On Wednesday, Sensex closed down by 1.01 per cent, which is 310.21 points to be at 30,379.81 levels. Nifty also fell by 0.76 per cent which is 68.55 points to 8,925.30 levels. The morning session had witnessed Sensex rising over 700 points along with Nifty, gaining by more than 200 points as global peers were positive.