Former Goldman Sachs director Rajat Gupta surrendered to FBI officials on Wednesday morning. Gupta faces criminal charges in a massive hedge fund insider trading case. He has been under investigation over whether he leaked corporate secrets to Raj Rajaratnam, the co-founder of the hedge fund the Galleon Group. Rajaratnam was sentenced to 11 years in prison for trading on illegal stock tips earlier this month. Louise Story, Wall Street and finance reporter for The New York Times, has the latest details on the story.