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Old Republic International Corp is engaged in the business of insurance underwriting and related services. The company operates in two segments: Specialty Insurance and Title Insurance. The insurance provided by the company includes Automobile Extended Warranty Insurance, Aviation, Commercial Automobile Insurance, Inland Marine, Travel Accident, Workers' Compensation, Financial Indemnity, and others. The company generates the majority of its revenue from Specialty Insurance. The Specialty Insurance provides property and liability insurance principally to commercial clients.

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.