The NSE Nifty is up 60 points at 4,076.
Maruti has zoomed nearly 7% to Rs 588.
Reliance Infrastructure, ACC and Jaiprakash Associates have soared around 6% each to Rs 820, Rs 506 and Rs 162, respectively.
Satyam has rallied 4.5% to Rs 483. SBI and Bharti Airtel have surged around 4% each to Rs 1,174 and Rs 744, respectively.
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ICICI Bank, Hindustan Unilever and Tata Steel have advanced 3.7% each to Rs 623, Rs 209 and Rs 662, respectively.
ITC and ONGC have gained 3.3% each at Rs 176 and Rs 905, respectively.
Grasim and DLF are up over 3% each at Rs 1,745 and Rs 427, respectively.
Reliance Communicaitions (RCom) has slipped nearly 2% to Rs 430. Tata Motors has shed 1.5% at Rs 395.
Out of 2,578 stocks traded so far, 1,956 have advanced, 567 have declined and the balance are unchanged.