Benzinga's Top #PreMarket Gainers

Santarus (NASDAQ: SNTS ) surged 37.38% to $31.90 in the pre-market session. Santarus and Pharming announced new data from open-label repeat treatment study with RUCONEST. Piper Jaffray downgraded Santarus from Overweight to Neutral. Universal Display (NASDAQ: OLED ) shares jumped 16.64% to $34 in pre-market trading after the company