Equity benchmark Sensex dropped over 600 points on Tuesday, dragged by losses in financial stocks amid selloff in global markets. The 30-share BSE Sensex was trading 697.81 points, or 1.90 per cent, lower at 35,995.88. In similar movement, the NSE Nifty 50 fell 200 points, or 1.85 per cent, to 10,602.70. Shares of the HDFC duo led the fall in the indices, shedding up to 3 per cent, after HDFC ...