ACFN Acorn Energy, Inc.
Acorn Energy, Inc. (ACFN) Institutional Ownership
What the institutions did with ACFN last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeLargest holders
| Manager | Shares | % of reported |
|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC | 38.0K | 34.2% |
| GEODE CAPITAL MANAGEMENT, LLC | 18.2K | 16.4% |
| CITADEL ADVISORS LLC | 16.3K | 14.7% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 12.5K | 11.3% |
| Mink Brook Asset Management LLC | 10.0K | 9.0% |
| VANGUARD FIDUCIARY TRUST CO | 8.4K | 7.6% |
| BlackRock, Inc. | 5.4K | 4.9% |
| Access Investment Management LLC | 1.2K | 1.1% |
| OSAIC HOLDINGS, INC. | 351 | 0.3% |
| Tower Research Capital LLC (TRC) | 327 | 0.3% |
| NATIONAL BANK OF CANADA /FI/ | 245 | 0.2% |
| Federation des caisses Desjardins du Quebec | 25 | 0.0% |
| HUNTINGTON NATIONAL BANK | 1 | 0.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| CITADEL ADVISORS LLC | New | 0 | 16.3K | +16.3K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | New | 0 | 12.5K | +12.5K |
| BlackRock, Inc. | New | 0 | 5.4K | +5.4K |
| OSAIC HOLDINGS, INC. | Reduced | 1.9K | 351 | -1.5K |
| UBS Group AG | Sold Out | 693 | 0 | -693 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 37.6K | 38.0K | +340 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 17.9K | 18.2K | +259 |
| Tower Research Capital LLC (TRC) | Increased | 170 | 327 | +157 |
| VANGUARD FIDUCIARY TRUST CO | Increased | 8.4K | 8.4K | +60 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.