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446 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, 158 increasing their positions, 149 reducing their positions, and 27 closing their positions.

New
Increased
Maintained
Reduced
Closed

207% more first-time investments, than exits

New positions opened: 83 | Existing positions closed: 27

84% more call options, than puts

Call options by funds: $319M | Put options by funds: $174M

13% more funds holding

Funds holding: 396446 (+50)

6% more repeat investments, than reductions

Existing positions increased: 158 | Existing positions reduced: 149

0% more funds holding in top 10

Funds holding in top 10: 1818 (0)

1.63% less ownership

Funds ownership: 56.53%54.9% (-1.6%)

6% less capital invested

Capital invested by funds: $21B → $19.7B (-$1.26B)

Holders
446
Holders Change
+50
Holders Change %
+12.63%
% of All Funds
5.98%
Holding in Top 10
18
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
0.24%
New
83
Increased
158
Reduced
149
Closed
27
Calls
$319M
Puts
$174M
Net Calls
+$145M
Net Calls Change
-$48.4M
Name Holding Trade Value Shares
Change
Change in
Stake
RSCM
26
Rock Springs Capital Management
Maryland
$104M -$34M -53,850 -23%
Allspring Global Investments
27
Allspring Global Investments
North Carolina
$100M +$20.3M +32,239 +22%
Goldman Sachs
28
Goldman Sachs
New York
$99.9M +$13.8M +21,805 +15%
B
29
Braidwell
Connecticut
$95.2M +$50.5M +80,083 +99%
Fiera Capital (Canada)
30
Fiera Capital (Canada)
Quebec, Canada
$91.4M -$533K -844 -0.5%
American Century Companies
31
American Century Companies
Missouri
$88.1M -$4.12M -6,524 -4%
TD Asset Management
32
TD Asset Management
Ontario, Canada
$83.2M -$20.3M -32,106 -19%
Adage Capital Partners
33
Adage Capital Partners
Massachusetts
$82.1M +$30.8M +48,850 +54%
Franklin Resources
34
Franklin Resources
California
$81.2M +$1.64M +2,606 +2%
BNP Paribas Financial Markets
35
BNP Paribas Financial Markets
France
$78.9M +$77.7M +123,127 +1,203%
Marshall Wace
36
Marshall Wace
United Kingdom
$75M -$40.9M -64,779 -34%
TCM
37
TimesSquare Capital Management
New York
$74.2M +$663K +1,050 +0.8%
CC
38
Checkpoint Capital
California
$68.1M +$14.2M +22,500 +24%
PL
39
Perpetual Ltd
Australia
$67.8M -$4.03M -6,384 -5%
Legal & General Group
40
Legal & General Group
United Kingdom
$67.5M +$709K +1,124 +1%
EAM
41
Eventide Asset Management
Massachusetts
$67.3M +$6.06M +9,599 +9%
Assenagon Asset Management
42
Assenagon Asset Management
Luxembourg
$65.3M +$47.6M +75,435 +216%
Federated Hermes
43
Federated Hermes
Pennsylvania
$64.5M -$38.7M -61,302 -36%
UBS Group
44
UBS Group
Switzerland
$60.5M +$51.9M +82,239 +413%
AC
45
Armistice Capital
New York
$58M -$16.4M -26,000 -21%
Deutsche Bank
46
Deutsche Bank
Germany
$57.4M -$3.23M -5,111 -5%
WP
47
Woodline Partners
California
$53.1M +$9.82M +15,559 +21%
Public Sector Pension Investment Board (PSP Investments)
48
Public Sector Pension Investment Board (PSP Investments)
Quebec, Canada
$48.6M -$15.1M -23,890 -23%
T. Rowe Price Investment Management
49
T. Rowe Price Investment Management
Maryland
$47.7M -$257M -407,206 -83%
SPPAM
50
Summit Partners Public Asset Management
Massachusetts
$47.3M +$31.8M +50,389 +170%