Benchmark indices Nifty and Sensex fell further into negative territory on October 31, driven by a sharp decline in IT stocks and weak global cues, particularly disappointing US economic data. At noon, the Sensex was down 424.10 points (0.53%) at 79,518.08, while the Nifty dropped 104.50 points (0.43%) to 24,236.30. Despite this, Nifty Pharma and Healthcare gained over a percent, with Cipla, L&T, and ONGC emerging as key gainers. The broader market showed mixed results, with midcaps slipping and smallcaps rising nearly one percent.