CIEN Q3 Earnings Beat on AI-Led Cloud Demand, Top Line Climbs 37% Y/Y

Ciena Corporation (CIEN) delivered Q3 fiscal 2026 adjusted earnings of $2.11 per share, up 215% year-over-year, and revenue of $1.67 billion, a 37% year-over-year climb. The networking equipment maker credited AI-driven cloud infrastructure buildouts for the surge. Cloud provider revenue jumped 82% year-over-year and now accounts for 53% of total sales, underscoring the structural shift in CIEN's customer base.

The company raised its full-year fiscal 2026 revenue guidance to $6.42 billion and projected at least 30% revenue growth for fiscal 2027. The forward outlook signals management expects sustained demand from hyperscale cloud providers racing to expand data center capacity for AI workloads.

CIEN's results add to evidence that optical networking suppliers are capturing outsized benefit from the AI infrastructure boom, with cloud titans prioritizing high-speed connectivity gear to support large language model training and inference.