Mumbai, Oct 18: The 30-scrip Sensitive Index (Sensex) on Wednesday opened on a negative note during the morning session of the trade. The Sensex of the BSE after opening at 32,518.56 points touched a high of 32,537.49 and low of 32,492.40 points. On Tuesday, the Sensex closed at 32,609.16 points. The Sensex is trading at 31,519.20 points, down by 88.96 points or 0.28 per cent. On the other hand, the broader 51-scrip Nifty at National Stock Exchange (NSE) opened at 10,029.40 points after closing at 10,234.45 points. The Nifty is trading at 10,205.15 points in the morning.