Rajat Gupta had been moved to a larger part of the prison when he came face to face with his nemesis, Raj Rajaratnam.Rajaratnam, a disgraced hedge fund manager, had not always been Gupta’s nemesis. ...

Rajat Gupta, the India-born former managing director of McKinsey, believes that not testifying at his high-profile insider-trading trial was a “bad call” and regrets not taking the stand in his de...