Morning Market Movers

KiOR KIOR rose 33.51% to $0.765 on news in pact with KFT Trust on $25 million Note Purchase. IsoRay ISR shares jumped 19.55% to $2.63. The rise in the shares may be attributed to Cesium 131 presentation announcement. Balchem BCPC gained 11.90% to $58.32 after the company announced its plans to aquire SensoryEffects for $567 million. Intuitive Surgical ISRG shares climbed 11.57% to $488.68 after the company announced the FDA clearance and U.S. introduction of the new da Vinci Xi Surgical System. MGT Capital Investments MGT shares surged 9.34% to $2.00 after the company announced its plans to acquire the DraftDay fantasy sport business and software platform. Rubicon Technology RBCN shares climbed 9.21% to $12.33 after JP Morgan upgraded the stock from Neutral to Overweight and lifted the target price from $12 to $14. Durata Therapeutics DRTX surged 8.79% to $14.65 after the FDA Advisory Committee unanimously recommended the approval of Durata's Dalvance. Melco Crown Entertainment MPEL climbed 7.48% to $41.54 following announcement that Macau gaming revenue has surged 13.1% for the month of March. TetraLogic Pharmaceuticals TLOG gained 6.90% to $6.82 after the company announced the publication of preclinical characterization of Birinapant. Stereotaxis STXS gained 6.35% to $4.52 after the company submitted 510(k) application to the FDA for Vdrivewith V-Loop System. Verint Systems VRNT shares gained 5.58% to $49.55 after the company reported better-than-expected fourth-quarter results and issued a strong full-year forecast. Verint reported its adjusted earnings of $0.91 per share on revenue of $257.1 million. JA Solar Holdings Co JASO rose 4.03% to $10.58 after gaining 0.99% on Monday. Las Vegas Sands LVS rose 3.69% to $83.76 following announcement that Macau gaming revenue has surged 13.1% for the month of March. NVIDIA NVDA rose 2.62% to $18.38 after JMP Securities upgraded the stock from Market Perform to Outperform. Clean Energy Fuels CLNE climbed 2.35% to $9.15 after the company opened America's Natural Gas Highway stations in Texas and Oklahoma. Medivation MDVN shares rose 1.49% to $65.33 after the company named Rick Bierly as its new Chief Financial Officer.