The Sensex is now up 221 points at 15,529.All index stocks are in positive zone.ICICI Bank has surged 2.6% to Rs 907. Tata Steel, NTPC and Ranbaxy have soared around 2% each to Rs 665, Rs 175 and Rs 389, respectively.Satyam and HDFC Bank have rallied almost 2% each to Rs 488 and Rs 1,194, respectively.ACC, Reliance Communications, Tata Motors and TCS are up around 1.5% each at Rs 1,042, Rs 552, Rs 671 and Rs 1,171, respectively.