Brazil's Vale Gets Vetr Upgrade Despite Political Unrest By: Benzinga via Benzinga May 19, 2017 at 16:06 PM EDT The Vetr crowd upgraded its rating for Vale SA (ADR) (NYSE: VALE) on Friday from 4 stars (Buy), issued four days ago, to 5 stars (Strong ... Read More >> Related Stocks: Vale ADR Representing One Ord Shs