Morning Market Movers

Aspen Insurance Holdings

rose 18.67% to $46.72 after Endurance Specialty Holdings

offered to buy Aspen Insurance for $47.50 per share in a cash and stock deal. Goodrich Petroleum

jumped 18.32% to $21.77 after the company announced the completion of its Blades 33H-1 (66.7% WI) well in Tangipahoa Parish, Louisiana. Chindex International

shares gained 17.32% to $22.89 after the company announced the receipt of superior proposal from bidder at $23 per share. Lexicon Pharmaceuticals

shares jumped 15.72% to $1.84 after the company reported that LX4211 has achieved positive results in type 1 diabetes clinical trial WebMD Health

climbed 15.24% to $43.41 after the company lifted its forecast. The company now expects Q1 results above the high end of its earlier outlook. Akebia Therapeutics

climbed 15.07% to $19.40. Credit Suisse initiated coverage on the stock with a Outperform rating and a $25.00 price target. Edwards Lifesciences

rose 12.51% to $82.10 following court ruling preventing Medtronic

from selling CoreValve System in the US. Mast Therapeutics

shares climbed 7.29% to $0.59 after the company reported positive data supporting MST-188 in sickle cell disease. Kandi Technolgies Group

shares gained 7.01% to $13.12 as the company announced its plan to launch the Public EV Sharing System Pilot Project in Shanghai. ZELTIQ Aesthetics

rose 6.24% to $18.04 after the company announced the FDA clearance to treat thighs. JA Solar Holdings Co

shares gained 6.06% to $9.89 after the company reported positive preliminary Q1 results. Syneron Medical

shares surged 5.33% to $11.85 after the company won the FDA clearance for marketing of Ultrashape for fat cell destruction Citigroup

rose 4.20% to $47.60 after the company reported better-than-expected first-quarter results. Boston Scientific

surged 2.92% to $13.06. Bank of America upgraded Boston Scientific from Neutral to Buy and lifted the price target from $15.00 to $16.00. Facebook

jumped 2.41% to $59.94. Facebook filed for regulatory approval for e-money service in Ireland, according to the Financial Times.