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Barclays is a universal bank headquartered in the United Kingdom. It operates via five principal segments; UK (retail), UK corporate bank, private bank and wealth management, investment bank, and US consumer bank. In its UK segment, the bank provides current accounts, mortgages, savings and investment management services, credit cards, and business banking services to retail clients and small and medium-size enterprises. The international segment includes a corporate bank offering banking solutions to large corporates, a bulge-bracket global investment bank, and a credit card and payments 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.