KLA Corporation
MX ˙ BMV ˙ US4824801009
SecurityMX:KLAC / KLA Corporation
InstitutionGuinness Asset Management LTD
Latest Disclosed Ownership33,295 shares
Latest Disclosed Value $ 48,251,198
Guinness Asset Management LTD reports 26.09% decrease in ownership of KLAC / KLA Corporation

On April 21, 2026 - Guinness Asset Management LTD filed a 13F-HR form disclosing ownership of 33,295 shares of KLA Corporation (MX:KLAC) valued at $48,251,198 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 45,046 shares of KLA Corporation. This represents a change in shares of -26.09% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-21 2026-03-31 13F KLA COM NEW 482480100 33,295 -11,751 -26.09 48,251 -13.65 0.8321
2026-02-09 2025-12-31 13F KLA COM NEW 482480100 45,046 -6,410 -12.46 55,879 2.05 0.9064
2025-11-05 2025-09-30 13F KLA COM NEW 482480100 51,456 -7,081 -12.10 54,756 4.43 0.8724
2025-08-01 2025-06-30 13F KLA COM NEW 482480100 58,537 -1,201 -2.01 52,430 29.13 0.9382
2025-05-13 2025-03-31 13F KLA COM NEW 482480100 59,738 2,994 5.28 40,604 13.55 0.8452
2025-01-16 2024-12-31 13F KLA COM NEW 482480100 56,744 12,861 29.31 35,757 5.21 0.6722
2024-10-10 2024-09-30 13F KLA COM NEW 482480100 43,883 -19,023 -30.24 33,987 -34.46 0.6436
2024-07-11 2024-06-30 13F KLA COM NEW 482480100 62,906 -2,777 -4.23 51,854 13.02 1.0700
2024-04-11 2024-03-31 13F KLA COM NEW 482480100 65,683 5,376 8.91 45,883 30.87 0.9546
2024-02-12 2023-12-31 13F KLA COM NEW 482480100 60,307 195 0.32 35,059 27.16 0.7666
2023-11-06 2023-09-30 13F KLA COM NEW 482480100 60,112 3,328 5.86 27,571 0.11 0.6344
2023-07-24 2023-06-30 13F KLA COM NEW 482480100 56,784 3,554 6.68 27,541 29.62 0.6392
2023-04-10 2023-03-31 13F KLA COM NEW 482480100 53,230 -57 -0.11 21,247 5.76 0.5399
2023-02-02 2022-12-31 13F KLA COM NEW 482480100 53,287 568 1.08 20,091 25.92 0.5646
2022-10-24 2022-09-30 13F KLA COM NEW 482480100 52,719 -14,723 -21.83 15,955 -25.86 0.5442
2022-09-06 2022-06-30 13F KLA COM NEW 482480100 67,442 -6,057 -8.24 21,519 -20.02 0.8476
2022-04-13 2022-03-31 13F KLA COM NEW 482480100 73,499 1,339 1.86 26,905 -13.31 1.0012
2022-01-19 2021-12-31 13F KLA COM NEW 482480100 72,160 3,785 5.54 31,036 35.69 1.2134
2021-12-07 2021-09-30 13F KLA COM NEW 482480100 68,375 -2,876 -4.04 22,872 -0.99 1.0827
2021-08-03 2021-06-30 13F KLA COM NEW 482480100 71,251 1,401 2.01 23,100 0.10 1.2724
2021-04-21 2021-03-31 13F KLA COM NEW 482480100 69,850 6,925 11.01 23,078 41.65 1.4538
2021-01-25 2020-12-31 13F KLA COM NEW 482480100 62,925 5,015 8.66 16,292 45.22 1.1803
2020-10-27 2020-09-30 13F KLA COM NEW 482480100 57,910 8,416 17.00 11,219 16.56 1.1743
2020-07-28 2020-06-30 13F KLA COM NEW 482480100 49,494 -6,030 -10.86 9,625 20.60 1.1379
2020-04-30 2020-03-31 13F KLA COM NEW 482480100 55,524 2,500 4.71 7,981 -15.53 1.1558
2020-02-04 2019-12-31 13F KLA COM NEW 482480100 53,024 -10,873 -17.02 9,448 -7.27 1.1541
2019-10-28 2019-09-30 13F KLA COM NEW 482480100 63,897 2,097 3.39 10,189 39.48 1.5458
2019-07-26 2019-06-30 13F KLA-TENCOR COM 482480100 61,800 4,340 7.55 7,305 6.47 1.1853
2019-04-24 2019-03-31 13F KLA-TENCOR COM 482480100 57,460 1,210 2.15 6,861 36.29 1.1678
2019-01-28 2018-12-31 13F KLA-TENCOR COM 482480100 56,250 -9,590 -14.57 5,034 -24.83 1.0288
2018-10-17 2018-09-30 13F KLA-TENCOR COM 482480100 65,840 6,110 10.23 6,697 9.36 1.2109
2018-08-16 2018-06-30 13F KLA-TENCOR COM 482480100 59,730 7,160 13.62 6,124 6.86 1.2000
2018-04-17 2018-03-31 13F KLA-TENCOR COM 482480100 52,570 52,570 5,731 1.2586
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.