Vetr Upgrades Yahoo After Hack Fallout By: Benzinga via Benzinga December 16, 2016 at 14:36 PM EST The Vetr crowd on Friday upgraded their rating for Yahoo! Inc. (NASDAQ: YHOO) from 4 stars (Buy), which was issued 10 days ago, to ... Read More >> Related Stocks: Bio-Techne Corp Verizon Communications Yahoo