KLA Corporation
MX ˙ BMV ˙ US4824801009
SecurityMX:KLAC / KLA Corporation
InstitutionNorthern Trust Corp
Latest Disclosed Ownership1,571,945 shares
Latest Disclosed Value $ 2,314,547,536
Northern Trust Corp reports 1.90% decrease in ownership of KLAC / KLA Corporation

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 1,571,945 shares of KLA Corporation (MX:KLAC) valued at $2,314,547,536 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,602,371 shares of KLA Corporation. This represents a change in shares of -1.90% 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 NEW 482480100 1,571,945 -30,426 -1.90 2,314,548 18.88 0.0627
2026-02-17 2025-12-31 13F KLA COM NEW 482480100 1,602,371 -32,566 -1.99 1,947,009 10.41 0.0512
2025-11-14 2025-09-30 13F KLA COM NEW 482480100 1,634,937 6,282 0.39 1,763,443 20.88 0.2256
2025-08-13 2025-06-30 13F KLA COM NEW 482480100 1,628,655 -13,688 -0.83 1,458,851 30.67 0.2006
2025-05-13 2025-03-31 13F KLA COM NEW 482480100 1,642,343 -42,857 -2.54 1,116,465 5.14 0.1658
2025-02-14 2024-12-31 13F KLA COM NEW 482480100 1,685,200 204,330 13.80 1,061,878 -7.41 0.1504
2024-11-13 2024-09-30 13F KLA COM 482480100 1,480,870 -43,978 -2.88 1,146,801 -8.79 0.1877
2024-08-14 2024-06-30 13F KLA COM 482480100 1,524,848 21,111 1.40 1,257,252 19.69 0.2118
2024-05-14 2024-03-31 13F KLA COM 482480100 1,503,737 -51,086 -3.29 1,050,466 16.23 0.1815
2024-02-13 2023-12-31 13F KLA COM 482480100 1,554,823 -43,854 -2.74 903,819 23.26 0.1636
2023-11-13 2023-09-30 13F KLA COM 482480100 1,598,677 54,472 3.53 733,249 -2.10 0.1420
2023-08-11 2023-06-30 13F KLA COM 482480100 1,544,205 -73,131 -4.52 748,970 16.01 0.1439
2023-05-15 2023-03-31 13F KLA COM 482480100 1,617,336 -32,387 -1.96 645,592 3.79 0.1280
2023-02-13 2022-12-31 13F KLA COM 482480100 1,649,723 -41,150 -2.43 621,995 21.55 0.1305
2022-11-14 2022-09-30 13F KLA COM 482480100 1,690,873 -39,118 -2.26 511,709 -7.30 0.1169
2022-08-12 2022-06-30 13F KLA COM 482480100 1,729,991 -62,291 -3.48 552,005 -15.86 0.1182
2022-05-13 2022-03-31 13F KLA COM 482480100 1,792,282 -87,805 -4.67 656,083 -18.87 0.1154
2022-02-08 2021-12-31 13F KLA COM NEW 482480100 1,880,087 7,891 0.42 808,645 29.12 0.1325
2021-11-15 2021-09-30 13F KLA COM NEW 482480100 1,872,196 43,397 2.37 626,269 5.63 0.1109
2021-08-13 2021-06-30 13F KLA COM NEW 482480100 1,828,799 -53,722 -2.85 592,914 -4.67 0.1044
2021-05-12 2021-03-31 13F KLA COM NEW 482480100 1,882,521 -72,811 -3.72 621,984 22.86 0.1157
2021-02-11 2020-12-31 13F KLA COM NEW 482480100 1,955,332 -60,800 -3.02 506,255 29.61 0.0986
2020-11-16 2020-09-30 13F KLA COM NEW 482480100 2,016,132 -20,938 -1.03 390,606 -1.40 0.0857
2020-08-14 2020-06-30 13F KLA COM 482480100 2,037,070 -54,270 -2.59 396,171 31.79 0.0939
2020-05-14 2020-03-31 13F KLA COM NEW 482480100 2,091,340 -16,461 -0.78 300,608 -19.95 0.0863
