What smart money is saying about Ciena Corporation
2 funds in our archive have pitched Ciena Corporation, most recently Munro Global Growth Small & Mid Cap Fund in December 2025.
Ciena Corporation provides network hardware, software, and services that support the transport, routing, switching, aggregation, service delivery, and management of video, data, and voice traffic on communications networks worldwide. The company's Networking Platforms segment offers hardware networking products and solutions that optimized for the convergence of coherent optical transport, optical transport network switching, and packet switching. Its products include 6500 Packet-Optical Platform, 5430 Reconfigurable Switching System, Waveserver stackable interconnect system, and the 6500 Reconfigurable line system, and the 5400 family of Packet-Optical platforms, as well as Z-Series Packet-Optical Platform; 3000 family of service delivery switches and service aggregation switches, and the 5000 family of service aggregation switches, as well as 8700 Packetwave Platform and the Ethernet packet configuration for the 5410 Service Aggregation Switch; and 6500 Packet Transport System. This segment also sells operating system software and enhanced software features embedded in each of its products. The company's Blue Planet Automation Software and Services segment provides multi-domain service orchestration, inventory, route optimization and analysis, network function virtualization orchestration, analytics, and related services. Its Platform Software and Service segment offers OneControl unified management system and platform software services, as well as manage, control, and plan software. The company's Global Services segment provides consulting and network design, installation and deployment, maintenance support, and training services. The company sells its products through direct and indirect sales channels to network operators. Ciena Corporation was founded in 1992 and is headquartered in Hanover, Maryland.
Get an email when a fund buys, sells or pitches it
Fund signal · last 12 months
14 lettersMore funds are selling than buying
Moves described in fund letters in our archive. A sentence published word for word by several funds of one house in the same quarter counts once.
Position history
Between Q4 2024 and Q3 2026, 15 fund letters reported a position in Ciena Corporation, with 2 buys (opened or added) and 7 sells (trimmed or exited).
| Quarter | Letters | Bought | Sold | Theses |
|---|---|---|---|---|
| Q3 2026 | 4 | 2 | 1 | 0 |
| Q2 2026 | 10 | 0 | 6 | 0 |
| Q4 2025 | 0 | 0 | 0 | 2 |
| Q4 2024 | 1 | 0 | 0 | 0 |
Bought and Sold count moves: the same sentence published by several funds of one house in a quarter counts once.
Fund activity · 15 positions · 13 moves
- September 2026
“We also added Ciena and Lumentum, reflecting rising optical connectivity requirements in AI data centers, and Seagate and Vertiv, which stand to benefit from demand for high-capacity storage and increasingly power- and cooling-intensive data center architectures.”
Ciena Corporation - September 2026
“We also initiated SpaceX, Intel and Cerebras, and returned to Ciena and Lasertec.”
Ciena Corporation - September 2026
“Following an exceptional first half we had exited or materially reduced several of our strongest performers in June, SK hynix, Ciena and Applied Materials among them, because share prices had moved ahead of fundamentals,”
Ciena Corporation - September 2026
“Trading activity When the market offers world class franchises back at material discounts to where you sold them weeks earlier, while their earnings power strengthens, sitting still is the greater risk. Three months ago the Fund's activity told the quarter's story better than its contributor tables, and it did so again. In June we had rebuilt Apple from c.1% of the Fund to c.8.7%. This quarter, as Apple rose and the semiconductor complex fell, we reversed the trade, selling almost all of Apple after a strong run, and almost all of Amazon, and putting the proceeds into the companies that had fallen furthest: memory, optics and semiconductors. We rebuilt Kioxia and Arm at discounts of c.55% and c.40% to the prices at which we had sold them in June, doubled our holdings in Micron and SK hynix, and substantially increased Credo, Ibiden, Astera Labs and Elite Material. TSMC, which grew second quarter revenue 34% to $40.2 billion, became the Fund's second largest position after Nvidia. We also initiated SpaceX, Intel and Cerebras, and returned to Ciena and Lasertec.”
