Good buying was seen in capital goods, banking index (bankex) and auto sectors while selling pressure was seen in the metals sector. The 30-scrip sensitive index (Sensex) of the S&P Bombay Stock Exchange (BSE), which opened at 20,094.21 points, was trading at 20,020.32 points in the pre-noon session, up 125.22 points or 0.63 percent from previous day's close at 19,895.10 points.