Mumbai, Sept. 18 -- Sun Pharmaceutical Industries Ltd is up for a third straight session today. The stock is quoting at Rs 1638.8, up 1.15% on the day as on 12:49 IST on the NSE. The benchmark NIFTY is up around 0.19% on the day, quoting at 25378.1. The Sensex is at 82867.93, up 0.21%. Sun Pharmaceutical Industries Ltd has gained around 0.75% in last one month. Meanwhile, Nifty Pharma index of which Sun Pharmaceutical Industries Ltd is a constituent, has gained around 1.43% in last one month and is currently quoting at 22241.35, up 0.63% on the day. The volume in the stock stood at 11.32 lakh shares today, compared to the daily average of 26.7 lakh shares in last one month. The benchmark September futures contract for the stock is quoting...