The Sensex has rebounded into the positive zone and is now up 20 points at 17,547.The NSE Nifty is down 11 points at 5,122.DLF has plunged over 4% to Rs 810. Bajaj Auto has tumbled nearly 3% to Rs 2,214.Mahindra & Mahindra has dropped 2.5% to Rs 642, and Larsen & Toubro has shed 2.2% at Rs 3,550.Tata Steel has slipped 1.8% to Rs 758. HDFC and Reliance Energy have declined 1.6% each to Rs 2,880 and Rs 1,955, respectively.ICICI Bank and Hindalco have shed 1.4% each at Rs 1,090 and Rs 161, respectively. ACC is down 1% at Rs 765.Infosys has surged 4.4% to Rs 1,546, and Satyam has rallied 3.7% to Rs 405. TCS has advanced over 3% to Rs 911, and Wipro has added 1% to Rs 414.Ranbaxy has gained 1.3% at Rs 379. ITC has moved up over 1% to Rs 194.