Nifty February 2012 futures closed at 5,388.50 at a premium of 20.35 points over spot closing of 5,368.15, while Nifty March 2012 futures were at 5,415.95 at a premium of 47.80 points over spot closing. The near month February 2012 derivatives contract expires on Thursday, February 23, 2012. Nifty February futures saw an addition of 0.39 million (mn) units taking the total outstanding open interest (OI) to 25.65 mn units.