Acorn Energy
ACFN
10 hedge funds and large institutions have $1.04M invested in Acorn Energy in 2025 Q4 according to their latest regulatory filings, with 1 funds opening new positions, 5 increasing their positions, 1 reducing their positions, and 5 closing their positions.
400% more repeat investments, than reductions
Existing positions increased: 5 | Existing positions reduced: 1
0.62% less ownership
Funds ownership: 3.35% → 2.73% (-0.62%)
29% less funds holding
Funds holding: 14 → 10 (-4)
60% less capital inflows, than outflows
Capital inflows: $421K | Capital outflows: $1.04M
80% less first-time investments, than exits
New positions opened: 1 | Existing positions closed: 5
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
+$219K |
| 2 |
Vanguard Group
Malvern,
Pennsylvania
|
+$93.8K |
| 3 |
Geode Capital Management
Boston,
Massachusetts
|
+$67.7K |
| 4 |
Morgan Stanley
New York
|
+$38.5K |
| 5 |
Tower Research Capital (TRC)
New York
|
+$1.62K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
-$323K |
| 2 |
Jane Street
New York
|
-$291K |
| 3 |
NG
Northstar Group
New York
|
-$250K |
| 4 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
-$86K |
| 5 |
Osaic Holdings
Scottsdale,
Arizona
|
-$51.7K |
ACFN Hedge Fund Activity: Q4 2025 in Review
10 of the 8,301 institutional investors tracked by Wall St. Rank reported a position in Acorn Energy (ACFN) for Q4 2025, worth a combined $1.04M — down 56% from $2.39M a quarter earlier.
Sellers outnumbered buyers: 5 funds closed out of ACFN and 1 opened new positions — a net loss of 4 holders — while 1 trimmed existing stakes and 5 added.
The largest buyer was Susquehanna International Group, opening a new position worth an estimated $219K. The largest seller was Citadel Advisors, exiting entirely with an estimated $323K sold.
- 10 institutional investors held Acorn Energy (ACFN) as of Q4 2025, down from 14 in Q3 2025.
- Funds reported $1.04M of Acorn Energy stock for Q4 2025, down 56% quarter-over-quarter.
- 1 fund opened new Acorn Energy positions in Q4 2025 and 5 closed out, a net change of -4 holders.
- The largest Acorn Energy buyer in Q4 2025 was Susquehanna International Group, an estimated $219K added.
- The largest Acorn Energy seller in Q4 2025 was Citadel Advisors, an estimated $323K sold.
Based on aggregated 13F filings for Q4 2025.