Benzinga's Top #PreMarket Gainers

Ambit Biosciences AMBI shares climbed 89.02% to $15.50 in pre-market trading after Daiichi Sankyo DSNKY announced its plans to acquire Ambit Biosciences for $15 per share in cash through a tender offer. DreamWorks Animation SKG DWA shares surged 25.22% to $28.00 in pre-market trading on rumor of Softbank SFTBY $32.00 per share bid. Athlon Energy ATHL shares jumped 24.44% to $58.15 in pre-market trading after Encana ECA announced its plans to buy Athlon Energy for $5.93 billion. Tibco Software TIBX shares surged 20.91% to $23.59 in pre-market trading after the company agreed to be acquired by Vista Equity Partners for $4.3 billion. Alimera Sciences ALIM jumped 17.97% to $5.81 in pre-market trading after the company confirmed the FDA approval for ILUVIEN. The company expected to begin selling ILUVIEN in the US during the first quarter of 2015.