KLA Corporation
MX ˙ BMV ˙ US4824801009
SecurityMX:KLAC / KLA Corporation
InstitutionHarbor Island Capital LLC
Latest Disclosed Ownership13,596 shares
Latest Disclosed Value $ 20,018,886
Harbor Island Capital LLC ownership in KLAC / KLA Corporation

On May 12, 2026 - Harbor Island Capital LLC filed a 13F-HR form disclosing ownership of 13,596 shares of KLA Corporation (MX:KLAC) valued at $20,018,886 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 13,596 shares of KLA Corporation. This represents a change in shares of 0.00% 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)
2026-05-12 2026-03-31 13F KLA COM NEW 482480100 13,596 0 0.00 20,019 21.17 7.4371
2026-01-23 2025-12-31 13F KLA COM NEW 482480100 13,596 0 0.00 16,520 12.66 6.3342
2025-10-22 2025-09-30 13F KLA COM NEW 482480100 13,596 0 0.00 14,665 20.41 6.2762
2025-08-07 2025-06-30 13F KLA COM NEW 482480100 13,596 -953 -6.55 12,178 23.13 5.7146
2025-05-09 2025-03-31 13F KLA COM 482480100 14,549 -205 -1.39 9,890 6.39 4.8986
2025-01-27 2024-12-31 13F KLA COM NEW 482480100 14,754 0 0.00 9,297 -18.63 4.4482
2024-10-17 2024-09-30 13F KLA COM NEW 482480100 14,754 0 0.00 11,426 -6.08 5.4053
2024-07-25 2024-06-30 13F KLA COM NEW 482480100 14,754 -80 -0.54 12,165 17.39 5.2386
2024-04-18 2024-03-31 13F KLA COM NEW 482480100 14,834 0 0.00 10,363 20.17 4.7463
2024-01-17 2023-12-31 13F KLA COM NEW 482480100 14,834 0 0.00 8,623 26.75 4.2773
2023-11-07 2023-09-30 13F KLA COM NEW 482480100 14,834 -392 -2.57 6,804 -7.87 3.9315
2023-07-13 2023-06-30 13F KLA COM NEW 482480100 15,226 -1,698 -10.03 7,385 9.31 3.9498
2023-04-17 2023-03-31 13F KLA COM NEW 482480100 16,924 0 0.00 6,756 5.88 3.7100
2023-01-17 2022-12-31 13F KLA COM NEW 482480100 16,924 90 0.53 6,381 25.25 4.0626
2022-10-14 2022-09-30 13F KLA COM NEW 482480100 16,834 -392 -2.28 5,094 -7.31 3.5612
2022-07-26 2022-06-30 13F KLA COM NEW 482480100 17,226 -2 -0.01 5,496 -12.84 3.3631
2022-05-06 2022-03-31 13F KLA COM NEW 482480100 17,228 0 0.00 6,306 -14.90 3.0279
2022-01-27 2021-12-31 13F KLA COM NEW 482480100 17,228 0 0.00 7,410 28.58 3.2856
2021-10-19 2021-09-30 13F KLA COM NEW 482480100 17,228 0 0.00 5,763 3.19 3.0350
2021-07-28 2021-06-30 13F KLA COM NEW 482480100 17,228 0 0.00 5,585 -1.88 2.7787
2021-04-15 2021-03-31 13F KLA COM 482480100 17,228 0 0.00 5,692 27.59 2.9563
2021-01-26 2020-12-31 13F KLA COM NEW 482480100 17,228 0 0.00 4,461 33.64 2.8612
2020-10-27 2020-09-30 13F KLA COM NEW 482480100 17,228 0 0.00 3,338 -0.39 2.6838
2020-08-04 2020-06-30 13F KLA COM NEW 482480100 17,228 0 0.00 3,351 35.34 2.7985
2020-04-30 2020-03-31 13F KLA COM NEW 482480100 17,228 1,328 8.35 2,476 -12.60 2.3874
2020-01-29 2019-12-31 13F KLA COM NEW 482480100 15,900 -133 -0.83 2,833 10.84 2.1220
2019-10-29 2019-09-30 13F KLA COM NEW 482480100 16,033 0 0.00 2,556 34.88 2.1531
2019-07-25 2019-06-30 13F KLA-TENCOR COM 482480100 16,033 16,033 1,895 1.7085
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.