** MOLYCORP INC, $10.91, up 15.57 percent (1130 ET)
Investors bought back into the embattled rare earth producer, which lost more than 60 percent of its value in 2012.
Jon Hykawy, an analyst at Byron Capital Markets in Toronto, attributed the climb to a "new year reset". "People sold it down at the end of last year, took their tax loss, and now they are saying, 'OK, I liked it last year, I like it now, I'm going to re-buy and reset my price and basically start again,'".
The company is in the final stages of an expansion and modernization at its Mountain Pass mine in California, which is expected to produce significant volumes of rare earth metals, oxides and alloys in 2013.