Sensex, Nifty today: Mixed global cues continued to haunt D-street investors with markets witnessing a sharp downtrend after witnessing 3 consecutive weeks of range-bound movement. Benchmark indices concluded Tuesday's trading session in the red territory. BSE Sensex plummeted over 600 points or 0.78%, ending the trading session at 80,737.51 level mark. The 50-stock index, NSE Nifty concluded the session at 24,542.50 level mark, down by 174 points or 0.70%.