Notable Put Options Activity in CARBO Ceramics

Shares of CARBO Ceramics

are lower on the session by 1.50%, currently trading at $157.74. The stock has been moving largely higher over the past three weeks and is currently trading above the 50-day moving average. Options traders are focusing on puts today. A short while ago the October 2011 $145.00 put traded 1,000 times on open interest of 218 contracts. Put volume is dominating call volume 17 to 1. CARBO Ceramics Inc. is a supplier of ceramic proppant. The company is a provider of software, and consulting services, spill prevention, containment and geotechnical monitoring.