Ciena Corporation shares have fallen 29.1% over the past three months, underperforming the broader market and key peers. The company reported record second-quarter fiscal 2026 revenue of $1.57 billion, up 40% year over year, and raised its full-year revenue guidance to approximately $6.3 billion, plus or minus $100 million. However, ongoing supply constraints, higher operating expenses, and customer concentration remain concerns. Ciena's backlog increased by more than $600 million sequentially to $7.7 billion, and adjusted earnings per share nearly quadrupled to $1.64. The stock currently carries a Zacks Rank #3 (Hold).
