Calls Purchased on Sigma-Aldrich Corporation

Shares of Sigma-Aldrich Corporation SIAL are higher on the session by 0.01%, currently trading at $69.91. The stock has been moving largely higher over the past three months and is currently trading above the 50-day and 200-day moving averages. Options traders are buying calls on the name today. A short while ago the June 2011 $75.00 call was purchased 1,000 times, on the offer, for $0.25 on open interest of 181 contracts. Overall call volume is now running at 4.42x the daily average with 84% of all calls traded being purchases on the offer. Sigma-Aldrich Corporation is a life science and high technology company. The company develops, manufactures, purchases and distributes a range of chemicals, biochemicals and equipment.