Ciena Quarterly Results: Revenue Up 40% on AI Connectivity Demand

The news: Ciena reported quarterly results for its fiscal second quarter, ended May 2, 2026, on June 4, 2026. Revenue climbed 40% from a year earlier to $1.57 billion, and adjusted earnings per share reached $1.64, up 290%.

By the numbers:

• Revenue: $1.57 billion, up 40% year over year
• GAAP EPS: $1.49, compared with $0.06 a year earlier
• Adjusted EPS: $1.64
• GAAP operating margin: 15.1%; adjusted operating margin: 19.5%
• Optical Networking revenue: $1,099.8 million, or 70.0% of the total
• Share repurchases: about 0.2 million shares for $83.1 million under a $1 billion program

Why it matters: Ciena’s optical gear carries traffic between data centers, which puts the company close to the infrastructure build-out tied to artificial intelligence workloads. Chief executive Gary Smith linked the company’s strategy to multi-year, AI-driven connectivity opportunities. The scale of the earnings increase, with GAAP EPS rising from $0.06 to $1.49, shows how much operating leverage the business has when revenue rises this quickly. The gap between GAAP and adjusted operating margin, 15.1% versus 19.5%, reflects items the company excludes from its adjusted figures, which are reconciled in the release. Even on the GAAP basis, however, the improvement from a year earlier was large, which suggests the gain was driven by volume rather than by accounting adjustments.

The big picture: Optical Networking remains the core of the business at 70% of revenue. The other segments were Global Services at $179.4 million, Routing and Switching at $174.2 million, Platform Software and Services at $93.9 million and Blue Planet Automation at $23.4 million. Because the mix is concentrated, Ciena’s results are closely tied to spending by large network operators and cloud providers. That concentration cuts both ways. It amplifies results when large customers expand capacity, as they did in this quarter, but it also leaves the company more exposed if those customers slow or pause orders. The smaller software and automation lines remain a modest share of the total.

What’s next: The company guided to fiscal third-quarter revenue of $1.625 billion, plus or minus $50 million, with an adjusted operating margin of 19% to 20%. For the full fiscal year, Ciena expects revenue of $6.3 billion, plus or minus $100 million, which it said represents 32% growth at the midpoint, with adjusted gross margin of 44.5% to 45%. The next earnings report will show whether the third quarter meets that range and whether margins hold as volumes grow.