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BB Biotech AG is an investment company that focuses on investments in the biotechnology industry. The company is headquartered in Schaffhausen, Switzerland, and specializes in managing a portfolio primarily composed of companies involved in the development of innovative drugs and therapies. It seeks to capture growth opportunities in the biotech sector by investing in firms with cutting-edge scientific research and promising product pipelines. BB Biotech AG's investment strategy is informed by an in-depth analysis of market trends and scientific advancements, ensuring a dynamic and diversified portfolio. Its geographic footprint is primarily in Europe, with strategic investments in biotech firms 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.