The Sensex has pared gains and is now up 75 points at 12,960.Bharti Aritel and TCS have surged 2.8% each to Rs 771 and Rs 1,245, respectively. HDFC and Wipro have gained 2.3% each at Rs 1,603 and Rs 578, respectively.Satyam, ONGC, Larsen & Toubro, Cipla and HLL have advanced around 2% each to Rs 448, Rs 797, Rs 1,512, Rs 234 and Rs 187, respectively.Gujarat Ambuja has slumped nearly 4% to Rs 106. ITC and ACC have dropped over 3% each to Rs 149 and Rs 757, respectively.Grasim has shed 2% to Rs 2,030. HDFC Bank has declined 1.7% to Rs 964.Reliance Energy and Reliance Communications are down 1% each at Rs 476 and Rs 419, respectively.Out of 2,515 stocks traded so far, 1,572 have advanced, 882 have declined and 61 are unchanged.