KLA Corporation
GB ˙ LSE ˙ US4824801009
2.142,21 $ ↑23,10 (1,09%)
2026-06-04
AKTIENPREIS
SecurityGB:0JPO / KLA Corporation
InstitutionCitigroup Inc
Latest Disclosed Ownership388,256 shares
Latest Disclosed Value $ 571,672,248
Citigroup Inc ownership in 0JPO / KLA Corporation

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 388,256 shares of KLA Corporation (GB:0JPO) valued at $566,465,504 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 378,289 shares of KLA Corporation. This represents a change in shares of 2.63% during the quarter. The current value of the position is $831,725,886 USD.

Citigroup Inc has a history of taking positions in derivatives of the underlying security (0JPO) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

GB:0JPO / KLA Corporation Historical Put/Call Ratio
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)
2026-05-11 2026-03-31 13F KLA COM NEW 482480100 388,256 9,967 2.63 571,672 24.37 0.2437
2026-02-13 2025-12-31 13F KLA COM NEW 482480100 378,289 -131,880 -25.85 459,652 -16.47 0.2029
2025-11-10 2025-09-30 13F KLA COM NEW 482480100 510,169 -45,240 -8.15 550,269 10.61 0.2453
2025-08-11 2025-06-30 13F KLA COM NEW 482480100 555,409 90,760 19.53 497,502 57.50 0.2444
2025-05-12 2025-03-31 13F KLA COM NEW 482480100 464,649 -26,576 -5.41 315,869 2.05 0.1614
2025-02-12 2024-12-31 13F KLA COM NEW 482480100 491,225 681 0.14 309,531 -18.52 0.1836
2024-11-12 2024-09-30 13F KLA COM NEW 482480100 490,544 -8,767 -1.76 379,882 -7.73 0.2200
2024-08-12 2024-06-30 13F KLA COM NEW 482480100 499,311 107,612 27.47 411,687 50.45 0.2637
2024-05-10 2024-03-31 13F KLA COM NEW 482480100 391,699 141,887 56.80 273,629 88.43 0.1797
2024-02-09 2023-12-31 13F KLA COM NEW 482480100 249,812 -29,224 -10.47 145,216 13.47 0.1023
2023-12-06 2023-09-30 13F/A-1 KLA COM NEW 482480100 279,036 -5,275 -1.86 127,983 -7.19 0.0957
2023-11-09 2023-09-30 13F KLA COM NEW 482480100 279,036 -5,275 127,983 0.0382
2023-08-10 2023-06-30 13F KLA COM NEW 482480100 284,311 54,279 23.60 137,897 50.18 0.0904
2023-05-11 2023-03-31 13F KLA COM NEW 482480100 230,032 12,892 5.94 91,822 12.16 0.0644
2023-02-09 2022-12-31 13F KLA COM NEW 482480100 217,140 -271,076 -55.52 81,868 -44.59 0.0652
2022-11-10 2022-09-30 13F KLA COM NEW 482480100 488,216 333,115 214.77 147,749 198.54 0.1057
2022-08-10 2022-06-30 13F KLA COM NEW 482480100 155,101 -323,398 -67.59 49,491 -71.75 0.0368
2022-05-12 2022-03-31 13F KLA COM NEW 482480100 478,499 295 0.06 175,160 -14.84 0.1065
2022-02-10 2021-12-31 13F KLA COM NEW 482480100 478,204 -7,889 -1.62 205,681 26.49 0.1102
2021-11-10 2021-09-30 13F KLA COM NEW 482480100 486,093 80,374 19.81 162,603 23.62 0.0960
2021-08-10 2021-06-30 13F KLA COM NEW 482480100 405,719 -33,802 -7.69 131,538 -9.42 0.0792
2021-05-13 2021-03-31 13F KLA COM NEW 482480100 439,521 212,452 93.56 145,218 147.01 0.0939
2021-02-11 2020-12-31 13F KLA COM NEW 482480100 227,069 -22,809 -9.13 58,791 21.44 0.0347
2020-11-12 2020-09-30 13F KLA COM NEW 482480100 249,878 69,274 38.36 48,412 37.84 0.0316
2020-08-12 2020-06-30 13F KLA COM NEW 482480100 180,604 59,143 48.69 35,123 101.19 0.0274
