KLA Corporation
AT ˙ WBAG ˙ US4824801009
1.735,00 € ↓ -73,00 (-4,04%)
2026-06-05
DEL PRIS
SecurityAT:KLAC / KLA Corporation
InstitutionAlliancebernstein L.p.
Latest Disclosed Ownership419,437 shares
Latest Disclosed Value $ 509,649,510
Alliancebernstein L.p. reports 66.13% increase in ownership of KLAC / KLA Corporation

On May 15, 2026 - Alliancebernstein L.p. filed a 13F-HR form disclosing ownership of 419,437 shares of KLA Corporation (AT:KLAC) valued at $517,417,483 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 252,479 shares of KLA Corporation. This represents a change in shares of 66.13% during the quarter. The current value of the position is $727,723,195 USD.

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)
2026-05-15 2026-03-31 13F KLA COM NEW 482480100 419,437 166,958 66.13 509,650 66.13 0.1650
2026-02-17 2025-12-31 13F KLA COM NEW 482480100 252,479 -2,046 -0.80 306,782 11.75 0.0969
2025-11-14 2025-09-30 13F KLA COM NEW 482480100 254,525 -20,180 -7.35 274,531 11.57 0.0865
2025-08-14 2025-06-30 13F KLA COM NEW 482480100 274,705 -106,756 -27.99 246,064 -5.11 0.0803
2025-05-15 2025-03-31 13F KLA COM NEW 482480100 381,461 49,390 14.87 259,317 23.93 0.0938
2025-02-12 2024-12-31 13F KLA COM NEW 482480100 332,071 -34,332 -9.37 209,245 -26.26 0.0710
2024-11-14 2024-09-30 13F KLA COM NEW 482480100 366,403 -9,807 -2.61 283,746 -8.52 0.0953
2024-08-14 2024-06-30 13F KLA COM NEW 482480100 376,210 1,391 0.37 310,189 18.47 0.1082
2024-05-14 2024-03-31 13F KLA COM NEW 482480100 374,819 -180,682 -32.53 261,837 -18.91 0.0927
2024-02-14 2023-12-31 13F KLA COM NEW 482480100 555,501 -1,764 -0.32 322,913 26.34 0.1243
2023-11-14 2023-09-30 13F KLA COM NEW 482480100 557,265 50,404 9.94 255,595 3.97 0.1087
2023-08-15 2023-06-30 13F KLA COM NEW 482480100 506,861 -72,588 -12.53 245,838 6.29 0.1003
2023-05-15 2023-03-31 13F KLA COM NEW 482480100 579,449 -149,269 -20.48 231,299 -15.81 0.0991
2023-02-15 2022-12-31 13F KLA COM NEW 482480100 728,718 -91,651 -11.17 274,749 10.67 0.1237
2022-11-15 2022-09-30 13F KLA COM NEW 482480100 820,369 -83,741 -9.26 248,268 -13.94 0.1202
2022-08-15 2022-06-30 13F KLA COM NEW 482480100 904,110 75,516 9.11 288,483 -4.89 0.1318
2022-05-13 2022-03-31 13F KLA COM NEW 482480100 828,594 91,889 12.47 303,315 -4.28 0.1170
2022-02-14 2021-12-31 13F KLA COM NEW 482480100 736,705 224,791 43.91 316,864 85.04 0.1120
2021-11-10 2021-09-30 13F KLA COM NEW 482480100 511,914 55,346 12.12 171,240 15.68 0.0676
2021-07-30 2021-06-30 13F KLA COM NEW 482480100 456,568 -40,791 -8.20 148,024 -9.92 0.0594
2021-05-06 2021-03-31 13F KLA COM NEW 482480100 497,359 -197,546 -28.43 164,327 -8.67 0.0721
2021-02-08 2020-12-31 13F KLA COM NEW 482480100 694,905 -230,181 -24.88 179,918 0.39 0.0849
2020-11-12 2020-09-30 13F KLA COM NEW 482480100 925,086 -257,362 -21.77 179,226 -22.06 0.0965
