Ciena posts fiscal Q3 profit of $266.4 million and revenue of $1.67 billion

Ciena's fiscal Q3 results beat expectations on both adjusted EPS and revenue, reinforcing near-term fundamentals for networking hardware demand. However, its wide current-quarter revenue range adds uncertainty around order timing and customer spending cadence. Separately, an EPA proposal to reduce mandatory public notice for data-center air permits could accelerate AI data-center buildouts, indirectly supporting optical networking demand, but may raise regulatory and community backlash risks.