Benzinga's Top #PreMarket Gainers By: Benzinga via Benzinga April 28, 2015 at 08:21 AM EDT Celladon Corp (NASDAQ: CLDN) shares surged 4.92 percent to $2.77 in pre-market trading after tumbling 80.70 percent on Monday. ... Read More >> Related Stocks: Corning Jd.com Inc ADR Merck & Co YY Inc ADR