automobile, workers' compensation, and other commercial lines coverage. The Specialty segment provides professional and executive Lines, marine, and surety and other, as well as specialty property and casualty, such as program business, specialty industrial business, excess and surplus business, and specialty general liability coverage. The Personal Lines segment offers personal automobile and homeowner's coverages, as well as other personal coverages, such as personal umbrella, inland marine, fire, personal watercraft, personal cyber, and other miscellaneous coverages. The Other segment markets investment advisory services to institutions, insurance companies, pension funds, and other organizations. The Hanover Insurance Group, Inc. markets its products and services through independent agents and brokers. The company was formerly known as Allmerica Financial Corp. and changed its name to The Hanover Insurance Group, Inc. in December 2005. The Hanover Insurance Group, Inc. was founded in 1852 and is headquartered in Worcester, Massachusetts.

Selective Insurance Group, Inc., together with its subsidiaries, provides insurance products and services in the United States. The company operates through four segments: Standard Commercial Lines, Standard Personal Lines, E&S Lines, and Investments. It offers casualty insurance products that covers the financial consequences of employee injuries in the course of employment and bodily injury and/or property damage to a third party; property insurance products, which covers the accidental loss of an insured's real property, personal property, and/or earnings due to the property's loss; and flood insurance products. The company also invests in fixed income investments and commercial mortgage loans, as well as equity securities, short-term investments, and alternative investments, and other investments. It offers its insurance products and services to businesses, non-profit organizations, local government agencies, and individuals through independent retail agents and wholesale general agents. The company was founded in 1926 and is headquartered in Branchville, New Jersey.

Lemonade, Inc. provides various insurance products through various channels in the United States, Europe, and the United Kingdom. Its insurance products include stolen or damaged property, and personal liability that protects its customers if they are responsible for an accident or damage to another person or their property. The company also offers renters, homeowners, car, pet, and life insurance products, as well as landlord insurance policies. In addition, it operates as an agent for other insurance companies. The company was formerly known as Lemonade Group, Inc. and changed its name to Lemonade, Inc. Lemonade, Inc. was incorporated in 2015 and is headquartered in New York, New York.

United Fire Group, Inc., together with its subsidiaries, provides property and casualty insurance for individuals and businesses in the United States. The company offers commercial and personal lines of property and casualty insurance; and reinsurance coverage for property and casualty insurance. Its commercial lines include fire and allied lines, other liability, automobile, workers' compensation, fidelity and surety coverage, and other insurance products; and personal lines comprise automobile, and fire and allied lines coverage, including homeowners, as well as provides assumed reinsurance products. The company sells its products through a network of independent agencies. United Fire Group, Inc. was incorporated in 1946 and is headquartered in Cedar Rapids, Iowa.

Donegal Group Inc., an insurance holding company, provides property and casualty insurance to businesses and individuals. It operates through three segments: Investment Function, Personal Lines of Insurance, and Commercial Lines of Insurance. The company offers private passenger automobile policies that provide protection against liability for bodily injury and property damage arising from automobile accidents, as well as protection against loss from damage to automobiles; and homeowners policies, which provide coverage for damage to residences and their contents from a range of perils, including fire, lightning, windstorm, and theft, as well as liability of the insured arising from injury to other persons or their property. Donegal Group Inc. also offers commercial automobile policies that provide protection against liability for bodily injury and property damage arising from automobile accidents and protection against loss from damage to automobiles owned by the insured; commercial multi-peril policies that provide protection to businesses against combining liability and physical damage coverages; and workers' compensation policies, which provide benefits to employees for injuries sustained during employment. The company markets its insurance products primarily to Mid-Atlantic, Midwestern, New England, Southern, and Southwestern regions through independent insurance agencies. Donegal Group Inc. was incorporated in 1986 and is based in Marietta, Pennsylvania. Donegal Group Inc. operates as a subsidiary of Donegal Mutual Insurance Company.

American Coastal Insurance Corporation, through its subsidiaries, primarily engages in the commercial and personal property, and casualty insurance business in the United States. The company offers structure, content, and liability coverage for standard single-family homeowners, renters, and condominium unit owners. It also provides commercial multi-peril property insurance for residential condominium associations and apartments, as well as loss or damage to buildings, inventory, and equipment caused by fire, wind, hail, water, theft, and vandalism. In addition, the company offers equipment breakdown, identity theft, and cyber security policies. The company markets and distributes its products through a network of independent agencies. The company was formerly known as United Insurance Holdings Corp. and changed its name to American Coastal Insurance Corporation in August 2023. American Coastal Insurance Corporation was founded in 1999 and is based in Saint Petersburg, Florida.

Kingstone Companies, Inc., through its subsidiary, provides property and casualty insurance products to individuals in the United States. It offers personal line of insurance products, such as homeowners and dwelling fire, cooperative/condominiums, renters, and personal umbrella policies. The company also provides for-hire vehicle physical damage only policies for livery and car service vehicles and taxicabs; and canine legal liability policies. In addition, it offers reinsurance products. The company underwrites its products through retail and wholesale agents and brokers. The company was formerly known as DCAP Group, Inc. and changed its name to Kingstone Companies, Inc. in July 2009. Kingstone Companies, Inc. was founded in 1886 and is headquartered in Kingston, New York.