Stock market today: The 30-share BSE Sensex advanced 187.64 points, or 0.23 per cent, to end at 83,570.35. During intraday trade, the index surged as much as 752.26 points, or 0.90 per cent, to touch 84,134.97. The broader NSE Nifty rose 28.75 points, or 0.11 per cent, to settle at 25,694.35.