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argenx
ARGX

Overview Fund Activity

428 hedge funds and large institutions have $17.7B invested in argenx in 2025 Q2 according to their latest regulatory filings, with 52 funds opening new positions, 176 increasing their positions, 144 reducing their positions, and 60 closing their positions.

Holders
428
Holders Change
-14
Holders Change %
-3.17%
% of All Funds
5.75%
Holding in Top 10
17
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-5.56%
% of All Funds
0.23%
New
52
Increased
176
Reduced
144
Closed
60
Calls
$236M
Puts
$100M
Net Calls
+$136M
Net Calls Change
-$9.58M

Top Buyers

1
Janus Henderson Group
1
Janus Henderson Group
United Kingdom
$1.41B
2
Citadel Advisors
2
Citadel Advisors
Florida
$477M
3
Millennium Management
3
Millennium Management
New York
$237M
4
Adage Capital Partners
4
Adage Capital Partners
Massachusetts
$164M
5
Franklin Resources
5
Franklin Resources
California
$154M

Top Sellers

1
BlackRock
1
BlackRock
New York
$303M
2
Morgan Stanley
2
Morgan Stanley
New York
$237M
3
Artisan Partners
3
Artisan Partners
Wisconsin
$1.3B
4
T. Rowe Price Associates
4
T. Rowe Price Associates
Maryland
$2.75B
5
Fidelity Investments
5
Fidelity Investments
Massachusetts
$2.99B
Name Market Value Shares Shares
Change 		Shares
Change %
Fidelity Investments
1
Fidelity Investments
Massachusetts
$2.99B 5,423,508 -239,699 -4%
T. Rowe Price Associates
2
T. Rowe Price Associates
Maryland
$2.75B 4,979,976 -404,610 -8%
Janus Henderson Group
3
Janus Henderson Group
United Kingdom
$1.41B 2,565,399 +422,316 +20%
Artisan Partners
4
Artisan Partners
Wisconsin
$1.3B 2,349,776 -436,114 -16%
Capital World Investors
5
Capital World Investors
California
$1.08B 1,951,082 +13,090 +0.7%
ACA
6
Avoro Capital Advisors
New York
$648M 1,175,000 -60,177 -5%
Citadel Advisors
7
Citadel Advisors
Florida
$477M 865,970 +314,031 +57%
ClearBridge Investments
8
ClearBridge Investments
New York
$426M 772,866 +108,498 +16%
RI
9
RTW Investments
New York
$371M 673,497 – –
BG
10
Bellevue Group
Switzerland
$315M 571,039 -7,835 -1%
BlackRock
11
BlackRock
New York
$303M 550,146 -471,179 -46%
Millennium Management
12
Millennium Management
New York
$237M 429,844 +161,240 +60%
Morgan Stanley
13
Morgan Stanley
New York
$237M 429,291 -447,859 -51%
Wellington Management Group
14
Wellington Management Group
Massachusetts
$223M 405,333 -871 -0.2%
Bank of America
15
Bank of America
North Carolina
$185M 336,120 -3,995 -1%
SEI Investments
16
SEI Investments
Pennsylvania
$174M 316,399 -44,601 -12%
Adage Capital Partners
17
Adage Capital Partners
Massachusetts
$164M 297,113 +158,476 +114%
Franklin Resources
18
Franklin Resources
California
$154M 279,803 +142,606 +104%
Jennison Associates
19
Jennison Associates
New York
$146M 264,647 +15,186 +6%
Invesco
20
Invesco
Georgia
$134M 243,746 -138,995 -36%
O
21
OrbiMed
New York
$115M 208,000 +1,300 +0.6%
American Century Companies
22
American Century Companies
Missouri
$114M 205,906 +57,054 +38%
Pictet Asset Management
23
Pictet Asset Management
Switzerland
$109M 197,286 -32,155 -14%
B
24
Braidwell
Connecticut
$107M 194,491 +33,642 +21%
Allspring Global Investments
25
Allspring Global Investments
North Carolina
$100M 184,987 +8,537 +5%
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