Nifty slides below 24,950 mark, PSU bank stocks decline; VIX rallies 6.56%

At 10:30 ST, the barometer index, the S&P BSE Sensex, tumbled 658.83 points or 0.81% to 81,524.86. The Nifty 50 index slipped 205.10 points or 0.82% to 24,940.