At 9.47 a.m., Sensex was at 57,392 points, down 520 points or 0.90 per cent, whereas Nifty at 17,230 points was down 162 points or 0.93 per cent. Among the stocks, Hindalco, Eicher Motors, Dr Reddy's, SBI, and HDFC Life were the top five losers among the Nifty 50 companies, declining 3.6 per cent, 2.3 per cent, 2.2 per cent, 2.1 per cent, and 2.1 per cent, respectively.