The Sensex is now down 51 points at 13,235.Tata Motors has shed 3% to Rs 766. HDFC Bank has dropped 2.7% to Rs 984.Larsen & Toubro and HDFC have slipped 1.4% each to Rs 1,609 and Rs 1,572, respectively.Satyam has advanced 1.4% to Rs 471. ACC and Tata Steel are up around 1% each at Rs 752 and Rs 443, respectively.Out of 2,263 stocks traded so far, 1,234 have declined, 958 have advanced and 71 are unchanged.