Markel is a financial holding company that markets and underwrites specialty insurance products. It operates in threee segments: Insurance, Reinsurance, Markel Ventures, and Others. Insurance segment offers general and professional liability, personal lines, marine and energy, specialty programs, and workers' compensation insurance products, and property coverages. Reinsurance segment offers transaction, healthcare, and environmental impairment liability, and specialty treaty reinsurance. Markel Ventures segment provides equipment used in baking systems and food processing, transportation, and architecture. The company also provides healthcare, leasing and investment services, as well as operates as an insurance and investment fund manager.