KLA Corporation
US ˙ NasdaqGS ˙ US4824801009

SecurityKLAC / KLA Corporation
InstitutionAdvisor Group Holdings, Inc.
Latest Disclosed Ownership17,627 shares
Latest Disclosed Value $ 25,973,243
Advisor Group Holdings, Inc. ownership in KLAC / KLA Corporation

On May 15, 2026 - Advisor Group Holdings, Inc. filed a 13F-HR form disclosing ownership of 17,627 shares of KLA Corporation (US:KLAC) valued at $25,954,171 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 21,355 shares of KLA Corporation. This represents a change in shares of -17.46% during the quarter. The current value of the position is $37,459,314 USD.

Advisor Group Holdings, Inc. has a history of taking positions in derivatives of the underlying security (KLAC) in the form of stock options. The firm currently holds call 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.

KLAC / 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)
2026-05-15 2026-03-31 13F KLA COM NEW 482480100 17,627 -3,728 -17.46 25,973 0.03 0.0221
2026-02-17 2025-12-31 13F KLA COM NEW 482480100 21,355 -14,100 -39.77 25,966 -27.59 0.0379
2025-11-14 2025-09-30 13F KLA COM NEW 482480100 35,455 2,479 7.52 35,858 35.88 0.0502
2025-09-04 2025-06-30 13F/A-1 LA COM NEW 482480100 32,976 17,605 114.53 26,390 152.41 0.0470
2025-08-13 2025-06-30 13F LA COM NEW 482480100 30,188 14,817 20,829 0.0241
2025-05-12 2025-03-31 13F KLA COM NEW 482480100 15,371 -16,003 -51.01 10,456 -14.52 0.0233
2025-06-06 2024-12-31 13F/A-1 KLA COM NEW 482480100 31,374 4,794 18.04 12,231 -40.59 0.0275
2025-02-07 2024-12-31 13F KLA COM NEW 482480100 35,216 8,636 16,867 0.0430
2024-11-13 2024-09-30 13F KLA COM NEW 482480100 26,580 -4,752 -15.17 20,586 -20.33 0.0464
2024-08-13 2024-06-30 13F KLA COM NEW 482480100 31,332 4,023 14.73 25,840 35.50 0.0611
2024-05-10 2024-03-31 13F KLA COM NEW 482480100 27,309 -25,435 -48.22 19,070 -37.84 0.0426
2024-02-12 2023-12-31 13F KLA COM NEW 482480100 52,744 -23,245 -30.59 30,679 -12.01 0.0537
2023-11-13 2023-09-30 13F KLA COM NEW 482480100 75,989 32,586 75.08 34,868 65.85 0.0515
2023-08-21 2023-06-30 13F/A-1 KLA COM NEW 482480100 43,403 1,410 3.36 21,025 25.50 0.0377
2023-08-10 2023-06-30 13F KLA COM NEW 482480100 49,695 7,702 21,018 0.0057
2023-05-12 2023-03-31 13F KLA COM NEW 482480100 41,993 -811 -1.89 16,752 3.73 0.0315
2023-02-10 2022-12-31 13F KLA COM NEW 482480100 42,804 3,402 8.63 16,150 35.34 0.0327
2022-11-14 2022-09-30 13F KLA COM NEW 482480100 39,402 2,198 5.91 11,932 0.73 0.0273
2022-08-10 2022-06-30 13F KLA COM NEW 482480100 37,204 -8,670 -18.90 11,846 -27.52 0.0261
2022-05-04 2022-03-31 13F KLA COM NEW 482480100 45,874 -1,949 -4.08 16,344 -20.63 0.0317
2022-02-03 2021-12-31 13F KLA COM NEW 482480100 47,823 5,647 13.39 20,593 45.90 0.0390
2021-11-05 2021-09-30 13F KLA COM NEW 482480100 42,176 1,840 4.56 14,114 8.19 0.0294
2021-08-02 2021-06-30 13F KLA COM NEW 482480100 40,336 1,962 5.11 13,045 2.71 0.0282
2021-05-13 2021-03-31 13F KLA COM NEW 482480100 38,374 1,471 3.99 12,701 32.91 0.0306
2021-02-10 2020-12-31 13F KLA COM NEW 482480100 36,903 5,886 18.98 9,556 58.95 0.0255
2020-11-12 2020-09-30 13F KLA COM NEW 482480100 31,017 -7,605 -19.69 6,012 -19.94 0.0180
2020-08-14 2020-06-30 13F KLA COM NEW 482480100 38,622 -264,844 -87.27 7,509 62.67 0.0252
2020-05-18 2020-03-31 13F KLA COM NEW 482480100 303,466 303,466 4,616 0.0189
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
(%)
2026-05-15 2026-03-31 13F KLA CALL Call 0 -100.00 0 -100.00 n/a n/a n/a
2026-02-17 2025-12-31 13F KLA CALL Call 1 0.00 71 91.89 n/a n/a n/a
2025-11-14 2025-09-30 13F KLA CALL Call 1 0.00 38 -7.50 n/a n/a n/a
2025-09-04 2025-06-30 13F/A KLA CALL Call 1 0.00 40 90.48 n/a n/a n/a
2025-08-13 2025-06-30 13F KLA CALL Call 1 18 n/a n/a n/a
2025-05-12 2025-03-31 13F KLA CALL Call 1 0.00 21 23.53 n/a n/a n/a
2025-06-06 2024-12-31 13F/A KLA CALL Call 1 0.00 18 -45.16 n/a n/a n/a
2025-02-07 2024-12-31 13F KLA CALL Call 1 32 n/a n/a n/a
2024-11-13 2024-09-30 13F KLA CALL Call 1 0.00 32 -13.89 n/a n/a n/a
2024-08-13 2024-06-30 13F KLA CALL Call 1 0.00 37 44.00 n/a n/a n/a
2024-05-10 2024-03-31 13F KLA CALL Call 1 0.00 26 56.25 n/a n/a n/a
2024-02-12 2023-12-31 13F KLA CORP CALL COM NEW Call 1 0.00 16 -11.11 n/a n/a n/a
2023-11-13 2023-09-30 13F KLA CORP CALL COM NEW Call 1 0.00 19 -14.29 n/a n/a n/a
2023-08-21 2023-06-30 13F/A KLA CORP CALL COM NEW Call 1 0.00 21 61.54 n/a n/a n/a
2023-08-10 2023-06-30 13F KLA CORP CALL COM NEW Call 1 21 n/a n/a n/a
2023-05-12 2023-03-31 13F KLA CORP CALL COM NEW Call 1 0.00 14 0.00 n/a n/a n/a
2023-02-10 2022-12-31 13F KLA CORP CALL COM NEW Call 1 13 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.