The wider 50-scrip Nifty of the National Stock Exchange (NSE) was also trading lower at 7,751.05 points, with a loss of 73.95 points or 0.95 percent.
The 30-share Sensex opened at 25,637.13 points, against the previous close at 25,866.95 points on Wednesday (November 11).
At 9.34 a.m. it was ruling at 25,615.29 points, with a loss of 251.66 points, or 0.97 percent. (IANS)