Selling pressure was observed in the banking index (bankex), oil and gas and capital goods sectors, while some good buying was seen in the healthcare sector. The 30-scrip sensitive index (Sensex) of the S&P Bombay Stock Exchange (BSE), which opened at 19,880.94 points, was trading at 19,707.27 points in the pre-noon session, down 208.68 points or 1.05 percent from previous day's close at 19,915.95 points.