The Sensex is now down 180 points at 13,106.Tata Motors has plunged 4.8% to Rs 752. HDFC Bank has dropped 3.7% to Rs 974.Infosys has shed 2.4% to Rs 2,046. ICICI Bank, TCS, Reliance Energy and Maruti have slipped around 2% each to Rs 875, Rs 1,263, Rs 476 and Rs 823, respectively.Wipro and Cipla are down 1.5% each to Rs 592 and Rs 238, respectively.Satyam has advanced 1.7% to Rs 472. ONGC and Tata Steel have added 1% each to Rs 852 and Rs 443, respectively.Out of 2,609 stocks traded so far, 1,680 have declined, 873 have advanced and 56 are unchanged.