KLA Corporation
MX ˙ BMV ˙ US4824801009
SecurityMX:KLAC / KLA Corporation
InstitutionTCG Advisory Services, LLC
Latest Disclosed Ownership7,121 shares
Latest Disclosed Value $ 10,484,791
TCG Advisory Services, LLC ownership in KLAC / KLA Corporation

On May 15, 2026 - TCG Advisory Services, LLC filed a 13F-HR form disclosing ownership of 7,121 shares of KLA Corporation (MX:KLAC) valued at $10,484,791 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 8,537 shares of KLA Corporation. This represents a change in shares of -16.59% during the quarter.

TCG Advisory Services, LLC 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 100 of underlying shares valued at $147,241 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.

MX: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 7,121 -1,416 -16.59 10,485 1.08 0.2507
2026-02-17 2025-12-31 13F KLA COM NEW 482480100 8,537 -52 -0.61 10,373 11.96 0.2685
2025-11-12 2025-09-30 13F KLA COM NEW 482480100 8,589 -5,441 -38.78 9,265 -26.28 0.3080
2025-08-14 2025-06-30 13F KLA COM NEW 482480100 14,030 -1,227 -8.04 12,567 21.16 0.4193
2025-05-15 2025-03-31 13F KLA COM NEW 482480100 15,257 5,982 64.50 10,372 77.46 0.4116
2025-02-11 2024-12-31 13F KLA COM NEW 482480100 9,275 -7 -0.08 5,844 -18.69 0.2448
2024-11-14 2024-09-30 13F KLA COM NEW 482480100 9,282 -49 -0.53 7,188 -6.58 0.3134
2024-08-09 2024-06-30 13F KLA COM NEW 482480100 9,331 -159 -1.68 7,694 16.05 0.2915
2024-05-10 2024-03-31 13F KLA COM NEW 482480100 9,490 -57 -0.60 6,629 19.46 0.3619
2024-02-06 2023-12-31 13F KLA COM NEW 482480100 9,547 9,087 1,975.43 5,550 2,542.38 0.3786
2023-11-14 2023-09-30 13F KLA COM NEW 482480100 460 460 211 0.0318
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 COM NEW Call 100 147 n/a n/a n/a
2026-02-17 2025-12-31 13F KLA COM NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-11-12 2025-09-30 13F KLA COM NEW Call 200 216 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.