Indian benchmark indices surged 3% during the session on Friday following positive Asian peers. At 12:10 pm, the Sensex was 868 points up and Nifty was trading above 8,500, gaining 3.10%. GAIL, ONGC, Infosys, ITC and Tech Mahindra were the top five Nifty gainers. While IndusInd Bank, HDFC Bank, ICICI Bank, Titan and Kotak Mahindra Bank were the top losers. The Indian rupee was down 3 paise at 75.02 against the US dollar.