Benzinga's Volume Movers

Global Blood Therapeutics Inc GBT surged 19.7 percent to $21.25. The volume of Global Blood Therapeutics shares traded was 739 percent higher than normal. Global Blood Therapeutics reached an agreement with the FDA regarding the design of its pivotal trial for GBT440 in adults and adolescents with sickle cell disease. The company announced in an SEC filing that the company's Chief Medical Officer, Eleanor Ramos, will retire, effective today.
Rambus Inc. RMBS shares moved up 4.5 percent to $12.53. The volume of Rambus traded was 452 percent higher than normal. Rambus posted better-than-expected quarterly results.
Silicon Laboratories SLAB shares gained 3.9 percent to $61.50. The volume of Silicon Laboratories shares traded was 345 percent higher than normal. Silicon Laboratories shares gain following a takeover chatter in Silicon Laboratories from DealReporter.
Baker Hughes Incorporated BHI shares rose 5.5 percent to $54.99. The volume of Baker Hughes shares traded was 285 percent higher than normal. Baker Hughes reported a narrower-than-expected quarterly loss.