Lumentum Holdings Inc.
Close on Nov 2, 2026Market cap $61.39BP/E –Yield –
Lumentum Customer Concentration: Largest Customer Share of Net by Year
Customer Concentration: Largest Customer (Customer A) Share of Net Revenue (%) (%)
Lumentum Customer Concentration: Largest Customer Share of Net: 26.6% in FY2026, up 11.2 pts from a year earlier.
Where the FY2026 figure comes from
Source: SEC Form 10-K (filed 2026-08-17) ↗
Customers accounting for ≥10% of consolidated net revenue or gross accounts receivable.
Annual history
Hover a value to see the sentence it was read from; calculated values show their formula
| Period | Ended | Customer Concentration: Largest Customer (Customer A) Share of Net Revenue (%) (%) | Year on year | Source |
|---|---|---|---|---|
| FY2026 | Jun 30, 2026 | 26.6% | +11.2 pts | SEC Form 10-K (filed 2026-08-17) ↗ |
| FY2025 | Jun 30, 2025 | 15.4% | -3.5 pts | SEC Form 10-K (filed 2026-08-17) ↗ |
| FY2024 | Jun 30, 2024 | 18.9% | +3.6 pts | SEC Form 10-K (filed 2026-08-17) ↗ |
| FY2023 | Jun 30, 2023 | 15.3% | -13.4 pts | SEC Form 10-K (filed 2025-08-19) ↗ |
| FY2022 | Jun 30, 2022 | 28.7% | -1.5 pts | SEC Form 10-K (filed 2023-08-23) ↗ |
| FY2021 | Jun 30, 2021 | 30.2% | +4.2 pts | SEC Form 10-K (filed 2023-08-23) ↗ |
| FY2020 | Jun 30, 2020 | 26.0% | +5.0 pts | SEC Form 10-K (filed 2022-08-24) ↗ |
| FY2019 | Jun 30, 2019 | 21.0% | -9.0 pts | SEC Form 10-K (filed 2021-08-31) ↗ |
| FY2018 | Jun 30, 2018 | 30.0% | – | SEC Form 10-K (filed 2020-08-25) ↗ |
Breakdown
What makes up customer Concentration: Largest Customer Share of Net
Cite this data
StockData. (2026). Lumentum Customer Concentration: Largest Customer Share of Net (%), annual FY2018–FY2026 [Data set]. Compiled from Lumentum SEC filings and investor materials. https://stockdatahq.com/stocks/lite/kpis/cust-rev-pct-a
See every metric in the Lumentum KPI table. Data updated Nov 2, 2026.