The Sensex is now up 129 points at 13,559.Reliance Energy (REL) has surged 2.6% to Rs 530. TCS and Satyam have rallied 2.5% each to Rs 1,143 and Rs 452, respectively.Maruti, Dr.Reddy's and Tata Steel have moved up 2.3% each to Rs 891, Rs 740 and Rs 474, respectively.ITC, Wipro, Bharti Airtel and HLL have gained 2% each at Rs 182, Rs 565, Rs 616 and Rs 248, respectively.HDFC has slipped nearly 2% to Rs 1,635.Out of 2,497 stocks traded so far, 1,817 have advanced, 601 have declined and 79 are unchanged.