Mumbai, Dec. 23 -- Power Grid Corporation of India Ltd is up for a third straight session in a row. The stock is quoting at Rs 268.5, up 1.32% on the day as on 12:49 IST on the NSE. The benchmark NIFTY is up around 0.05% on the day, quoting at 26186.55. The Sensex is at 85580.54, up 0.02%. Power Grid Corporation of India Ltd has dropped around 2.65% in last one month. Meanwhile, Nifty Energy index of which Power Grid Corporation of India Ltd is a constituent, has dropped around 0.48% in last one month and is currently quoting at 35025.45, up 0.66% on the day. The volume in the stock stood at 47.09 lakh shares today, compared to the daily average of 114.29 lakh shares in last one month. The benchmark December futures contract for the stock...