The Sensex has extended losses and is now down 160 points at 9,474.
Sterlite and HDFC Bank have plunged 3% each to Rs 267 and Rs 918, respectively.
Reliance Communications and Bharti Airtel have shed nearly 3% each to Rs 177 and Rs 635, respectively.
SBI, Ranbaxy, ONGC and ACC have dropped 2.3% each.
Tata Power and Wipro have slipped 2% each.
ICICI Bank, Reliance, Jaiprakash Associates and ITC are the other major losers.
Tata Motors, however, has advanced nearly 2% to Rs 140.
The market breadth is neutral - out of 1,913 stocks traded so far, 926 have advanced, 907 have declined.
