Today is an another red day for Stock Market, BSE Index closed at 17847, down by 165 points,The index touched a high and a low of 17,976.36 and 17,786.13 respectively. While Nifty index shut up at 5349, down by 46 points, the index touched high and low of 5,389.10 and 5,328.70, respectively.

Nifty May 2011 futures closed at 5,348.00, at a discount of 0.95 points over spot closing of 5,348.95, while Nifty June 2011 futures were at 5,342.05 at a discount of 6.90 points over spot closing. The near month May 2011 derivatives contract expires on Thursday, May 26, 2011.Nifty May futures saw addition of 19.06% or 3.96 million (mn) units, taking the total outstanding open interest (OI) to 24.75 mn units.

For Nifty calls, 5400 strike price (SP) from the May series was the most active call with a contraction of 0.79 million or 12.01%. Among Nifty puts, 5300 SP from the May month expiry was the most active put with a contraction of 0.70 million or 8.78%. The maximum Call OI outstanding was at 5400 SP (7.34 mn) and that for Puts at 5300 SP (8.71mn).