Notable Put Options Activity in A123 Systems

Shares of A123 Systems

are lower on the session by 3.06%, currently trading at $2.22. The stock has been moving largely higher over the past two 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 September 2012 $2 put, which has traded 1,000 times on open interest of 0 contracts. Put volume is outpacing call volume by 9 to 1. A123 Systems, Inc. designs, develops, manufactures and sells rechargeable lithium-ion batteries and battery systems, and provides research and development services to Government agencies and commercial customers.