At close, the Sensex is down 768.87 points or 1.40% at 54,333.81, and the Nifty was down 252.60 points or 1.53% at 16,245.40. About 1204 shares have advanced, 2075 shares declined, and 96 shares are unchanged.Titan Company, Maruti Suzuki, Asian Paints, Hero MotoCorp and Tata Motors were among the top Nifty losers. On the other hand, Dr Reddy's Laboratories, ITC, Tech Mahindra, Sun Pharma and UltraTech Cement were the biggest gainers.