Silvercorp Metals (NYSEAMERICAN:SVM – Get Rating) was downgraded by Zacks Investment Research from a “buy” rating to a “hold” rating in a research note issued on Friday, Zacks.com reports. According to Zacks, “Silvercorp Metals, Inc. engages in the acquisition, exploration, development, and mining of precious and base metal mineral properties in the Peoples Republic of […]