Vertex Pharmaceuticals Stock Falls 4.6% After FDA Label Warning Hits Alyftrek, Trikafta
Vertex Pharmaceuticals shares fell 4.6% to $433.07 Friday after updated U.S. safety warnings on its cystic fibrosis drugs Alyftrek and Trikafta cited reports of serious neuropsychiatric events. The new labels advise close monitoring for symptoms such as depression and suicidal thoughts. Vertex expects 2026 revenue to remain heavily dependent on cystic fibrosis treatments, despite ongoing efforts to expand its pipeline.