Cincinnati Financial Corporation

Cincinnati Financial Corporation (Nasdaq: CINF) is a property casualty insurer based in Fairfield, Ohio. It sells its coverage almost entirely through independent agents. It is among the top property casualty insurers in the country. Life insurance, specialty lines, and a London-based underwriting operation round out its business.

Website: www.cinfin.com

Head office address: 6200 S. Gilmore Road, Fairfield, Ohio 45014

Founded: 1950 (The Cincinnati Insurance Company); holding company formed 1968

Founders: John J. Schiff Sr., Robert C. Schiff, Chester T. Field, and Harry M. Turner

Company type: public company (Nasdaq: CINF); S&P 500 component

Business focus: property casualty insurance, life insurance, and specialty and reinsurance lines

Regions served: 46 US states, plus the UK through a Lloyd’s syndicate

History of Cincinnati Financial Corporation

The company began in 1950, when four independent agents started The Cincinnati Insurance Company in Cincinnati, Ohio. It grew for the next two decades on the strength of its agency relationships. In 1968, the business reorganized under a new public holding company.

Acquisitions and internal expansion since then turned a regional property casualty writer into a broader insurance group. Key milestones include:

• 1950: four independent agents found The Cincinnati Insurance Company
• 1968: the insurer forms its parent holding company, Cincinnati Financial Corporation
• 1973: Inter-Ocean Corporation merges with the company in the largest acquisition in its history to that point
• 1991: the insurer tops $1 billion in direct written premiums for a single year
• 1997: Cincinnati Financial Corporation stock joins the S&P 500
• 2008: the group formally enters the excess and surplus lines market through The Cincinnati Specialty Underwriters Insurance Company
• 2015: the company launches Cincinnati Re to assume reinsurance risk and diversify its business profile
• 2019: the insurer enters the global market by acquiring Lloyd’s of London Syndicate 318, now Cincinnati Global
• 2025: the group crosses $10 billion in property casualty net written premiums for the first time in its 75-year history

That 2025 milestone followed 14 consecutive years of underwriting profitability. Cincinnati Financial Corporation says the streak comes from its selective, agent-driven approach rather than rapid volume growth.

What does CINF insure?

The insurer offers commercial, personal, life, and specialty coverage. It sells all of it through appointed independent agencies, not direct sales or captive agents. Its core lines include:

• commercial property, business auto, and general liability coverage for companies of varying sizes
• management liability, surety, and workers’ compensation lines for business customers
• personal home, auto, and umbrella coverage, including Cincinnati Private Client for high-net-worth households
• life insurance and fixed annuities through The Cincinnati Life Insurance Company
• excess and surplus lines placed through The Cincinnati Specialty Underwriters Insurance Company and its CSU Producer Resources brokerage
• assumed reinsurance through Cincinnati Re, and global specialty underwriting through Cincinnati Global’s Lloyd’s syndicate in London

The mix lets independent agents place most of a client’s personal and commercial insurance with one carrier. The company has kept this structure in place since its founding.

Cincinnati Financial Corporation in the market

The insurer sells almost exclusively through independent agents. That sets it apart from carriers that also sell direct or through captive agents. Cincinnati Financial Corporation says this approach supports steadier underwriting results over time than a faster, volume-driven model.