Arqit Quantum is trading 5.15% up at $19.21, aligned with broader software-sector strength and investor rotation away from AI hardware.
- Extends the September 15, 2026 rebound after a sharp prior-session decline; no fresh company-specific announcement was identified for September 16, 2026.
- The Nasdaq is higher by 0.62%; trading activity is elevated, with volume above its recent average.
- The Federal Reserve decision, strong retail-sales data, and shifting rate expectations remain market-wide catalysts; no direct Arqit-specific trigger is confirmed.