Volatility in the opening bell saw the index began on a weak note, but soon bounced back into the green on selective buying support. The Sensex has gained 15 points to 6,549 over its last close, and the Nifty is up two points at 2,045.ITC, after opening in the red, has clocked a per cent gain (Rs 8) to Rs 1,272. While Reliance is up Rs 2 at Rs 536, HLL is down a tad at Rs 142.Infosys is up Rs 5 at Rs 2,147, after opening on a weak note. While Wipro is up a notch at Rs 680, Satyam is up a per cent (Rs 2) at Rs 402.ONGC has added Rs 3 to Rs 813, while Zee is up 1.64% (Rs 2) at Rs 152.SBI has logged a per cent gain (Rs 5) to Rs 665, and HDFC Bank is marginally up at Rs 560. ICICI Bank, however, is down a rupee at Rs 375.Auto, cement and pharma counters, after a subdued opening, are displaying a mixed trend.