- Company name
- Ciena
- Sector
- Optical networking systems
- About
- Ciena Corporation designs, makes and sells optical networking systems, routing and switching products, software and services that move data over fiber for telecom operators, cloud and data center companies and governments. Revenue was $1.67 billion in the fiscal third quarter of 2026, which ended August 1, 2026. Optical networking was 71.3% of it, routing and switching 9.8%, platform software and services 5.9%, Blue Planet automation software 1.4% and global services 11.6%. Two customers each made more than 10% of revenue, 41.7% together. Ciena's fiscal year ends around October 31. Gary Smith is President and Chief Executive Officer, and Marc Graff is Chief Financial Officer. The pick is the common stock on the NYSE (CIEN), in US dollars.
- Thesis
- The market prices Ciena as a network supplier that depends on a few cloud customers that are building AI data center networks and on scarce parts that limit how fast it can ship. Revenue rose 37% to $1.67 billion in the fiscal third quarter of 2026, and adjusted earnings per share rose to $2.11 from $0.67. Orders have been above revenue, so backlog is historically high, and Ciena raised its fiscal 2026 revenue guidance to $6.42 billion plus or minus $50 million. Two customers made 41.7% of revenue. For the price to hold, supply must grow fast enough to turn orders into revenue, the adjusted operating margin must reach the 20% that Ciena expects for Q4 from 10.7% a year earlier, and the cloud customers must keep ordering. The Q4 report and the fiscal 2027 plan in December 2026 are the next test. If revenue and margin keep rising, the gap can close within about two years.
- Risks
- Customer concentration. Two customers made 41.7% of revenue in the fiscal third quarter of 2026. A cut in orders from one of them would hit revenue and profit.
Supply limits. Orders exceed revenue and the industry has a supply shortage. Ciena signs multi-year supply agreements with firm purchase commitments and prepayments, so late parts delay revenue and a drop in demand would leave it with commitments.
Inventory. Inventories were $872.0 million at August 1, 2026, and inventory turns were 3.5. Excess or old parts would need write-downs.
Debt. Long-term debt was $3,229.8 million at August 1, 2026, against $1,524.2 million at November 1, 2025. The 0.00% convertible notes do not pay interest, but they can dilute shareholders.
- Balance sheet
- At August 1, 2026, Ciena had cash and cash equivalents of $2,445.7 million, short-term investments of $184.3 million and long-term investments of $213.6 million. Long-term debt, net, was $3,229.8 million, against $1,524.2 million at November 1, 2025, with no current portion. It includes the $2.88 billion of 0.00% convertible senior notes due 2031 issued on June 11, 2026. Accounts receivable were $1,233.6 million and inventories were $872.0 million. Total stockholders' equity was $3,056.7 million. There were 141,808,525 shares outstanding at August 28, 2026. All amounts are in US dollars.
As of Aug 1, 2026.
- Checkpoints
- Dec 10, 2026 (estimate): Q4 fiscal 2026 results and fiscal 2027 plan. Pending. Watch: Q4 revenue of $1.70 billion or more and an adjusted operating margin of 19.5% or more passes; lower results fail.
Mar 2027 (estimate): Q1 fiscal 2027 results: revenue. Pending. Watch: Quarterly revenue of $1.75 billion or more passes; less fails.
- Recent events
- Sep 3, 2026: Ciena reported fiscal Q3 2026 results. Revenue was $1.67 billion, up 37%, adjusted gross margin was 46.4% and adjusted operating margin was 22.5%. GAAP net income per diluted share was $1.83 and adjusted net income per diluted share was $2.11. Ciena bought about 0.4 million shares for $171.7 million.
Sep 3, 2026: Ciena gave an outlook for Q4: revenue of $1.75 billion plus or minus $50 million, an adjusted gross margin of 45% plus or minus 50 basis points and an adjusted operating margin of 20% plus or minus 50 basis points. It raised its fiscal 2026 revenue outlook to $6.42 billion plus or minus $50 million.
Jun 11, 2026: Ciena closed an offering of $2.88 billion of 0.00% convertible senior notes due 2031, including $375.0 million from the buyers' option, and repaid its 2030 term loan in full.