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argenx
ARGX

Overview Fund Activity

441 hedge funds and large institutions have $19.7B invested in argenx in 2025 Q1 according to their latest regulatory filings, with 82 funds opening new positions, 156 increasing their positions, 148 reducing their positions, and 27 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
441
Holders Change
+48
Holders Change %
+12.21%
% of All Funds
5.99%
Holding in Top 10
18
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.24%
New
82
Increased
156
Reduced
148
Closed
27
Calls
$319M
Puts
$174M
Net Calls
+$145M
Net Calls Change
-$48.4M

Top Buyers

1
Millennium Management
Millennium Management
New York
+$121M
2
Capital World Investors
Capital World Investors
California
+$89.4M
3
BNP Paribas Financial Markets
BNP Paribas Financial Markets
France
+$72.9M
4
UBS Group
UBS Group
Switzerland
+$48.7M
5
Bank of America
Bank of America
North Carolina
+$48.3M

Top Sellers

1
PBA
Paradigm Biocapital Advisors
New York
-$250M
2
T. Rowe Price Investment Management
T. Rowe Price Investment Management
Maryland
-$241M
3
Artisan Partners
Artisan Partners
Wisconsin
-$168M
4
Janus Henderson Group
Janus Henderson Group
United Kingdom
-$99.7M
5
Point72 Asset Management
Point72 Asset Management
Connecticut
-$91M
Name Holding Trade Value Shares
Change 		Shares
Change %
Mirae Asset Global Investments
176
Mirae Asset Global Investments
South Korea
$1.93M -$1.18K -2 -0.1%
OSAM
177
O'Shaughnessy Asset Management
Connecticut
$1.91M +$50.9K +86 +3%
HS
178
HighVista Strategies
Massachusetts
$1.9M -$1.5M -2,542 -44%
SAM
179
Sectoral Asset Management
Quebec, Canada
$1.84M -$194K -327 -10%
OAM
180
Oppenheimer Asset Management
New York
$1.78M -$115K -195 -6%
AIM
181
Aigen Investment Management
New York
$1.73M +$1.73M +2,924 New
NIM
182
NEOS Investment Management
Connecticut
$1.73M -$992K -1,676 -36%
TE
183
Tema ETFs
New York
$1.73M -$992K -1,676 -36%
FDCDDQ
184
Federation des caisses Desjardins du Quebec
Quebec, Canada
$1.73M +$888K +1,500 +106%
VPIM
185
Vanguard Personalized Indexing Management
California
$1.67M +$24.3K +41 +1%
NFGH
186
Nan Fung Group Holdings
Hong Kong
$1.66M +$1.4M +2,370 +551%
PAP
187
Persistent Asset Partners
Hong Kong
$1.64M +$1.64M +2,766 New
Calamos Advisors
188
Calamos Advisors
Illinois
$1.56M +$1.56M +2,640 New
AI
189
Atria Investments
North Carolina
$1.55M +$7.1K +12 +0.5%
Barclays
190
Barclays
United Kingdom
$1.51M +$290K +490 +24%
Allianz Asset Management
191
Allianz Asset Management
Germany
$1.51M -$624K -1,054 -29%
Principal Financial Group
192
Principal Financial Group
Iowa
$1.48M – – –
QCG
193
Quadrant Capital Group
Ohio
$1.42M +$755K +1,275 +114%
CCIA
194
Campbell & Co Investment Adviser
Maryland
$1.38M +$1.38M +2,328 New
Pathstone Holdings
195
Pathstone Holdings
New Jersey
$1.38M -$48.5K -82 -3%
CIS
196
Custom Index Systems
New York
$1.27M +$1.27M +2,148 New
William Blair & Company
197
William Blair & Company
Illinois
$1.23M +$690K +1,165 +127%
Osaic Holdings
198
Osaic Holdings
Arizona
$1.22M +$115K +195 +10%
SP
199
SIH Partners
Delaware
$1.19M +$1.19M +2,006 New
JGC
200
J. Goldman & Co
New York
$1.18M +$1.18M +2,000 New
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