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475 hedge funds and large institutions have $21.1B invested in argenx in 2026 Q1 according to their latest regulatory filings, with 63 funds opening new positions, 176 increasing their positions, 172 reducing their positions, and 85 closing their positions.

New
Increased
Maintained
Reduced
Closed

84% more call options, than puts

Call options by funds: $251M | Put options by funds: $136M

2% more repeat investments, than reductions

Existing positions increased: 176 | Existing positions reduced: 172

2.15% less ownership

Funds ownership: 48.72%46.56% (-2.2%)

6% less funds holding

Funds holding: 507475 (-32)

16% less capital invested

Capital invested by funds: $25B → $21.1B (-$3.92B)

21% less funds holding in top 10

Funds holding in top 10: 1411 (-3)

26% less first-time investments, than exits

New positions opened: 63 | Existing positions closed: 85

Holders
475
Holders Change
-32
Holders Change %
-6.31%
% of All Funds
5.85%
Holding in Top 10
11
Holding in Top 10 Change
-3
Holding in Top 10 Change %
-21.43%
% of All Funds
0.14%
New
63
Increased
176
Reduced
172
Closed
85
Calls
$251M
Puts
$136M
Net Calls
+$115M
Net Calls Change
-$84.4M
Name Holding Trade Value Shares
Change
Change in
Stake
BNP Paribas Financial Markets
26
BNP Paribas Financial Markets
France
$130M +$83.8M +107,092 +151%
American Century Companies
27
American Century Companies
Missouri
$127M -$37.1M -47,348 -21%
CC
28
Checkpoint Capital
California
$112M +$8.61M +11,000 +8%
Lord, Abbett & Co
29
Lord, Abbett & Co
New Jersey
$111M -$40.5M -51,781 -25%
Legal & General Group
30
Legal & General Group
United Kingdom
$110M +$5.08M +6,495 +4%
Pictet Asset Management
31
Pictet Asset Management
Switzerland
$108M -$3.84M -4,905 -3%
Deutsche Bank
32
Deutsche Bank
Germany
$102M +$3.66M +4,671 +3%
BAMCO Inc
33
BAMCO Inc
New York
$101M -$11.8M -15,071 -10%
O
34
OrbiMed
New York
$100M -$7.12M -9,100 -6%
Lazard Asset Management
35
Lazard Asset Management
New York
$97.4M +$248K +317 +0.2%
BNP Paribas Asset Management
36
BNP Paribas Asset Management
France
$94.3M +$10.8M +13,789 +12%
EAM
37
Eventide Asset Management
Massachusetts
$91.7M +$3.47M +4,436 +4%
AM
38
AGF Management
Ontario, Canada
$91.3M +$296K +378 +0.3%
Two Sigma Investments
39
Two Sigma Investments
New York
$79.7M -$117M -149,435 -58%
First Trust Advisors
40
First Trust Advisors
Illinois
$78.3M +$41.7M +53,293 +99%
PI
41
PineBridge Investments
New York
$75.8M +$24.9M +31,772 +44%
RSCM
42
Rock Springs Capital Management
Maryland
$71.9M -$3.72M -4,750 -5%
Federated Hermes
43
Federated Hermes
Pennsylvania
$69.6M -$9.01M -11,517 -11%
Adage Capital Partners
44
Adage Capital Partners
Massachusetts
$65.7M +$70.4M +90,000 New
Bank of Montreal
45
Bank of Montreal
Ontario, Canada
$62.3M +$54M +68,956 +421%
B
46
Braidwell
Connecticut
$62M +$42.2M +53,932 +174%
1832 Asset Management
47
1832 Asset Management
Ontario, Canada
$61.5M -$20.7M -26,500 -24%
TCM
48
TimesSquare Capital Management
New York
$60.7M -$19.9M -25,392 -23%
Aberdeen Group
49
Aberdeen Group
United Kingdom
$60M +$23.3M +29,759 +57%
TD Asset Management
50
TD Asset Management
Ontario, Canada
$59M -$16.2M -20,699 -20%