KLA Corporation
US ˙ NasdaqGS ˙ US4824801009

SecurityKLAC / KLA Corporation
InstitutionCookson Peirce & Co Inc
Latest Disclosed Ownership1,532 shares
Latest Disclosed Value $ 2,255,903
Cookson Peirce & Co Inc reports 131.77% increase in ownership of KLAC / KLA Corporation

On April 30, 2026 - Cookson Peirce & Co Inc filed a 13F-HR form disclosing ownership of 1,532 shares of KLA Corporation (US:KLAC) valued at $2,255,732 USD as of March 31, 2026. The current value of the position is $3,264,845 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-04-30 2026-03-31 13F KLA COM NEW 482480100 1,532 871 131.77 2,256 180.82 0.0955
2026-02-11 2025-12-31 13F KLA COM NEW 482480100 661 152 29.86 803 46.27 0.0333
2025-11-06 2025-09-30 13F KLA COM NEW 482480100 509 230 82.44 549 120.48 0.0225
2025-07-30 2025-06-30 13F KLA COM NEW 482480100 279 -1,004 -78.25 250 -71.44 0.0110
2025-05-13 2025-03-31 13F KLA COM NEW 482480100 1,283 -282 -18.02 872 -11.56 0.0439
2025-02-06 2024-12-31 13F KLA COM NEW 482480100 1,565 -139,977 -98.89 986 -99.10 0.0447
2024-11-12 2024-09-30 13F KLA COM NEW 482480100 141,542 -2,986 -2.07 109,612 -8.02 5.1379
2024-08-14 2024-06-30 13F KLA COM NEW 482480100 144,528 10,063 7.48 119,165 128,033.33 5.7332
2024-04-23 2024-03-31 13F KLA-TENCOR CS 482480100 134,465 -1,130 -0.83 94 19.23 5.0141
2024-01-30 2023-12-31 13F/A-1 KLA-TENCOR CS 482480100 135,595 -2,681 -1.94 79 23.81 4.7657
2024-01-30 2023-12-31 13F KLA-TENCOR CS 482480100 135,595 -2,681 79 4.7657
2023-11-07 2023-09-30 13F KLA-TENCOR CS 482480100 138,276 465 0.34 63 -4.55 4.1568
2023-08-01 2023-06-30 13F KLA-TENCOR CS 482480100 137,811 -2,039 -1.46 67 20.00 4.0796
2023-05-03 2023-03-31 13F KLA-TENCOR CS 482480100 139,850 14,081 11.20 56 17.02 3.5769
2023-01-31 2022-12-31 13F KLA-TENCOR CS 482480100 125,769 634 0.51 47 -99.88 3.0830
2022-11-08 2022-09-30 13F KLA-TENCOR CS 482480100 125,135 1,111 0.90 37,870 -4.31 2.6697
2022-07-20 2022-06-30 13F KLA-TENCOR CS 482480100 124,024 122,012 6,064.21 39,574 5,269.61 2.7245
2022-05-03 2022-03-31 13F KLA-TENCOR CS 482480100 2,012 -707 -26.00 737 -36.95 0.0430
2022-01-31 2021-12-31 13F KLA-TENCOR CS 482480100 2,719 -14 -0.51 1,169 27.90 0.0651
2021-11-04 2021-09-30 13F KLA-TENCOR CS 482480100 2,733 -72,022 -96.34 914 -96.23 0.0557
2021-08-03 2021-06-30 13F KLA-TENCOR CS 482480100 74,755 -130,684 -63.61 24,236 -64.29 1.5054
2021-05-11 2021-03-31 13F KLA-TENCOR CS 482480100 205,439 4,767 2.38 67,877 30.64 4.4490
2021-02-10 2020-12-31 13F KLA-TENCOR CS 482480100 200,672 -4,771 -2.32 51,956 30.53 3.5324
2020-11-04 2020-09-30 13F KLA-TENCOR CS 482480100 205,443 23,717 13.05 39,803 12.62 2.9908
2020-08-07 2020-06-30 13F KLA-TENCOR CS 482480100 181,726 -4,551 -2.44 35,342 32.00 3.3209
2020-05-04 2020-03-31 13F KLA-TENCOR CS 482480100 186,277 -20,714 -10.01 26,775 -27.40 3.0756
2020-01-27 2019-12-31 13F KLA-TENCOR CS 482480100 206,991 -1,919 -0.92 36,880 10.71 3.2518
2019-11-05 2019-09-30 13F KLA-TENCOR CS 482480100 208,910 181,980 675.75 33,311 946.53 2.9103
2019-07-31 2019-06-30 13F KLA-TENCOR CS 482480100 26,930 26,930 3,183 0.2678
2018-07-26 2018-06-30 13F KLA-TENCOR CS 482480100 0 -10,300 -100.00 0 -100.00
2018-05-01 2018-03-31 13F KLA-TENCOR CS 482480100 10,300 1,920 22.91 1,123 27.61 0.1017
2018-02-12 2017-12-31 13F KLA-TENCOR CS 482480100 8,380 14 0.17 880 -0.79 0.0824
2017-11-13 2017-09-30 13F KLA-TENCOR CS 482480100 8,366 -190,838 -95.80 887 -95.13 0.0917
2017-08-17 2017-06-30 13F KLA-TENCOR CS 482480100 199,204 -1,366 -0.68 18,229 -4.40 2.0548
2017-04-28 2017-03-31 13F KLA-TENCOR CS 482480100 200,570 10,270 5.40 19,068 27.35 2.3112
2017-02-07 2016-12-31 13F KLA-TENCOR CS 482480100 190,300 -3,815 -1.97 14,973 10.65 2.0718
2016-11-15 2016-09-30 13F KLA-TENCOR CS 482480100 194,115 15,500 8.68 13,532 3.42 1.9101
2016-08-03 2016-06-30 13F KLA-TENCOR CS 482480100 178,615 -495 -0.28 13,084 0.33 1.9450
2016-05-04 2016-03-31 13F KLA-TENCOR CS 482480100 179,110 179,110 0.00 13,041 2.0581
2016-01-27 2015-12-31 13F KLA-TENCOR CS 482480100 0 0 0 0.0000
2015-08-11 2015-06-30 13F KLA-TENCOR CS 482480100 0 -14,550 -100.00 0 -100.00
2015-05-06 2015-03-31 13F KLA-TENCOR CS 482480100 14,550 -21,285 -59.40 848 -66.35 0.1482
2015-02-06 2014-12-31 13F KLA-TENCOR CS 482480100 35,835 3,705 11.53 2,520 -0.43 0.5225
2014-11-12 2014-09-30 13F KLA-TENCOR CS 482480100 32,130 27,310 566.60 2,531 623.14 0.5907
2014-08-14 2014-06-30 13F KLA-TENCOR CS 482480100 4,820 4,820 350 0.0838
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.