CHICAGO, IL--(Marketwire - May 2, 2011) - The Options Industry Council (OIC) announced today that 335,425,947 total options contracts were traded in April, 7.02 percent less than the 360,753,581 contracts traded in April 2010. While April monthly volume was lower in 2011 compared to 2010, last month remains the second highest April on record for volume.