- Biotech stocks fell Friday, a day after the U.S. Food and Drug Administration made its database of side effects for medicines searchable.
- Sarepta Therapeutics, Ionis Pharmaceuticals, Biogen and Acadia Pharmaceuticals all traded lower after investors found reports on their drugs on the FDA's Adverse Events Reporting System.
- It is not clear whether the adverse events were caused by the medicines themselves, or were incidental, an analyst said.