Calls Purchased on USG Corporation

Shares of USG Corporation USG are higher on the session by 0.30%, currently trading at $13.20. The stock has been moving largely lower over the past four months and is currently trading below the 50-day and 200-day moving averages. Options traders are buying calls on the name today. A short while ago the January 2011 $17.50 call was purchased 1,000 times, on the offer, on open interest of 5,339 contracts. Overall call volume is now running at 2.42x the daily average with 91% of all calls traded being purchases on the offer. 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.