The next day Henry Laufer, one of the firm’s senior executives, wrote back. He agreed. Renaissance, he added, had “independent evidence” that something was amiss with Madoff. Then Renaissance’s risk manager, Paul Broder—the person responsible for making sure the fund didn’t put its money anywhere dangerous—weighed in with a long, detailed analysis of the trading strategy that Madoff claimed to be using. “None of it seems to add up,” he concluded. The three of them decided to conduct their own in-house investigation. Their suspicions deepened. “I came to the conclusion that we didn’t understand
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