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Annexon

142 hedge funds and large institutions have $309M invested in Annexon in 2025 Q3 according to their latest regulatory filings, with 34 funds opening new positions, 48 increasing their positions, 36 reducing their positions, and 17 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

1.39% more ownership

Funds ownership: 90.88%92.27% (+1.4%)

7% less call options, than puts

Call options by funds: $377K | Put options by funds: $405K

100% less funds holding in top 10

Funds holding in top 10: 10 (-1)

Holders
142
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$377K
Puts
$405K
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
SCM
26
Sirios Capital Management
Massachusetts
$2.96M
RPAM
27
Rhenman & Partners Asset Management
Sweden
$2.51M
Charles Schwab
28
Charles Schwab
California
$2.41M
Northern Trust
29
Northern Trust
Illinois
$2.4M
Dimensional Fund Advisors
30
Dimensional Fund Advisors
Texas
$2.34M
Renaissance Technologies
31
Renaissance Technologies
New York
$2.3M
N
32
Nuveen
North Carolina
$2.08M
KCM
33
Kennedy Capital Management
Missouri
$1.95M
DM
34
Deerfield Management
New York
$1.78M
AQR Capital Management
35
AQR Capital Management
Connecticut
$1.75M
Qube Research & Technologies (QRT)
36
Qube Research & Technologies (QRT)
United Kingdom
$1.75M
Acadian Asset Management
37
Acadian Asset Management
Massachusetts
$1.62M
T. Rowe Price Associates
38
T. Rowe Price Associates
Maryland
$1.48M
BOTOTLSJU
39
Board of Trustees of The Leland Stanford Junior University
California
$1.47M
HWAM
40
Hennion & Walsh Asset Management
New Jersey
$1.45M
Wells Fargo
41
Wells Fargo
California
$1.25M
PHP
42
Parkman Healthcare Partners
Connecticut
$1.24M
SPS
43
Susquehanna Portfolio Strategies
Pennsylvania
$1.08M
UBS Group
44
UBS Group
Switzerland
$1.06M
Bank of New York Mellon
45
Bank of New York Mellon
New York
$940K
PE
46
Point72 Europe
United Kingdom
$924K
Royal Bank of Canada
47
Royal Bank of Canada
Ontario, Canada
$871K
Two Sigma Investments
48
Two Sigma Investments
New York
$851K
ECM
49
ExodusPoint Capital Management
New York
$743K
SC
50
SummitTX Capital
Texas
$738K