Morning Market Movers

Synthesis Energy Systems

shares jumped 26.01% to $2.18 on the receipt of a 20-year business license for China Clean Coal Gasification joint venture Prothena Corporation plc

rose 24.40% to $46.23 after the company reported clinical data to be presented at International Symposium on Amyloidosis. Morgan Stanley raised the price target on the stock from $35.00 to $53.00. Horizon Pharma

shares gained 24.15% to $18.23 after the company announced its plans to acquire privately held Vidara Therapeutics International for around $660 million. Pacific Sunwear of California

shares jumped 9% to $3.27 after the retailer reported upbeat Q4 results. The company posted an adjusted loss of $0.17 per share, versus analysts' expectations for a loss of $0.19 per share. KB Home

shares gained 8.99% to $19.27 after the company swung to a profit in the fiscal first quarter. KB Home posted a quarterly profit of $10.6 million, or $0.12 per share, versus a year-ago loss of $12.5 million, or $0.16 per share. Exact Sciences

shares jumped 5.96% to $15.28 following the published results of colon cancer screening test. Compugen

climbed 3.54% to $11.86 after Jefferies initiated coverage on the stock with a Buy rating and a $17.00 price target.