Ciena is trading at $323.11, down 10.58%, amid a sector-wide pullback in optical-communications and AI-infrastructure stocks.
- No fresh company-specific announcement was identified; coverage attributed the decline to sector pressure.
- Investors questioned the payoff from heavy AI spending, while rising oil and geopolitical tensions weighed on risk sentiment.
- Technology shares and major indexes were also lower, reinforcing the sector-led move.