Benzinga's Top #PreMarket Gainers By: Benzinga via Benzinga March 19, 2014 at 08:07 AM EDT Horizon Pharma (NASDAQ: HZNP) surged 20.91% to $17.75 in the pre-market session after the company announced its plans to acquire ... Read More >> Related Stocks: Compugen Ltd Exact Sciences Cor Juniper Networks