The Sensex has rebounded into the positive zone and is now up 35 at 10,652.BHEL has surged 3.5% to Rs 1,924. ONGC and HDFC have advanced 2.5% each to Rs 1,166 and Rs 1,160, respectively.Grasim and Maruti have rallied nearly 2% each to Rs 2,064 and Rs 778, respectively. Dr.Reddy's and Bharti are up 1.5% each at Rs 1,344 and Rs 389, respectively.Reliance Communications has slipped nearly 3% to Rs 250. ITC has dropped 2.5% to Rs 164.Gujarat Ambuja, SBI and Tata Steel have shed nearly 2% each to Rs 103, Rs 740 and Rs 488, respectively.