Horizon Quantum Holdings is trading 5.9% down at $21.00 in after-hours trading, reversing earlier gains as broader technology and AI-related stocks face heavy selling pressure.

  • The stock's pullback follows a sharp 11.1% intraday gain to $23.26 during the regular session.
  • The decline aligns with a global rotation out of high-valuation tech names, with the Nasdaq Composite dropping more than 1%.
  • There is no fresh, company-specific news or earnings release, suggesting the move is primarily a reversal and alignment with the wider tech downturn.