Ciena (NYSE:CIEN) reported what management described as a “strong” start to fiscal 2026, delivering record first-quarter revenue and profit while also outlining expanding demand tied to AI-related connectivity needs and service-provider network reinvestment. Executives also emphasized that industry supply constraints are limiting near-term shipments, even as order activity accelerates and backlog rises sharply.
Quarterly results: record revenue and higher profitability
For fiscal first quarter 2026, Ciena reported revenue of $1.43 billion, which CEO Gary Smith said was the company’s highest ever and at the top end of guidance. CFO Marc Graff said revenue was up 33% year-over-year, with optical revenue up over 40%.
Graff added that operating cash flow was $228 million in the quarter. Ciena ended Q1 with $1.4 billion in cash after repurchasing approximately 400,000 shares for $81 million under its current authorization. Inventory turns rose to 3.2x, and Graff said working capital improved, including a “decrease in cash conversions of three days.”
Demand, orders, and backlog: supply remains a constraint
Management repeatedly highlighted unusually strong demand and order intake. Smith called Q1 demand “unprecedented,” while Graff said demand has been robust and “increasing.”
The most prominent data point was backlog. Graff said order intake over the last 90 days drove backlog up by approximately $2 billion in the quarter to exit Q1 at approximately $7 billion, which he described as a new record “by a significant margin.” He added that “nearly all new orders we are taking now will be for fulfillment in fiscal 2027,” and said the company expects backlog to continue growing throughout the year.
Ciena also provided several related details during Q&A:
- Graff said roughly 80% of backlog is products and software, with the remainder services.
- Asked about remaining performance obligations (RPO), Graff said RPO as a percent of orders taken in Q1 should be thought of as “roughly 60%.”
- Graff said Ciena had three customers above 10% of revenue in the quarter: two global cloud providers and one Tier 1 North American service provider.
Even with record revenue, Graff said supply constraints limited what Ciena could ship: “To be blunt, our revenue in the first quarter would have been higher but for these constraints.” He said the company expects demand to outstrip supply for “at least the next several quarters.” Ciena described two main actions to expand capacity: working with contract manufacturers to increase output, and engaging component vendors—where Graff said “more of the industry challenges exist”—including through long-term purchase commitments.
AI and network buildouts: WAN strength and expanding data-center opportunities
Smith framed Ciena’s results around demand for “high-speed optical systems and interconnects” supporting AI workloads. He said the company is “taking meaningful share” of AI-driven connectivity spend, and added that Ciena believes 2025 will stand out as a strong year for market share gains, with 2026 expected to be even stronger.
In its traditional wide area network (WAN) footprint—subsea, long-haul, metro, and data center interconnect (DCI)—Ciena pointed to several demand drivers, including cloud adoption, reinvestment by service providers in optical transport and autonomous networking, and the rise of managed optical fiber networks (MOFN). Smith cited India as an example, saying orders there were up 40% year-over-year, driven by MOFN demand.
During Q&A, management estimated MOFN represents roughly 10% to 15% of Ciena’s service provider business and said it is a “big contributor” to service provider growth. Graff said service provider growth was about 22% year-over-year in Q1.
Beyond the WAN, management described multiple “waves” of opportunity in and around the data center, particularly as AI data centers expand and face power and space constraints. Smith discussed “scale across” deployments that interconnect multiple sites for distributed AI training. He said three hyperscalers have chosen Ciena’s optical solutions for training applications across distance, and said the first hyperscaler referenced previously has added orders for additional clusters.
Ciena said it is addressing this scale-across demand with its RLS platform and 800G ZR pluggable optics. Smith said the quarter marked a second consecutive record for RLS shipments and revenue. Looking ahead, he highlighted a new “RLS hyper-rail” solution designed to increase fiber density; Ciena expects to demo a prototype at OFC and anticipates standardization late in 2026 with a ramp in 2027.
Products, pluggables, and Nubis milestones
Graff said optical growth was led by Waveserver and RLS, with each up over 80% from the year-ago period. In response to questions on pluggables, executive advisor Scott McFeely said pluggable revenue has increased period over period, and reiterated Ciena’s prior aspiration to triple its interconnect business year-over-year, saying the company is “well on track.” He also said Ciena is “first to market” in 800G, contrasting with a less aggressive position in the prior generation.
Smith also described progress from the company’s Nubis acquisition. He noted a new product announcement: the Vesta 200 6.4T optical engine, which he called “the industry’s first high-density, low-power, open ecosystem, pluggable CPO solution.” Ciena expects Vesta samples to be available in calendar Q2 2026. Smith added that samples of the Nitro Linear Redriver technology are also expected in calendar Q2 2026, describing it as important for active copper cabling solutions and claiming it can reduce power by up to 80% versus AEC-type solutions.
On data center out-of-band management (DCOM), Smith said the solution was initially designed with Meta and that Ciena remains engaged with Meta while also in technical discussions with two other major global hyperscalers. In a later Q&A exchange, Smith argued DCOM’s defensibility comes from deep collaboration, vertical integration, software integration, and Ciena’s installation capabilities.
Guidance raised; tariffs seen as immaterial
Graff updated guidance, citing strong demand but also the ongoing supply environment. For fiscal 2026, Ciena now expects revenue of $5.9 billion to $6.3 billion. For Q2 fiscal 2026, the company guided to revenue of $1.5 billion ± $50 million.
On profitability, Graff said Ciena expects fiscal 2026 gross margin of 43.5% to 44.5%, which he said is one point above the December guide and 130 basis points above 2025. He also said the company expects first-half and second-half gross margins to be “roughly equivalent,” despite expected pricing actions later in the year. Q2 adjusted gross margin guidance is 43.5% to 44.5%, with adjusted operating expenses of $375 million to $390 million and adjusted operating margin of 17.5% to 18.5%.
Graff also addressed tariffs. He said the Supreme Court struck down IEPA tariffs implemented in March 2025, which Ciena had previously described as immaterial. He added that a newly announced global replacement tariff has pending final rates, but based on current information Ciena expects an “immaterial effect” and is monitoring developments.
About Ciena (NYSE:CIEN)
Ciena Corporation (NYSE: CIEN) is a global supplier of telecommunications networking equipment, software and services. The company develops high-capacity optical transport systems and packet-optical platforms that enable service providers, cloud operators and large enterprises to build, manage and scale their networks. Ciena’s product portfolio includes coherent optical solutions, packet networking platforms and a suite of network automation software designed to optimize bandwidth, reduce latency and simplify network operations.
In addition to hardware offerings, Ciena provides professional services and support, including network design, implementation and ongoing maintenance.
Read More
- Five stocks we like better than Ciena
- Silver Is the New Oil—And the World’s Running Dry
- BNZI stands out as a Zacks Buy. Earnings momentum and analyst upgrades align
- What happened in Cyprus could be coming here
- Elon Musk’s $1 Quadrillion AI IPO
- Buffett, Gates and Bezos Quietly Dumping Stocks—Here’s Why
