Arqit Quantum is trading 5.2% down now at $20.41 as the Nasdaq Composite falls 0.61% and the Dow Jones drops 0.85%.

  • No fresh company-specific announcement surfaced for August 20, 2026.
  • Rising Treasury yields and geopolitical tensions are pressuring technology and growth stocks.
  • Earlier disclosures include first-half fiscal 2026 results and July’s nLighten partnership.