The BSE benchmark Sensex was trading 48 points up at 19,762 in late morning trade today on sustained buying by funds amid a firm trend in the Asian region. Sensex rose for the third straight day by adding over 27 points to 19,741 in early trade this morning. The 30-share barometer had gained nearly 288 points in the previous two sessions.Similarly, the wide-based National Stock Exchange index Nifty was trading 15 points up at 6008 a short while ago.