Biogen Boosts Biotech ETFs to More New Highs

Shares of Biogen Idec (NasdaqGS: BIIB), one of the largest U.S. biotechnology companies, are up 7% Friday and earlier hit an all-time high after the company said an early-stage study revealed its Alzheimer’s drug, aducanumab, stemmed cognitive decline in patients compared with those taking a...