The Sensex is now up 472 points at 18,715.The NSE Nifty has gained 161 points at 5,478.All Sensex stocks are in positive zone with gains in excess of 1% each.ONGC has soared 6.6% to Rs 1,113, and Reliance Communications has surged 6.2% to Rs 650.Cipla and Wipro have rallied around 4.5% each to Rs 205 and Rs 457, respectively. SBI has gained 4% at Rs 2,272.Grasim and DLF have moved up 3.7% each to Rs 3,120 and Rs 843, respectively.BHEL and Ambuja Cements have added 3.3% each to Rs 2,135 and Rs 123, respectively.Reliance, NTPC and Tata Motors have advanced around 3% each to Rs 2,621, Rs 212 and Rs 777, respectively.TCS, Satyam and Mahindra & Mahindra have moved up 2.7% each to Rs 955, Rs 432 and Rs 692, respectively.Tata Steel and Bharti Airtel are around 2.5% each at Rs 796 and Rs 930, respectively.