🔴 ACADIA Pharmaceuticals is trading 22.08% down in after-hours trading with no clear company-specific catalyst identified

ACADIA Pharmaceuticals is trading 22.08% down at $21.27 after-hours on September 18, 2026, with no clear company-specific announcement, earnings release, or regulatory catalyst identified.

• The regular-session close was $27.29.
• The latest surfaced lawsuit-settlement report concerns preliminary court approval granted August 24, not a new September 18 event.
• Broader markets were generally positive, leaving the move unexplained.