The Sensex has slipped back into the negative zone and is now down 20 points at 19,818.ONGC has zoomed 6% to Rs 1,322, and Larsen & Toubro has soared 5.5% to Rs 4,481.Reliance Communications has surged 3.7% to Rs 801. ICICI Bank has rallied over 3% to Rs 1,296.BHEL has moved up 2.4% to Rs 2,675. Ranbaxy has advanced over 2% to Rs 436.Infosys has gained 1.7% at Rs 1,871. Mahindra & Mahindra, HDFC Bank and SBI are up 1.3% each at Rs 765, Rs 1,675 and Rs 2,095, respectively.Hindustan Unilever has plunged over 6% to Rs 195. Bharti Airtel and Maruti have slumped over 5.5% each to Rs 949 and Rs 1,014, respectively.ITC has shed nearly 4% to Rs 172. Reliance Energy and NTPC have slipped around 3% each to Rs 1,808 and Rs 232, respectively.ACC, HDFC and Reliance have dropped 2.7% each to Rs 1,048, Rs 2,698 and Rs 2,710, respectively.