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Castellum

42 hedge funds and large institutions have $9.27M invested in Castellum in 2025 Q3 according to their latest regulatory filings, with 14 funds opening new positions, 16 increasing their positions, 4 reducing their positions, and 5 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
42
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
Puts
Net Calls
Net Calls Change

Top Buyers

1 +$428K
2 +$263K
3 +$172K
4
Jane Street
Jane Street
New York
+$164K
5
BlackRock
BlackRock
New York
+$160K

Top Sellers

1 -$174K
2 -$110K
3 -$78.9K
4
HF
HRT Financial
New York
-$52K
5
Squarepoint
Squarepoint
New York
-$25.1K