Notable Call Options Activity in CBOE Holdings

Shares of CBOE Holdings CBOE are higher on the session by 5.67%, currently trading at $27.97. The stock has been moving largely higher over the past six weeks and is currently trading above the 50-day moving average. Options traders are focusing on calls today. The strike seeing the heaviest volume is the September 2012 $28.00 call, which has traded 1,173 times on open interest of 981 contracts. Large lots are active in every month. Calls are outpacing puts today by 3 to 1. CBOE Holdings, Inc. is engaged in the operation of markets for the execution of transactions in exchange-traded options.