Stock market today: The NSE Nifty dropped 203 points or 0.82 per cent to finish at 24,565.35. The BSE Sensex experienced volatility, falling 585.67 points or 0.72 per cent to close at 80,599.91, after touching a low of 80,495.57, down 690.01 points or 0.84 per cent during the session.