Ciena · customer concentration
Ciena’s biggest customers
Who are Ciena’s biggest customers?
Customer group: 58% of FY2024 revenue
stale FY2024 is the latest fiscal year with a 10% customer fact in the SEC data; the latest fiscal year with reported revenue is FY2025, for which no 10% customer is in the data yet.
group Combined share of several customers as stated in the filing, not one customer.
Numbers, method and sources
Share of revenue per customer as tagged in the filing’s XBRL (ConcentrationRiskPercentage, benchmark revenue). US GAAP requires disclosure only for customers with at least 10% of revenue; a year without a customer means below 10% or not disclosed. Labels like “Customer A” are the filer’s own; the same label is not guaranteed to be the same customer every year.
FY2025
No customer ≥ 10% of revenue disclosed.
FY2024
- Ten Largest Customers (group) 58%
FY2023
- Ten Largest Customers (group) 54%
FY2022
- Ten Largest Customers (group) 56%
FY2021
- Ten Largest Customers (group) 56%
FY2020
- Ten Largest Customers (group) 55%
period ended Nov 2, 2019 (interim)
- Ten Largest Customers (group) 59%
“Revenue Concentration Sales to our five largest customers contributed 49.7% of our revenue in fiscal 2025 and 43.8% of our revenue in fiscal 2024.”
SEC filings only. No market data.
All Ciena facts from SEC filings · Customer concentration of all companies