Selling pressure in heayweights, tech, banking, auto and other select old economy stocks has seen the Sensex still exhibiting weak trends. The Sensex is now down 26 points at 6,653, and the Nifty is weak at 2,088 - down 10 points.Reliance has inched lower by 1.37% (Rs 7) to Rs 536. While ONGC is down a per cent (Rs 5) at Rs 819, HPCL is trading lower by 2.38% (Rs 9) at Rs 361.SBI has lost 1.40% (Rs 9) to Rs 657, HDFC Bank has shed 1.34% (Rs 8) to Rs 561.Infosys is down with a marginal loss of Rs 4 at Rs 2,165. While Satyam has dipped 1.83% (Rs 8) to Rs 414, Wipro is down a per cent (Rs 7) at Rs 704.Hero Honda has lost 1.91% (Rs 11) to Rs 553. Bajaj and Tata Motors have slipped a per cent each to Rs 1,070 (down Rs 8) and Rs 503 (down Rs 4), respectively. Maruti is down a rupee at Rs 490.Hindalco has declined 1.32% (Rs 18) to Rs 1,365, while Reliance Energy is down 1.65% (Rs 9) at Rs 565. BHEL is still exhibiting weak trends at Rs 850 - down Rs 10 or 1.20%.Bharti, however, has rolled back into the green to Rs 217 - up Rs 2. While Tata Power has added 2.48% (Rs 10) to Rs 419, HLL is up a notch at Rs 152.