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Walker & Dunlop Inc is a United States-based commercial real estate finance company. It is principally engaged in originating, selling, and servicing a number of multifamily and other commercial real estate financing products that are sold under the programs of Freddie Mac, Fannie Mae, Ginnie Mae, and the Federal Housing Administration. The company is managed based on three reportable segments: Capital Markets (CM), Servicing & Asset Management (SAM), and Corporate. The company generates a majority of its total revenue from gains from mortgage banking activities and servicing fees. It conducts business solely in the United States.

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.