In what has amounted to one of the largest and most prominent cases of insider trading, a billionaire hedge fund manager was found guilty Wednesday of fraud and conspiracy by a federal jury in Manhattan. Raj Rajaratnam is the co-founder of the hedge fund Galleon Group – he was also considered one of the savviest traders on Wall Street. But for nine months, the federal government secretly recorded Rajaratnam’s phone conversations with traders and powerful corporate insiders. We get the back story with Louise Story, Wall Street and finance reporter for The New York Times.