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Reinsurance Group of America Inc is an insurance holding company with operations in the United States, Latin America, Canada, Europe, Africa, Asia, and Australia. The core products and services include life reinsurance, living benefits reinsurance, group reinsurance, health reinsurance, financial solutions, facultative underwriting, and product development. The company's operations are divided into traditional and financial solution businesses.

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.