Abivax stock slides 9% in U.S. trade as biotech weakens; ECCO 2026 looms
Abivax shares dropped 9.1% to $121.64 in midday U.S. trading Monday, after earlier reaching $133.73. The decline followed sector weakness, with biotech ETFs XBI and IBB down over 2%. Paris-listed Abivax shares closed 9.7% lower. The company is awaiting Phase 3 trial results for its ulcerative colitis drug in 2026.