David Einhorn : The Money Kept Vanishing

Most of David Einhorn's ideas work out brilliantly. He is a 39-year-old hedge-fund manager in Manhattan who oversees $6 billion. Bull markets? Bear markets? It hardly matters. His stock portfolio has averaged 25% annual returns since 1996, when he opened Greenlight Capital.

Now Mr. Einhorn has written a book. But instead of packaging the real or contrived "secrets" to his success – as cliché would have it – he has tried to do something less triumphant and far gutsier. In "Fooling Some of the People All of the Time," he turns the spotlight on a single, stubborn investment play that never made much money for him but created six years of headaches.

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