Ciena shares surged nearly 14% Tuesday after Marvell Technology laid out a significantly larger long-term opportunity for optical interconnects, adding fresh support to expectations that artificial-intelligence infrastructure spending will keep driving demand for high-speed networking equipment.
Ciena closed at $443.65, up 13.9%, after trading as high as $446.37 during the session. The move came as investors digested Marvell’s Investor Day projections showing the market for interconnect technology growing at roughly 65% annually to about $65 billion by 2030, alongside an estimated $85 billion opportunity in switching and storage.
Those numbers are Marvell’s estimates for the broader addressable market rather than a forecast for Ciena’s revenue. Still, they reinforce the same underlying trend Ciena has been building its longer-term financial targets around: AI infrastructure is requiring substantially more bandwidth between data centers, within data centers and eventually deeper inside large computing clusters.
The significance for Ciena is that the company does not need Marvell’s forecast to be fully realized for its own growth targets to represent a major change in earnings power. Ciena already expects revenue to compound at approximately 30% annually from fiscal 2026 through fiscal 2029, while targeting an adjusted gross margin of roughly 50%, an adjusted operating margin of 32% to 35% and a free-cash-flow margin near 20%.
Ciena’s Growth Is Already Showing Up in the Numbers
The bullish industry outlook arrives after Ciena delivered one of its strongest quarters in years. Fiscal third-quarter revenue increased 37% from a year earlier to $1.67 billion, while adjusted earnings per share climbed to $2.11 from $0.67. Management raised its fiscal 2026 revenue forecast to approximately $6.42 billion, plus or minus $50 million, which would represent about 35% growth at the midpoint.
For the fiscal fourth quarter, Ciena expects roughly $1.75 billion in revenue, adjusted gross margin of about 45% and adjusted operating margin near 20%. That combination is important because the investment case is increasingly about more than revenue growth: Ciena is attempting to convert stronger networking demand into substantially higher margins as volumes rise and its cost structure gains operating leverage.
AI-related spending has helped expand demand across both traditional wide-area networking and connections surrounding data centers. Ciena’s equipment is used to move enormous amounts of data over fiber networks, making optical infrastructure increasingly important as cloud providers build larger AI clusters and need to connect computing capacity across campuses and geographic regions.
Marvell’s Investor Day provided another industry-level signal that this spending cycle could have considerable room to run. The semiconductor company estimates its broader addressable market will reach about $400 billion by 2030, with interconnect alone accounting for approximately $65 billion. Marvell said increasing bandwidth requirements are expanding optical connectivity across scale-out, scale-up and scale-across architectures used in modern AI infrastructure.
The Opportunity Is Large, but Expectations Are Now Large Too
Ciena’s share-price appreciation has also changed the risk profile for new investors. The stock now trades around $444 after having ranged as low as roughly $147 over the past 52 weeks, meaning a significant amount of enthusiasm surrounding AI networking and Ciena’s future earnings growth has already been reflected in the valuation.
That makes execution increasingly important. Ciena must expand supply quickly enough to meet demand while maintaining the margin improvements embedded in its 2029 targets. Component availability has been one constraint across the optical industry, and rapid growth can create its own problems if supply cannot scale alongside customer orders.
Customer concentration is another factor worth watching. Two customers accounted for a combined 41.7% of Ciena’s fiscal third-quarter revenue, according to the company, leaving quarterly results potentially sensitive to the timing of spending by a relatively small number of major buyers.
The market nevertheless has received increasingly strong evidence that optical networking is becoming a larger part of the AI infrastructure buildout rather than a secondary beneficiary. Marvell has separately said optical interconnect has grown at roughly a 50% compound annual rate in its own data-center business over the past five years and now accounts for about half of that business’s revenue.
For Ciena, the next question is no longer whether AI is creating additional bandwidth demand. Its recent revenue growth already provides evidence that it is. The more consequential issue is whether Ciena can sustain something close to its 30% multiyear growth target while moving gross margin toward 50% and operating margin above 30%.
The company’s fiscal fourth-quarter results will provide the next test. Investors will be watching whether revenue remains near the $1.75 billion target, whether supply constraints continue to ease and whether stronger volumes produce the margin expansion necessary to support the much higher earnings expectations now embedded in Ciena’s stock.