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

SecurityARGX / argenx SE - Depositary Receipt (Common Stock)
InstitutionAssetmark, Inc
Latest Disclosed Ownership9,275 shares
Latest Disclosed Value $ 6,773,361
Assetmark, Inc reports 5.74% decrease in ownership of ARGX / argenx SE - Depositary Receipt (Common Stock)

On May 6, 2026 - Assetmark, Inc filed a 13F-HR form disclosing ownership of 9,275 shares of argenx SE - Depositary Receipt (Common Stock) (US:ARGX) valued at $6,773,069 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 9,840 shares of argenx SE - Depositary Receipt (Common Stock). This represents a change in shares of -5.74% during the quarter. The current value of the position is $7,541,874 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-06 2026-03-31 13F ARGENX SE SPONSORED ADR 04016X101 9,275 -565 -5.74 6,773 -18.15 0.0138
2026-01-23 2025-12-31 13F ARGENX SE SPONSORED ADR 04016X101 9,840 22 0.22 8,275 14.28 0.0169
2025-11-06 2025-09-30 13F ARGENX SE SPONSORED ADR 04016X101 9,818 791 8.76 7,242 45.52 0.0155
2025-08-04 2025-06-30 13F ARGENX SE SPONSORED ADR 04016X101 9,027 101 1.13 4,976 -5.81 0.0117
2025-05-06 2025-03-31 13F ARGENX SE SPONSORED ADR 04016X101 8,926 278 3.21 5,283 -0.66 0.0145
2025-02-06 2024-12-31 13F ARGENX SE SPONSORED ADR 04016X101 8,648 879 11.31 5,319 26.29 0.0144
2024-11-01 2024-09-30 13F ARGENX SE SPONSORED ADR 04016X101 7,769 598 8.34 4,211 36.59 0.0121
2024-08-13 2024-06-30 13F ARGENX SE SPONSORED ADR 04016X101 7,171 774 12.10 3,084 22.44 0.0095
2024-05-07 2024-03-31 13F ARGENX SE SPONSORED ADR 04016X101 6,397 759 13.46 2,519 17.44 0.0082
2024-02-09 2023-12-31 13F ARGENX SE SPONSORED ADR 04016X101 5,638 1,273 29.16 2,145 -0.05 0.0078
2023-10-27 2023-09-30 13F ARGENX SE SPONSORED ADR 04016X101 4,365 643 17.28 2,146 47.93 0.0086
2023-08-11 2023-06-30 13F ARGENX SE SPONSORED ADR SPONSORED ADR 04016X101 3,722 435 13.23 1,451 18.46 0.0057
2023-05-05 2023-03-31 13F ARGENX SE SPONSORED ADR SPONSORED ADR 04016X101 3,287 201 6.51 1,225 4.70 0.0051
2023-02-10 2022-12-31 13F ARGENX SE SPONSORED ADR 04016X101 3,086 529 20.69 1,169 29.46 0.0051
2022-11-01 2022-09-30 13F ARGENX SE SPONSORED ADR 04016X101 2,557 463 22.11 903 13.87 0.0042
2022-08-03 2022-06-30 13F ARGENX SE SPONSORED ADR SPONSORED ADR 04016X101 2,094 603 40.44 793 68.72 0.0036
2022-05-13 2022-03-31 13F ARGENX SE SPONSORED ADR SPONSORED ADR 04016X101 1,491 890 148.09 470 123.81 0.0020
2022-02-14 2021-12-31 13F ARGENX SE SPONSORED ADR SPONSORED ADR 04016X101 601 536 824.62 210 950.00 0.0009
2021-11-12 2021-09-30 13F ARGENX SE SPONSORED ADR ADR 04016X101 65 65 20 0.0001
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.