Mumbai, Oct. 16 -- Persistent Systems Ltd gained for a third straight session today. The stock is quoting at Rs 5790.1, up 1.14% on the day as on 12:49 IST on the NSE. The benchmark NIFTY is up around 0.69% on the day, quoting at 25497.7. The Sensex is at 83201.04, up 0.72%. Persistent Systems Ltd has risen around 4.6% in last one month. Meanwhile, Nifty IT index of which Persistent Systems Ltd is a constituent, has risen around 2.78% in last one month and is currently quoting at 35401.8, up 0.1% on the day. The volume in the stock stood at 6.14 lakh shares today, compared to the daily average of 6.53 lakh shares in last one month. The benchmark October futures contract for the stock is quoting at Rs 5800, up 1.03% on the day. Persistent ...