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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
Two Sigma Advisers
476
Two Sigma Advisers
New York
-$114M -135,500 Closed
Acadian Asset Management
477
Acadian Asset Management
Massachusetts
-$99.1M -117,887 Closed
SPPAM
478
Summit Partners Public Asset Management
Massachusetts
-$69.5M -82,620 Closed
AC
479
Armistice Capital
New York
-$48.8M -58,000 Closed
WP
480
Woodline Partners
California
-$38.2M -45,426 Closed
QC
481
Quadrature Capital
United Kingdom
-$21.4M -25,399 Closed
MCM
482
Moore Capital Management
New York
-$21M -25,000 Closed
AAP
483
Ardsley Advisory Partners
Connecticut
-$20.2M -24,000 Closed
FTM
484
First Turn Management
California
-$19.6M -23,256 Closed
SAG
485
Susquehanna Advisors Group
Pennsylvania
-$16M -19,079 Closed
DCM
486
Driehaus Capital Management
Illinois
-$14.2M -16,897 Closed
Marshall Wace
487
Marshall Wace
United Kingdom
-$11.4M -13,508 Closed
IAA
488
Independent Advisor Alliance
North Carolina
-$7.28M -8,651 Closed
DekaBank Deutsche Girozentrale
489
DekaBank Deutsche Girozentrale
Germany
-$3.47M -8,445 Closed
JF
490
Jump Financial
Illinois
-$6.56M -7,798 Closed
BBL
491
Beck Bode LLC
Massachusetts
-$5.61M -6,672 Closed
VF
492
Virtu Financial
New York
-$5.08M -6,041 Closed
Calamos Advisors
493
Calamos Advisors
Illinois
-$3.9M -4,640 Closed
XT
494
XTX Topco
Cayman Islands
-$3.61M -4,297 Closed
SG Americas Securities
495
SG Americas Securities
New York
-$2.67M -3,179 Closed
MMEA
496
Main Management ETF Advisors
California
-$2.63M -3,132 Closed
SAM
497
Simplify Asset Management
Nevada
-$2.62M -3,115 Closed
Verition Fund Management
498
Verition Fund Management
Connecticut
-$1.97M -2,345 Closed
Tudor Investment Corp
499
Tudor Investment Corp
Connecticut
-$1.81M -2,148 Closed
Group One Trading
500
Group One Trading
Illinois
-$1.46M -1,871 Closed