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American Financial Group Inc is an insurance holding company. Through its subsidiaries, it is engaged in the property and casualty insurance business, focusing on specialized commercial products for businesses. The group operates through two segments: Property and Casualty Insurance, which generates maximum revenue, and Other. The Property and Casualty Insurance segment is further divided into different sub-segments, such as Property and transportation, Specialty casualty, and Specialty financial. These sub-segments offer insurance coverage for vehicles and commercial property, customized programs for small to mid-sized businesses, workers' compensation insurance, risk management insurance programs for lending and leasing institutions, trade credit insurance, and other insurance products.

Berkshire Hathaway is a holding company with a wide array of subsidiaries engaged in diverse activities. The firm's core business segment is insurance, run primarily through Geico, Berkshire Hathaway Reinsurance Group, and Berkshire Hathaway Primary Group. Berkshire has used the excess cash thrown off from its operations to acquire Burlington Northern Santa Fe (railroad), Berkshire Hathaway Energy (utilities and energy distributors), and the companies that make up its manufacturing, service, and retailing operations (which include Precision Castparts, Lubrizol, Clayton Homes, Marmon, and IMC/ISCAR). The conglomerate is unique in that it is run on a completely decentralized basis.