Arqit Quantum is trading 16.76% down now at $16.69 as broad technology and risk-off selling pressured the market on September 14, 2026.

  • No new company-specific announcement was identified for September 14.
  • The latest developments were the September 9 AGM approval and September 1 satellite-security demonstration.
  • Weaker Nasdaq conditions, AI-sector pressure, higher oil prices, and Federal Reserve rate concerns appear to be driving the decline.