In exchange for giving Goldman Sachs millions of dollars of its business, SAC wanted something in return, the salesman said, something that was commensurate with its importance to the company. It wanted preferential treatment, particularly when it came to moves Goldman’s analysts made that might affect a company’s stock price. “If you change a penny or two on your estimates, you call SAC first,” the salesman said. If an analyst was going to recommend that investors buy or sell shares in a company he or she covered, or revise the amount of money he or she estimated the company would make next
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