Stocks discussed on the Lightning Round segment of Jim Cramer's Mad Money Program, Thursday, December 22.
Southwestern Energy (NYSE:SWN): Cramer likes the stock, as he is a believer in natural gas.
bluebird bio (NASDAQ:BLUE): It's a good spec.
Ashland (NYSE:ASH): He thinks Ashland is a shareholder-friendly company.
Gilead Sciences (NASDAQ:GILD): The company has no growth left, and hence, it needs to acquire. Don't buy the stock now.
CoreCivic (NYSE:CXW): "Private jails have moved up too much. We are going to stay away, but I do say that this one is a little cheaper than some of the others we have profiled."