KLA Corporation
MX ˙ BMV ˙ US4824801009
SecurityMX:KLAC / KLA Corporation
InstitutionMariner, LLC
Latest Disclosed Ownership124,766 shares
Latest Disclosed Value $ 183,577,954
Mariner, LLC reports 18.57% decrease in ownership of KLAC / KLA Corporation

On May 13, 2026 - Mariner, LLC filed a 13F-HR form disclosing ownership of 124,766 shares of KLA Corporation (MX:KLAC) valued at $183,577,954 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 153,222 shares of KLA Corporation. This represents a change in shares of -18.57% 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)
2026-05-13 2026-03-31 13F KLA COM NEW 482480100 124,766 -28,456 -18.57 183,578 -1.41 0.2143
2026-02-13 2025-12-31 13F KLA COM NEW 482480100 153,222 -9,140 -5.63 186,196 6.34 0.2217
2025-11-14 2025-09-30 13F KLA COM NEW 482480100 162,362 1,545 0.96 175,102 21.57 0.2263
2025-08-14 2025-06-30 13F KLA COM NEW 482480100 160,817 5,679 3.66 144,036 36.60 0.2079
2025-05-15 2025-03-31 13F KLA COM NEW 482480100 155,138 11,921 8.32 105,444 16.83 0.1754
2025-02-13 2024-12-31 13F KLA COM NEW 482480100 143,217 617 0.43 90,252 -18.28 0.1516
2024-11-13 2024-09-30 13F KLA COM NEW 482480100 142,600 2,312 1.65 110,446 -4.51 0.1960
2024-08-13 2024-06-30 13F KLA COM NEW 482480100 140,288 1,219 0.88 115,667 19.07 0.2242
2024-05-15 2024-03-31 13F KLA COM NEW 482480100 139,069 -2,250 -1.59 97,147 18.26 0.2009
2024-02-14 2023-12-31 13F KLA COM NEW 482480100 141,319 -23,456 -14.24 82,149 8.70 0.1948
2023-11-13 2023-09-30 13F KLA COM NEW 482480100 164,775 1,969 1.21 75,576 -4.29 0.2027
2023-08-11 2023-06-30 13F KLA COM NEW 482480100 162,806 3,074 1.92 78,964 125,238.10 0.2110
2023-05-15 2023-03-31 13F KLA COM NEW 482480100 159,732 32,146 25.20 64 -99.87 0.1852
2023-02-14 2022-12-31 13F KLA COM NEW 482480100 127,586 9,235 7.80 48,103 34.29 0.1546
2022-11-10 2022-09-30 13F KLA COM NEW 482480100 118,351 2,007 1.73 35,820 -3.51 0.1432
2022-08-15 2022-06-30 13F KLA COM NEW 482480100 116,344 21,354 22.48 37,123 6.76 0.1524
2022-05-13 2022-03-31 13F KLA COM NEW 482480100 94,990 2,520 2.73 34,774 -12.57 0.1312
2022-02-14 2021-12-31 13F KLA COM NEW 482480100 92,470 -1,622 -1.72 39,772 26.36 0.1682
2021-11-15 2021-09-30 13F KLA COM NEW 482480100 94,092 -30,689 -24.59 31,475 -22.20 0.1643
2021-08-24 2021-06-30 13F KLA COM NEW 482480100 124,781 2,029 1.65 40,455 -0.25 0.2510
2021-05-07 2021-03-31 13F KLA COM NEW 482480100 122,752 -413 -0.34 40,555 27.18 0.2828
2021-02-16 2020-12-31 13F KLA COM NEW 482480100 123,165 123,165 0.34 31,888 -21.37 0.2446
2019-11-13 2019-09-30 13F KLA-TENCOR COM 482480100 0 -5,239 -100.00 0 -100.00
2019-08-14 2019-06-30 13F KLA-TENCOR COM 482480100 5,239 5,239 619 0.0074
2015-11-16 2015-09-30 13F KLA-TENCOR COM 482480100 0 -14,755 -100.00 0 -100.00
2015-08-17 2015-06-30 13F KLA-TENCOR COM 482480100 14,755 2,383 19.26 829 14.98 0.0384
2015-05-15 2015-03-31 13F KLA-TENCOR COM 482480100 12,372 1,661 15.51 721 -4.25 0.0613
2015-02-13 2014-12-31 13F KLA-TENCOR COM 482480100 10,711 10,711 753 0.0678
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.