Notable Put Options Activity in Thoratec

Shares of Thoratec

are lower on the session by 0.21%, currently trading at $33.31. The stock has been moving largely lower over the past six weeks and is currently testing the 50-day moving average. Options traders are focusing on puts today. The strike seeing the heaviest action is the April 2012 $32.00 put, which has traded 1,000 times on open interest of 443 contracts. Put volume is outpacing call volume by 6 to 1. Thoratec Corporation is engaged in mechanical circulatory support with a product portfolio to treat the range of clinical needs for advanced heart failure patients.