The Sensex slipped 105.72 points to 27790.25 in the Noon Today and the Nifty declined 21.55 points to 8376.45. About 1122 shares have advanced, 1481 shares declined, and 151 shares are unchanged on the BSE. Where as HDFC, ITC, ICICI Bank, L&T, Bharti, GAIL, Vedanta and BHEL fell 1-2 percent.