The Sensex opened with a small positive gap of four points at 20,108, and is now down 32 points at 20,073.Bharti has slipped 1.5% to Rs 973. Reliance has declined Rs 8 to Rs 2,825. ITC and RCom are trading with marginal gains at Rs 200 and Rs 765, respectively. SBI is up Rs 10 at Rs 2,404.