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Ratos AB is a Swedish investment company headquartered in Stockholm. It engages in the acquisition, development, and divestment of medium-sized Nordic companies across various industries. The company primarily focuses on businesses with potential for improvement and long-term growth within sectors such as construction, industrials, technology, and B2B services. Ratos AB operates as a conglomerate with a diverse portfolio, allowing for strategic flexibility and risk distribution. Founded in 1866, it has a long history of investment activities, leveraging its experience to enhance operational efficiency and foster value creation in its portfolio companies.

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.