The Sensex is now down 23 points at 11,891.Ranbaxy has surged 1.7% to Rs 422. SBI and Cipla have advanced over 1% each to Rs 946 and Rs 261, respectively.Reliance Communications, Satyam, Reliance Energy, BHEL and Hero Honda are the other prominent gainers.Tata Motors and Maruti have slipped over 1% each to Rs 887 and Rs 894, respectively.ICICI Bank, Wipro, Infosys and HDFC Bank are the other significant losers.