Rengan Rajaratnam, the younger brother of convicted Galleon Group founder Raj Rajaratnam, was cleared on Tuesday of conspiring to engage in insider trading while at the hedge fund, ending a five-year winning streak by U.S. prosecutors. After deliberating for less than four hours, a federal jury in New York found Rengan Rajaratnam, a former portfolio manager at Galleon, not guilty of the one conspiracy count he faced following the mid-trial dismissal by a judge of two more serious fraud charges. “You can go back to Brazil for the finals,” U.S.