The Sensex slipped into the negative zone to touch a low of 12,325, but soon rebounded and is now up nine points at 12,356.Larsen & Toubro has rallied 2.5% to Rs 2,700. ONGC has gained 1.7% at Rs 1,348.Hindalco, Dr.Reddy's, Reliance and Cipla are up over 1% each. Tata Steel has slumped 3% to Rs 636. HLL has dropped 2.6% to Rs 285, and Gujarat Ambuja is down 2.4% at Rs 116.ICICI Bank has declined 2% to Rs 648.Out of 2,539 stocks traded so far, 1,430 have advanced, 1,058 have declined and 51 are unchanged.Debutant Plethico Pharma zoomed to a high of Rs 510 - a premium of 70% to its issue price of Rs 300 in early trades. The stock is now trading at Rs 438, and around 23.86 lakh shares have changed hands at the counter.Another debutant Lokesh Machines zoomed over 100% in early trades to touch a high of Rs 300 as against the issue price of Rs 140. The stock is now at Rs 230 on volume of around 41 lakh shares on the BSE.