Sensex tumbles 301 pts on global sell-offThe Benchmark Sensex on Thursday slumped over 301 points to dip below the 34,000-mark in early trade, largely in sync with meltdown at other Asian markets following overnight losses at the Wall Street and fresh weakness in the rupee. Mumbai: The Benchmark Sensex on Thursday slumped over 301 points to dip below the 34,000-mark in early trade, largely in sync with meltdown at other Asian markets following overnight losses at the Wall Street and fresh weakness in the rupee. The 30-share BSE Sensex dropped by 301.49 points, or 0.89 per cent, to 33,732.47 points. Also, the broader NSE Nifty cracked below the 10,200-mark by falling 79.95 points, or 0.78 per cent, to 10,144.80. The Dow Jones Industrial Average ended 2.41 per cent down Wednesday and wiped out the gains for the year.