At 12.08 pm, the 30 stock S&P BSE Sensex was trading at 56,992.35 points, which is 1160.57 points or 2.00 per cent lower from its previous session's close. The broader Nifty 50 of the National Stock Exchange was trading 364.80 points or 2.1 per cent down at 17,009.95 points from its previous session's close at 17,374.75 points.