Yelp (NASDAQ:YELP) was upgraded by investment analysts at Piper Jaffray from a “neutral” rating to an “overweight” rating in a note issued to investors on Thursday. A number of other analysts have also recently weighed in on YELP. Analysts at Oppenheimer raised their price target on shares of Yelp from $78.00 to $80.00 in a research note on Thursday. They now have an “outperform” rating … Continue reading Stock Upgrades: Yelp Inc (NYSE:YELP), Glu Mobile (NASDAQ:GLUU), Fortune Brands Home & Security (NYSE:FBHS), Wright Medical Group (NASDAQ:WMGI)