The Sensex is now down 147 points at 10,531.ONGC has plunged 4% to Rs 1,064. HLL has dropped 3.5% to Rs 234.Reliance Energy (REL), Reliance Communications and Dr.Reddy's have slipped over 3% each to Rs 432, Rs 261 and Rs 1,265, respectively.Bajaj Auto and Wipro are down 2.5% each at Rs 2,574 and Rs 478, respectively.TCS has advanced 1.5% to Rs 1,903.Out of 2,223 stocks traded so far, 1,293 have declined, 862 have advanced and the rest unchanged.