The Sensex at the Bombay Stock Exchange, which opened 178 points in the green in early trade today, was trading 111 points in the positive territory at 17,164 in late morning deals, when reports last came in. After losing almost 309 points yesterday, the 30-share index rebounded by 178 points or 1.01 per cent in opening trade today to 17,230.In a similar fashion, the wide-based National Stock Exchange index Nifty was trading up by 33 points at 5,217.