Horizon Quantum Holdings is trading $16.45, down 6.00%, with no identifiable company-specific announcement on September 3, 2026.

  • The decline follows a 19.95% jump to $17.50 on September 2, with profit-taking and volatility after the prior session’s trading pause.
  • MarketWatch reported only 71 shares in premarket activity, indicating limited early liquidity.
  • Major U.S. indices and software stocks rose while Horizon Quantum Holdings fell; no new qualifying SEC filing or press release was found September 3, 2026.