argenx SE Ownership | Who Owns argenx SE?

argenx SE Ownership Summary

argenx SE is owned by 2.01% institutional investors, 0.01% insiders, and 97.98% retail investors. Fmr is the largest institutional shareholder, holding 9.33% of ARGX shares. American Funds Europacific Growth A is the top mutual fund, with 1.91% of its assets in argenx SE shares.

ARGX Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	argenx SE	2.01%	0.01%	97.98%
Sector	Healthcare Stocks	231.98%	10.74%	-142.72%
Industry	Biotech Stocks	381.47%	10.55%	-292.02%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Fmr	5.69M	9.33%	$4.20B
Price t rowe associates inc /md/	3.64M	5.96%	$2.69B
Janus henderson group	2.31M	3.85%	$1.42B
Artisan partners limited partnership	2.19M	3.58%	$1.61B
Capital world investors	1.92M	3.14%	$1.61B
Blackrock	1.01M	1.71%	$434.90M
Avoro capital advisors	990.00K	1.62%	$730.18M
Blackrock funding, inc. /de	735.60K	1.21%	$618.60M
Wellington management group llp	729.99K	1.20%	$538.41M
Rtw investments, lp	673.50K	1.10%	$496.74M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Checkpoint capital	150.00K	37.07%	$110.63M
Eagle health investments lp	62.73K	11.59%	$52.75M
Avoro capital advisors	990.00K	9.44%	$730.18M
Artia global partners lp	78.31K	9.14%	$57.76M
Bellevue group	546.33K	8.37%	$402.95M
Tri locum partners lp	43.41K	7.36%	$32.02M
Rock springs capital management lp	142.75K	6.15%	$105.29M
Rtw investments, lp	673.50K	6.12%	$496.74M
Acuta capital partners	6.38K	4.86%	$4.70M
Patient square capital lp	26.00K	4.68%	$21.86M

Top Buyers

Holder	Shares	% Assets	Change
Wellington management group llp	729.99K	0.09%	324.65K
Fmr	5.69M	0.22%	268.84K
Two sigma investments, lp	294.16K	0.32%	250.28K
William blair investment management	223.67K	0.52%	223.67K
Blackrock funding, inc. /de	735.60K	0.01%	211.80K

Top Sellers

Holder	Shares	% Assets	Change
Price t rowe associates inc /md/	3.64M	0.29%	-1.34M
Massachusetts financial services co /ma/	-	-	-425.55K
Deep track capital, lp	-	-	-365.00K
Adage capital partners gp	-	-	-297.11K
Clearbridge investments	513.76K	0.35%	-243.10K

New Positions

Holder	Shares	% Assets	Change	Value
William blair investment management	223.67K	0.52%	223.67K	$188.07M
Melqart asset management (uk)	38.00K	1.35%	38.00K	$16.34M
Axa investment managers	26.71K	0.05%	26.71K	$19.70M
Hap trading	18.80K	0.01%	18.80K	$117.50K
Sands capital management	16.63K	0.03%	16.63K	$12.26M

Sold Out

Holder	Change
Nelson, van denburg & campbell wealth management group	-1.00
Mendota financial group	-1.00
Palisade asset management	-1.00
Clarivest asset management	-1.00
Financial synergies wealth advisors	-1.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Dec 31, 2025	184	-62.75%	1,228,339	-95.98%	2	0.08%	102	-62.50%	51	-61.65%
Sep 30, 2025	203	-54.59%	1,880,393	-93.83%	3	0.12%	117	-48.23%	47	-67.81%
Jun 30, 2025	456	-1.08%	32,120,664	-3.07%	52	1.72%	229	-2.14%	147	-2.65%
Mar 31, 2025	461	12.99%	33,399,374	-2.11%	55	1.73%	233	3.56%	154	29.41%
Dec 31, 2024	397	3.66%	34,089,629	-2.70%	56	1.67%	218	13.54%	119	4.39%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
American Funds Europacific Growth A	1.16M	1.91%	-
Capital Group EuroPacific Growth Comp	1.16M	1.91%	-
American Funds EUPAC A	1.09M	1.75%	-23.63K
Capital Group EUPAC Composite	1.09M	1.75%	-23.63K
Fidelity Growth Compy Commingled Pl O	839.00K	1.40%	-
Fidelity Growth Compy Commingled Pl S	821.16K	1.33%	-19.87K
US Small-Cap Growth II Equity Comp	624.31K	1.02%	-155.42K
Fidelity Growth Company Fund	609.07K	0.98%	-3.43K
BB Biotech AG Ord	591.00K	0.97%	-39.00K
T. Rowe Price Health Sciences	556.83K	0.90%	-66.63K

ARGX Ownership FAQ

Who Owns argenx SE?

argenx SE shareholders are primarily institutional investors at 2.01%, followed by 0.01% insiders and 97.98% retail investors. The average institutional ownership in argenx SE's industry, Biotech Stocks , is 381.47%, which argenx SE falls below.

Who owns the most shares of argenx SE?

argenx SE’s largest shareholders are Fmr (5.69M shares, 9.33%), Price t rowe associates inc /md/ (3.64M shares, 5.96%), and Janus henderson group (2.31M shares, 3.85%). Together, they hold 19.14% of argenx SE’s total shares outstanding.

Does Blackrock own argenx SE?

Yes, BlackRock owns 1.71% of argenx SE, totaling 1.01M shares as of Jun 2024. This represents 0.01% of BlackRock's total assets, with a market value of 434.9M$. In the last quarter, BlackRock decreased its holdings by -35.998K shares, a -3.44% change.

Who is argenx SE’s biggest shareholder by percentage of total assets invested?

Checkpoint capital is argenx SE’s biggest shareholder by percentage of total assets invested, with 37.07% of its assets in 150K argenx SE shares, valued at 110.63M$.

Who is the top mutual fund holder of argenx SE shares?

American Funds Europacific Growth A is the top mutual fund holder of argenx SE shares, with 1.91% of its total shares outstanding invested in 1.16M argenx SE shares.

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