Mumbai -- With selling pressure in heavy weights like Hindalco, Tisco, Bharti, Grasim and SBI, the Markets have witnessed the gloomy opening. However, profit booking and volatility is tripping the markets from negative to positive territory. In the morning session, the BSE 30-share Sensex lost by 19 point at 11460 and the NSE 50-share Nifty is down by 3 points at 3350. Hindalco, OBC, SAIL, Tisco, PNB, and HDFC Bank are the major losers among the 50-scrips of Nifty.