Stock Market Today: Headline indices rebounded from the previous session’s lows on May 23 amid strong performance across most sectors. The headline indices ended the current week on a positive note. The 30-share Sensex ended 769.09 points higher or 0.95 per cent at 81,721.08 level. The Nifty 50 index ended at 24,853.15, up by 243.45 points or 0.99 per cent higher.