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argenx
ARGX

Overview Fund Activity

442 hedge funds and large institutions have $19.7B invested in argenx in 2025 Q1 according to their latest regulatory filings, with 83 funds opening new positions, 156 increasing their positions, 148 reducing their positions, and 27 closing their positions.

Holders
442
Holders Change
+49
Holders Change %
+12.47%
% of All Funds
6.01%
Holding in Top 10
18
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.24%
New
83
Increased
156
Reduced
148
Closed
27
Calls
$319M
Puts
$174M
Net Calls
+$145M
Net Calls Change
-$48.4M

Top Buyers

1
Millennium Management
1
Millennium Management
New York
$159M
2
Capital World Investors
2
Capital World Investors
California
$1.15B
3
BNP Paribas Financial Markets
3
BNP Paribas Financial Markets
France
$78.9M
4
UBS Group
4
UBS Group
Switzerland
$60.5M
5
Bank of America
5
Bank of America
North Carolina
$201M

Top Sellers

1
PBA
1
Paradigm Biocapital Advisors
New York
$35.3M
2
T. Rowe Price Investment Management
2
T. Rowe Price Investment Management
Maryland
$47.7M
3
Artisan Partners
3
Artisan Partners
Wisconsin
$1.65B
4
Janus Henderson Group
4
Janus Henderson Group
United Kingdom
$1.26B
5
Point72 Asset Management
5
Point72 Asset Management
Connecticut
$0
Name Market Value Shares Shares
Change 		Shares
Change %
Fidelity Investments
1
Fidelity Investments
Massachusetts
$3.35B 5,663,207 +44,985 +0.8%
T. Rowe Price Associates
2
T. Rowe Price Associates
Maryland
$3.19B 5,384,586 -132,308 -2%
Artisan Partners
3
Artisan Partners
Wisconsin
$1.65B 2,785,890 -284,105 -9%
Janus Henderson Group
4
Janus Henderson Group
United Kingdom
$1.26B 2,143,083 -169,275 -7%
Capital World Investors
5
Capital World Investors
California
$1.15B 1,937,992 +151,056 +8%
ACA
6
Avoro Capital Advisors
New York
$731M 1,235,177 -3,290 -0.3%
BlackRock
7
BlackRock
New York
$604M 1,021,325 -47,625 -4%
Morgan Stanley
8
Morgan Stanley
New York
$519M 877,150 -61,388 -7%
RI
9
RTW Investments
New York
$399M 673,497 – –
ClearBridge Investments
10
ClearBridge Investments
New York
$393M 664,368 +34,540 +5%
BG
11
Bellevue Group
Switzerland
$343M 578,874 -14,310 -2%
Citadel Advisors
12
Citadel Advisors
Florida
$327M 551,939 +37,834 +7%
Wellington Management Group
13
Wellington Management Group
Massachusetts
$240M 406,204 -18,770 -4%
Invesco
14
Invesco
Georgia
$227M 382,741 -21,275 -5%
SEI Investments
15
SEI Investments
Pennsylvania
$214M 361,000 -5,620 -2%
Bank of America
16
Bank of America
North Carolina
$201M 340,115 +81,566 +32%
Lord, Abbett & Co
17
Lord, Abbett & Co
New Jersey
$163M 274,700 +68,498 +33%
Millennium Management
18
Millennium Management
New York
$159M 268,604 +204,180 +317%
D.E. Shaw & Co
19
D.E. Shaw & Co
New York
$154M 260,325 -27,974 -10%
Jennison Associates
20
Jennison Associates
New York
$148M 249,461 -52,688 -17%
Pictet Asset Management
21
Pictet Asset Management
Switzerland
$136M 229,441 -55,253 -19%
JFG
22
Jefferies Financial Group
New York
$128M 216,000 +248 +0.1%
BAMCO Inc
23
BAMCO Inc
New York
$126M 213,400 -28,778 -12%
O
24
OrbiMed
New York
$122M 206,700 +17,000 +9%
1832 Asset Management
25
1832 Asset Management
Ontario, Canada
$108M 183,300 -24,000 -12%
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