ASML Holding N.V. - Depositary Receipt (Common Stock)
US ˙ NasdaqGS ˙ USN070592100

SecurityASML / ASML Holding N.V. - Depositary Receipt (Common Stock)
InstitutionTamar Securities, LLC
Latest Disclosed Ownership24,321 shares
Latest Disclosed Value $ 32,123,907
Tamar Securities, LLC ownership in ASML / ASML Holding N.V. - Depositary Receipt (Common Stock)

On May 14, 2026 - Tamar Securities, LLC filed a 13F-HR form disclosing ownership of 24,321 shares of ASML Holding N.V. - Depositary Receipt (Common Stock) (US:ASML) valued at $32,123,906 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 35,190 shares of ASML Holding N.V. - Depositary Receipt (Common Stock). This represents a change in shares of -30.89% during the quarter. The current value of the position is $42,728,592 USD.

Tamar Securities, LLC has a history of taking positions in derivatives of the underlying security (ASML) in the form of stock options.

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.

ASML / ASML Holding N.V. - Depositary Receipt (Common Stock) 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)
2026-05-14 2026-03-31 13F ASML HLDG N Y REGISTRY SHS N07059210 24,321 -10,869 -30.89 32,124 -14.68 3.4388
2026-02-13 2025-12-31 13F ASML HOLDING N V N Y REGISTRY SHS N07059210 35,190 -194 -0.55 37,648 9.91 3.9737
2025-11-14 2025-09-30 13F ASML HOLDING N V N Y REGISTRY SHS N07059210 35,384 955 2.77 34,255 24.15 3.8926
2025-08-11 2025-06-30 13F ASML HOLDING N V N Y REGISTRY SHS N07059210 34,429 427 1.26 27,591 22.46 3.3449
2025-05-15 2025-03-31 13F ASML HOLDING N V N Y REGISTRY SHS N07059210 34,002 6,681 24.45 22,531 18.99 3.0526
2025-01-22 2024-12-31 13F ASML HOLDING N V N Y REGISTRY SHS N07059210 27,321 4,470 19.56 18,936 -0.55 2.6116
2024-10-16 2024-09-30 13F ASML HOLDING N V N Y REGISTRY SHS N07059210 22,851 4,888 27.21 19,041 3.64 2.6747
2024-10-10 2024-06-30 13F ASML HOLDING N V N Y REGISTRY SHS N07059210 17,963 -758 -4.05 18,371 1.12 2.9779
2024-05-13 2024-03-31 13F ASML HOLDING N V N Y REGISTRY SHS N07059210 18,721 -1,416 -7.03 18,168 19.20 3.0650
2024-01-25 2023-12-31 13F ASML HOLDING N V N Y REGISTRY SHS N07059210 20,137 688 3.54 15,242 33.14 2.9911
2023-11-14 2023-09-30 13F ASML HOLDING N V N Y REGISTRY SHS N07059210 19,449 2,271 13.22 11,449 -8.04 2.7596
2024-10-10 2023-06-30 13F ASML HOLDING N V N Y REGISTRY SHS N07059210 17,178 955 5.89 12,450 12.73 3.0602
2024-10-10 2023-03-31 13F ASML HOLDING N V N Y REGISTRY SHS N07059210 16,223 -3,141 -16.22 11,043 4.38 3.1713
2023-02-10 2022-12-31 13F ASML HOLDING N V N Y REGISTRY SHS N07059210 19,364 2,756 16.59 10,580 53.38 3.3566
2022-11-07 2022-09-30 13F ASML HOLDING N V N Y REGISTRY SHS N07059210 16,608 4,288 34.81 6,898 17.65 2.2067
2022-08-05 2022-06-30 13F ASML HOLDING N V N Y REGISTRY SHS N07059210 12,320 1,838 17.53 5,863 -16.25 1.9247
2022-04-27 2022-03-31 13F ASML HOLDING N V N Y REGISTRY SHS N07059210 10,482 3,024 40.55 7,001 17.90 1.9540
2022-02-14 2021-12-31 13F ASML HOLDING N V N Y REGISTRY SHS N07059210 7,458 353 4.97 5,938 12.16 1.7497
2021-10-19 2021-09-30 13F ASML HOLDING N V N Y REGISTRY SHS N07059210 7,105 1,671 30.75 5,294 41.02 1.9125
2021-08-06 2021-06-30 13F ASML HOLDING N V N Y REGISTRY SHS N07059210 5,434 -137 -2.46 3,754 9.16 1.4451
2021-05-11 2021-03-31 13F ASML HOLDING N V N Y REGISTRY SHS N07059210 5,571 5,571 3,439 1.3300
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
(%)
2026-02-13 2025-12-31 13F ASML HOLDING N V N Y REGISTRY SHS Call 214 -44.96 n/a n/a n/a
2025-11-14 2025-09-30 13F ASML HOLDING N V N Y REGISTRY SHS Call 387 20.94 n/a n/a n/a
2025-08-11 2025-06-30 13F ASML HOLDING N V N Y REGISTRY SHS Call 321 20.75 n/a n/a n/a
2025-05-15 2025-03-31 13F ASML HOLDING N V N Y REGISTRY SHS Call 400 0.00 265 -4.33 n/a n/a n/a
2025-01-22 2024-12-31 13F ASML HOLDING N V N Y REGISTRY SHS Call 400 277 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.