Ciena is trading at $399.75 (-10.21%) as fading U.S.-Iran peace prospects lifted oil prices and pushed bond yields toward multi-year highs, pressuring growth-oriented technology valuations.
- No fresh company-specific announcement was identified for August 18, 2026.
- The Nasdaq Composite was down 1.42%, while technology-sector weakness reinforced the decline.
- This is primarily a global risk-off decline.