2020-05-12 2020-03-31 13F KLA COM NEW 482480100 121,461 -8,711 -6.69 17,458 -24.72 0.0158
2020-02-12 2019-12-31 13F KLA COM NEW 482480100 130,172 -45,494 -25.90 23,192 -17.20 0.0168
2019-11-08 2019-09-30 13F KLA COM NEW 482480100 175,666 8,153 4.87 28,010 41.46 0.0222
2019-08-12 2019-06-30 13F KLA-TENCOR COM 482480100 167,513 36,222 27.59 19,801 26.31 0.0160
2019-05-13 2019-03-31 13F KLA-TENCOR COM 482480100 131,291 -4,858 -3.57 15,677 28.67 0.0151
2019-02-12 2018-12-31 13F KLA-TENCOR COM 482480100 136,149 85,420 168.38 12,184 136.08 0.0123
2018-11-13 2018-09-30 13F KLA-TENCOR COM 482480100 50,729 -7,487 -12.86 5,161 -13.52 0.0046
2018-08-10 2018-06-30 13F KLA-TENCOR COM 482480100 58,216 -41,206 -41.45 5,968 -44.93 0.0055
2018-05-11 2018-03-31 13F KLA-TENCOR COM 482480100 99,422 28,095 39.39 10,837 44.59 0.0089
2018-02-12 2017-12-31 13F KLA-TENCOR COM 482480100 71,327 61,271 609.30 7,495 602.44 0.0060
2017-11-13 2017-09-30 13F KLA-TENCOR COM 482480100 10,056 -36,315 -78.31 1,067 -74.85 0.0009
2017-08-11 2017-06-30 13F KLA-TENCOR COM 482480100 46,371 -7,633 -14.13 4,243 -17.35 0.0038
2017-05-12 2017-03-31 13F KLA-TENCOR COM 482480100 54,004 -48,733 -47.43 5,134 -36.48 0.0046
2017-02-10 2016-12-31 13F KLA-TENCOR COM 482480100 102,737 -3,587,518 -97.22 8,083 -96.86 0.0073
2016-11-10 2016-09-30 13F KLA-TENCOR COM 482480100 3,690,255 -2,853,191 -43.60 257,249 -46.33 0.2404
2016-08-12 2016-06-30 13F KLA-TENCOR COM 482480100 6,543,446 -211,364 -3.13 479,307 -2.54 0.4893
2016-05-13 2016-03-31 13F KLA-TENCOR COM 482480100 6,754,810 6,301,429 1,389.87 491,817 1,464.20 0.5524
2016-02-12 2015-12-31 13F KLA-TENCOR COM 482480100 453,381 370,151 444.73 31,442 655.64 0.0313
2015-11-13 2015-09-30 13F KLA-TENCOR COM 482480100 83,230 -507,161 -85.90 4,161 -87.46 0.0039
2015-08-13 2015-06-30 13F KLA-TENCOR COM 482480100 590,391 -5,191 -0.87 33,186 -4.41 0.0295
2015-05-14 2015-03-31 13F KLA-TENCOR COM 482480100 595,582 64,011 12.04 34,716 -7.13 0.0336
2015-02-17 2014-12-31 13F KLA-TENCOR COM 482480100 531,571 132,726 33.28 37,380 18.97 0.0334
2014-11-14 2014-09-30 13F KLA-TENCOR COM 482480100 398,845 186,176 87.54 31,421 103.40 0.0275
2014-08-14 2014-06-30 13F KLA-TENCOR COM 482480100 212,669 66,426 45.42 15,448 52.80 0.0148
2014-05-15 2014-03-31 13F KLA-TENCOR COM 482480100 146,243 -29,072 -16.58 10,110 -10.53 0.0103
2014-02-14 2013-12-31 13F KLA-TENCOR COM 482480100 175,315 3,794 2.21 11,300 8.26 0.0102
2013-11-14 2013-09-30 13F KLA-TENCOR COM 482480100 171,521 -44,926 -20.76 10,438 -13.47 0.0098
2013-08-14 2013-06-30 13F KLA-TENCOR COM 482480100 216,447 216,447 12,063 0.0119
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-11 2026-03-31 13F KLA COM NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2026-02-13 2025-12-31 13F KLA COM NEW Call 6,000 0.00 7,290 12.66 n/a n/a n/a
2025-11-10 2025-09-30 13F KLA COM NEW Call 6,000 6,472 n/a n/a n/a
2024-05-10 2024-03-31 13F KLA COM NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-09 2023-12-31 13F KLA COM NEW Call 3,300 0.00 1,918 26.77 n/a n/a n/a
2023-12-06 2023-09-30 13F/A KLA COM NEW Call 3,300 0.00 1,514 -5.44 n/a n/a n/a
2023-11-09 2023-09-30 13F KLA COM NEW Call 3,300 1,514 n/a n/a n/a
