) are lower on the session by 0.81%, currently trading at $37.47. The stock has been moving largely lower over the past four months and is currently trading below the 200-day moving average. Options traders are buying calls on the name today. A short while ago the August 2011 $37.00 call was purchased 1,600 times, on the offer, on open interest of 38 contracts. Overall call volume is now running at 3.33x the daily average with 89% of all calls traded being purchases on the offer. Vulcan Materials Company is a producer of construction aggregates, primarily crushed stone, sand, and gravel. Vulcan has 319 aggregates facilities. The company is also a producer of asphalt mix and ready-mixed concrete, as well as a producer of cement in Florida.