The Sensex has recovered most of its losses and is now down marginally at 9,618 - down 29 points.
Tata Steel and Reliance Infrastructure have slumped over 4% each to Rs 189 and Rs 539, respectively.
Ranbaxy has plunged nearly 4% to Rs 224. Grasim has shed 2.6% at Rs 1,380.
Tata Motors and TCS have dropped over 2% each to Rs 136 and Rs 513, respectively.
ONGC, Larsen & Toubro and Sun Pharma have slipped over 1.7% each.
Maruti and Jaiprakash Associates have surged 2.7% each to Rs 625 and Rs 77, respectively.
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HDFC and Reliance Communications are up 1% each at Rs 1,523 and Rs 173, respectively.
The market breadth is marginally negative - out of 2,353 stocks traded so far, 1,159 have declined, 1,098 have advanced and 96 are unchanged.