Benzinga's Top #PreMarket Gainers

gained 107.03% to $16.50 in pre-market trading after the company agreed to be acquired by Fujifilm

for $ 16.50 per share.

shares surged 41.24% to $100.15 in pre-market trading after

announced its plans to acquire Auspex Pharmaceuticals for $101 per share.

shares gained 24.20% to $60.00 in the pre-market trading session following the announcement of acquisition by UnitedHealth Group Incorporated

unit. Catamaran agreed to be acquired by UnitedHealth's OptumRx business for $61.50 per share in cash.

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.

shares rose 6.81% to $45.67 in pre-market trading after Horizon Pharma plc

announced its plans to acquire Hyperion Therapeutic for $46.00 per share in cash.