Horizon Quantum Holdings is trading 5.46% higher at $14.48, alongside broader technology-market strength.

  • The provided market context shows the Nasdaq up 1.01%; reporting said technology shares benefited from strong SpaceX and Super Micro results.
  • No clear company-specific announcement explaining the October 21 move surfaced. The Quantum Machines collaboration was reported earlier, on October 18, and coverage did not link it to the gain.
  • Trading volume or activity level was not available.