KLA Corporation
US ˙ NasdaqGS ˙ US4824801009

SecurityKLAC / KLA Corporation
InstitutionPinnacle Associates Ltd
Latest Disclosed Ownership11,473 shares
Latest Disclosed Value $ 16,892,392
Pinnacle Associates Ltd reports 5.96% decrease in ownership of KLAC / KLA Corporation

On April 21, 2026 - Pinnacle Associates Ltd filed a 13F-HR form disclosing ownership of 11,473 shares of KLA Corporation (US:KLAC) valued at $16,892,960 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 12,200 shares of KLA Corporation. This represents a change in shares of -5.96% during the quarter. The current value of the position is $24,381,387 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)
2026-04-21 2026-03-31 13F KLA COM NEW 482480100 11,473 -727 -5.96 16,892 13.96 0.2165
2026-02-05 2025-12-31 13F KLA COM NEW 482480100 12,200 -321 -2.56 14,824 9.77 0.1872
2025-11-13 2025-09-30 13F KLA COM NEW 482480100 12,521 138 1.11 13,505 21.75 0.1792
2025-08-04 2025-06-30 13F KLA COM NEW 482480100 12,383 -85 -0.68 11,092 30.88 0.1606
2025-05-06 2025-03-31 13F KLA COM NEW 482480100 12,468 -85 -0.68 8,476 7.14 0.1242
2025-02-14 2024-12-31 13F KLA COM NEW 482480100 12,553 508 4.22 7,910 12.98 0.1073
2024-10-25 2024-09-30 13F KLA COM NEW 482480100 12,045 -581 -4.60 7,002 -32.75 0.1191
2024-07-30 2024-06-30 13F KLA COM NEW 482480100 12,626 432 3.54 10,410 22.21 0.1630
2024-04-26 2024-03-31 13F KLA COM NEW 482480100 12,194 149 1.24 8,519 21.67 0.1343
2024-01-19 2023-12-31 13F KLA COM NEW 482480100 12,045 -28 -0.23 7,002 26.44 0.1178
2023-10-24 2023-09-30 13F KLA COM NEW 482480100 12,073 -932 -7.17 5,537 -12.21 0.1029
2023-07-27 2023-06-30 13F KLA COM NEW 482480100 13,005 162 1.26 6,308 23.04 0.1095
2023-05-05 2023-03-31 13F KLA COM NEW 482480100 12,843 -463 -3.48 5,127 2.19 0.1049
2023-02-01 2022-12-31 13F/A-1 KLA COM NEW 482480100 13,306 -1,207 -8.32 5,017 14.21 0.1093
2023-01-25 2022-12-31 13F KLA COM NEW 482480100 13,812 -701 5,249 0.0001
2022-11-01 2022-09-30 13F KLA COM NEW 482480100 14,513 -250 -1.69 4,392 -6.77 0.1008
2022-08-02 2022-06-30 13F KLA COM NEW 482480100 14,763 -413 -2.72 4,711 -15.19 0.1027
2022-05-05 2022-03-31 13F KLA COM NEW 482480100 15,176 -2,030 -11.80 5,555 -24.93 0.0983
2022-02-02 2021-12-31 13F KLA COM NEW 482480100 17,206 -100 -0.58 7,400 27.83 0.1276
2021-10-19 2021-09-30 13F KLA COM NEW 482480100 17,306 155 0.90 5,789 4.10 0.1067
2021-08-02 2021-06-30 13F KLA COM NEW 482480100 17,151 170 1.00 5,561 -0.89 0.1005
2021-05-12 2021-03-31 13F KLA COM NEW 482480100 16,981 615 3.76 5,611 32.43 0.1070
2021-01-26 2020-12-31 13F KLA COM NEW 482480100 16,366 -761 -4.44 4,237 27.70 0.0860
