The BSE Sensex and the Nifty 50 finished the session lower on July 28. The 30-share Sensex closed at the 80,891.02 level, down by 572.07 points or 0.7 per cent, and the Nifty 50 finished the session at 24,680.90, down by 156.1 points or 0.63 per cent. As of July 28, the headline indices have continued to decline for the third straight session.