WASHINGTON - Sanjay Valvani, an Indian-origin hedge fund manager charged with insider trading last week, has been found dead at his home in an apparent case of suicide, a media report said on Wednesday. Valvani, 44, who worked as a portfolio manager with hedge-fund firm Visium Asset Management LP, was accused of trading on confidential information about generic-drug approvals, the Wall Street Journal reported. He was found dead...