The Sensex opened with a positive gap of three points at 6,513. It is now down 19 points at 6,492.Reliance has slipped Rs 3 to Rs 564. ONGC is down Rs 4 to Rs 857. SBI has dropped Rs 7 to Rs 659. ITC and HLL are marginally higher in early deals.Infosys has declined Rs 21 to Rs 2,170. Satyam and Wipro have also opened on a weak note.Dr. Reddy's is up Rs 2 at Rs 774, and Ranbaxy is up Rs 5 at Rs 1,077. Grasim is down Rs 15 at Rs 1,198.Bajaj has declined 2% (Rs 20) to Rs 1,018. Maruti and Tata Motors are also trading with losses.