Notable Call Options Activity in USG

Shares of USG USG are higher on the session by 3.83%, currently trading at $8.15. The stock has been moving largely lower over the past three months and is currently trading below the 50-day average. Options traders are focusing on calls today. A short while ago the September 2011 $8.00 call traded 2,200 times on open interest of 358 contracts. USG Corporation, through its subsidiaries, is a manufacturer and distributor of building materials. USG produces a range of products for use in new residential, new nonresidential, and residential and nonresidential repair and remodel construction, as well as products used in certain industrial processes.