ARGXargenx SE

$824.98+12% 1Y

Who owns ARGX

496 institutions reported holding ARGX for 2026Q2, together 45% of the company, more than the 465 a quarter earlier.

496

Institutions reporting a position · as of 2026Q2 · up from 465 the quarter before

Shares held by institutions
28.1M

Shares held by institutions · 45% of the company · long US equity positions only, as reported on Form 13F

Reported value
$26.0B

Reported value · at Jun 30, 2026 prices, not today's

Top 5 holders
23%

Top 5 holders · of the whole company, between five filers

Details›
Reporting quarter2026-06-30
2026Q2
Quarters on record
37
New positions
86
Positions exited
54
Added to
165
Reduced
145
Top 10 holdersof the company
29%
Shares sold shortsettled Sep 15, 2026
1.3M
Short interestof shares outstanding
2.1%
Days to coverat the average daily volume
6.3
Change in the short positionsince the Aug 31, 2026 count
+4.3%
Institutional ownership by quarter, 2017Q2 to 2026Q2
QuarterFilersSharesReported value
2026Q249628.1M$26.0B
2026Q146528.7M$21.0B
2025Q449629.9M$25.0B
2025Q346030.4M$22.5B
2025Q243132.1M$17.7B
2025Q144333.3M$19.7B
2024Q439434.0M$20.9B
2024Q335335.0M$18.9B
2024Q233334.2M$14.7B
2024Q132433.9M$13.3B
2023Q434232.7M$12.4B
2023Q333432.2M$15.8B
2023Q228730.8M$12.0B
2023Q126831.1M$11.6B
2022Q426730.6M$11.6B
2022Q325331.7M$11.2B
Largest reported holders, 2026Q2
HolderShares% of companyValue
FMR LLC5.2M8.5%$4.85B
PRICE T ROWE ASSOCIATES INC /MD/2.7M4.3%$2.48B
Jupiter Topco LLC2.5M4.0%$2.30B
Capital World Investors2.2M3.6%$2.04B
Artisan Partners Limited Partnership1.5M2.4%$1.40B
Avoro Capital Advisors LLC1.0M1.6%$928M
WELLINGTON MANAGEMENT GROUP LLP0.9M1.5%$863M
BlackRock Inc.0.8M1.3%$721M
RTW INVESTMENTS, LP0.7M1.1%$658M
MORGAN STANLEY0.6M1.0%$597M
Short interest by settlement date, Aug 29, 2025 to Sep 15, 2026
SettlementShares shortOf shares outstandingDays to cover
Sep 15, 20261.3M2.1%6.3
Aug 31, 20261.3M2.0%3.9
Aug 14, 20261.2M1.9%4.3
Jul 31, 20261.3M2.2%4.7
Jul 15, 20261.5M2.5%5.1
Jun 30, 20261.5M2.3%3.5
Jun 15, 20261.5M2.4%3.9
May 29, 20261.8M2.9%6.9
May 15, 20262.2M3.5%6.2
Apr 30, 20262.1M3.4%7.2
Apr 15, 20262.3M3.7%7.3
Mar 31, 20262.2M3.6%6.8

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold. The short position is FINRA's consolidated count for each twice-monthly settlement date, as a share of shares outstanding.

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