Today Sensex stopped at 166341, uo by 200 points, the index touched a high and a low of 16,370.46 and 16,046.48 respectively. While Nifty index shut up at 4898, up by 53 points, the index touched high and low of 4,910.05 and 4,808.75 respectively.

Nifty August 2011 futures closed at 4,914.00, at a premium of 15.20 points over spot closing of 4,898.80, while Nifty September 2011 futures were at 4,919.05 at a premium of 20.25 points over spot closing. The near month August 2011 derivatives contract expires on Thursday, August 25, 2011. Nifty August futures saw addition of 11.53% or 2.55 million (mn) units, taking the total outstanding open interest (OI) to 24.74 mn units.

Among Nifty calls, 4900 SP from the August month expiry was the most active call with decline of 1.08 million or 25.06%. Among Nifty puts, 4800 SP from the August month expiry was the most active put with an addition of 0.48 million or 9.74%.The maximum Call OI outstanding for Calls was at 4900 SP (3.24 mn) and that for Puts was at 5000 SP (5.47 mn).