2020-08-13 2020-06-30 13F KLA COM NEW 482480100 1,182,448 -316,325 -21.11 229,962 6.74 0.1351
2020-05-14 2020-03-31 13F KLA COM NEW 482480100 1,498,773 810,245 117.68 215,434 75.61 0.1544
2020-02-18 2019-12-31 13F KLA COM NEW 482480100 688,528 -72,127 -9.48 122,675 1.15 0.0697
2019-11-14 2019-09-30 13F KLA COM NEW 482480100 760,655 -157,826 -17.18 121,286 11.72 0.0755
2019-08-14 2019-06-30 13F KLA-TENCOR COM 482480100 918,481 444,846 93.92 108,564 91.96 0.0674
2019-05-14 2019-03-31 13F KLA-TENCOR COM 482480100 473,635 78,148 19.76 56,557 59.80 0.0368
2019-02-13 2018-12-31 13F KLA-TENCOR COM 482480100 395,487 -106,636 -21.24 35,392 -30.70 0.0263
2018-11-08 2018-09-30 13F KLA-TENCOR COM 482480100 502,123 2,931 0.59 51,071 -0.22 0.0334
2018-08-13 2018-06-30 13F KLA-TENCOR COM 482480100 499,192 -43,550 -8.02 51,182 -13.49 0.0356
2018-05-14 2018-03-31 13F KLA-TENCOR COM 482480100 542,742 -7,005 -1.27 59,164 2.43 0.0428
2018-02-13 2017-12-31 13F KLA-TENCOR COM 482480100 549,747 13,329 2.48 57,762 1.59 0.0413
2017-11-13 2017-09-30 13F KLA-TENCOR COM 482480100 536,418 30,379 6.00 56,860 22.79 0.0426
2017-08-10 2017-06-30 13F KLA-TENCOR COM 482480100 506,039 -11,723 -2.26 46,308 -5.92 0.0358
2017-05-11 2017-03-31 13F KLA-TENCOR COM 482480100 517,762 246,910 91.16 49,224 130.98 0.0392
2017-02-13 2016-12-31 13F KLA-TENCOR COM 482480100 270,852 -5,834 -2.11 21,311 10.49 0.0178
2016-11-10 2016-09-30 13F KLA-TENCOR COM 482480100 276,686 1,200 0.44 19,288 -4.42 0.0163
2016-08-11 2016-06-30 13F KLA-TENCOR COM 482480100 275,486 1,900 0.69 20,179 1.30 0.0174
2016-05-13 2016-03-31 13F KLA-TENCOR COM 482480100 273,586 -4,641 -1.67 19,920 3.24 0.0169
2016-02-16 2015-12-31 13F/A-1 KLA-TENCOR COM 482480100 278,227 -99,943 -26.43 19,295 2.04 0.0164
2016-02-12 2015-12-31 13F KLA-TENCOR COM 482480100 278,227 13,911
2015-11-13 2015-09-30 13F KLA-TENCOR COM 482480100 378,170 63,351 20.12 18,909 6.85 0.0162
2015-08-14 2015-06-30 13F KLA-TENCOR COM 482480100 314,819 -12,974 -3.96 17,696 -7.38 0.0146
2015-05-13 2015-03-31 13F KLA-TENCOR COM 482480100 327,793 -24,286 -6.90 19,107 -22.82 0.0155
2015-02-13 2014-12-31 13F KLA-TENCOR COM 482480100 352,079 -713 -0.20 24,758 -10.92 0.0206
2014-11-13 2014-09-30 13F KLA-TENCOR COM 482480100 352,792 755 0.21 27,793 8.69 0.0234
2014-08-13 2014-06-30 13F KLA-TENCOR COM 482480100 352,037 -24,541 -6.52 25,572 -1.79 0.0216
2014-05-13 2014-03-31 13F KLA-TENCOR COM 482480100 376,578 22,064 6.22 26,037 13.94 0.0225
2014-02-13 2013-12-31 13F KLA-TENCOR COM 482480100 354,514 -5,666 -1.57 22,852 4.27 0.0204
2013-11-14 2013-09-30 13F KLA-TENCOR COM 482480100 360,180 26,931 8.08 21,917 18.01 0.0217
2013-08-13 2013-06-30 13F KLA-TENCOR COM 482480100 333,249 333,249 18,572 0.0197
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.