The Trade Desk issued almost 4.7 million shares at $18 apiece, raising $84 million for its IPO, according to the Wall Street Journal. "During the first day of trading on the Nasdaq on Wednesday, the stock (which trades under the ticker “TTD”) jumped 67% to $30.10," the Journal reported. "Founded in 2009, the Trade Desk provides software designed to help advertisers and their agencies buy ads using automated tools and reams of data. The company’s founder and chief executive, Jeff Green, acknowledged that given the rocky climate for ad tech IPOs over the past several years, the firm and Wall Street had to 'get to know each other' and 'win trust,'" he told the paper. "'I think ad tech has been hurt for a whole bunch of reasons,' he said. 'Every other company that has gone public has been in the business of brokering transactions with both buyers and sellers without loyalty to either one,'" Green said.