Mumbai, Jan. 8 -- Kotak Mahindra Bank Ltd dropped for a fifth straight session today. The stock is quoting at Rs 2128.9, down 0.7% on the day as on 13:19 IST on the NSE. The benchmark NIFTY is down around 0.86% on the day, quoting at 25915.25. The Sensex is at 84313.4, down 0.76%.Kotak Mahindra Bank Ltd has gained around 0.06% in last one month.Meanwhile, Nifty Bank index of which Kotak Mahindra Bank Ltd is a constituent, has increased around 0.8% in last one month and is currently quoting at 59990.85, down 0.49% on the day. The volume in the stock stood at 12.14 lakh shares today, compared to the daily average of 24.47 lakh shares in last one month. The benchmark January futures contract for the stock is quoting at Rs 2135.9, down 0.65% ...