Biogen: Significant Drop Follows ‘Significant Slowing’

Shares of Biogen Idec (BIIB) are tumbling after the biotech giant reported earnings that fell shy of analyst forecasts. Bernstein’s Geoffrey Porges and team explain what happened: Associated Press This morning, Biogen Idec announced soft Q1 results that are consistent with both the seasonal challenges we identified in our pre-quarter note and with significant slowing [...]