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David Gelbaum (born in c. 1950) is an American businessman and primarily green technology investor and environmental philanthropist. Since 2002, he has invested up to $500 million in clean-tech companies through his Quercus Trust, with a portfolio of businesses involved in nearly every aspect of the emerging green economy, be it renewable energy, smart electric grids, sustainable agriculture, electric cars or biological remediation of oil spills. He is CEO and Chairman of the Board of Entech Solar, a company he co-founded with Mark O'Neill. Gelbaum studied at University of California, Berkeley and Humboldt State College in Northern California before graduating with a B.A. in mathematics from University of California, Irvine. After graduating, he worked for a math professor, Edward O. Thorp, whose theories led to the establishment of what became Princeton Newport Partners, one of the first investment firms to use mathematical formulas to price stocks and derivatives. Princeton/Newport Partners collapsed in 1989, following the indictment of five executives in connection with a scheme to create illegal tax losses. Mr. Thorp and Mr. Gelbaum were not implicated, and an appellate court later overturned the other executives’ convictions.〔 From 1972 to 1989, Gelbaum worked at the financial firm Oakley & Sutton performing quantitative modeling for stock price returns and derivative securities. He moved to TGS Management with a similar capacity until 2002. His investment focus is on the environmental technology and renewable energy industries having served on various public company boards in these industries, including the boards of Solar Enertech Corp., ThermoEnergy Corporation, Clean Power Technologies, Inc. and Energy Focus, Inc.〔(''Forbes'': David Gelbaum - At a Glance )〕 ==Philanthropy== Gelbaum is a signatory to The Giving Pledge, a group of wealthiest people in the world to make a commitment to give most of their wealth to philanthropic causes. He is married to Monica Chavez who is a co-signatory to the pledge. Gelbaum has already given $200 million to the Sierra Club and $250 million to the Wildlands Conservancy, a land trust he co-founded that has acquired and preserved 1,200 square miles of land in California, including more than a half million acres of the Mojave Desert.〔 He notably gave $93 million to the American Civil Liberties Union. Some of his biggest donations, around $250 million, has gone to aid American veterans of the wars in Iraq and Afghanistan through a charity he founded, the Iraq Afghanistan Deployment Impact Fund (IADIF).〔(CalFund: Iraq Afghanistan Deployment Impact Fund )〕 In a letter to The Giving Pledge, he mentioned his father was a World War II veteran.〔(Giving Pledge website: Letter by David Gelbaum )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「David Gelbaum」の詳細全文を読む スポンサード リンク
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