Benchmark indices opened flat today. At 9.15 AM IST, Nifty stood at 13,373 gaining 114 points or 0.87%. Sensex was up with 133 points at 45,560. Pharma and Metal outshone positively in individual sectors. Canara Bank, Glenmark and Godrej Corp were the top gainers. RBL, Adani Ports and Sun Pharma clubbed in top losers.