Notable Put Options in Calpine

Shares of Calpine CPN are higher on the session by 0.15%, currently trading at $13.29. The stock has been moving largely lower over the past two months and is currently trading below the 50-day moving average. Options traders are focusing on puts today. A short while ago the January 2012 $11.00 put traded 1,700 times on open interest of 811 contracts. Calpine Corporation is an independent wholesale power company in the United States. Calpine owns and operates primarily natural gas-fired and geothermal power plants in North America.