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argenx SE ARGX

US equityMarket cap rank #269Biotechnology
$955.32
+$9.50 (+1.00%)
Market open · Sep 24, 2:00 pm ET
After hours $945.82 0.00%
Open$945.81
Prev close$945.82
Day range$944.21 – $965.27
Volume219.2K
Market cap$59.77B
P/E (TTM)36.4
Dividend yield–

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership74.9%-3.71 pts vs. prior quarter
Institutions holding831-9 vs. prior quarter
Short interest2.01% of floatDays to cover 3.9 · as of 31 Aug 2026
Short-sale volume share7.9%5-day average of daily volume

Short-sale volume as % of daily volume

5%11%17%23%Aug '26Sep '26Sep '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: +$6.60M (11 inflow days, 9 outflow days).

Largest holders

  • FMR8.25%
  • BlackRock7.40%
  • Artisan Partners Limited Partnership5.32%
  • Janus Henderson Group plc4.35%
  • T. Rowe Price Group, Inc.4.34%

By investor type

  • Mutual Fund63.70%
  • Hedge Fund4.46%
  • Sovereign Wealth Fund2.97%
  • Public Company1.09%
  • Private Company1.03%
  • Government Pension Fund0.98%
  • VC/PE Fund0.48%
  • Insurance Company0.17%
Institutional holders831
Institutional ownership74.9%

Short interest

Report dateShares short% of floatDays to cover
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
15 Jul 2026 1,539,375 2.5% 5.1
30 Jun 2026 1,450,472 2.3% 3.5
15 Jun 2026 1,466,999 2.4% 3.9
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