Benzinga's Top #PreMarket Gainers

Cellular Dynamics International, Inc. ICEL gained 107.03% to $16.50 in pre-market trading after the company agreed to be acquired by Fujifilm FUJIF for $ 16.50 per share. Auspex Pharmaceuticals, Inc. ASPX shares surged 41.24% to $100.15 in pre-market trading after Teva Pharmaceutical Industries Limited TEVA announced its plans to acquire Auspex Pharmaceuticals for $101 per share. Catamaran Corporation CTRX shares gained 24.20% to $60.00 in the pre-market trading session following the announcement of acquisition by UnitedHealth Group Incorporated UNH unit. Catamaran agreed to be acquired by UnitedHealth's OptumRx business for $61.50 per share in cash. Horizon Pharma plc HZNP shares climbed 10.91% to $24.19 in pre-market trading after the company announced its plans to buy Hyperion for $1.1 billion in cash. Hyperion Therapeutics, Inc. HPTX shares rose 6.81% to $45.67 in pre-market trading after Horizon Pharma plc HZNP announced its plans to acquire Hyperion Therapeutic for $46.00 per share in cash.