Ranbaxy reported a net loss of Rs 608.8 crore in Q2. While net sales declined by 5.70%, net profit grew by 34.23% and the net profit margin improved to -42.31% compared to -60.66% in the same period of the previous fiscal year. The stock of Ranbaxy Laboratories gained 27.49% closing at Rs 359.40 after opening at Rs 280.85 and touching a high of Rs 377.70.