Acorn Energy
ACFN
12 hedge funds and large institutions have $1.89M invested in Acorn Energy in 2026 Q2 according to their latest regulatory filings, with 3 funds opening new positions, 4 increasing their positions, 1 reducing their positions, and 1 closing their positions.
300% more repeat investments, than reductions
Existing positions increased: 4 | Existing positions reduced: 1
200% more first-time investments, than exits
New positions opened: 3 | Existing positions closed: 1
42% more capital invested
Capital invested by funds: $1.33M → $1.89M (+$561K)
20% more funds holding
Funds holding: 10 → 12 (+2)
1.31% more ownership
Funds ownership: 3.12% → 4.42% (+1.3%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
+$284K |
| 2 |
BCM
Bridgeway Capital Management
Houston,
Texas
|
+$218K |
| 3 |
BlackRock
New York
|
+$94K |
| 4 |
Vanguard Capital Management
Malvern,
Pennsylvania
|
+$5.92K |
| 5 |
Geode Capital Management
Boston,
Massachusetts
|
+$4.51K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Osaic Holdings
Scottsdale,
Arizona
|
-$26.9K |
| 2 |
UBS Group
Zurich,
Switzerland
|
-$11.8K |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
1
Vanguard Capital Management
Malvern,
Pennsylvania
| $647K | +$5.92K | +340 | +0.9% |
|
|
2
Geode Capital Management
Boston,
Massachusetts
| $310K | +$4.51K | +259 | +1% |
|
|
3
Citadel Advisors
Miami,
Florida
| $278K | +$284K | +16,321 | New |
|
|
BCM
4
Bridgeway Capital Management
Houston,
Texas
| $213K | +$218K | +12,500 | New |
|
|
MBAM
5
Mink Brook Asset Management
West Palm Beach,
Florida
| $170K | – | – | – |
|
6
Vanguard Fiduciary Trust
Malvern,
Pennsylvania
| $144K | +$1.04K | +60 | +0.7% |
|
|
7
BlackRock
New York
| $92K | +$94K | +5,403 | New |
|
|
AIM
8
Access Investment Management
Atlanta,
Georgia
| $20.4K | – | – | – |
|
|
9
Osaic Holdings
Scottsdale,
Arizona
| $5.97K | -$26.9K | -1,545 | -81% |
|
|
TRCT
10
Tower Research Capital (TRC)
New York
| $5.57K | +$2.73K | +157 | +92% |
|
11
National Bank of Canada
Montreal,
Quebec, Canada
| $4.12K | – | – | – |
|
|
FDCDDQ
12
Federation des caisses Desjardins du Quebec
Levis,
Quebec, Canada
| $426 | – | – | – |
|
13
Wells Fargo
San Francisco,
California
| $3 | – | – | – |
|
|
14
UBS Group
Zurich,
Switzerland
| – | -$11.8K | -693 | Closed |
|
ACFN Hedge Fund Activity: Q2 2026 in Review
12 of the 8,223 institutional investors tracked by Wall St. Rank reported a position in Acorn Energy (ACFN) for Q2 2026, worth a combined $1.89M — up 42% from $1.33M a quarter earlier.
Buyers outnumbered sellers: 3 funds opened new ACFN positions and 1 closed out — a net gain of 2 holders — while 4 added to existing stakes and 1 trimmed.
The largest buyer was Citadel Advisors, opening a new position worth an estimated $284K. The largest seller was Osaic Holdings, cutting an estimated $26.9K.
- 12 institutional investors held Acorn Energy (ACFN) as of Q2 2026, up from 10 in Q1 2026.
- Funds reported $1.89M of Acorn Energy stock for Q2 2026, up 42% quarter-over-quarter.
- 3 funds opened new Acorn Energy positions in Q2 2026 and 1 closed out, a net change of +2 holders.
- The largest Acorn Energy buyer in Q2 2026 was Citadel Advisors, an estimated $284K added.
- The largest Acorn Energy seller in Q2 2026 was Osaic Holdings, an estimated $26.9K sold.
Based on aggregated 13F filings for Q2 2026.