ACFN · Acorn Energy, Inc. · Holdings
Market Cap
$54.25M
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: 14
Total Value: $1,889,475
Total Shares: 110,950
Institutional Ownership Trend
26 quarters
Holder Concentration
Across 14 13F filers · Δ vs Mar 31, 2026Top Holder
34.2%
−13.9 pts
Top 5
85.6%
−11.4 pts
Top 10
99.8%
−0.2 pts
HHI
1,947
Moderately concentrated−1,185
Quarterly Activity
vs Mar 31, 2026
New
3
Increased
4
Decreased
1
Sold Out
2
Unchanged
6
Holder count:
+1
Institutional value:
+42.2%
Shares held:
+42.0%
Top Buyers
vs Mar 31, 2026| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mega VANGUARD CAPITAL MANAGEMENT LLC | +340 | 37,981 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC | +259 | 18,168 | |
| Mid Tower Research Capital LLC (TRC) | +157 | 327 | |
| Mega VANGUARD FIDUCIARY TRUST CO | +60 | 8,428 |
Top Sellers
vs Mar 31, 2026| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Large OSAIC HOLDINGS, INC. | −1,545 | 351 |
Top New Positions
vs Mar 31, 2026| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mega CITADEL ADVISORS LLC | 16,321 | $277,946 | |
| Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC | 12,500 | $212,875 | |
| Mega BlackRock, Inc. | 5,403 | $92,012 |
Top Sold-Out Positions
vs Mar 31, 2026| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mega UBS Group AG | 693 | $11,781 | |
| Mid Western Wealth Management, LLC | 2 | $34 |