HACK is trading 2.81% down at $127.60, but the specific trigger for its after-hours decline remains unclear.

  • HACK closed at $131.29 on October 28.
  • No clear, verified catalyst was identified; Tenable reported better-than-expected third-quarter results and raised its outlook after the close, news that does not explain HACK’s decline. Cybersecurity stocks had recently attracted buying.
  • The Nasdaq fell 2.14% during the session, but available reporting does not establish broader-market weakness as the cause.