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CMC Markets PLC is a United Kingdom-based company that provides online financial trading and spread betting services. Operating in the financial sector, the company specializes in the trading of shares, indices, foreign currencies, commodities, and treasuries through its proprietary trading platform. Founded in 1989, CMC Markets has grown to offer both retail and institutional trading services globally.

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.