Broadcast NewsMedia News Nielsen stock upgraded from Hold to Buy By RBR-TVBR - February 4, 2014 0 FacebookTwitterWhatsAppLinkedinEmail Brian Wieser, in 2012 Brian Wieser, Senior Research Analyst at Pivotal Research Group has cited a number of factors for upgrading the stock and is discounting the recent stock market mini-crash. Here’s his story:Please Login to view this content. (Not a member? Join Today!)