While the global uncertainties continue to grow, benchmark indices Sensex and Nifty slumped in early trade on Thursday. The sudden surge is also because of a sharp spike in crude oil prices, weak global trends and foreign fund outflows.

During the early hours of Thursday, the 30-share BSE Sensex tumbled 821.79 points to 76,674.57 in early trade. The 50-share NSE Nifty dived 287.3 points to 23,890.35.