2023-08-10 2023-06-30 13F KLA COM NEW Call 3,300 0.00 1,601 21.49 n/a n/a n/a
2023-05-11 2023-03-31 13F KLA COM NEW Call 3,300 1,317 n/a n/a n/a
2021-05-13 2021-03-31 13F KLA COM NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-11 2020-12-31 13F KLA COM NEW Call 12,200 41.86 3,159 89.62 n/a n/a n/a
2020-11-12 2020-09-30 13F KLA COM NEW Call 8,600 -21.10 1,666 -21.42 n/a n/a n/a
2020-08-12 2020-06-30 13F KLA COM NEW Call 10,900 -70.78 2,120 -60.46 n/a n/a n/a
2020-05-12 2020-03-31 13F KLA COM NEW Call 37,300 -38.75 5,362 -50.59 n/a n/a n/a
2020-02-12 2019-12-31 13F KLA COM NEW Call 60,900 -5.29 10,851 5.84 n/a n/a n/a
2019-11-08 2019-09-30 13F KLA COM NEW Call 64,300 176.86 10,252 273.48 n/a n/a n/a
2019-08-12 2019-06-30 13F KLA-TENCOR COM Call 23,225 6.90 2,745 5.82 n/a n/a n/a
2019-05-13 2019-03-31 13F KLA-TENCOR COM Call 21,725 144.10 2,594 225.88 n/a n/a n/a
2019-02-12 2018-12-31 13F KLA-TENCOR COM Call 8,900 11.25 796 -2.21 n/a n/a n/a
2018-11-13 2018-09-30 13F KLA-TENCOR COM Call 8,000 -58.33 814 -58.66 n/a n/a n/a
2018-08-10 2018-06-30 13F KLA-TENCOR COM Call 19,200 79.44 1,969 68.87 n/a n/a n/a
2018-05-11 2018-03-31 13F KLA-TENCOR COM Call 10,700 -78.90 1,166 -78.11 n/a n/a n/a
2018-02-12 2017-12-31 13F KLA-TENCOR COM Call 50,700 1.81 5,327 0.91 n/a n/a n/a
2017-11-13 2017-09-30 13F KLA-TENCOR COM Call 49,800 6.41 5,279 23.25 n/a n/a n/a
2017-08-11 2017-06-30 13F KLA-TENCOR COM Call 46,800 -10.34 4,283 -13.70 n/a n/a n/a
2017-05-12 2017-03-31 13F KLA-TENCOR COM Call 52,200 -26.79 4,963 -11.53 n/a n/a n/a
2017-02-10 2016-12-31 13F KLA-TENCOR COM Call 71,300 -4.93 5,610 7.31 n/a n/a n/a
2016-11-10 2016-09-30 13F KLA-TENCOR COM Call 75,000 230.40 5,228 214.37 n/a n/a n/a
2016-08-12 2016-06-30 13F KLA-TENCOR COM Call 22,700 -31.21 1,663 -30.79 n/a n/a n/a
2016-05-13 2016-03-31 13F KLA-TENCOR COM Call 33,000 -75.39 2,403 -74.16 n/a n/a n/a
2016-02-12 2015-12-31 13F KLA-TENCOR COM Call 134,100 -16.50 9,300 15.82 n/a n/a n/a
2015-11-13 2015-09-30 13F KLA-TENCOR COM Call 160,600 22.97 8,030 9.39 n/a n/a n/a
2015-08-13 2015-06-30 13F KLA-TENCOR COM Call 130,600 -17.45 7,341 -20.39 n/a n/a n/a
2015-05-14 2015-03-31 13F KLA-TENCOR COM Call 158,200 -25.02 9,221 -37.86 n/a n/a n/a
2015-02-17 2014-12-31 13F KLA-TENCOR COM Call 211,000 128.35 14,838 103.85 n/a n/a n/a
2014-11-14 2014-09-30 13F KLA-TENCOR COM Call 92,400 116.90 7,279 135.26 n/a n/a n/a
2014-08-14 2014-06-30 13F KLA-TENCOR COM Call 42,600 -52.88 3,094 -50.50 n/a n/a n/a
2014-05-15 2014-03-31 13F KLA-TENCOR COM Call 90,400 -23.52 6,250 -17.97 n/a n/a n/a
2014-02-14 2013-12-31 13F KLA-TENCOR COM Call 118,200 -40.57 7,619 -37.05 n/a n/a n/a
2013-11-14 2013-09-30 13F KLA-TENCOR COM Call 198,900 206.00 12,103 234.15 n/a n/a n/a
2013-08-14 2013-06-30 13F KLA-TENCOR COM Call 65,000 3,622 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-11 2026-03-31 13F KLA COM NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2026-02-13 2025-12-31 13F KLA COM NEW Put 15,000 0.00 18,226 12.65 n/a n/a n/a
2025-11-10 2025-09-30 13F KLA COM NEW Put 15,000 0.00 16,179 20.42 n/a n/a n/a
2025-08-11 2025-06-30 13F KLA COM NEW Put 15,000 13,436 n/a n/a n/a