2020-10-23 2020-09-30 13F KLA COM NEW 482480100 17,127 -760 -4.25 3,318 -4.63 0.0788
2020-08-14 2020-06-30 13F KLA COM NEW 482480100 17,887 881 5.18 3,479 42.29 0.0858
2020-05-13 2020-03-31 13F KLA COM NEW 482480100 17,006 1,105 6.95 2,445 -13.70 0.0743
2020-02-03 2019-12-31 13F KLA COM NEW 482480100 15,901 22 0.14 2,833 11.89 0.0620
2019-11-08 2019-09-30 13F KLA COM NEW 482480100 15,879 175 1.11 2,532 36.42 0.0596
2019-08-05 2019-06-30 13F KLA-TENCOR COM 482480100 15,704 2,485 18.80 1,856 17.62 0.0435
2019-05-10 2019-03-31 13F KLA-TENCOR COM 482480100 13,219 1,855 16.32 1,578 55.16 0.0357
2019-02-05 2018-12-31 13F KLA-TENCOR COM 482480100 11,364 1,940 20.59 1,017 6.05 0.0263
2018-11-09 2018-09-30 13F KLA-TENCOR COM 482480100 9,424 395 4.37 959 3.56 0.0199
2018-08-08 2018-06-30 13F KLA-TENCOR COM 482480100 9,029 1,096 13.82 926 7.05 0.0191
2018-05-11 2018-03-31 13F KLA-TENCOR COM 482480100 7,933 -650 -7.57 865 -4.10 0.0170
2018-02-12 2017-12-31 13F KLA-TENCOR COM 482480100 8,583 400 4.89 902 4.04 0.0173
2017-11-13 2017-09-30 13F KLA-TENCOR COM 482480100 8,183 0 0.00 867 15.75 0.0160
2017-08-09 2017-06-30 13F KLA-TENCOR COM 482480100 8,183 -880 -9.71 749 -13.11 0.0144
2017-05-09 2017-03-31 13F KLA-TENCOR COM 482480100 9,063 -180 -1.95 862 18.57 0.0165
2017-02-10 2016-12-31 13F KLA-TENCOR COM 482480100 9,243 383 4.32 727 17.64 0.0147
2016-11-14 2016-09-30 13F KLA-TENCOR COM 482480100 8,860 3,375 61.53 618 53.73 0.0124
2016-08-15 2016-06-30 13F KLA-TENCOR COM 482480100 5,485 325 6.30 402 6.91 0.0087
2016-05-13 2016-03-31 13F KLA-TENCOR COM 482480100 5,160 0 0.00 376 5.03 0.0080
2016-02-11 2015-12-31 13F/A-1 KLA-TENCOR COM 482480100 5,160 -300 -5.49 358 31.14 0.0075
2016-02-09 2015-12-31 13F KLA-TENCOR COM 482480100 5,160 -300 358 0.0077
2015-11-10 2015-09-30 13F KLA-TENCOR COM 482480100 5,460 -1,495 -21.50 273 -30.18 0.0060
2015-08-12 2015-06-30 13F KLA-TENCOR COM 482480100 6,955 645 10.22 391 6.25 0.0073
2015-05-15 2015-03-31 13F KLA Tencor COM 482480100 6,310 0 0.00 368 -17.12 0.0069
2015-02-12 2014-12-31 13F KLA Tencor COM 482480100 6,310 0 0.00 444 -10.66 0.0087
2014-11-12 2014-09-30 13F KLA Tencor COM 482480100 6,310 -50 -0.79 497 7.58 0.0101
2014-08-14 2014-06-30 13F KLA Tencor COM 482480100 6,360 400 6.71 462 12.14 0.0090
2014-05-14 2014-03-31 13F KLA Tencor COM 482480100 5,960 -11,230 -65.33 412 -62.82 0.0080
2014-02-12 2013-12-31 13F KLA Tencor COM 482480100 17,190 -2,000 -10.42 1,108 -5.14 0.0216
2013-11-14 2013-09-30 13F KLA Tencor COM 482480100 19,190 -1,500 -7.25 1,168 1.30 0.0242
2013-08-13 2013-06-30 13F KLA Tencor COM 482480100 20,690 20,690 1,153 0.0259
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.