argenx SE ARGX
$927.21 +$32.44 (+3.63%)
Market closed · Nov 6, 8:10 pm ET · Last extended-hours $935.99 +0.95%
Open$894.78
Prev close$894.77
Day range$892.36 – $929.88
Volume379.3K
Market cap$58.31B
P/E (TTM)32.1
Dividend yield–
Ownership & positioning
Who holds it, who is betting against it, and where the big money is moving
Institutional ownership73.4%-6.02 pts vs. prior quarter
Institutions holding902+28 vs. prior quarter
Short interest2.15% of floatDays to cover 2.5 · as of 15 Oct 2026
Short-sale volume share7.8%5-day average of daily volume
Short-sale volume as % of daily volume
Large-order net flow, last 20 sessions
Net of large-order buying minus selling, in USD. Over this window: +$60.07M (10 inflow days, 10 outflow days).
Net flow by order size, last 20 sessions
Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.
The five largest holders on file together own 29.7% of shares outstanding.
Largest holders
By investor type
Reported short interest has held roughly steady near 2.15% of float over the last 6 biweekly reports (31 Jul 2026 to 15 Oct 2026).
Recent institutional activity
| Holder | Type | Period | Share change | New stake |
|---|---|---|---|---|
| Bank of America Corporation | Public Company | 2026/Q3 | +638,835 | 1.2% |
| Norges Bank Investment Management | Sovereign Wealth Fund | 2026/Q3 | +95,225 | 3.0% |
| Franklin Resources | Mutual Fund | 2026/Q3 | +55,997 | 0.8% |
| Vanguard Capital Management, LLC | Mutual Fund | 2026/Q3 | +45,918 | 4.0% |
| Westfield Capital Management Company, L.P. | Mutual Fund | 2026/Q3 | +43,177 | 0.2% |
| Franklin Resources | Mutual Fund | 2026/Q3 | +54,507 | 0.8% |
| Strategic Advisers LLC | Mutual Fund | 2026/Q3 | +59,884 | 0.7% |
| Bessemer Investment Management LLC | Mutual Fund | 2026/Q3 | +203,528 | 0.4% |
| FMR | Mutual Fund | 2026/Q3 | +198,865 | 8.3% |
| Janus Henderson Group plc | Mutual Fund | 2026/Q3 | +166,495 | 4.3% |
| Barclays PLC | Public Company | 2026/Q3 | +129,152 | 0.2% |
| Bank of America Corporation | Public Company | 2026/Q3 | +96,174 | 0.2% |
| Two Sigma Investments, LP | Hedge Fund | 2026/Q3 | +76,517 | 0.3% |
| 1832 Asset Management L.P. | Mutual Fund | 2026/Q3 | +75,540 | 0.3% |
| Morgan Stanley | Public Company | 2026/Q3 | +66,069 | 0.4% |
Institutional buy/sell activity by reporting period, largest moves first.
Short interest, by report
| Report date | Shares short | % of float | Days to cover |
|---|---|---|---|
| 15 Oct 2026 | 1,353,843 | 2.2% | 2.5 |
| 30 Sep 2026 | 1,352,184 | 2.2% | 4.9 |
| 15 Sep 2026 | 1,313,174 | 2.1% | 6.3 |
| 31 Aug 2026 | 1,259,349 | 2.0% | 3.9 |
| 14 Aug 2026 | 1,202,082 | 1.9% | 4.4 |
| 31 Jul 2026 | 1,334,571 | 2.1% | 4.7 |
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