Benzinga's Top #PreMarket Gainers

Abengoa SA

shares gained 23.09% to $11.25 in the pre-market trading session after dropping 39.27% on Friday. Baker Hughes

shares surged 15.95% to $69.44 in pre-market trading after Halliburton

announced its plans to buy Baker Hughes for $34.6 billion in cash and stock. Amicus Therapeutics

shares rose 15.64% to $6.58 in pre-market trading after the company reported positive Phase 3 Data on cardiac and composite endpoints from Fabry Monotherapy Study. Celldex Therapeutics

shares jumped 12.99% to $16.00 in pre-market trading. On Friday, the company reported an interim update from the Phase 2 ReACT study of rindopepimut in EGFRvIII-positive glioblastoma (GBM).