KLA Corporation
MX ˙ BMV ˙ US4824801009
SecurityMX:KLAC / KLA Corporation
InstitutionEmpirical Finance, LLC
Latest Disclosed Ownership4,658 shares
Latest Disclosed Value $ 6,858,486
Empirical Finance, LLC reports 0.24% decrease in ownership of KLAC / KLA Corporation

On May 14, 2026 - Empirical Finance, LLC filed a 13F-HR/A form disclosing ownership of 4,658 shares of KLA Corporation (MX:KLAC) valued at $6,858,486 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 4,669 shares of KLA Corporation. This represents a change in shares of -0.24% 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/A-1 KLA COM NEW 482480100 4,658 -11 -0.24 6,858 20.89 0.3223
2026-05-14 2026-03-31 13F KLA COM NEW 482480100 4,658 -11 6,858 0.3223
2026-02-12 2025-12-31 13F KLA COM NEW 482480100 4,669 -199 -4.09 5,673 8.06 0.2706
2025-11-13 2025-09-30 13F KLA COM NEW 482480100 4,868 42 0.87 5,251 21.47 0.2500
2025-08-11 2025-06-30 13F KLA COM NEW 482480100 4,826 31 0.65 4,323 32.62 0.2263
2025-05-07 2025-03-31 13F KLA COM NEW 482480100 4,795 75 1.59 3,260 9.58 0.1968
2025-01-28 2024-12-31 13F KLA COM NEW 482480100 4,720 -61 -1.28 2,974 -19.67 0.1721
2024-11-06 2024-09-30 13F KLA COM NEW 482480100 4,781 84 1.79 3,702 -4.39 0.2159
2024-07-30 2024-06-30 13F KLA COM NEW 482480100 4,697 -427 -8.33 3,873 8.19 0.2419
2024-05-06 2024-03-31 13F KLA COM NEW 482480100 5,124 165 3.33 3,579 24.18 0.2197
2024-02-14 2023-12-31 13F KLA COM NEW 482480100 4,959 0 0.00 2,883 26.74 0.2010
2023-11-02 2023-09-30 13F KLA COM NEW 482480100 4,959 394 8.63 2,274 2.71 0.1671
2023-07-27 2023-06-30 13F KLA COM NEW 482480100 4,565 437 10.59 2,214 34.43 0.1715
2023-04-05 2023-03-31 13F KLA COM NEW 482480100 4,128 156 3.93 1,648 10.02 0.1543
2023-02-21 2022-12-31 13F/A-1 KLA COM NEW 482480100 3,972 263 7.09 1,498 33.42 0.1550
2023-01-24 2022-12-31 13F KLA COM NEW 482480100 3,972 263 1 0.1551
2022-11-04 2022-09-30 13F KLA COM NEW 482480100 3,709 598 19.22 1,122 12.99 0.1331
2022-08-01 2022-06-30 13F KLA COM NEW 482480100 3,111 168 5.71 993 -7.80 0.1266
2022-04-21 2022-03-31 13F KLA COM NEW 482480100 2,943 307 11.65 1,077 -5.03 0.1206
2022-02-04 2021-12-31 13F KLA COM NEW 482480100 2,636 685 35.11 1,134 73.66 0.1339
2021-11-12 2021-09-30 13F KLA COM NEW 482480100 1,951 111 6.03 653 9.38 0.0984
2021-08-10 2021-06-30 13F/A-1 KLA COM NEW 482480100 1,840 247 15.51 597 44.90 0.0973
2021-08-04 2021-06-30 13F KLA COM NEW 482480100 1,593 0 412 0.0725
2021-05-13 2021-03-31 13F KLA COM NEW 482480100 1,593 0 0.00 412 0.00 0.0725
2021-02-02 2020-12-31 13F KLA COM NEW 482480100 1,593 275 20.86 412 61.57 0.0725
2020-10-28 2020-09-30 13F/A-1 KLA COM NEW 482480100 1,318 264 25.05 255 24.39 0.0546
2020-10-26 2020-09-30 13F KLA COM NEW 482480100 9,576 8,522 1,527 426,416.0111
2020-07-20 2020-06-30 13F/A-1 KLA COM NEW 482480100 1,054 1,054 205 0.0525
2020-04-16 2020-03-31 13F KLA COM NEW 482480100 0 -9,907 -100.00 0 -100.00
2020-01-27 2019-12-31 13F KLA COM NEW 482480100 9,907 331 3.46 1,765 15.59 0.4292
2019-10-30 2019-09-30 13F KLA COM NEW 482480100 9,576 -14,263 -59.83 1,527 -45.81 0.4264
2019-07-09 2019-06-30 13F KLA-TENCOR COM 482480100 23,839 201 0.85 2,818 -0.18 0.7722
2019-05-10 2019-03-31 13F KLA-TENCOR COM 482480100 23,638 47 0.20 2,823 33.73 0.7183
2019-01-22 2018-12-31 13F KLA-TENCOR COM 482480100 23,591 23,591 -0.20 2,111 -25.22 0.6257
2018-07-09 2018-06-30 13F KLA-TENCOR COM 482480100 0 -23,638 -100.00 0 -100.00
2019-05-10 2018-03-31 13F KLA-TENCOR COM 482480100 23,638 23,638 2,823 0.5906
2017-05-11 2017-03-31 13F KLA-TENCOR COM 482480100 0 -238 -100.00 0 -100.00
2017-02-13 2016-12-31 13F KLA-TENCOR COM 482480100 238 238 19 0.0128
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.