Biogen downgraded to Hold from Buy at Stifel By: TalkMarkets February 21, 2019 at 08:47 AM EST Stifel analyst Paul Matteis downgraded Biogen to Hold from Buy and lowered his price target for the shares to $346 from $397. Read More >> Related Stocks: Biogen Idec Roche Holding AG Basel American Depositary Shares