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Radian Group Inc is engaged in mortgage and real estate services. It provides both credit-related mortgage insurance coverage and other products and services across the residential real estate and mortgage finance industries. It has one reportable segment, Mortgage Insurance, which primarily derives its revenue by providing private mortgage insurance on residential first-lien mortgage loans to mortgage lending institutions and mortgage credit investors.

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.