John D. Arnold
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John Douglas Arnold (born 1974) is an American billionaire. In 2007, Arnold became the youngest billionaire in the U.S. His firm, Centaurus Advisors, LLC, was a Houston-based hedge fund specializing in trading energy products that closed in 2012. He now focuses on philanthropy through Arnold Ventures LLC. Arnold is a board member of Breakthrough Energy and since February 2024, is a member of the board of directors of Meta.
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