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.
300% more repeat investments, than reductions
Existing positions increased: 16 | Existing positions reduced: 4
180% more first-time investments, than exits
New positions opened: 14 | Existing positions closed: 5
27% more funds holding
Funds holding: 33 → 42 (+9)
27% more capital invested
Capital invested by funds: $7.3M → $9.27M (+$1.97M)
1.07% more ownership
Funds ownership: 8.08% → 9.15% (+1.1%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Goldman Sachs
New York
|
+$428K |
| 2 |
Vanguard Group
Malvern,
Pennsylvania
|
+$263K |
| 3 |
State Street
Boston,
Massachusetts
|
+$172K |
| 4 |
Jane Street
New York
|
+$164K |
| 5 |
BlackRock
New York
|
+$160K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Bank of New York Mellon
New York
|
-$174K |
| 2 |
VF
Virtu Financial
New York
|
-$110K |
| 3 |
CSS
Cubist Systematic Strategies
Stamford,
Connecticut
|
-$78.9K |
| 4 |
HF
HRT Financial
New York
|
-$52K |
| 5 |
Squarepoint
New York
|
-$25.1K |
CTM Hedge Fund Activity: Q3 2025 in Review
42 of the 7,641 institutional investors tracked by Wall St. Rank reported a position in Castellum (CTM) for Q3 2025, worth a combined $9.27M — up 27% from $7.3M a quarter earlier.
Buyers outnumbered sellers: 14 funds opened new CTM positions and 5 closed out — a net gain of 9 holders — while 16 added to existing stakes and 4 trimmed.
The largest buyer was Goldman Sachs, opening a new position worth an estimated $428K. The largest seller was Bank of New York Mellon, cutting an estimated $174K.
- 42 institutional investors held Castellum (CTM) as of Q3 2025, up from 33 in Q2 2025.
- Funds reported $9.27M of Castellum stock for Q3 2025, up 27% quarter-over-quarter.
- 14 funds opened new Castellum positions in Q3 2025 and 5 closed out, a net change of +9 holders.
- The largest Castellum buyer in Q3 2025 was Goldman Sachs, an estimated $428K added.
- The largest Castellum seller in Q3 2025 was Bank of New York Mellon, an estimated $174K sold.
Based on aggregated 13F filings for Q3 2025.