The Sensex has dropped 244 points at 10,169.HDFC Bank has advanced 2.6% to Rs 760. Tata Motors and Satyam have dropped 4% each to Rs 745 and Rs 679, respectively.Larsen & Toubro has shed 3.7% to Rs 2,100. NTPC and Tata Steel have slipped 3.5% each to Rs 111 and Rs 514, respectively.ONGC, Reliance Energy, HDFC and Hindalco are down over 3% each at Rs 1,077, Rs 449, Rs 1,069 and Rs 167, respectively.Out of 2,411 stocks traded so far, 1,899 have declined, 473 have advanced and 39 are unchanged.