The Sensex is now down 78 points at 10,198.RCoVL has surged 3% to Rs 256. Ranbaxy has gained nearly 2% at Rs 377, and HDFC Bank has advanced over 1% to Rs 687.HDFC and Larsen & Toubro have dropped over 3% each to Rs 1,085 and Rs 2,127, respectively. BHEL has slipped over 2% to Rs 1,829.