December’s heating up for Owens Corning (NYSE: OC). The building materials firm caught an RBC Capital upgrade from Outperform to Top Pick on Monday, and Argus came out equally positive on the stock Wednesday. The Rating Analyst Michael Jaffe initiated coverage of Owens Corning with a Buy rating and a $109 price target. Read moreThe upside potential loses it's force. $OC, Owens Corning Inc / D