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Who owns Acorn Energy (ACFN) stock

13 funds reported Acorn Energy (ACFN) shares in their latest 13F filings, worth $2.4M in all. The largest holder is Vanguard Capital Management LLC ($647K). Last quarter 7 funds added to their stakes and 2 cut them.

Largest holders of ACFN (13F)Largest holders of ACFN (13F)Vanguard Capital Management LLC$647KVanguard Group$549KGeode Capital Management, LLC$310KCitadel Advisors LLC$278KBridgeway Capital Management, LLC$213KMink Brook Asset Management LLC$170KVanguard Fiduciary Trust$144KBlackRock$92KAccess Investment Management LLC$22KOsaic Holdings$6K

Largest holders (13F)

FundSharesValueChangeQuarter
Vanguard Capital Management LLC37,981$647Kincrease2026-06-30
Vanguard Group36,362$549Kincrease2025-12-31
Geode Capital Management, LLC18,168$310Kincrease2026-06-30
Citadel Advisors LLC16,321$278Knew2026-06-30
Bridgeway Capital Management, LLC12,500$213Knew2026-06-30
Mink Brook Asset Management LLC10,000$170Kunchanged2026-06-30
Vanguard Fiduciary Trust8,428$144Kincrease2026-06-30
BlackRock5,403$92Knew2026-06-30
Access Investment Management LLC1,100$22Kdecrease2026-09-30
Osaic Holdings351$6Kdecrease2026-06-30
Tower Research Capital LLC327$6Kincrease2026-06-30
Federation des caisses Desjardins du Quebec25$426unchanged2026-06-30
Wells Fargo0$3unchanged2026-06-30

Acorn Energy's latest quarter

Acorn Energy, Q3 2026: revenue $2.6M (+5% year over year), operating margin 7.3%, net earnings $940K, operating cash flow $999K. The chart follows the revenue to costs, profit and cash.

Questions

Who owns the most ACFN stock?

By the latest 13F filings: Vanguard Capital Management LLC ($647K); Vanguard Group ($549K); Geode Capital Management, LLC ($310K); Citadel Advisors LLC ($278K); Bridgeway Capital Management, LLC ($213K).

What is the short interest in ACFN?

32,292 shares were sold short at the 2026-10-15 settlement, -1.15% of the float.

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Updated Nov 8, 2026. Read automatically from SEC filings and public data; errors are possible. Not investment advice.