The largest holder of argenx stock is Norges Bank Investment Management, with 1.8 million shares (2.89% of the company) as of September 25, 2026. The 10 largest holders together own 3.7%.
In Q2 2026, 531 institutional holdings reports listed 28.3 million shares worth $26.10 billion, down 1.7% in shares from Q1 2026.
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026).

2026Q2
| Holder | Shares | % of company | Value |
|---|---|---|---|
| Norges Bank Investment Management | 1.8 million | 2.89% | – |
| Sjunde Ap Fonden (Investment Management) | 88,442 | 0.14% | – |
| FMR Investment Management (UK) Ltd. | 83,827 | 0.13% | – |
| Tim van Hauwermeiren0.1317 % | 82,418 | 0.13% | – |
| OFI Invest Asset Management SA | 55,053 | 0.09% | – |
| HBM Partners AG (Investment Management) | 50,000 | 0.08% | – |
| Lazard Asset Management Ltd. | 44,926 | 0.07% | – |
| State Street Global Advisors Ltd. | 44,569 | 0.07% | – |
| öKoworld Lux SA | 38,800 | 0.06% | – |
| T. Rowe Price International Ltd. | 35,486 | 0.06% | – |
As of September 25, 2026.
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 531 | 28.3 million | $26.1B |
| Q1 2026 | 499 | 28.8 million | $21.1B |
| Q4 2025 | 537 | 30.0 million | $25.0B |
| Q3 2025 | 511 | 30.7 million | $22.6B |
| Q2 2025 | 473 | 32.3 million | $17.8B |
| Q1 2025 | 479 | 33.4 million | $19.7B |
| Q4 2024 | 423 | 34.1 million | $21.0B |
| Q3 2024 | 394 | 35.1 million | $19.0B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
Norges Bank Investment Management, with 2.89% of the company (as of September 25, 2026). Next: Sjunde Ap Fonden (Investment Management) (0.14%) and FMR Investment Management (UK) Ltd. (0.13%).
531 institutional holdings reports listed argenx shares in Q2 2026, 28.3 million shares in all worth $26.10 billion.