Today Sensex closed at 18507, The index touched a high and a low of 18,622.56 and 18,469.53 respectively. While Nifty shut up at 5567, The index touched high and low of 5,596.60 and 5,550.95 respectively.

Nifty July 2011 futures closed at 5,569.40, at a premium of 2.35 point over spot closing of 5,567.05, while Nifty August 2011 futures were at 5,588.00 at a premium of 20.95 points over spot closing. The near month July 2011 derivatives contract expires on Thursday, 28 July, 2011. Nifty July futures saw an addition of 7.94% or 1.72 million (mn) units, taking the total outstanding open interest (OI) to 23.41 mn units.

Among Nifty puts, 5600 SP from the July month expiry was the most active put with addition of 0.47 million. The maximum Call OI outstanding for Calls was at 5600 SP (8.08 mn) and that for Puts was at 5500 SP (6.87 mn). The respective Support and Resistance levels are: Resistance 5592.11-- Pivot Point 5571.53-- Support 5546.46.