Good buying was observed in the IT sector, while huge selling pressure was seen in metal, auto and banking. The 30-scrip Sensitive Index (Sensex) of the S&P Bombay Stock Exchange (BSE), which opened at 26,429.30 points, was trading at 26,390.58 points (at 09.18 a.m.) in the early session, down 77.78 points or 0.29 percent from the previous day's close at 26,468.36 points.