The Sensex in the early trade today at the beginning of the week plunged by 155.91 points, or 0.49 percent, to 31,106.15.
The National Stock Exchange's Nifty retreated by 45.35 points, or 0.46 percent, to 9,622.90.
The gauge had gained 48.70 points in the previous session on Friday.
Also Read:
Ample production, meager prices; late rains damage soybean in MP districts
Rupee starts trading low by 6 paise against dollar
Rs. 200 kg of sugar and Rs. 150 kg of salt selling out in valley of Arunachal Pradesh