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

SecurityARGX / argenx SE - Depositary Receipt (Common Stock)
InstitutionPFM Health Sciences, LP
Latest Disclosed Ownership4,535 shares
Latest Disclosed Value $ 3,311,684
PFM Health Sciences, LP reports 7.92% increase in ownership of ARGX / argenx SE - Depositary Receipt (Common Stock)

On May 15, 2026 - PFM Health Sciences, LP filed a 13F-HR form disclosing ownership of 4,535 shares of argenx SE - Depositary Receipt (Common Stock) (US:ARGX) valued at $3,311,684 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 4,202 shares of argenx SE - Depositary Receipt (Common Stock). This represents a change in shares of 7.92% during the quarter. The current value of the position is $3,687,590 USD.

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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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 4,535 333 7.92 3,312 -6.28 0.3020
2026-02-17 2025-12-31 13F ARGENX SE SPONSORED ADR 04016X101 4,202 -2,201 -34.37 3,534 -25.18 0.3523
2025-11-14 2025-09-30 13F ARGENX SE SPONSORED ADR 04016X101 6,403 -834 -11.52 4,723 18.38 0.3631
2025-08-14 2025-06-30 13F ARGENX SE SPONSORED ADR 04016X101 7,237 -61,762 -89.51 3,989 -90.23 0.3396
2025-05-15 2025-03-31 13F ARGENX SE SPONSORED ADR 04016X101 68,999 5,300 8.32 40,838 4.25 2.9651
2025-02-14 2024-12-31 13F ARGENX SE SPONSORED ADR 04016X101 63,699 -23,133 -26.64 39,175 -16.77 2.4278
2024-11-14 2024-09-30 13F ARGENX SE SPONSORED ADR 04016X101 86,832 0 0.00 47,070 26.05 2.6672
2024-08-14 2024-06-30 13F ARGENX SE SPONSORED ADR 04016X101 86,832 0 0.00 37,341 9.23 1.8479
2024-05-14 2024-03-31 13F ARGENX SE SPONSORED ADR 04016X101 86,832 0 0.00 34,187 3.49 1.6071
2024-02-14 2023-12-31 13F ARGENX SE SPONSORED ADR 04016X101 86,832 -17,900 -17.09 33,033 -35.84 1.9814
2023-11-14 2023-09-30 13F ARGENX SE SPONSORED ADR 04016X101 104,732 0 0.00 51,489 26.15 2.4255
2023-08-14 2023-06-30 13F ARGENX SE SPONSORED ADR 04016X101 104,732 0 0.00 40,817 4.60 1.5848
2023-05-15 2023-03-31 13F ARGENX SE SPONSORED ADR 04016X101 104,732 0 0.00 39,021 -1.65 1.7235
2023-02-14 2022-12-31 13F ARGENX SE SPONSORED ADR 04016X101 104,732 0 0.00 39,676 7.30 1.4207
2022-11-14 2022-09-30 13F ARGENX SE SPONSORED ADR 04016X101 104,732 0 0.00 36,976 -6.82 1.3378
2022-08-15 2022-06-30 13F ARGENX SE SPONSORED ADR 04016X101 104,732 104,732 39,681 1.5137
2019-05-15 2019-03-31 13F ARGENX SE SPONSORED ADR 04016X101 0 -117,834 -100.00 0 -100.00
2019-02-14 2018-12-31 13F ARGENX SE SPONSORED ADR 04016X101 117,834 117,834 11,320 0.3008
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.