The Sensex is now up 41 points 13,693.Cairn India listed at Rs 148 as against the issue price of Rs 160 - a discount of 7.5%. The stock has dropped further down and is now at Rs 131, around 10 lakh shares have changed hands at the counter on BSE so far.Gujarat Ambuja, Infosys and Ranbaxy are the prominent gainers.HDFC has slipped over 1% to Rs 1,575.