Benzinga's Top #PreMarket Gainers

Prothena Corporation plc PRTA surged 9.53% to $30.00 in the pre-market session after the company and Roche RHHBY entered into a worldwide collaboration to develop and commercialize antibodies for the treatment of Parkinson's disease. Logitech International SA LOGI soared 3.84% to $12.72 in the pre-market trading. Logitech's PEG ratio is 1.33. Facebook FB shares jumped 3.79% to $51.25 in pre-market trading. Facebook will join the S&P 500 Index at the end of next week. Boston Scientific BSX shares gained 3.04% to $11.52 in the pre-market after the company announced favorable FDA advisory panel vote on its Watchman device.