lessons

During a presentation on Tuesday at which he was expected to reveal his latest bearish thesis, Mr. Einhorn, a hedge fund manager, introduced a discussion of General Motors with an ambiguous line. Mr. Einhorn, the president of Greenlight Capital, pivoted on the ticker symbol of Green Mountain Coffee Roasters, a target of his criticism last year. “If you take the CR away from GMCR, you get G.M.,” Mr. Einhorn said. Shares of General Motors plunged, before investors realized that the assessment of the automaker was positive. Mr. Einhorn emphasized the folly of taking his ideas on faith. “It doesn’t make sense to blindly follow me or anyone else into a stock,” he said as a preface to his presentation at the Value Investing Congress in Manhattan. “Do your own work. And when a successful investor shows you their work, check their work.” [Dealbook]