Fresh buying in Reliance, banking, tech and other old economy stocks has spurred the gains of the index. The Sensex is currently above the 6,400 mark at 6,405 - up 38 points. The Nifty has upped its gains by 16 points to 2,014.Reliance, on fresh buying support, has advanced 2.86% (Rs 15) to Rs 541. While ITC is up with a small gain of Rs 3 at Rs 1,280, HLL is trading on a flat note at Rs 142.ONGC has jumped 2.17% (Rs 17) to Rs 801.SBI has added 1.55% (Rs 9) to Rs 614. While HDFC Bank has inched up by 1.15% (Rs 6) to Rs 491, ICICI Bank is up a per cent (Rs 4) at Rs 358.Satyam has gained nearly 2% (Rs 7) to Rs 386, and Wipro is up a per cent (Rs 7) at Rs 696. Infosys has minimised its losses, and is down a per cent (Rs 16) at Rs 2,027.Bajaj has moved up a per cent (Rs 10) to Rs 1,081. While Maruti also is up a per cent (Rs 3) at Rs 440, Hero Honda and Tata Motors are marginally down at Rs 574 and Rs 493, respectively.L&T has flared up 3% (Rs 29) to Rs 968, while Tisco is up nearly 2% (Rs 6) at Rs 361.Bharti, however, is still reeling under selling pressure, and has shed 4.19% (Rs 9) to Rs 202. Reliance Energy is trading lower by 2% (Rs 11) at Rs 534.