ACFN · Acorn Energy, Inc.
$19.20
-1.00 (-4.95%)
At close · Jul 28
Market Cap
$48.16M
Shares
2.51M
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 12
Total Value: $1,328,533
Total Shares: 78,149
Institutional Ownership Trend
3 quarters
Holder Concentration
Across 12 13F filers · Δ vs Dec 31, 2025Top Holder
48.2%
−5.0 pts
Top 5
97.0%
−0.8 pts
Top 10
100.0%
−0.0 pts
HHI
3,133
Highly concentrated−503
Quarterly Activity
vs Dec 31, 2025
New
5
Increased
3
Decreased
1
Sold Out
4
Unchanged
3
Holder count:
+1
Institutional value:
+28.7%
Shares held:
+14.3%
Top Buyers
vs Dec 31, 2025| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mega GEODE CAPITAL MANAGEMENT, LLC | +2,409 | 17,909 | |
| Large OSAIC HOLDINGS, INC. | +600 | 1,896 | |
| Small Access Investment Management LLC | +320 | 1,200 |
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mid Tower Research Capital LLC (TRC) | −184 | 170 |
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mega VANGUARD CAPITAL MANAGEMENT LLC | 37,641 | $639,897 | |
| Small Mink Brook Asset Management LLC | 10,000 | $170,000 | |
| Mega VANGUARD FIDUCIARY TRUST CO | 8,368 | $142,256 | |
| Mega UBS Group AG | 693 | $11,781 | |
| Mid Western Wealth Management, LLC | 2 | $34 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mega VANGUARD GROUP INC | 36,362 | $549,065 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | 11,400 | $172,140 | |
| Mega MORGAN STANLEY | 2,312 | $34,911 | |
| Mega BANK OF AMERICA CORP /DE/ | 14 | $211 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $639,897 | 48.17% | 37,641 | Shares | Defined | 2026-05-15 | ||||
| Mega GEODE CAPITAL MANAGEMENT, LLC | $304,453 | 22.92% | 17,909 | Shares | Defined | 2026-05-15 | ||||
| Small Mink Brook Asset Management LLC | $170,000 | 12.80% | 10,000 | Shares | Sole | 2026-04-01 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $142,256 | 10.71% | 8,368 | Shares | Defined | 2026-05-08 | ||||
| Large OSAIC HOLDINGS, INC. | $32,232 | 2.43% | 1,896 | Shares | Defined | 2026-05-15 | ||||
| Small Access Investment Management LLC | $20,400 | 1.54% | 1,200 | Shares | Sole | 2026-05-22 | ||||
| Mega UBS Group AG | $11,781 | 0.89% | 693 | Shares | Defined | 2026-05-05 | ||||
| Large NATIONAL BANK OF CANADA /FI/ Bank | $4,165 | 0.31% | 245 | Shares | Defined | 2026-05-15 | ||||
| Mid Tower Research Capital LLC (TRC) | $2,890 | 0.22% | 170 | Shares | Defined | 2026-05-15 | ||||
| Large Federation des caisses Desjardins du Quebec | $425 | 0.03% | 25 | Shares | Defined | 2026-05-14 | ||||
| Mid Western Wealth Management, LLC | $34 | 0.00% | 2 | Shares | Sole | 2026-05-19 | ||||
| Mega WELLS FARGO & COMPANY/MN | $0 | 0.00% | 0 | Shares | Defined | 2026-05-11 | ||||
| No holders match your search. | ||||||||||