Photo Credit: WLS-AM News (Tracey Cooke)

GrubHub Inc. CEO Matthew Maloney, trailed by costume characters, walks the New York Stock Exchange trading floor before his company's IPO begins trading, Friday, April 4, 2014. Investors sent shares of the online food ordering service up 51 percent to $39.20 in early trading in its stock market debut Friday. (AP Photo/Richard Drew)