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Antin Infrastructure Partners is a private equity firm specializing in infrastructure investments across sectors such as energy and environment, digital technology, transportation, and social infrastructure. Founded in Paris in 2007, the firm has expanded its presence with offices in London, New York, Luxembourg, and Singapore. As of December 2022, Antin managed €30.6 billion in assets. The firm focuses on acquiring majority stakes in infrastructure businesses, aiming to enhance operational performance and service quality through active management. Notable investments include the acquisition of a majority stake in Blue Elephant Energy AG, which operates a portfolio of wind and solar power plants in Europe and Latin America. Antin's strategic approach emphasizes value creation and long-term growth 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.