Sometimes you can do everything right and still get punished. That's the story for Ciena (CIEN) today, as the networking equipment maker's stock plunged nearly 17% despite beating earnings estimates and raising its outlook for the year. The culprit? Expectations that had simply run too hot.
Ciena's shares had surged more than 530% over the past 12 months, fueled by the AI data center buildout frenzy. When a stock has that kind of run, even a strong quarter can feel like a letdown if there isn't something extra to keep the momentum going. And that's exactly what happened Thursday.
The numbers themselves were impressive. Fiscal second-quarter revenue hit $1.57 billion, up from $1.13 billion a year ago and ahead of the $1.51 billion analysts were looking for. Adjusted earnings came in at $1.64 per share, more than quadruple the $0.42 from a year earlier and well above the $1.46 consensus estimate. Profitability also improved sharply, with adjusted gross margin expanding to 44.9% from 41.0% and adjusted operating margin jumping to 19.5% from 8.2%, thanks to engineering cost cuts, a better product mix, and pricing optimization.
But the market wanted more, and the selloff erased billions in market value. Still, even after the drop, Ciena shares are up more than 530% over the past year — a reminder that context matters.
The AI Tailwind Is Real
CEO Gary Smith made it clear that the AI-driven demand story is not just hype. Cloud providers and telecom customers are spending more on high-capacity, low-latency infrastructure to support AI training, data ingestion, and inference workloads. Smith said Ciena now expects its addressable market to nearly double to about $50 billion by 2029.
The company also secured what Smith called the industry's first multirail deployment order from a major hyperscaler for its RLS HyperRail platform. And discussions are ongoing with additional hyperscalers, neoscalers, and service providers. That's a big deal because multirail architectures are critical for connecting thousands of GPUs in AI clusters.
Ciena's data center out-of-band management platform, DCOM, is also gaining traction. Routing and switching revenue surged 88% year-over-year, driven by DCOM. Smith said the company received initial DCOM orders from a second hyperscaler and is advancing lab qualifications with a third. The company also won a large hyperscaler contract for high-performance coherent optical modules and continues to see strong demand for 400G and 800G pluggable technologies.
"Our long-term strategy to be the global leader in high-speed connectivity — both across the WAN and in and around the data center — is tightly aligned to the structural, multi-year opportunities created by AI-driven demand, positioning us to capitalize on market dynamics and drive sustained, profitable growth," Smith said.
Backlog Gives Visibility Into 2027
CFO Marc Graff provided some concrete evidence that the demand is real: backlog increased by more than $600 million from the prior quarter to $7.7 billion, giving the company visibility into fiscal 2027 demand. Ciena is also investing in manufacturing capacity and supply-chain resilience to support future growth.
For the fiscal third quarter, Ciena expects revenue of $1.575 billion to $1.675 billion, compared with analyst estimates of $1.554 billion. The company forecasts adjusted gross margin of 45%, plus or minus 50 basis points, and adjusted operating margin between 19% and 20%.
Ciena also raised its fiscal 2026 revenue outlook to a range of $6.2 billion to $6.4 billion, up from its previous forecast of $5.9 billion to $6.3 billion. Analysts currently expect revenue of $6.18 billion. The company maintained its adjusted gross margin outlook of 44.5% to 45% and expects adjusted operating margin of 19%, plus or minus 50 basis points.
So the business is firing on all cylinders. The question is whether the stock's valuation had simply gotten ahead of itself. At $527.77, Ciena still trades at a premium, but the company's positioning in the AI infrastructure buildout suggests the growth story has legs. For investors willing to look past the day's noise, the long-term thesis remains intact.
