A benchmark index of Indian equities markets, the 30-scrip BSE Sensitive Index (Sensex), provisionally closed the day's trade 353.83 points or 1.27 percent down on Wednesday.The wider 50-scrip Nifty of the National Stock Exchange (NSE) also closed day's trade down by 108.55 points or 1.28 percent at 8,353.80 points.The Sensex of the S&P Bombay Stock Exchange (BSE), which opened at 27,880.76 points and closed at 27,512.26 points (provisionally at 3.34 p.m.), down 353.83 points or 1.27 percent from the previous day's close at 27,866.09 points.The Sensex touched a high of 27,883.33 points and a low of 27,479.43 points in the day's trade.