Benzinga's Top #PreMarket Gainers

Prothena Corporation plc (NASDAQ: PRTA ) surged 9.53% to $30.00 in the pre-market session after the company and Roche (OTC: RHHBY ) entered into a worldwide collaboration to develop and commercialize antibodies for the treatment of Parkinson's disease. Logitech International SA (NASDAQ: LOGI ) soared 3.84% to $12.72