Benzinga's Top Pre-Market Gainers

Star Scientific STSI surged 14.96% to $3.15 in the pre-market session. tar Scientific announced positive preliminary results of the company's ASAP (Anatabloc Supplementation Autoimmune Prevention) Human Thyroid Study. Perion Network PERI added 9.31% to $10.33 in the pre-market session. Perion projects 2013 revenue to exceed $110 million. Monster Beverage MNST soared 3.52% to $50.24 in the pre-market trading. Monster Beverage's PEG ratio is 1.39. Joy Global JOY moved up 2.08% to $68.36 in the pre-market session. Analysts at Piper Jaffray upgraded Joy Global from “neutral” to “overweight.”