KLA Corporation
MX ˙ BMV ˙ US4824801009
SecurityMX:KLAC / KLA Corporation
InstitutionToroso Investments, LLC
Latest Disclosed Ownership110,394 shares
Latest Disclosed Value $ 162,545,230
Toroso Investments, LLC ownership in KLAC / KLA Corporation

On May 15, 2026 - Toroso Investments, LLC filed a 13F-HR form disclosing ownership of 110,394 shares of KLA Corporation (MX:KLAC) valued at $162,545,230 USD as of March 31, 2026.

Toroso Investments, 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 15,000 of underlying shares valued at $22,086,150 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 110,394 -7,981 -6.74 162,545 13.01 0.2565
2026-02-13 2025-12-31 13F KLA COM NEW 482480100 118,375 27,858 30.78 143,835 47.33 0.3413
2025-11-14 2025-09-30 13F KLA COM NEW 482480100 90,517 33,790 59.57 97,632 92.14 0.1953
2025-08-14 2025-06-30 13F KLA COM NEW 482480100 56,727 46,701 465.80 50,813 645.59 0.3054
2025-05-14 2025-03-31 13F KLA COM NEW 482480100 10,026 -2,564 -20.37 6,816 -14.09 0.0554
2025-02-14 2024-12-31 13F KLA COM NEW 482480100 12,590 -24,521 -66.07 7,933 -72.40 0.0624
2024-11-25 2024-09-30 13F/A-1 KLA COM NEW 482480100 37,111 28,224 317.59 28,739 292.23 0.3038
2024-11-14 2024-09-30 13F KLA COM NEW 482480100 37,111 28,224 28,739 0.1966
2024-08-14 2024-06-30 13F KLA COM NEW 482480100 8,887 2,063 30.23 7,327 53.77 0.0985
2024-05-16 2024-03-31 13F KLA COM NEW 482480100 6,824 577 9.24 4,766 31.23 0.0787
2024-02-15 2023-12-31 13F KLA COM NEW 482480100 6,247 -1,277 -16.97 3,631 5.25 0.0845
2023-11-15 2023-09-30 13F KLA COM NEW 482480100 7,524 798 11.86 3,451 114,900.00 0.1050
2023-08-14 2023-06-30 13F KLA COM NEW 482480100 6,726 239 3.68 3 50.00 0.0959
2023-05-23 2023-03-31 13F/A-1 KLA COM NEW 482480100 6,487 1,814 38.82 3 -99.89 0.0852
2023-05-15 2023-03-31 13F KLA COM NEW 482480100 6,487 1,814 3 0.0919
2023-02-15 2022-12-31 13F KLA COM NEW 482480100 4,673 440 10.39 1,762 37.55 0.0677
2022-11-23 2022-09-30 13F KLA COM NEW 482480100 4,233 134 3.27 1,281 -2.06 0.0532
2022-08-15 2022-06-30 13F KLA COM NEW 482480100 4,099 -1,475 -26.46 1,308 -35.88 0.0479
2022-05-20 2022-03-31 13F KLA COM NEW 482480100 5,574 1,887 51.18 2,040 28.63 0.0608
2022-02-16 2021-12-31 13F KLA COM NEW 482480100 3,687 463 14.36 1,586 46.99 0.0486
2021-11-15 2021-09-30 13F KLA COM NEW 482480100 3,224 943 41.34 1,079 45.81 0.0404
2021-08-13 2021-06-30 13F KLA COM NEW 482480100 2,281 1,034 82.92 740 79.61 0.0289
2021-05-17 2021-03-31 13F KLA COM NEW 482480100 1,247 264 26.86 412 61.57 0.0193
2021-02-16 2020-12-31 13F KLA COM NEW 482480100 983 983 255 0.0176
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 15,000 1,263.64 22,086 1,553.14 n/a n/a n/a
2026-02-13 2025-12-31 13F KLA COM NEW Call 1,100 1,337 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.