American Financial Group is an insurance holding company that provides specialized property and casualty insurance through its Great American Insurance Group subsidiary, serving commercial customers across four main business segments: property and transportation (agricultural crop insurance, commercial property, and marine coverage), specialty casualty (excess liability, workers' compensation, and professional liability), specialty financial (fidelity, surety, and trade credit coverage), and other lines. The company operates 36 insurance subsidiaries under a decentralized entrepreneurial model that balances local underwriting autonomy with centralized investment and administrative support, competing on service quality, claims handling reputation, financial strength, pricing, and specialized underwriting expertise. AFG generates revenue through insurance premiums distributed by independent agents and brokers and earns returns on a large investment portfolio of primarily investment-grade fixed-income securities.