Fresh buying in the market has led the Sensex rally to the day's high, and is now up 454 points at 9383.HDFC Bank has soared nearly 10% to Rs 704. BHEL, HLL and Grasim have surged nearly 9% each at Rs 1,747, Rs 202 and Rs 1,730, respectively.Hero Honda and Infosys have rallied over 7% each to Rs 691 and Rs 2,662, respectively.Out of 2,325 stocks traded so far, 1,420 have advanced, 861 have declined and 44 are unchanged.