Oppenheimer Downgrades GrubHub To Perform Amid 'Competition Concerns' By: Benzinga via Benzinga February 05, 2016 at 09:21 AM EST Shares of GrubHub Inc (NYSE: GRUB) have declined 28.92 percent over the past six months, reaching a low of $18.34 on January ... Read More >> Related Stocks: Amazon.com Bio-Techne Corp Grubhub Ord Shs