Sensex was up 414 points or 0.51 per cent at 81,562 and Nifty was up 136 points or 0.55 per cent at 24,712. Buying was seen in the midcap and smallcap stocks. Nifty midcap 100 index was up 510 points or 0.92 per cent at 56,030 and Nifty smallcap 100 index was up 132 points or 0.78 per cent at 17,035.