Vale S.A. (NYSE:VALE – Get Free Report) shares hit a new 52-week high during trading on Monday . Zacks Research upgraded Vale from a “hold” rating to a “strong-buy” rating in a research note on Wednesday, January 7th. Finally, Wall Street Zen cut shares of Vale from a “strong-buy” rating to a “buy” rating in a research note on Saturday, December 27th. CENTRAL TRUST Co bought a new stake in shares of Vale in the second quarter valued at about $34,000. Vale Company Profile(Get Free Report)Vale SA is a Brazilian multinational mining company and one of the world’s largest producers of iron ore and iron ore pellets.