Calls Purchased on Align Technology (ALGN)

Shares of Align Technology

are lower on the session by 0.35%, currently trading at $19.93. The stock has been moving largely higher over the past six 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 April 2011 $22.50 call was purchased 1,000 times, on the offer, on open interest of 1,393 contracts. Overall call volume is now running at 2.54x the daily average with 91% of all calls traded being purchases on the offer. Align Technology, Inc. designs, manufactures, and markets the Invisalign system, a method for treating malocclusion, or the misalignment of teeth. Invisalign corrects malocclusion using a series of clear, nearly invisible, removable appliances that gently move teeth to a desired final position.