Arthur J. Gallagher & Co., together with its subsidiaries, provides insurance and reinsurance brokerage, consulting, and third-party property/casualty claims settlement and administration services to entities and individuals worldwide. It operates in Brokerage and Risk Management segments. The Brokerage segment offers retail and wholesale insurance and reinsurance brokerage services; assists retail brokers and other non-affiliated brokers in the placement of specialized and hard-to-place insurance; and acts as a brokerage wholesaler, managing general agent, and managing general underwriter for distributing specialized insurance coverages to underwriting enterprises. This segment performs activities, including marketing, underwriting, issuing policies, collecting premiums, appointing and supervising other agents, paying claims, and negotiating reinsurance; and offers services in the areas of insurance and reinsurance placement, risk of loss management, and management of employer sponsored benefit programs. The Risk Management segment provides contract claim settlement and administration services; and claims management, loss control consulting, and insurance property appraisal services. The company offers its services through a network of correspondent brokers and consultants. It serves commercial, industrial, public, religious, and nonprofit entities, as well as underwriting enterprises. Arthur J. Gallagher & Co. was founded in 1927 and is headquartered in Rolling Meadows, Illinois.

The Travelers Companies, Inc., through its subsidiaries, provides a range of commercial and personal property, and casualty insurance products and services to businesses, government units, associations, and individuals in the United States and internationally. The company operates through three segments: Business Insurance, Bond & Specialty Insurance, and Personal Insurance. The Business Insurance segment offers workers' compensation, commercial automobile and property, general liability, commercial multi-peril, employers' liability, public and product liability, professional indemnity, marine, aviation, onshore and offshore energy, construction, terrorism, personal accident, and kidnap and ransom insurance products. This segment operates through select accounts, which serve small businesses; commercial accounts that serve mid-sized businesses; national accounts, which serve large companies; and national property and other that serve large and mid-sized customers, commercial trucking industry, and agricultural businesses, as well as markets and distributes its products through brokers, wholesale agents, and program managers. The Bond & Specialty Insurance segment provides surety, fidelity, management and professional liability, and other property and casualty coverages and related risk management services through independent agencies and brokers. The Personal Insurance segment offers property and casualty insurance covering personal risks, primarily automobile and homeowners' insurance to individuals through independent agencies and brokers. The Travelers Companies, Inc. was founded in 1853 and is based in New York, New York.

The Allstate Corporation, together with its subsidiaries, provides property and casualty, and other insurance products in the United States and Canada. It operates in five segments: Allstate Protection; Protection Services; Allstate Health and Benefits; Run-off Property-Liability; and Corporate and Other segments. The Allstate Protection segment offers private passenger auto and homeowners insurance; other personal lines products; and commercial lines products through agents, contact centers, and online. The Protection Services segment provides consumer product protection; protection and insurance products, including vehicle service contracts, guaranteed asset protection, road hazard tire and wheel, and paintless dent repair protection; and roadside assistance, device and mobile data collection services, and analytic solutions using automotive telematics information, as well as identity theft protection and remediation services. This segment also offers its products under various brands, including Allstate Protection Plans, Allstate Dealer Services, Allstate Roadside, Arity, Avail, and Allstate Identity Protection. The Allstate Health and Benefits segment provides life, accident, critical illness, short-term disability, and other health insurance products; stop-loss and fully insured group health products to employers; and short-term medical and medicare supplement insurance to individuals. The Run-off Property-Liability segment offers property and casualty insurance coverage that primarily relates to policies written during the 1960s through the mid-1980s. The Corporate and Other segment provides debt services, as well as non-insurance operations. It sells its products through agents, independent agents, call and contact centers, retailers, direct to consumer, wholesale partners, and affinity groups, as well as through online and mobile applications. The Allstate Corporation was founded in 1931 and is headquartered in Northbrook, Illinois.

American International Group, Inc. offers insurance products for commercial, institutional, and individual customers in North America and internationally. It operates through three segments: General Insurance, Life and Retirement, and Other Operations. The General Insurance segment provides commercial and industrial property insurance, including business interruption and package insurance that cover exposure to made and natural disasters; general liability, environmental, commercial automobile liability, workers' compensation, excess casualty, and crisis management insurance products; and professional liability insurance. This segment offers marine, energy-related property insurance, aviation, political risk, trade credit, trade finance, and portfolio solutions, as well as operates reinsurance business; voluntary and sponsor-paid personal accident, and supplemental health products; and personal auto and personal property insurance. Its Life and Retirement segment offers individual retirement products, including variable, fixed index, and fixed annuities, as well as retail mutual funds; group retirement products comprising record-keeping, plan administrative and compliance services, financial planning, and advisory solutions; life insurance, including term and universal life insurance; and institutional markets products, which includes wrap products, structured settlement, pension risk transfer annuities, corporate and bank-owned life insurance, high net worth, and guaranteed investment contract products. It distributes its products through a network of brokers, agents, advisors, banks, and other distributors. The company was founded in 1919 and is headquartered in New York, New York.

