The Indian equity benchmarks opened marginally higher on Friday led by Infosys, HDFC Bank, Reliance Industries, HCL Technologies and Bajaj Finance. However, the gains were capped as ITC, HDFC, Bharti Airtel and Maruti Suzuki were facing selling pressure. As of 9:18 am, the Sensex rose 152 points to 51,683 and Nifty 50 index advanced 45 points to 15,218.