KLA Corporation
MX ˙ BMV ˙ US4824801009
SecurityMX:KLAC / KLA Corporation
InstitutionOak Associates Ltd /oh/
Latest Disclosed Ownership61,315 shares
Latest Disclosed Value $ 90,280,819
Oak Associates Ltd /oh/ reports 25.16% decrease in ownership of KLAC / KLA Corporation

On May 14, 2026 - Oak Associates Ltd /oh/ filed a 13F-HR form disclosing ownership of 61,315 shares of KLA Corporation (MX:KLAC) valued at $90,280,819 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 81,923 shares of KLA Corporation. This represents a change in shares of -25.16% 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)
2026-05-14 2026-03-31 13F KLA COM 482480100 61,315 -20,608 -25.16 90,281 -9.30 6.0747
2026-02-12 2025-12-31 13F KLA COM 482480100 81,923 -6,634 -7.49 99,543 104,681.05 5.9831
2025-11-12 2025-09-30 13F KLA COM 482480100 88,557 -1,559 -1.73 96 -99.88 5.8310
2025-08-12 2025-06-30 13F KLA COM 482480100 90,116 1,504 1.70 80,721 34.00 5.2722
2025-05-14 2025-03-31 13F KLA COM 482480100 88,612 -25 -0.03 60,239 7.85 4.5181
2025-02-13 2024-12-31 13F KLA COM 482480100 88,637 -27,075 -23.40 55,852 -37.67 3.8521
2024-11-12 2024-09-30 13F KLA COM 482480100 115,712 -19,968 -14.72 89,609 -19.90 6.0264
2024-08-08 2024-06-30 13F KLA COM 482480100 135,680 -9,005 -6.22 111,869 10.68 7.4198
2024-05-10 2024-03-31 13F KLA COM 482480100 144,685 -1,290 -0.88 101,073 19.11 7.0051
2024-02-14 2023-12-31 13F KLA COM 482480100 145,975 -12,216 -7.72 84,855 16.95 6.4169
2023-11-13 2023-09-30 13F KLA COM 482480100 158,191 -1,478 -0.93 72,556 -6.31 6.0378
2023-08-11 2023-06-30 13F KLA COM 482480100 159,669 -12,915 -7.48 77,443 12.41 6.1927
2023-05-11 2023-03-31 13F KLA COM 482480100 172,584 -11,445 -6.22 68,891 -0.71 5.6649
2023-02-09 2022-12-31 13F KLA COM 482480100 184,029 -4,629 -2.45 69,385 21.53 5.8207
2022-11-09 2022-09-30 13F KLA COM 482480100 188,658 -532 -0.28 57,094 -5.42 4.8445
2022-08-12 2022-06-30 13F KLA COM 482480100 189,190 -6,788 -3.46 60,367 -15.85 4.7194
2022-05-12 2022-03-31 13F KLA COM 482480100 195,978 -30,193 -13.35 71,740 -26.25 4.3781
2022-02-10 2021-12-31 13F KLA COM 482480100 226,171 -35,128 -13.44 97,279 11.29 5.1810
2021-11-12 2021-09-30 13F KLA COM 482480100 261,299 -19 -0.01 87,407 3.17 4.9760
2021-08-09 2021-06-30 13F KLA COM 482480100 261,318 -52,469 -16.72 84,722 -18.28 4.7956
2021-05-13 2021-03-31 13F KLA COM 482480100 313,787 -36,383 -10.39 103,675 14.35 6.1323
2021-02-12 2020-12-31 13F KLA COM 482480100 350,170 -4,935 -1.39 90,663 31.78 5.4798
2020-11-13 2020-09-30 13F KLA COM 482480100 355,105 -9,468 -2.60 68,798 -2.97 4.5965
2020-08-11 2020-06-30 13F KLA COM 482480100 364,573 -5,092 -1.38 70,902 33.43 4.7605