2024-05-10 2024-03-31 13F KLA COM NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-09 2023-12-31 13F KLA COM NEW Put 5,600 0.00 3,255 26.75 n/a n/a n/a
2023-12-06 2023-09-30 13F/A KLA COM NEW Put 5,600 0.00 2,568 -5.45 n/a n/a n/a
2023-11-09 2023-09-30 13F KLA COM NEW Put 5,600 2,568 n/a n/a n/a
2023-08-10 2023-06-30 13F KLA COM NEW Put 5,600 0.00 2,716 21.52 n/a n/a n/a
2023-05-11 2023-03-31 13F KLA COM NEW Put 5,600 2,235 n/a n/a n/a
2021-05-13 2021-03-31 13F KLA COM NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-11 2020-12-31 13F KLA COM NEW Put 10,000 -20.00 2,589 6.90 n/a n/a n/a
2020-11-12 2020-09-30 13F KLA COM NEW Put 12,500 -3.10 2,422 -3.47 n/a n/a n/a
2020-08-12 2020-06-30 13F KLA COM NEW Put 12,900 -33.85 2,509 -10.49 n/a n/a n/a
2020-05-12 2020-03-31 13F KLA COM NEW Put 19,500 -78.36 2,803 -82.54 n/a n/a n/a
2020-02-12 2019-12-31 13F KLA COM NEW Put 90,100 65.93 16,054 85.42 n/a n/a n/a
2019-11-08 2019-09-30 13F KLA COM NEW Put 54,300 -64.16 8,658 -51.65 n/a n/a n/a
2019-08-12 2019-06-30 13F KLA-TENCOR COM Put 151,500 84.25 17,907 82.37 n/a n/a n/a
2019-05-13 2019-03-31 13F KLA-TENCOR COM Put 82,225 1,857.74 9,819 2,511.44 n/a n/a n/a
2019-02-12 2018-12-31 13F KLA-TENCOR COM Put 4,200 -78.57 376 -81.14 n/a n/a n/a
2018-11-13 2018-09-30 13F KLA-TENCOR COM Put 19,600 66.10 1,994 64.79 n/a n/a n/a
2018-08-10 2018-06-30 13F KLA-TENCOR COM Put 11,800 43.90 1,210 35.35 n/a n/a n/a
2018-05-11 2018-03-31 13F KLA-TENCOR COM Put 8,200 20.59 894 25.21 n/a n/a n/a
2018-02-12 2017-12-31 13F KLA-TENCOR COM Put 6,800 -38.18 714 -38.77 n/a n/a n/a
2017-11-13 2017-09-30 13F KLA-TENCOR COM Put 11,000 18.28 1,166 37.02 n/a n/a n/a
2017-08-11 2017-06-30 13F KLA-TENCOR COM Put 9,300 -4.12 851 -7.70 n/a n/a n/a
2017-05-12 2017-03-31 13F KLA-TENCOR COM Put 9,700 -96.63 922 -95.93 n/a n/a n/a
2017-02-10 2016-12-31 13F KLA-TENCOR COM Put 287,700 345.36 22,636 402.69 n/a n/a n/a
2016-11-10 2016-09-30 13F KLA-TENCOR COM Put 64,600 79.44 4,503 70.76 n/a n/a n/a
2016-08-12 2016-06-30 13F KLA-TENCOR COM Put 36,000 4.96 2,637 5.61 n/a n/a n/a
2016-05-13 2016-03-31 13F KLA-TENCOR COM Put 34,300 -56.91 2,497 -54.76 n/a n/a n/a
2016-02-12 2015-12-31 13F KLA-TENCOR COM Put 79,600 14.04 5,520 58.17 n/a n/a n/a
2015-11-13 2015-09-30 13F KLA-TENCOR COM Put 69,800 25.31 3,490 11.47 n/a n/a n/a
2015-08-13 2015-06-30 13F KLA-TENCOR COM Put 55,700 0.54 3,131 -3.03 n/a n/a n/a
2015-05-14 2015-03-31 13F KLA-TENCOR COM Put 55,400 -38.10 3,229 -48.70 n/a n/a n/a
2015-02-17 2014-12-31 13F KLA-TENCOR COM Put 89,500 -6.09 6,294 -16.17 n/a n/a n/a
2014-11-14 2014-09-30 13F KLA-TENCOR COM Put 95,300 22.18 7,508 32.51 n/a n/a n/a
2014-08-14 2014-06-30 13F KLA-TENCOR COM Put 78,000 36.60 5,666 43.52 n/a n/a n/a
2014-05-15 2014-03-31 13F KLA-TENCOR COM Put 57,100 -62.85 3,948 -60.15 n/a n/a n/a
2014-02-14 2013-12-31 13F KLA-TENCOR COM Put 153,700 -0.58 9,908 5.33 n/a n/a n/a
2013-11-14 2013-09-30 13F KLA-TENCOR COM Put 154,600 132.13 9,407 153.42 n/a n/a n/a
2013-08-14 2013-06-30 13F KLA-TENCOR COM Put 66,600 3,712 n/a n/a n/a
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.