Benzinga's Top #PreMarket Gainers

Esperion Therapeutics

shares jumped 29.89% to $31.72 in pre-market trading after the company announced positive top-line Phase 2b results for ETC-1002. RealD

shares jumped 20.60% to $11.30 in pre-market trading after Starboard Value offered to acquire the rest of the shares in RealD

for $12 per share. Starboard Value disclosed in a SEC filing that it had taken a 10% stake in RealD. Ariad Pharmaceuticals

shares surged 12.50% to $5.94 in pre-market trading after the company reported that its investigational cancer medicine, AP26113, has received Breakthrough Therapy designation by the FDA for ALK+ non-small cell lung cancer resistant to crizotinib. Tesla Motors

gained 5.26% to $252.87 in pre-market trading. Tesla CEO Elon Musk tweeted a teaser about a mysterious unveiling of what he called the "D" on October 9.