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argenx

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
Fidelity Investments
1
Fidelity Investments
Massachusetts
$3.64B -$471M -601,285 -11%
T. Rowe Price Associates
2
T. Rowe Price Associates
Maryland
$2.46B +$9.88M +12,631 +0.4%
Janus Henderson Group
3
Janus Henderson Group
United Kingdom
$1.85B +$65.4M +83,568 +3%
Capital World Investors
4
Capital World Investors
California
$1.65B +$266M +339,982 +18%
Artisan Partners
5
Artisan Partners
Wisconsin
$1.07B -$226M -288,960 -16%
Wellington Management Group
6
Wellington Management Group
Massachusetts
$746M +$268M +342,221 +50%
ACA
7
Avoro Capital Advisors
New York
$730M +$7.83M +10,000 +1%
BlackRock
8
BlackRock
New York
$590M +$56.9M +72,739 +10%
RI
9
RTW Investments
New York
$518M +$28.1M +35,949 +5%
Invesco
10
Invesco
Georgia
$434M +$140M +178,289 +43%
Morgan Stanley
11
Morgan Stanley
New York
$409M +$32.8M +41,859 +8%
AllianceBernstein
12
AllianceBernstein
Tennessee
$355M +$6.36M +8,122 +2%
Bank of America
13
Bank of America
North Carolina
$292M -$516K -659 -0.2%
Sands Capital Management
14
Sands Capital Management
Virginia
$248M -$13M -16,585 -5%
BG
15
Bellevue Group
Switzerland
$229M -$116M -148,854 -32%
SEI Investments
16
SEI Investments
Pennsylvania
$210M -$34.1M -43,540 -13%
William Blair Investment Management
17
William Blair Investment Management
Illinois
$194M +$33.2M +42,401 +19%
Jennison Associates
18
Jennison Associates
New York
$173M +$6.03M +7,707 +3%
Franklin Resources
19
Franklin Resources
California
$171M -$3.29M -4,208 -2%
Goldman Sachs
20
Goldman Sachs
New York
$169M +$50.7M +64,779 +39%
ClearBridge Investments
21
ClearBridge Investments
New York
$169M -$221M -282,408 -55%
Citadel Advisors
22
Citadel Advisors
Florida
$160M -$103M -131,725 -38%
Fiera Capital (Canada)
23
Fiera Capital (Canada)
Quebec, Canada
$159M -$6.87M -8,773 -4%
Ameriprise
24
Ameriprise
Minnesota
$158M +$22.5M +28,771 +15%
Allspring Global Investments
25
Allspring Global Investments
North Carolina
$130M +$2.02M +2,579 +1%