2020-05-15 2020-03-31 13F KLA COM 482480100 369,665 -137,880 -27.17 53,136 -41.24 4.3582
2020-02-13 2019-12-31 13F KLA COM 482480100 507,545 -92,205 -15.37 90,429 -5.44 5.3264
2019-11-12 2019-09-30 13F KLA COM 482480100 599,750 -28,641 -4.56 95,630 28.75 5.8984
2019-08-09 2019-06-30 13F KLA COM 482480100 628,391 -1,801 -0.29 74,276 -1.30 4.6301
2019-05-09 2019-03-31 13F KLA-Tencor COM 482480100 630,192 371 0.06 75,251 33.51 4.5977
2019-02-07 2018-12-31 13F KLA-Tencor COM 482480100 629,821 43,121 7.35 56,363 -5.55 3.9729
2018-11-13 2018-09-30 13F KLA-Tencor COM 482480100 586,700 25,565 4.56 59,673 3.72 3.6495
2018-08-14 2018-06-30 13F KLA-Tencor COM 482480100 561,135 27,842 5.22 57,533 -1.03 3.8509
2018-05-14 2018-03-31 13F KLA-Tencor COM 482480100 533,293 3,845 0.73 58,134 4.50 4.0546
2018-02-08 2017-12-31 13F KLA-Tencor COM 482480100 529,448 14,038 2.72 55,629 1.82 3.9442
2017-11-07 2017-09-30 13F KLA-Tencor COM 482480100 515,410 11,862 2.36 54,633 18.56 4.0249
2017-08-18 2017-06-30 13F KLA-Tencor COM 482480100 503,548 18,101 3.73 46,080 -0.15 3.4708
2017-05-16 2017-03-31 13F KLA-Tencor COM 482480100 485,447 53,226 12.31 46,151 35.71 3.6866
2017-02-08 2016-12-31 13F KLA-Tencor COM 482480100 432,221 -8,200 -1.86 34,007 2.80 3.3554
2016-11-09 2016-09-30 13F KLA-TENCOR CORP COM COM 482480100 440,421 32,856 8.06 33,080 10.81 3.4085
2016-08-09 2016-06-30 13F KLA-TENCOR CORP COM COM 482480100 407,565 -144 -0.04 29,854 0.57 3.5848
2016-05-19 2016-03-31 13F KLA-TENCOR CORP COM COM 482480100 407,709 881 0.22 29,685 5.22 3.6344
2016-02-08 2015-12-31 13F KLA-TENCOR CORP COM COM 482480100 406,828 -2,807 -0.69 28,213 37.75 3.3612
2015-11-16 2015-09-30 13F KLA-TENCOR CORP COM COM 482480100 409,635 17,407 4.44 20,482 -7.10 2.7150
2015-08-11 2015-06-30 13F KLA-TENCOR CORP COM COM 482480100 392,228 -1,799 -0.46 22,047 -4.01 2.6836
2015-05-11 2015-03-31 13F KLA-TENCOR CORP COM COM 482480100 394,027 -538 -0.14 22,968 -17.22 2.7625
2015-02-09 2014-12-31 13F KLA-TENCOR CORP COM COM 482480100 394,565 -2,790 -0.70 27,746 -11.37 3.3190
2014-12-16 2014-09-30 13F KLA-TENCOR CORP COM COM 482480100 397,355 -32,892 -7.64 31,304 0.16 3.8579
2014-08-26 2014-06-30 13F KLA-TENCOR CORP COM COM 482480100 430,247 -9,613 -2.19 31,253 2.77 3.8181
2014-06-03 2014-03-31 13F KLA-TENCOR CORP COM COM 482480100 439,860 -90,824 -17.11 30,412 -11.10 3.7618
2014-03-04 2013-12-31 13F KLA-TENCOR CORP COM COM 482480100 530,684 -13,363 -2.46 34,208 12.82 3.7000
2013-08-13 2013-06-30 13F KLA-TENCOR CORP COM COM 482480100 544,047 544,047 30,320 3.6105
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.