Benzinga's Top Pre-Market Gainers

Celgene CELGZ moved up 100.84% to $6.25 in the pre-market session. Celgene's pancreatic cancer drug Abraxene improved overall survival rates in a phase III study. Titanium Metals TIE surged 42.61% to $16.50 in the pre-market session. Precision Castparts PCP announced its plans to acquire Titanium Metals for around $2.9 billion. Jefferies Group JEF added 20.51% to $17.16 in the pre-market session. Leucadia National LUK announced its plans to acquire Jefferies Group. Gilead Sciences GILD soared 9.77% to $71.36 in the pre-market trading. Gilead Sciences announced positive results in mid-stage hepatitis C virus (HCV) infection study.