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Supply constraints could limit fiscal 2027 revenues as backlog is expected to exceed $10 billion.
Shares of Ciena Corporation (CIEN - Free Report) have jumped a whopping 177.9% in the past year, outperforming the Zacks Computer & Technology sector and the Zacks Communication - Components industry, which gained 28.1% and 165.3%, respectively. The S&P 500 composite is up 19.3% over the same time frame.
The company has also outpaced its peers, Corning Incorporated (GLW - Free Report) , Arista Networks, Inc. (ANET - Free Report) and Cisco Systems, Inc. (CSCO - Free Report) . GLW, ANET and CSCO have climbed 95.8%, 36.9% and 70.8%, respectively, in the past year.
Image Source: Zacks Investment Research
Ciena is gaining from AI-driven connectivity demand, optical leadership, expanding data-center connectivity and rising operating leverage.
Let us take a closer look at CIEN’s fundamentals, key growth drivers, competitive strengths and potential risks to determine whether the stock remains an attractive investment.
AI and Data-Center Connectivity Demand
Ciena is benefiting from increasing demand for network connectivity driven by AI and data-center infrastructure investments. In the last earnings call, management stated that AI is driving significant increases in bandwidth requirements and network traffic, making high-speed, low-latency optical connectivity increasingly critical across networks and data centers. This demand spans traditional WAN, AI WAN and data-center connectivity, including data-center interconnects and connections within data centers.
As AI workloads require higher data rates, bandwidth, capacity and density, Ciena is seeing rising demand for its optical and interconnect solutions. Its WaveLogic 5 Nano platform continues to see strong adoption, while 800ZR shipments more than doubled sequentially in the fiscal third quarter. The company also reported strong receptivity to its Nitro active copper cable redriver and received sample orders for Vesta, its open co-packaged optical solution. Direct cloud-provider revenues increased 80% year over year in the fiscal third quarter, while revenues in and around data centers quadrupled year to date.
Strong Optical Technology Portfolio
Ciena is benefiting from its optical technology leadership, supported by focused research and development, deep expertise and proven deployments at scale. The company highlighted strong adoption of its WaveLogic 6 Extreme platform, which remains the only 1.6-terabit high-performance modem on the market, with its ramp exceeding that of the previous WaveLogic 5e generation. Ciena’s RLS portfolio also remains a key growth driver, with roughly 70% market share in disaggregated optical line systems.
In addition, the company’s Hyper-Rail technology, developed with hyperscalers to support AI training across data centers, is expected to see initial standardization by the end of 2026 and material revenue growth through 2027. Ciena also secured a significant hyperscaler win for its WaveLogic 6e coherent technology, with customer commitments extending into 2029 and orders and backlog supporting growth into fiscal 2028.
For fourth-quarter fiscal 2026, Ciena expects revenues of $1.75 billion (+/- $50 million). The company raised fiscal 2026 revenue guidance to $6.42 billion (+/- $50 million), implying 35% year-over-year growth at the midpoint. For fiscal 2027, management’s early view indicates at least 30% revenue growth, an adjusted gross margin of 45-46%, and an adjusted operating margin of 25-27%.
Image Source: Zacks Investment Research
Improving Margins and Operating Leverage
Ciena is also benefiting from improving profitability. Fiscal third-quarter adjusted gross margin reached 46.4%, supported by cost execution, favorable product mix and pricing discipline, while adjusted operating margin increased to a record 22.5%. In the last earnings call, management stated that its gross-margin baseline is now in the mid-40% range and expects its cost structure and portfolio to support further expansion.
For the fourth quarter of fiscal 2027, adjusted gross margin is projected at 45% (+/- 50 bps). Adjusted operating margin is forecast at 20% (+/- 50 bps). Ciena expects fiscal 2027 adjusted operating margin of 25%-27%, with continued growth in its optical systems and plug businesses supporting operating leverage. The company also expects Hyper-Rail economics to be accretive as the technology ramps, while RLS gross margins have improved over the past two to three years and are approaching the corporate average.
Supply Constraints Remain a Hurdle
CIEN is grappling with supply constraints as demand continues to exceed available capacity. In the last earnings call, the company highlighted that its backlog is expected to exceed $10 billion at the end of fiscal 2026, with most of the backlog having customer request dates in 2027. Management noted that fiscal 2027 revenues could be higher if more supply were available and expects the supply-demand imbalance to persist into 2028. Ciena is addressing the constraint by securing long-term agreements for key components through 2029, adding incremental capacity and continuing upstream investments to strengthen its supply base. The company also expects its investments in capacity to weigh on cash from operations in the fiscal fourth quarter as the spending is deployed.
CIEN’s Valuation
CIEN trades at a forward 12-month price-to-earnings (P/E) of 43.93X, above the industry’s 40.13X. CSCO, GLW and ANET trade at a forward 12-month P/E of 26.29X, 41.66X and 48.75X, respectively.
Image Source: Zacks Investment Research
CIEN’s Upward Estimates
The Zacks Consensus Estimate for CIEN’s earnings for fiscal 2026 has been revised upward over the past 30 days.
Image Source: Zacks Investment Research
What Should You Do With CIEN Stock Now?
Ciena’s strong AI-driven demand, expanding data-center connectivity, optical technology leadership and improving profitability support its growth outlook, although supply constraints remain a concern.
Existing investors may stay invested to benefit from the company’s growth prospects, while new investors can consider buying the stock given its strong fundamentals and favorable earnings outlook.
View the Zacks #1 Rank List
Image: Bigstock
Ciena Surges 178% in a Year: Should Investors Buy the Stock Now?
