Stocks making the biggest moves premarket: Versant, Biogen, Bullish, Cisco and more

Check out the companies making the biggest moves in premarket trading: Biogen — Shares advanced 4% after the biopharmaceutical company announced its experimental Alzheimer's drug will advance into a phase 3 trial, despite failing to meet the main goal of the phase 2 trial. Biogen said the drug showed cognitive benefits. …