ARGENX SE (ARGX) is held by 187 institutional investors that disclose positions via SEC 13F filings. The largest disclosed holder is FMR LLC as of Q1 2026.

Are institutions buying or selling ARGX?

In Q1 2026, 99 institutions opened or increased positions in ARGENX SE while 102 reduced or exited — a net selling quarter.

What is the Smart Money Verdict on ARGX?

The Smart Money Verdict combines four independent sources (institutional 13F activity, insider trades, activist filings, and congressional trades) into a single assessment for ARGENX SE.

How many hedge funds hold ARGX?

187 institutional investors report holding ARGENX SE (ARGX) as of Q1 2026, based on SEC 13F filings.

Is institutional money flowing into ARGX?

As of Q1 2026, tracked institutions in ARGENX SE show 99 buyers versus 102 sellers — net outflows.

ARGENX SE

ARGX·04016X101·US·ADR·Healthcare - Biotechnology-13D/G

187

Holders

(16 Elite)

$19.6B

Total Value

49% (201)

Consensus

99 buying - 102 selling

13F: Mar 31, 2026Insider & Congress: Updated regularly

Smart Money Verdict

View all

Held by 187 funds

16 elite

Who's Trading

Activist

FMR LLC8.7%May 6, 2026

Activist

T. Rowe Price Associates, Inc.6.0%Nov 14, 2025

Activist

Artisan Partners Asset Management Inc.3.8%Aug 12, 2025

CongressSDSean DuffySale $1,001 - $15,000Feb 11, 2025

View all activist filings View all congressional trades

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
FMR LLC	Decreased	5M(-10.8%)	$3.6B	0.2%	+40.55%	0
PRICE T ROWE ASSOCIATES INC /MD/	Increased	3.4M(+0.4%)	$2.5B	0.3%	+124.04%	38
Janus Henderson Group Ltd.	Increased	2.5M(+3.4%)	$1.8B	0.9%	+111.93%	47
Capital World Investors	Increased	2.3M(+17.7%)	$1.6B	0.2%	+104.81%	45
Artisan Partners Limited Partnership	Decreased	1.5M(-16.4%)	$1.1B	1.7%	+223.36%	0
WELLINGTON MANAGEMENT GROUP LLP	Increased	1M(+50.4%)	$745.9M	0.1%	+42.51%	52
Avoro Capital Advisors LLC	Increased	1M(+1.0%)	$730.3M	7.2%	+281.55%	63
BlackRock, Inc.	Increased	808,337(+9.9%)	$590.3M	0.0%	+27.44%	35
RTW INVESTMENTS, LP	Increased	709,446(+5.3%)	$518.1M	5.2%	+134.01%	64
Invesco Ltd.	Increased	594,697(+42.8%)	$434.3M	0.1%	+15.00%	42
MORGAN STANLEY	Increased	560,711(+8.1%)	$409.5M	0.0%	+66.04%	34
ALLIANCEBERNSTEIN L.P.	Increased	422,304(+2.0%)	$355.1M	0.1%	+10.83%	38
BANK OF AMERICA CORP /DE/	Decreased	400,117(-0.2%)	$292.2M	0.0%	+35.63%	0
SANDS CAPITAL MANAGEMENT, LLC	Decreased	340,285(-4.7%)	$248.5M	1.0%	+5.44%	0
SEI INVESTMENTS CO	Decreased	286,966(-13.2%)	$209.6M	0.2%	+136.79%	0
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	Increased	266,067(+19.0%)	$194.4M	0.6%	+6.55%	51
JENNISON ASSOCIATES LLC	Increased	237,468(+3.4%)	$173.4M	0.1%	+112.24%	38
FRANKLIN RESOURCES INC	Decreased	233,493(-1.8%)	$170.5M	0.0%	+111.09%	0
GOLDMAN SACHS GROUP INC	Increased	231,985(+38.7%)	$169.4M	0.0%	+30.47%	40
Clearbridge Investments, LLC	Decreased	231,356(-55.0%)	$168.9M	0.1%	+99.60%	0