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Annexon

128 hedge funds and large institutions have $239M invested in Annexon in 2025 Q2 according to their latest regulatory filings, with 19 funds opening new positions, 50 increasing their positions, 34 reducing their positions, and 37 closing their positions.

New
Increased
Maintained
Reduced
Closed

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more capital invested

Capital invested by funds: $ → $

less ownership

Funds ownership:

less funds holding

Funds holding:

49% less first-time investments, than exits

New positions opened: 19 | Existing positions closed: 37

67% less call options, than puts

Call options by funds: $50K | Put options by funds: $153K

Holders
128
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
1
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$50K
Puts
$153K
Net Calls
Net Calls Change

Top Buyers

1 +$5.84M
2 +$5.61M
3 +$1.89M
4
SCM
Sio Capital Management
New York
+$1.68M
5
Bank of America
Bank of America
North Carolina
+$994K

Top Sellers

1 -$4.37M
2 -$3.82M
3 -$3.31M
4
WP
Woodline Partners
California
-$2.55M
5
BlackRock
BlackRock
New York
-$1.35M
Name Holding Trade Value Shares
Change
Change in
Stake
Walleye Capital
26
Walleye Capital
New York
$1.91M
Renaissance Technologies
27
Renaissance Technologies
New York
$1.87M
Northern Trust
28
Northern Trust
Illinois
$1.78M
Charles Schwab
29
Charles Schwab
California
$1.75M
DM
30
Deerfield Management
New York
$1.4M
Deutsche Bank
31
Deutsche Bank
Germany
$1.23M
T. Rowe Price Associates
32
T. Rowe Price Associates
Maryland
$1.22M
UOC
33
UBS O'Connor
Illinois
$1.18M
HWAM
34
Hennion & Walsh Asset Management
New Jersey
$1.16M
BOTOTLSJU
35
Board of Trustees of The Leland Stanford Junior University
California
$1.16M
Acadian Asset Management
36
Acadian Asset Management
Massachusetts
$1.13M
RPAM
37
Rhenman & Partners Asset Management
Sweden
$1.1M
Qube Research & Technologies (QRT)
38
Qube Research & Technologies (QRT)
United Kingdom
$1.02M
PHP
39
Parkman Healthcare Partners
Connecticut
$970K
JSSH
40
J. Safra Sarasin Holding
$915K
Wells Fargo
41
Wells Fargo
California
$905K
AQR Capital Management
42
AQR Capital Management
Connecticut
$797K
UBS Group
43
UBS Group
Switzerland
$780K
Bank of New York Mellon
44
Bank of New York Mellon
New York
$723K
Susquehanna International Group
45
Susquehanna International Group
Pennsylvania
$640K
SSA
46
Schonfeld Strategic Advisors
New York
$639K
NL
47
Nuveen LLC
North Carolina
$614K
Royal Bank of Canada
48
Royal Bank of Canada
Ontario, Canada
$588K
American Century Companies
49
American Century Companies
Missouri
$507K
SPS
50
Susquehanna Portfolio Strategies
Pennsylvania
$499K