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Companies / Industrials / Acorn Energy, Inc.
ACFN

Acorn Energy, Inc.

IndustrialsProfessional Services
Ticker ACFNWILMINGTON, DEFiscal year ends DecemberBook value per share $3.90Diluted shares 2.5M

Acorn Energy, Inc. (Nasdaq: ACFN) is a holding company focused on technology-driven solutions for energy infrastructure asset management, provided through its OmniMetrix subsidiary. OmniMetrix develops and markets wireless remote monitoring and control systems, connected devices and services for power-generation… From the company’s description.

Over the twelve months to Sep 30, 2026, Acorn Energy, Inc. reported revenue of $9.68M, down 23.3% from a year earlier, and net income of $2.25M. Its operating margin was 7.4%, and operations generated $1.57M in cash. In fiscal 2025, it reported revenue of $11.48M, up 4.5% from fiscal 2024, and net income of $2.54M.

Fiscal year 2025 · ends 12-31Changes are against fiscal 2024The amber dot is the latest twelve months, to 2026-09-30
Sales & profitability
$11.48MFY2025
+4.5% year over year
Last 12 mo $9.68M
17.33%FY2025
−0.3 percentage points
Last 12 mo 7.38%
$2.54MFY2025
−59.8% year over year
Last 12 mo $2.25M
30.42%FY2025
−83.2 percentage points
Last 12 mo 22.49%
Cash & financing
$2.09MFY2025
+130.9% year over year
Last 12 mo $1.57M
$2.06MFY2025
+142.9% year over year
Last 12 mo $1.55M
—
2.5MFY2025
+1.0% year over year
Last 12 mo 2.5M

Margins and return on equity change in ; everything else in percent. Fewer shares and less debt are shown plainly, not as bad news — it depends what you make of buybacks. Dotted labels explain each measure. is shown separately from the annual figures.

What Acorn Energy, Inc. does

In the company’s own words

Acorn Energy, Inc. (Nasdaq: ACFN) is a holding company focused on technology-driven solutions for energy infrastructure asset management, provided through its OmniMetrix subsidiary. OmniMetrix develops and markets wireless remote monitoring and control systems, connected devices and services for power-generation equipment and pipeline cathodic-protection systems. Its customers include generator service organizations and equipment owners, gas utilities, pipeline operators, and organizations that rely on backup generators and other critical industrial assets. The company reports two segments: Power Generation, serving commercial, industrial and residential markets, and Cathodic Protection, serving the gas pipeline market. Products include the Omni and OmniPro generator monitors, Smart Annunciator, Hero 2 and Patriot Plus pipeline monitors, and RAD/RADex devices. In 2025, Acorn generated $11.5 million in revenue and had 27 employees. Its website is http://www.acornenergy.com.

Company details
Sector
Industrials
Industry (SIC)
Professional Services
Headquarters
WILMINGTON, DE
Fiscal year end
December
CIK
880984
SIC
8711

Financial performance, year by year

Fiscal 2011–2025 · USD
$-36.26M$-20.44M$-4.62M$11.21M$27.03M201120122013201420152016201720182019202020212022202320242025Last 12 moLast 12 monthsLast 12 months

The full income statement, balance sheet and cash flow for each of these years — every figure traceable to its filing — is on the Financials tab with a free account.

Ownership

Who owns Acorn Energy, Inc. — and what changed

Funds as of 2026Q2 · superinvestors as of 2026-06-30

9
funds hold it
0 of 35
superinvestors hold it
$1.21M
held by funds, at market
2.8%
of shares held by funds

Largest fund holders · Acorn Energy, Inc.’s weight in each

VANGUARD TOTAL STOCK MARKET INDEX FUND
VTI · VANGUARD INDEX FUNDS
0.00%of fund net assets
VANGUARD EXTENDED MARKET INDEX FUND
VXF · VANGUARD INDEX FUNDS
0.00%of fund net assets
Ultra-Small Company Fund
BRUSX · Bridgeway Funds, Inc.
0.22%of fund net assets
Fidelity Extended Market Index Fund
FSMAX · Fidelity Concord Street Trust
—of fund net assets
iShares Micro-Cap ETF
IWC · iShares Trust
0.01%of fund net assets

Fund ownership is a floor, not a census — pensions, insurers and people holding shares directly are not visible here.

Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.

Could not be determined for this company: bond issues.

Every fund and institutional holder, quarter by quarter, is on the Ownership tab with a free account.

Connected research

Put this business in context.

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  • “How do Acorn Energy, Inc. and its peers compare on margins and cash generation over ten years?”
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