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CNA Financial Corporation (CNAF) is an insurance holding company that provides commercial property and casualty insurance. The company operates under five segments: Specialty, Commercial and International being its core business, and two segments for its non-core businesses, which are Life and Group and Corporate and Other. CNAF, through its segments, provides professional, financial, specialty property, and casualty products to small businesses and medium-scale organizations. It has its business spread across Continental Europe, United Kingdom, and Canada. The majority of the revenues are generated from the Specialty and Commercial segment of the business.

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.