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Annexon

144 hedge funds and large institutions have $309M invested in Annexon in 2025 Q3 according to their latest regulatory filings, with 33 funds opening new positions, 51 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:

1.38% more ownership

Funds ownership: 90.88%92.26% (+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
144
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
26
$2.96M
27
$2.51M
28
$2.41M
29
$2.4M
30
$2.34M
31
$2.3M
32
$2.08M
33
$1.95M
34
$1.78M
35
$1.75M
36
$1.75M
37
$1.62M
38
$1.48M
39
$1.47M
40
$1.45M
41
$1.25M
42
$1.24M
43
$1.08M
44
$1.06M
45
$940K
46
$924K
47
$871K
48
$851K
49
$743K
50
$738K