The opening bell saw the Sensex display a volatile trend. After resuming 19 points higher over its last close at 7,524, the Sensex immediately lost ground and dropped below the 7,500-mark to touch a low of 7,477. While the Sensex is now down 21 points at 7,484, the Nifty is flat at 2,292.ICICI Bank has dropped 1.98% (Rs 10) to Rs 480, while SBI is down a per cent (Rs 4) at Rs 739. HDFC Bank, however, is up 1.10% (Rs 7) at Rs 682. Wipro and Satyam are down a per cent each at Rs 708 (down Rs 5) and Rs 519 (down Rs 3), respectively.Hero Honda has shed 2.50% (Rs 15) to Rs 590. Other auto majors, too, have largely opened on a weak note.BHEL has declined 1.26% (Rs 13) to Rs 983.