The BSE Sensex was trading 91 points down at 17,188 points a short while ago. It declined by over 27 points in the early trade today. The Sensex rose by almost 176 points in the previous three sessions.Similarly, the wide-based National Stock Exchange index Nifty shed 32 points to 5,210.Asian stocks were mostly lower in their early trade after weak economic data in the US overnight.