Participants traded caution ahead of key macro numbers of Industrial Production (IIP) for December and (CPI) Inflation data to be released later in the day and quarterly earnings IT major TCS.
The BSE Sensex opened higher at 24,862.93 and moved between 24,882.30 and 24,654.97. It was quoting 24,689.71 at 1100 hrs, down 135.33 points or 0.55 per cent.
The 50-share Nifty also dropped by 50.25 points or 0.66 per cent to 7,513.60 at 1100 hours.
Meanwhile, foreign investors sold shares worth Rs 1,319.24 crore yesterday as per provisional data.
In overseas, most Asian markets trading higher as the Chinese yuan stabilised for a third straight day.
While the US stocks eked out small gains yesterday after dipping in and out of negative territory as a deepening rout in oil prices hit the energy sector on the heels of the worst weekly start ever to a new year.