The Sensex is now up 522 points at 9451.Grasim has soared 9.5% to Rs 1,747. BHEL, Hero Honda and HDFC Bank have zoomed 9% each to Rs 1,750, Rs 701 and Rs 699, respectively.Infosys has rallied 8.7% to Rs 2,699. Tata Steel has surged 7.8% to Rs 415, and HLL has gained 7.6% at Rs 200.Satyam and Larsen & Toubro are up around 7% each at Rs 615 and Rs 1,955, respectively.The market breadth is fairly positive - out of 2,366 stocks traded so far, 1,534 have advanced, 786 have declined and 46 are unchanged.