The Sensex has slipped back into negative zone and is now down 13 points at 9857. Dr.Reddy's is steady with a gain of 3.2% at Rs 1,107.Tata Power has surged 2.5% to Rs 470.Reliance has moved up 2.3% to Rs 715.ACC and HDFC are up 2.3% each at Rs 578 and Rs 1,326, respectively.Wipro has added 2% to Rs 516.Ranbaxy, HDFC Bank, Grasim and Bharti have spurted over 1% each.SBI has slipped 3% to Rs 887.Tata Steel, Larsen & Toubro, Infosys, Gujarat Ambuja, Maruti, ONGC, Hero Honda an ICICI Bank have declined over 1% each. Out of 2,530 stocks traded so far, 1,729 have slipped, 750 have advanced and the rest are unchanged.Piramyd Retail, Bombay Rayon and Amar Remedies have soared over 10% each. Gillette has rallied 6% to Rs 895. Dabur, Lupin, SCI, India Cement, Aurobindo Pharma, Geometric Software, Gail and CESC have also gained significantly.Monsanto India has slumped 10% to Rs 1,911. Excel Industries, Lloyd Steel, Praj, FDC, Suzlon, HCL Infosys, Alok Industries, FACT, IDBI and Bharat Electricals are in declining mode.