Notable Call Options Activity in Protalix BioTherapeutics

Shares of Protalix BioTherapeutics

are higher on the session by 2.26%, currently trading at $5.57. The stock has been moving largely lower over the past two weeks and is currently trading below the 50-day moving average. Options traders are focusing on calls today. The strike seeing the heaviest volume is the May 2012 $5.00 call, which has traded 1,160 times on open interest of 1,288 contracts. Calls are outpacing puts today by 4 to 1. Protalix BioTherapeutics, Inc. is a biopharmaceutical company focused on the development and commercialization of recombinant therapeutic proteins based on its ProCellEx protein expression system, ProCellEx.