KLA Corporation
MX ˙ BMV ˙ US4824801009
SecurityMX:KLAC / KLA Corporation
InstitutionBaldwin Brothers Inc/ma
Latest Disclosed Ownership26,552 shares
Latest Disclosed Value $ 39,095,430
Baldwin Brothers Inc/ma reports 13.41% decrease in ownership of KLAC / KLA Corporation

On April 14, 2026 - Baldwin Brothers Inc/ma filed a 13F-HR form disclosing ownership of 26,552 shares of KLA Corporation (MX:KLAC) valued at $39,095,430 USD as of March 31, 2026.

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)
2026-04-14 2026-03-31 13F KLA COM NEW 482480100 26,552 -4,112 -13.41 39,095 4.93 2.1731
2026-01-07 2025-12-31 13F KLA COM NEW 482480100 30,664 -6,559 -17.62 37,260 -7.20 2.3826
2025-10-14 2025-09-30 13F KLA COM NEW 482480100 37,223 -912 -2.39 40,149 17.54 2.6153
2025-07-24 2025-06-30 13F KLA COM NEW 482480100 38,135 -443 -1.15 34,159 30.25 2.3199
2025-04-14 2025-03-31 13F KLA COM NEW 482480100 38,578 471 1.24 26,225 9.22 1.8398
2025-01-22 2024-12-31 13F KLA COM NEW 482480100 38,107 2,337 6.53 24,012 -13.32 1.6584
2024-10-16 2024-09-30 13F KLA COM NEW 482480100 35,770 337 0.95 27,701 -5.18 1.8879
2024-07-12 2024-06-30 13F KLA COM NEW 482480100 35,433 -2,317 -6.14 29,215 10.78 2.2759
2024-04-12 2024-03-31 13F KLA COM NEW 482480100 37,750 -1,168 -3.00 26,371 16.57 1.9863
2024-01-08 2023-12-31 13F KLA COM NEW 482480100 38,918 -192 -0.49 22,623 26.12 1.7773
2023-10-10 2023-09-30 13F KLA COM NEW 482480100 39,110 -471 -1.19 17,938 -6.56 1.5436
2023-07-14 2023-06-30 13F KLA COM NEW 482480100 39,581 316 0.80 19,198 22.48 1.5747
2023-04-21 2023-03-31 13F KLA COM NEW 482480100 39,265 13 0.03 15,673 5.91 1.3660
2023-01-27 2022-12-31 13F KLA COM NEW 482480100 39,252 -72 -0.18 14,799 24.35 1.3422
2022-10-14 2022-09-30 13F KLA COM NEW 482480100 39,324 20,055 104.08 11,901 93.58 1.6453
2022-07-18 2022-06-30 13F KLA COM NEW 482480100 19,269 18,354 2,005.90 6,148 1,735.22 0.7972
2022-04-13 2022-03-31 13F KLA COM NEW 482480100 915 250 37.59 335 17.13 0.0279
2022-01-14 2021-12-31 13F KLA COM NEW 482480100 665 0 0.00 286 28.83 0.0286
2021-10-27 2021-09-30 13F KLA COM NEW 482480100 665 0 0.00 222 2.78 0.0246
2021-07-30 2021-06-30 13F KLA COM NEW 482480100 665 -200 -23.12 216 -24.48 0.0236
2021-04-08 2021-03-31 13F KLA COM NEW 482480100 865 200 30.08 286 66.28 0.0340
2021-01-12 2020-12-31 13F KLA COM NEW 482480100 665 650 4,333.33 172 5,633.33 0.0216
2020-10-16 2020-09-30 13F KLA COM NEW 482480100 15 15 3 0.0004
2019-02-01 2018-12-31 13F KLA-TENCOR COMMON 482480100 0 -58,386 -100.00 0 -100.00
2018-10-26 2018-09-30 13F KLA-TENCOR COMMON 482480100 58,386 357 0.62 5,938 -0.20 0.8315
2018-07-24 2018-06-30 13F KLA-TENCOR COMMON 482480100 58,029 1,729 3.07 5,950 -3.05 0.9248
2018-04-16 2018-03-31 13F KLA-TENCOR COMMON 482480100 56,300 5,305 10.40 6,137 14.54 0.9927
2018-01-24 2017-12-31 13F KLA-TENCOR COMMON 482480100 50,995 5,610 12.36 5,358 11.37 0.8345
2017-10-26 2017-09-30 13F KLA-TENCOR COMMON 482480100 45,385 45,385 4,811 0.7735
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.