Benzinga's Top #PreMarket Gainers By: Benzinga via Benzinga August 27, 2014 at 08:06 AM EDT TubeMogul (NASDAQ: TUBE) jumped 36.23% to $12.56 in pre-market trading after the company reported upbeat Q2 results and issued a strong ... Read More >> Related Stocks: Express Inc Image Sensing Syst The Michaels Comp