Qualys is trading at $114.65, down 34.47% in after-hours trading; no credible September 18, 2026 company-specific catalyst was identified.

  • Qualys’s status page reported no incidents on September 18 and listed a routine platform release with no expected downtime.
  • Wedbush’s September 11 downgrade to Neutral was the latest notable analyst action and predates the move.
  • The broader market was positive, and the move may reflect delayed or undisclosed information.