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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