FOLD PDUFA decision: a negative outcome, -7.9%

On September 28, 2023, Amicus Therapeutics, Inc. reached its PDUFA decision. The result was a negative outcome, and the stock moved -7.9% in the window around the event. It had already run -7.4% in the 30 days into the catalyst — the kind of pre-event run-up that often precedes binary readouts.