Aytu BioScience is trading 8.4% up at $2.16 in after-hours trading, with no reliable company-specific announcement, earnings release, filing, or late-breaking news explaining the gain.

  • It closed at $1.99 on September 11, 2026.
  • The S&P 500 rose 0.89% and the Dow 1.01%, but the regular-session decline and isolated after-hours jump make a global catalyst uncertain.