The Sensex opened with a positive gap of 119 points at 13,621, but soon slipped into red. The index is now down 101 points 13,418.
Infosys has soared 5% to Rs 1,642. Satyam has surged over 3% to Rs 367, and Wipro has rallied nearly 2% to Rs 399.
ONGC has gained 3% at Rs 981. Tata Motors has advanced 1.7% to Rs 405.
Jaiprakash Associates, HDFC Bank and Larsen & Toubro are up around 1% each.
Ranbaxy has slumped 7.7% at Rs 375. ICICI Bank has plunged 5.8% to Rs 557.
Grasim has shed 3.5% at Rs 1,860. Sterlite and SBI have tumbled over 3% each to Rs 462 and Rs 1,535, respectively.
Bharti Airtel has dropped 2.8% to Rs 753. ITC has slipped 2% to Rs 191, and NTPC has declined over 1% to Rs 169.