Morning Market Movers By: Benzinga via Benzinga October 31, 2014 at 09:55 AM EDT GAIN Capital Holdings (NYSE: GCAP) shares jumped 23.69% to $8.72 after the company announced its plans to acquire City Index for $118 ... Read More >> Related Stocks: Gain Capital Holdings Gopro Inc Cl A Groupon Cl A Sarepta Therapeutics Wisdomtree Investments Inc YRC Worldwide Zendesk Inc