2020-02-14 2019-12-31 13F KLA COM NEW 482480100 2,107,801 2,316 0.11 375,548 11.86 0.0841
2019-11-13 2019-09-30 13F KLA COM 482480100 2,105,485 -288,121 -12.04 335,719 18.66 0.0804
2019-08-13 2019-06-30 13F KLA-TENCOR COM 482480100 2,393,606 86,714 3.76 282,924 2.71 0.0671
2019-05-13 2019-03-31 13F KLA-TENCOR COM 482480100 2,306,892 84,247 3.79 275,466 38.49 0.0680
2019-02-12 2018-12-31 13F KLA-TENCOR COM 482480100 2,222,645 106,733 5.04 198,904 -7.58 0.0558
2018-11-14 2018-09-30 13F KLA-TENCOR COM 482480100 2,115,912 9,956 0.47 215,209 -0.33 0.0527
2018-09-18 2018-06-30 13F/A-1 KLA-TENCOR COM 482480100 2,105,956 -67,315 -3.10 215,924 -8.86 0.0548
2018-08-14 2018-06-30 13F KLA-TENCOR COM 482480100 2,116,491 -56,780 217,004
2018-05-09 2018-03-31 13F KLA-TENCOR COM 482480100 2,173,271 -2,545 -0.12 236,908 3.63 0.0616
2018-02-14 2017-12-31 13F KLA-TENCOR COM 482480100 2,175,816 66,021 3.13 228,613 2.22 0.0579
2017-11-13 2017-09-30 13F KLA-TENCOR COM 482480100 2,109,795 121,371 6.10 223,639 22.91 0.0583
2017-08-11 2017-06-30 13F KLA-TENCOR COM 482480100 1,988,424 6,922 0.35 181,960 -3.41 0.0509
2017-05-12 2017-03-31 13F KLA-TENCOR COM 482480100 1,981,502 8,834 0.45 188,381 21.37 0.0543
2017-02-13 2016-12-31 13F KLA-TENCOR COM 482480100 1,972,668 55,369 2.89 155,210 16.13 0.0476
2016-11-09 2016-09-30 13F KLA-TENCOR COM 482480100 1,917,299 36,303 1.93 133,655 -3.00 0.0416
2016-08-12 2016-06-30 13F KLA-TENCOR COM 482480100 1,880,996 14,774 0.79 137,783 1.57 0.0447
2016-08-19 2016-03-31 13F/A-1 KLA-TENCOR COM 482480100 1,866,222 -27,228 -1.44 135,650 3.30 0.0450
2016-05-13 2016-03-31 13F Kla-Tencor COMM 482480100 1,866,222 135,880
2016-02-12 2015-12-31 13F Kla-Tencor COMM 482480100 1,893,450 -138,966 -6.84 131,311 29.22 0.0435
2015-11-12 2015-09-30 13F Kla-Tencor COMM 482480100 2,032,416 2,032,416 0.00 101,621 0.0339
2015-08-13 2015-06-30 13F Kla-Tencor COMM 482480100 0 -2,177,799 -100.00 0 -100.00
2015-05-14 2015-03-31 13F Kla-Tencor COMM 482480100 2,177,799 -61,012 -2.73 126,945 -19.37 0.0382
2015-02-12 2014-12-31 13F Kla-Tencor COM 482480100 2,238,811 -2,066 -0.09 157,433 -10.82 0.0475
2014-11-13 2014-09-30 13F Kla-Tencor COMM 482480100 2,240,877 48,528 2.21 176,536 10.85 0.0554
2014-08-14 2014-06-30 13F KLA-TENCOR com 482480100 2,192,349 74,024 3.49 159,253 8.73 0.0496
2014-05-14 2014-03-31 13F KLA-TENCOR COMM 482480100 2,118,325 -334,565 -13.64 146,461 -7.37 0.0461
2014-02-21 2013-12-31 13F/A-1 KLA-TENCOR COM 482480100 2,452,890 24,250 1.00 158,113 6.99 0.0507
2014-02-12 2013-12-31 13F KLA-TENCOR COM 482480100 2,452,890 158,113
2013-11-13 2013-09-30 13F KLA-TENCOR COM 482480100 2,428,640 -50,871 -2.05 147,783 6.95 0.0520
2013-08-09 2013-06-30 13F KLA-TENCOR COM 482480100 2,479,511 2,479,511 138,183 0.0501
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.