Fifth deal in three weeks underscores growing investor interest in retail division of Mukesh Ambani-controlled Reliance Industries. : Abu Dhabi state fund Mubadala Investment Co will invest Rs 6,247.5 crore to secure 1.4 percent in the retail unit of Reliance Industries (RIL), joining a posse of global investors scrambling to buy stakes in the Indian company. This latest investment —  with Silver Lake's co-investors and General Atlantic, the fifth in three weeks — values Reliance Retail at a pre-money equity value of Rs 4.285 lakh crore, RIL said in an exchange filing.