CNA Financial Corporation provides commercial property and casualty insurance products in the United States and internationally. It operates through Specialty, Commercial, International, Life & Group, and Corporate & Other segments. The company offers professional liability coverages and risk management services to various professional firms, including architects, real estate agents, and accounting and law firms; directors and officers, employment practices, fiduciary, and fidelity and cyber coverages to small and mid-size firms, public and privately held firms, and not-for-profit organizations; professional and general liability, as well as associated casualty coverages for healthcare industry; surety and fidelity bonds; and warranty and alternative risks products. It also provides property, marine, boiler, and machinery coverage insurance products; casualty insurance products comprising workers' compensation, general and product liability, commercial auto, umbrella, and excess and surplus coverages; specialized loss-sensitive insurance programs and total risk management services; and run-off long term care policies. The company was founded in 1853 and is based in Chicago, Illinois. CNA Financial Corporation is a subsidiary of Loews Corporation.

First American Financial Corporation, through its subsidiaries, provides financial services. It operates through Title Insurance and Services, and Home Warranty segments. The Title Insurance and Services segment issues title insurance policies on residential and commercial property, as well as offers related products and services internationally. This segment also provides closing and/or escrow services; products, services, and solutions to mitigate risk or otherwise facilitate real estate transactions; and appraisals and other valuation-related products and services, lien release and document custodial services, warehouse lending services, default-related products and services, document generation services, mortgage loans subservicing, and related products and services, as well as banking, trust, and wealth management services. In addition, it accommodates tax-deferred exchanges of real estate; and maintains, manages, and provides access to title plant data and records. This segment offers its products through a network of direct operations and agents in various states and in the District of Columbia, as well as in Canada, the United Kingdom, Australia, New Zealand, South Korea, and internationally. The Home Warranty segment provides home warranty products, including residential service contracts that cover residential systems, such as heating and air conditioning systems, and various appliances against failures that occur as the result of normal usage during the coverage period. This segment operates in various states and the District of Columbia. The company was founded in 1889 and is headquartered in Santa Ana, California.

Kemper Corporation, a diversified insurance holding company, engages in the provision of insurance products to individuals and businesses in the United States. The company operates through three segments: Specialty Property & Casualty Insurance, Preferred Property & Casualty Insurance, and Life & Health Insurance. It provides preferred and specialty automobile, homeowners, renters, fire, umbrella, general liability, and various other property and casualty insurance to individuals, as well as commercial automobile insurance to businesses. The company also offers life insurance, including permanent and term insurance; and supplemental accident and health insurance products, such as Medicare supplement insurance, fixed hospital indemnity, home health care, specified disease, and accident-only plans to individuals in rural, suburban, and urban areas. It distributes its products through independent agents and brokers. The company was formerly known as Unitrin, Inc. and changed its name to Kemper Corporation in August 2011. Kemper Corporation was incorporated in 1990 and is headquartered in Chicago, Illinois.

RLI Corp., an insurance holding company, underwrites property and casualty insurance. Its Casualty segment provides commercial and personal coverage products; and general liability products, such as coverage for third-party liability of commercial insureds, including manufacturers, contractors, apartments, and mercantile. It also offers coverages for security guards and environmental liability for underground storage tanks, contractors and asbestos, and environmental remediation specialists; and professional liability coverages for errors and omission coverage for small to medium-sized design, technical, computer, and miscellaneous professionals. This segment provides commercial automobile liability and physical damage insurance to local, intermediate and long haul truckers, public transportation entities, and other types of specialty commercial automobile risks; incidental and related insurance coverages; inland marine coverages; management liability coverages, such as directors and officers liability insurance, fiduciary liability and coverages, employment practice liability, and for various classes of risks, including public and private businesses; and home business insurance products. The company's Property segment offers commercial property, cargo, hull, protection and indemnity, marine liability, inland marine, homeowners' and dwelling fire, and other property insurance products. Its Surety segment offers commercial surety bonds for medium to large-sized businesses; small bonds for businesses and individuals; and bonds for small to medium-sized contractors. The company also engages in various reinsurance coverages. It markets its products through branch offices, wholesale and retail brokers, carrier partners, and underwriting and independent agents. RLI Corp. was incorporated in 1965 and is headquartered in Peoria, Illinois.