UBS Upgrades Viacom To 'Buy' By: Benzinga via Benzinga April 28, 2015 at 09:15 AM EDT In a report published Tuesday, UBS analysts upgraded the rating on Viacom, Inc. (NASDAQ: VIAB) from Neutral to Buy, while raising the ... Read More >> Related Stocks: Comcast Corp Dish Network Corp Time Warner Cable UBS Group Ag ADR Viacom