At close, the Sensex was up 696.81 points or 1.22% at 57,989.30, and the Nifty was up 197.90 points or 1.16% at 17,315.50. About 1573 shares have advanced, 1745 shares declined, and 99 shares are unchanged.Tech Mahindra, BPCL, Tata Motors, Reliance Industries and IOC were among the top Nifty gainers, while losers were HUL, Nestle India, Britannia Industries, Cipla and Divis Lab.