Horizon Quantum Holdings is trading 5.06% up at $14.22, apparently as broader risk-on sentiment supports technology and AI-linked stocks.

  • No new company-specific announcement was identified on September 21, 2026.
  • Falling oil prices, lower Treasury yields and broadly higher U.S. futures supported market gains at the open; Reuters reported AI optimism and easing oil prices drove Monday’s gains.
  • The September 15 communication clarified outstanding shares and lock-up terms but was not a new September 21 catalyst.