The market has opened in positive terrain. The Sensex is up 57.53 points at 20434.09, and the Nifty is up 9.60 points at 6072.80. About 191 shares have advanced, 59 shares declined, and 14 shares are unchanged. Cipla , Tata Motors , HDFC , Tata Steel and Wipro are big gainers in the Sensex. Among the laggards are L&T, Bajaj Auto , GAIL , ITC and Tata Power .