Benzinga's Top #PreMarket Losers By: Benzinga via Benzinga November 11, 2015 at 08:20 AM EST Horizon Pharma PLC (NASDAQ: HZNP) shares declined 20.24 percent to $17.90 in pre-market trading. Horizon Pharma responded to a ... Read More >> Related Stocks: Amtrust Financial Depomed Inc Express Scripts Holding Horizon Therapeutics Macy's Premier Inc Cl A