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Powszechny Zakład Ubezpieczeń SA (PZU) is a financial services company based in Warsaw, Poland, specializing in insurance and asset management. PZU offers a range of insurance products, including life, property, and casualty insurance, along with health insurance services. The company also engages in pension fund management and other asset management services. Originally founded in 1803, PZU holds a significant position in the Polish insurance market and has expanded its operations throughout Central and Eastern Europe. It leverages a strong distribution network and brand recognition as strategic advantages.

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.