Equity benchmark BSE Sensex dropped over 150 points on Thursday tracking losses in banking stocks amid unabated foreign fund outflow. The 30-share index was trading 170.98 points, or 0.45 per cent, lower at 38,006.97 at 0930 hours. Similarly, the broader NSE Nifty fell 48.60 points, or 0.43 per cent, to 11,264.70.