KLA Corp (KLAC) operating KPIs
KLACNasdaqOptical Instruments & LensesFiscal year ends June 30
Financials through Q1 FY2027, quarter ended Sep 30, 2026Last filing: 10-Q on Oct 29, 2026Score 16/3021% above fair value
$157.91−9.52 (-5.69%)
Close on Oct 30, 2026Market cap $206.32BP/E 39.5Yield 0.51%
KLA largest single customer concentration (TSMC) — share of annual revenue (%) (%)
In FY26, one customer (TSMC) accounted for ~22% of total revenues (vs. 25% in FY25 and 12% in FY24).
Latest, FY2026
19.0%
Period ended Jun 30, 2026
Change on a year earlier
0.0 pts
19.0% in FY2025
History
6 years
Since FY2021
Sources
4
Documents cited below
Annual history
Hover a value to see the sentence it was read from; calculated values show their formula
| Period | Ended | Largest single customer concentration (TSMC) — share of annual revenue (%) (%) | Year on year | Source |
|---|---|---|---|---|
| FY2026 | Jun 30, 2026 | 19.0% | 0.0 pts | KLA Form 10-K (period 2026-06-30, filed 2026-08-06) ↗ |
| FY2025 | Jun 30, 2025 | 19.0% | +6.0 pts | KLA Form 10-K (period 2026-06-30, filed 2026-08-06) ↗ |
| FY2024 | Jun 30, 2024 | 13.0% | -5.0 pts | KLA Form 10-K (period 2026-06-30, filed 2026-08-06) ↗ |
| FY2023 | Jun 30, 2023 | 18.0% | -2.0 pts | KLA Form 10-K (period 2025-06-30, filed 2025-08-08) ↗ |
| FY2022 | Jun 30, 2022 | 20.0% | +3.0 pts | KLA Form 10-K (period 2024-06-30, filed 2024-08-05) ↗ |
| FY2021 | Jun 30, 2021 | 17.0% | – | KLA Form 10-K (period 2023-06-30, filed 2023-08-04) ↗ |
Cite this data
StockData. (2026). KLA Largest single customer concentration (TSMC) — share of annual revenue (%) (%), annual FY2021–FY2026 [Data set]. Compiled from KLA SEC filings and investor materials. https://stockdatahq.com/stocks/klac/kpis/largest-customer-fy
See every metric in the KLA KPI table. Data updated Oct 25, 2026.