Ciena Corporation - June 2026
“Ciena (CIEN) is an optical network equipment maker. We divested our position as the relative strength continued to deteriorate following unfavorable quarterly earnings that showed higher than anticipated operating expenses.”
Ciena Corporation - June 2026
“Trading activity Having bought dislocation in the first quarter, we spent the second selling strength. Five of the quarter’s ten largest contributors were exited outright: SK Hynix, SanDisk, Applied Materials, Credo and Ciena, the last having doubled over the half year.”
Ciena Corporation - June 2026
“Here the dislocation ran the other way: we added through the quarter; at 4.2% Lilly ended the period among the Fund’s largest holdings, having just raised its dividend 15% for 2026, an eleventh consecutive annual increase.”
Ciena Corporation - June 2026
“Alongside the memory and interconnect reductions above, we exited Ciena, Ultra Clean, KLA, Kokusai Electric, Arista Networks, Fabrinet and Vertiv, several having closed the gaps we originally underwrote, and released further capital from Tesla, Shopify, Mercadolibre and Robinhood to concentrate the Fund on the technology stack itself; the ServiceNow exit completed in April.”
Ciena Corporation - June 2026
“Trading activity Having bought dislocation in the first quarter, we spent the second selling strength. Five of the quarter’s ten largest contributors were exited outright: SK Hynix, SanDisk, Applied Materials, Credo and Ciena, the last having doubled over the half year.”
Ciena Corporation - June 2026
Listed in Liontrust GF Global Dividend Fund’s reported holdings.
Ciena Corporation - June 2026
“Alongside the memory and interconnect reductions above, we exited Ciena, Ultra Clean, KLA, Kokusai Electric, Arista Networks, Fabrinet and Vertiv, several having closed the gaps we originally underwrote, and released further capital from Tesla, Shopify, Mercadolibre and Robinhood to concentrate the Fund on the technology stack itself; the ServiceNow exit completed in April.”
Ciena Corporation - June 2026
“The top contributors for the financial year were Comfort Systems (Infrastructure), Ciena and Celestica (Connectivity) and Vertiv (Climate).”
Ciena Corporation - June 2026
“• We exited our position in optical networking equipment company Ciena as shares rose amid optimism around demand for optical equipment in AI data center buildouts.”
Ciena Corporation - June 2026
“• We exited our position in optical networking equipment company Ciena as shares rose amid optimism around demand for optical equipment in AI data center buildouts.”
Ciena Corporation - December 2024
“On an individual holdings’ basis, top contributors to return in Q4 included Ciena and WESCO.”
Ciena Corporation
Also mentioned · 2
These funds discuss Ciena Corporation as a competitor, benchmark or comparable, without disclosing a position in it.
- MentionedProtean FundsSeptember 2026
“The share has come down since, while the fundamentals of Smartoptics' challenger position in the optical networking market have only been strengthened. The market leader, Ciena, is cozying up to the hyperscalers, ignoring orders from mere mortals such as Tier 1 telecom operators.”
Ciena Corporation - MentionedCopeland Capital Management Dividend Growth StrategyJune 2026
“The three stocks mentioned are SanDisk, Bloom Energy, and Ciena Corp.”
Ciena Corporation
Fund coverage · 2 theses
- Munro Global Growth Small & Mid Cap FundDecember 2025
Ciena Corporation is an optical networking leader benefiting from AI-driven scale-across data center demand, strong product leadership with WaveLogic 6, accelerating revenue growth, and large hyperscaler orders.
Read the full thesis - Aristotle Small Mid Cap EquityDecember 2025
Ciena is an optical networking leader poised to benefit from AI-driven bandwidth demand and continued innovation supporting strong results and value creation.
Read the full thesis
Read every full thesis on Ciena Corporation
Read all 2 theses in full, with each fund's reasoning, and get unlimited access to the archive.
View plans→