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CIEN

Ciena
NetworkingAI exposure: Significant

Optical transport that connects data centers to each other.

Next earnings: Ciena has not announced its next earnings date. Its last earnings release was filed with the SEC on September 3, 2026 (Form 8-K, item 2.02); companies on this list usually announce the next date two to three weeks ahead. Last earnings release on EDGAR

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01What does it supply?

Products, customers, and where it sits in the AI stack.

What the company does

Optical networking equipment and software for telecom carriers and cloud providers.

Its role in AI

Supplies the long-haul and data-center-interconnect optics that link AI sites across regions.

Company profile by TradingView

02How much does AI matter to its business?

Significant. A large and growing share of revenue or spending is AI-related.

Why CIEN is rated significant

Significant. Cloud providers were 53% of revenue in the quarter ended August 1, 2026, up 82% year over year, and pluggable optics for data-center interconnect more than doubled. Telecom carriers are still the other half of the business, but the growth and the guidance (fiscal 2027 revenue up at least 30%) are coming from the AI build-out.

Reported figures come from the company's own filings and releases. Estimates are third-party or editorial and are kept separate. The exposure label is an editorial judgment.

Reported by the company

Estimates

No third-party or editorial estimates are listed for CIEN. Only company-reported figures are shown at present.

Key financial metrics, by reporting period

Company-reported, via TradingView
Financials by TradingView

03What should visitors watch next?

Earnings, product launches, customer spending, and the risks that matter.

Next earnings
No announced date on file. Check the investor relations page.
Last earnings release: 2026-09-03 (8-K)

Watch list

  • Fiscal Q4 2026 revenue versus guidance of $1.75 billion plus or minus $50 million, with adjusted gross margin 45.0% plus or minus 50 bps source
  • Whether backlog exits fiscal 2026 above $10 billion and fiscal 2027 revenue guidance of at least 30% growth ($8.3-$8.4 billion) is confirmed source
  • Continued ramp of WaveLogic 6 800ZR pluggables and the hyperscaler direct performance optics module order/second multi-rail win source

Growth drivers

  • CEO Gary Smith: 'AI continues to drive compounding waves of network investment,' with AI driving significant increases in bandwidth connectivity demand and network traffic growth source
  • Direct cloud provider revenue grew over 80%, and the company is projecting to exit fiscal 2026 with over $10 billion in backlog source
  • 10-K: AI workloads and cloud services driving data center interconnect scaling, WaveLogic coherent modem technology and interconnect pluggables for AI infrastructure source

Risks

  • Revenue is concentrated among a small number of customers (five largest ~50% of fiscal 2025 revenue; one cloud provider ~18%), and reductions in their spending could materially hurt results source
  • Dependence on third-party suppliers and limited sources of supply, with electro-optical and semiconductor components constrained by AI/cloud demand, causing extended lead times and higher costs source
  • Tariffs and other import measures imposed by the U.S. or other countries could adversely affect the business given manufacturing in Canada, Mexico, China, Thailand and Vietnam source

The company's own risk factors: 10-K filed 2025-12-12, Item 1A.

Recent developments: SEC filings

Source: SEC EDGAR · refreshed every 15 min

Insider trades

Form 4, last 6 filings
InsiderTransactionSharesAvg priceFiled
Gage Brodie
EVP & Chief Product & Tech
Open-market sale · disposed1,200$344.082026-10-19
DiPerna Dino
EVP & Chief R&D Officer
Open-market sale · disposed890$347.042026-10-19
Rothenstein David M
EVP & Chief Strategy Officer
Open-market sale · disposed2,500$348.062026-10-19
SMITH GARY B
Director, President & CEO
Open-market sale · disposed2,952$348.022026-10-19
SMITH GARY B
Director, President & CEO
Open-market sale · disposed2,952$369.662026-10-13
Graff Marc D.
EVP & Chief Financial Officer
Open-market sale · disposed97$355.192026-10-06

News

News by TradingView

CIEN in plain answers

The questions readers ask about Ciena, answered from the company's own filings and this site's research. Each answer names its source.

What does Ciena (CIEN) supply to AI?+

Optical networking equipment and software for telecom carriers and cloud providers. Supplies the long-haul and data-center-interconnect optics that link AI sites across regions.

How much does AI matter to Ciena's business?+

AI exposure is rated significant on this site: A large and growing share of revenue or spending is AI-related. Reported by the company: Cloud provider revenue was 53% of total revenue, up 82% year-over-year; total revenue $1.67 billion, up 37% YoY from $1.22 billion. Optical Networking revenue $1,191.3 million (71.3% of revenue); Routing and Switching $164.4 million (9.8%); two customers each over 10% of revenue totaled 41.7% of revenue.

Company filing or release
When is Ciena's next earnings date?+

Ciena has not announced its next earnings date. Its last earnings release was filed with the SEC on September 3, 2026 (Form 8-K, item 2.02); companies on this list usually announce the next date two to three weeks ahead.

Last earnings release on EDGAR
Are Ciena insiders buying or selling CIEN stock?+

In the latest Form 4 filings for CIEN there are 6 open-market sales; the most recent was filed on October 19, 2026 by SMITH GARY B. Every transaction links to the filing on SEC EDGAR below.

Most recent Form 4
What should investors watch for CIEN?+

Fiscal Q4 2026 revenue versus guidance of $1.75 billion plus or minus $50 million, with adjusted gross margin 45.0% plus or minus 50 bps Whether backlog exits fiscal 2026 above $10 billion and fiscal 2027 revenue guidance of at least 30% growth ($8.3-$8.4 billion) is confirmed Continued ramp of WaveLogic 6 800ZR pluggables and the hyperscaler direct performance optics module order/second multi-rail win

Source
What are the main risks for Ciena?+

Revenue is concentrated among a small number of customers (five largest ~50% of fiscal 2025 revenue; one cloud provider ~18%), and reductions in their spending could materially hurt results Dependence on third-party suppliers and limited sources of supply, with electro-optical and semiconductor components constrained by AI/cloud demand, causing extended lead times and higher costs Tariffs and other import measures imposed by the U.S. or other countries could adversely affect the business given manufacturing in Canada, Mexico, China, Thailand and Vietnam

10-K filed 2025-12-12, Item 1A
Which AI category is CIEN in?+

Ciena is listed under Networking. Optical transport that connects data centers to each other.

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Original sources

Research note — Fiscal year ends around Nov 1; Q3 FY2026 (ended Aug 1, 2026) reported Sept 3, 2026. No fiscal Q4 reporting-date announcement found on investor.ciena.com as of 2026-09-17. Backlog and cloud-share figures come from the company's earnings presentation and call transcript hosted on its IR CDN, not the press release. Exposure re-rated from partial to significant on 2026-09-18 on the reported figures above.