The Sensex is now down 139 points at 13,510.ICICI Bank has shed 3.7% to Rs 873. Hero Honda has tumbled 3% to Rs 685.ITC has plunged 2.6% to Rs 166, and ONGC has slipped 2.4% to Rs 815.BHEL, Bajaj Auto, Satyam and HLL have dropped around 2% each to Rs 2,210, Rs 2,754, Rs 452 and Rs 186, respectively.HDFC Bank has surged nearly 3% to Rs 979. ACC and Maruti are up 1% each at Rs 956 and Rs 883, respectively.Out of 2,568 stocks traded so far, 1,318 have advanced, 1,185 have declined and 65 are unchanged.