Munger Mode rating: 2 out of 5 — Sell. Our own rating from the research report below, on business quality first: moat durability and management, with price separating the top three.
We spent the better part of our careers avoiding technology hardware, not because we thought it unimportant but because we could rarely see ten years ahead in it. Ciena is the kind of company that tests that discipline. It is the clear leader in coherent optical networking outside China, it has just reported the best quarter in its 34-year history, it holds a backlog larger than any it has ever carried, and it is run by a chief executive who has been at the helm for a quarter century and who steered the company through the worst bust the industry ever saw.
Recent filings analysed: 8-K (2026-09-03), 10-Q (2026-09-03), 8-K (2026-06-11), 8-K (2026-06-08).
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