The BSE benchmark Sensex was up by 137 during noon. The 30-share barometer, which was up by more than 150 pts during early trade, though lost few points during noon trading but still was up by 137 pts. or .73 % and was trading at 18,846.Similarly, the wide-based National Stock Exchange index Nifty was up by 38 points, or 0.68 per cent, to 5,714.