Key Takeaways
Shares of Ciena Corporation (CIEN - Free Report) have jumped a whopping 177.9% in the past year, outperforming the Zacks Computer & Technology sector and the Zacks Communication - Components industry, which gained 28.1% and 165.3%, respectively. The S&P 500 composite is up 19.3% over the same time frame.
The company has also outpaced its peers, Corning Incorporated (GLW - Free Report) , Arista Networks, Inc. (ANET - Free Report) and Cisco Systems, Inc. (CSCO - Free Report) . GLW, ANET and CSCO have climbed 95.8%, 36.9% and 70.8%, respectively, in the past year.
Image Source: Zacks Investment Research
Ciena is gaining from AI-driven connectivity demand, optical leadership, expanding data-center connectivity and rising operating leverage.
Let us take a closer look at CIEN’s fundamentals, key growth drivers, competitive strengths and potential risks to determine whether the stock remains an attractive investment.
AI and Data-Center Connectivity Demand
Ciena is benefiting from increasing demand for network connectivity driven by AI and data-center infrastructure investments. In the last earnings call, management stated that AI is driving significant increases in bandwidth requirements and network traffic, making high-speed, low-latency optical connectivity increasingly critical across networks and data centers. This demand spans traditional WAN, AI WAN and data-center connectivity, including data-center interconnects and connections within data centers.
As AI workloads require higher data rates, bandwidth, capacity and density, Ciena is seeing rising demand for its optical and interconnect solutions. Its WaveLogic 5 Nano platform continues to see strong adoption, while 800ZR shipments more than doubled sequentially in the fiscal third quarter. The company also reported strong receptivity to its Nitro active copper cable redriver and received sample orders for Vesta, its open co-packaged optical solution. Direct cloud-provider revenues increased 80% year over year in the fiscal third quarter, while revenues in and around data centers quadrupled year to date.
Strong Optical Technology Portfolio
Ciena is benefiting from its optical technology leadership, supported by focused research and development, deep expertise and proven deployments at scale. The company highlighted strong adoption of its WaveLogic 6 Extreme platform, which remains the only 1.6-terabit high-performance modem on the market, with its ramp exceeding that of the previous WaveLogic 5e generation. Ciena’s RLS portfolio also remains a key growth driver, with roughly 70% market share in disaggregated optical line systems.
In addition, the company’s Hyper-Rail technology, developed with hyperscalers to support AI training across data centers, is expected to see initial standardization by the end of 2026 and material revenue growth through 2027. Ciena also secured a significant hyperscaler win for its WaveLogic 6e coherent technology, with customer commitments extending into 2029 and orders and backlog supporting growth into fiscal 2028.
For fourth-quarter fiscal 2026, Ciena expects revenues of $1.75 billion (+/- $50 million). The company raised fiscal 2026 revenue guidance to $6.42 billion (+/- $50 million), implying 35% year-over-year growth at the midpoint. For fiscal 2027, management’s early view indicates at least 30% revenue growth, an adjusted gross margin of 45-46%, and an adjusted operating margin of 25-27%.
Image Source: Zacks Investment Research
Improving Margins and Operating Leverage
Ciena is also benefiting from improving profitability. Fiscal third-quarter adjusted gross margin reached 46.4%, supported by cost execution, favorable product mix and pricing discipline, while adjusted operating margin increased to a record 22.5%. In the last earnings call, management stated that its gross-margin baseline is now in the mid-40% range and expects its cost structure and portfolio to support further expansion.
For the fourth quarter of fiscal 2027, adjusted gross margin is projected at 45% (+/- 50 bps). Adjusted operating margin is forecast at 20% (+/- 50 bps). Ciena expects fiscal 2027 adjusted operating margin of 25%-27%, with continued growth in its optical systems and plug businesses supporting operating leverage. The company also expects Hyper-Rail economics to be accretive as the technology ramps, while RLS gross margins have improved over the past two to three years and are approaching the corporate average.
Supply Constraints Remain a Hurdle
CIEN is grappling with supply constraints as demand continues to exceed available capacity. In the last earnings call, the company highlighted that its backlog is expected to exceed $10 billion at the end of fiscal 2026, with most of the backlog having customer request dates in 2027. Management noted that fiscal 2027 revenues could be higher if more supply were available and expects the supply-demand imbalance to persist into 2028. Ciena is addressing the constraint by securing long-term agreements for key components through 2029, adding incremental capacity and continuing upstream investments to strengthen its supply base. The company also expects its investments in capacity to weigh on cash from operations in the fiscal fourth quarter as the spending is deployed.
CIEN’s Valuation
CIEN trades at a forward 12-month price-to-earnings (P/E) of 43.93X, above the industry’s 40.13X. CSCO, GLW and ANET trade at a forward 12-month P/E of 26.29X, 41.66X and 48.75X, respectively.
Image Source: Zacks Investment Research
CIEN’s Upward Estimates
The Zacks Consensus Estimate for CIEN’s earnings for fiscal 2026 has been revised upward over the past 30 days.
Image Source: Zacks Investment Research
What Should You Do With CIEN Stock Now?
Ciena’s strong AI-driven demand, expanding data-center connectivity, optical technology leadership and improving profitability support its growth outlook, although supply constraints remain a concern.
Existing investors may stay invested to benefit from the company’s growth prospects, while new investors can consider buying the stock given its strong fundamentals and favorable earnings outlook.
Currently, Ciena sports a Zacks Rank #1 (Strong Buy). You can see the complete list of today’s Zacks #1 Rank stocks here.