Calls Purchased on Thoratec

Shares of Thoratec THOR are higher on the session by 1.10%, currently trading at $36.63. The stock has been moving largely higher over the past five months and is currently trading above the 50-day moving average. Options traders are buying calls on the name today. A short while ago the August 2011 $40.00 call traded 1,500 times on open interest of 1,132 contracts. Overall call volume is now running at 6.27x the daily average with 100% of all calls traded being purchases on the offer. Thoratec Corporation is a manufacture of mechanical circulatory support with a product portfolio to treat a range of clinical needs for advanced heart failure patients.