argenx SE - Depositary Receipt (Common Stock)
US ˙ NasdaqGS ˙ US04016X1019

SecurityARGX / argenx SE - Depositary Receipt (Common Stock)
InstitutionSquarepoint Ops LLC
Latest Disclosed Ownership18,679 shares
Latest Disclosed Value $ 13,640,340
Squarepoint Ops LLC ownership in ARGX / argenx SE - Depositary Receipt (Common Stock)

On May 15, 2026 - Squarepoint Ops LLC filed a 13F-HR form disclosing ownership of 18,679 shares of argenx SE - Depositary Receipt (Common Stock) (US:ARGX) valued at $13,640,340 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 28,202 shares of argenx SE - Depositary Receipt (Common Stock). This represents a change in shares of -33.77% during the quarter. The current value of the position is $15,188,642 USD.

Squarepoint Ops LLC has a history of taking positions in derivatives of the underlying security (ARGX) in the form of stock options. The firm currently holds call options representing 900 of underlying shares valued at $657,225 USD and put options representing 5,500 of underlying shares valued at $4,016,375 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.

ARGX / argenx SE - 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)
2026-05-15 2026-03-31 13F ARGENX SE SPONSORED ADR 04016X101 18,679 -9,523 -33.77 13,640 -42.49 0.0160
2026-02-13 2025-12-31 13F ARGENX SE SPONSORED ADR 04016X101 28,202 9,217 48.55 23,716 69.38 0.0252
2025-11-14 2025-09-30 13F ARGENX SE SPONSORED ADR 04016X101 18,985 -12,311 -39.34 14,003 -18.83 0.0141
2025-08-27 2025-06-30 13F/A-1 ARGENX SE SPONSORED ADR 04016X101 31,296 875 2.88 17,251 -4.19 0.0179
2025-08-14 2025-06-30 13F ARGENX SE SPONSORED ADR 04016X101 31,296 875 17,251 0.0179
2025-08-27 2025-03-31 13F/A-1 ARGENX SE SPONSORED ADR 04016X101 30,421 7,757 34.23 18,005 29.18 0.0219
2025-05-15 2025-03-31 13F ARGENX SE SPONSORED ADR 04016X101 30,421 7,757 18,005 0.0219
2025-02-14 2024-12-31 13F ARGENX SE SPONSORED ADR 04016X101 22,664 4,264 23.17 13,938 39.74 0.0137
2024-11-14 2024-09-30 13F ARGENX SE SPONSORED ADR 04016X101 18,400 -23,092 -55.65 9,974 -44.10 0.0156
2024-08-14 2024-06-30 13F ARGENX SE SPONSORED ADR 04016X101 41,492 13,618 48.86 17,843 62.59 0.0295
2024-05-15 2024-03-31 13F ARGENX SE SPONSORED ADR 04016X101 27,874 9,474 51.49 10,975 56.79 0.0189
2024-02-14 2023-12-31 13F ARGENX SE SPONSORED ADR 04016X101 18,400 17,512 1,972.07 7,000 1,505.28 0.0132
2023-11-14 2023-09-30 13F ARGENX SE SPONSORED ADR 04016X101 888 -20 -2.20 437 23.51 0.0011
2023-08-14 2023-06-30 13F ARGENX SE SPONSORED ADR 04016X101 908 -3,082 -77.24 354 -76.24 0.0011
2023-05-15 2023-03-31 13F ARGENX SE SPONSORED ADR 04016X101 3,990 3,990 1,487 0.0061
2023-02-14 2022-12-31 13F ARGENX SE SPONSORED ADR 04016X101 0 -13,405 -100.00 0 -100.00
2022-11-14 2022-09-30 13F ARGENX SE SPONSORED ADR 04016X101 13,405 11,589 638.16 4,733 587.94 0.0239
2022-08-15 2022-06-30 13F ARGENX SE SPONSORED ADR 04016X101 1,816 1,816 688 0.0038
2022-05-16 2022-03-31 13F ARGENX SE SPONSORED ADR 04016X101 0 -4,667 -100.00 0 -100.00
2022-02-14 2021-12-31 13F ARGENX SE SPONSORED ADR 04016X101 4,667 776 19.94 1,634 39.06 0.0043
2021-11-15 2021-09-30 13F ARGENX SE SPONSORED ADR 04016X101 3,891 3,891 1,175 0.0034
2021-08-16 2021-06-30 13F ARGENX SE SPONSORED ADR 04016X101 0 -1,817 -100.00 0 -100.00
2021-05-17 2021-03-31 13F ARGENX SE SPONSORED ADR 04016X101 1,817 1,817 500 0.0029
2019-08-14 2019-06-30 13F ARGENX SE SPONSORED ADR 04016X101 0 -1,758 -100.00 0 -100.00
2019-05-15 2019-03-31 13F ARGENX SE SPONSORED ADR 04016X101 1,758 1,758 219 0.0023
2019-02-14 2018-12-31 13F ARGENX SE SPONSORED ADR 04016X101 0 -3,775 -100.00 0 -100.00
2018-11-14 2018-09-30 13F ARGENX SE SPONSORED ADR 04016X101 3,775 3,775 286 0.0034
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 ARGENX SE SPONSORED ADR Call 900 -95.21 657 -95.84 n/a n/a n/a
2026-02-13 2025-12-31 13F ARGENX SE SPONSORED ADR Call 18,800 20.51 15,810 37.41 n/a n/a n/a
2025-11-14 2025-09-30 13F ARGENX SE SPONSORED ADR Call 15,600 -11.86 11,506 17.93 n/a n/a n/a
2025-08-27 2025-06-30 13F/A ARGENX SE SPONSORED ADR Call 17,700 9,757 n/a n/a n/a
2025-08-14 2025-06-30 13F ARGENX SE SPONSORED ADR Call 17,700 9,757 n/a n/a n/a
2025-02-14 2024-12-31 13F ARGENX SE SPONSORED ADR Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-14 2024-09-30 13F ARGENX SE SPONSORED ADR Call 500 271 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
(%)
2026-05-15 2026-03-31 13F ARGENX SE SPONSORED ADR Put 5,500 96.43 4,016 70.60 n/a n/a n/a
2026-02-13 2025-12-31 13F ARGENX SE SPONSORED ADR Put 2,800 2,355 n/a n/a n/a
2025-02-14 2024-12-31 13F ARGENX SE SPONSORED ADR Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-14 2024-09-30 13F ARGENX SE SPONSORED ADR Put 700 379 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.