Benzinga's Top Pre-Market Gainers

The Men's Wearhouse

surged 32.09% to $46.55 in the pre-market session after Jos. A. Bank Clothiers

offered to acquire Men's Wearhouse for around $2.3 billion. Jos. A Bank Clothiers

shares gained 14.04% to $47.51 in the pre-market session on merger talk. VIVUS

soared 3.46% to $10.48 in the pre-market trading after the company announced new data demonstrating the positive effects from its Qsymia drug on the progression to type 2 diabetes. Alcoa

shares jumped 3.27% to $8.20 in pre-market trading after the company reported better-than-expected third-quarter results.