Morning Market Movers

Ambit Biosciences (NASDAQ: AMBI) shares jumped 87.56% to $15.38 after Daiichi Sankyo (OTC: DSNKY) announced its plans to acquire Ambit Biosciences for $15 per share in cash through a tender offer. Athlon Energy (NYSE: ATHL) shares gained 24.67% to $58.26 after Encana (NYSE: ECA) announced its plans to buy Athlon Energy for $5.93 billion.Tibco Software (NASDAQ: TIBX) shares jumped 21.12% to $23.63 after the company agreed to be acquired by Vista Equity Partners for $4.3 billion.DreamWorks Animation SKG (NASDAQ: DWA) rose 19.99% to $26.83 on rumor of Softbank (OTC: SFTBY) $32.00 per share bid. Alimera Sciences (NASDAQ: ALIM) shares rose 15.74% to $5.70 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.AMAG Pharmaceuticals (NASDAQ: AMAG) gained 15.62% to $26.80 after the company agreed to acquire Lumara Health for $675 million in a cash and stock deal.Exelixis (NASDAQ: EXEL) shares climbed 10.89% to $1.73 after the company reported positive results from Phase 3 pivotal trial of Cobimetinib in combination with Vemurafenib in patients with BRAF V600 Mutation-positive advanced melanoma.Endocyte (NASDAQ: ECYT) shares rose 7.63% to $7.90 after the company reported that Phase 2b results showed improved survival in Adenocarcinoma NSCLC patients treated with Vintafolide.pSivida (NASDAQ: PSDV) jumped 6.01% to $4.55 after the company confirmed the FDA approval for ILUVIEN.