The Sensex is now down 73 points at 10,750.Earlier in the day, the index opened a tad higher at 10,831 and spurted to a high of 10,898. Selling soon emerged and the index tumbled into the negative zone to a low of 10,623 - down 275 points from the day's high.Hindalco and Cipla have advanced 3% each to Rs 197 and Rs 234, respectively.Tata Steel has gained 1.8% at Rs 519. ACC has spurted 1% to Rs 759.HDFC has dropped 4% to Rs 1,190. ONGC and HDFC Bank have shed 2.6% each to Rs 1,205 and Rs 766, respectively.Bajaj Auto, Bharti Tele, Reliance Energy, Wipro, Tata Power and Reliance have declined over 2% each.The market breadth is fairly positive - out of 1,788 stocks traded so far, 1,024 have advanced, 738 have declined and the rest are unchanged.