Biohaven (BHVN) Stock Plunges on FDA Setback – Will Its Biotech Pipeline Fuel a Comeback?
Biohaven Ltd. shares plunged about 40% on Nov. 5, 2025, after the FDA rejected its lead drug VYGLXIA for spinocerebellar ataxia, citing trial design and data issues. The company will cut R&D spending by 60% and halt non-priority programs. Analysts downgraded the stock, which now trades near $8–9, down over 70% year-over-year. Biohaven reported a $198 million net loss in Q2 with $408 million in cash.