The 30-share BSE Sensex slipped 457 points or 0.69 per cent to trade at 65,539, while the broader NSE Nifty was down 132 points or 0.67 per cent to trade at 19,501. Mid- and small-cap shares were down as Nifty Midcap 100 fell 0.11 per cent and small-cap shed 0.20 per cent.