Acorn EnergyACFN -2.32%65 Piotroski F-Score is 4 as of Jun. 25, 2026, which is 20% below its 10-year median of 5.00. GuruFocus rates ACFN with a GF Score™ of 65/100 and a GF Value™ of $13.60 (Modestly Overvalued). The stock has 4 warning signs investors should review. Among 2,424 Hardware companies, Acorn Energy ranks worse than 62.25% on this metric.
The zones of discrimination were as such:
Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Acorn Energy has an F-score of 4 indicating the company's financial situation is typical for a stable company.
The historical rank and industry rank for Acorn Energy's Piotroski F-Score or its related term are showing as below:
ACFN'
s Piotroski F-Score Range Over the Past 10 Years
Min: 2 Med: 5 Max: 8
Current: 4
During the past 13 years, the highest Piotroski F-Score of Acorn Energy was 8. The lowest was 2. And the median was 5.
Acorn Energy (NAS:ACFN) Piotroski F-Score Explanation
The developer of the system is Joseph D. Piotroski is relatively unknown accounting professor who shuns publicity and rarely gives interviews.
He graduated from the University of Illinois with a B.S. in accounting in 1989, received an M.B.A. from Indiana University in 1994. Five years later, in 1999, after earning a Ph.D. in accounting from the University of Michigan, he became an associate professor of accounting at the University of Chicago.
He wanted to see if he can develop a system (using a simple nine-point scoring system) that can increase the returns of a strategy of investing in low price to book (referred to in the paper as high book to market) value companies.
What he found was something that exceeded his most optimistic expectations.
Buying only those companies that scored highest (8 or 9) on his nine-point scale, or F-Score as he called it, over the 20 year period from 1976 to 1996 led to an average out-performance over the market of 13.4%.
Even more impressive were the results of a strategy of investing in the highest F-Score companies (8 or 9) and shorting companies with the lowest F-Score (0 or 1).
Over the same period from 1976 to 1996 (20 years) this strategy led to an average yearly return of 23%, substantially outperforming the average S&P 500 index return of 15.83% over the same period.
Acorn Energy Piotroski F-Score Related Terms
Acorn Energy Piotroski F-Score Historical Data
* Premium members only.
The historical data trend for Acorn Energy's Piotroski F-Score can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
ACFN vs LGL, ARAI, AATC: Piotroski F-Score Comparison
For the Scientific & Technical Instruments subindustry, Acorn Energy's Piotroski F-Score, along with its competitors' market caps and Piotroski F-Score data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Acorn Energy Piotroski F-Score vs Hardware Industry
For the Hardware industry and Technology sector, Acorn Energy's Piotroski F-Score distribution charts can be found below:
* The bar in red indicates where Acorn Energy's Piotroski F-Score falls into.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
*Note: If the latest quarterly/semi-annual/annual total assets data is 0, then we will use previous quarterly/semi-annual/annual data for all the items in the balance sheet.
Profitability
Question 1. Return on Assets (ROA)
Net income before extraordinary items for the year divided by Total Assets at the beginning of the year.
Score 1 if positive, 0 if negative.
Acorn Energy's current Net Income (TTM) was 1.97.
==> Positive ==> Score 1.
Question 2. Cash Flow Return on Assets (CFROA)
Net cash flow from operating activities (operating cash flow) divided by Total Assets at the beginning of the year.
Acorn Energy's return on assets of this year was 0.1768457. Acorn Energy's return on assets of last year was 1.3717975.
==> Last year is higher ==> Score 0.
Question 4. Quality of Earnings (Accrual)
Compare Cash flow return on assets (2) to return on assets (1)
Acorn Energy's current ratio of this year was 1.89537223. Acorn Energy's current ratio of last year was 1.39004056.
==> This year's current ratio is higher. ==> Score 1.
Question 7. Change in Shares in Issue
Compare the number of shares in issue this year, to the number in issue last year.
Score 0 if there is larger number of shares in issue this year, 1 otherwise.
Acorn Energy's number of shares in issue this year was 2.506. Acorn Energy's number of shares in issue last year was 2.498.
==> There is larger number of shares in issue this year. ==> Score 0.
Efficiency
Question 8. Change in Gross Margin
Compare this year's gross margin (Gross Profit divided by sales) to last year's.
Score 1 if this year's gross margin is higher, 0 if it's lower.
Acorn Energy's gross margin of this year was 0.78005091. Acorn Energy's gross margin of last year was 0.73075636.
==> This year's gross margin is higher. ==> Score 1.
Question 9. Change in asset turnover
Compare this year's asset turnover (total sales for the year divided by total assets at the beginning of the year) to last year's asset turnover ratio.
Score 1 if this year's asset turnover ratio is higher, 0 if it's lower
Acorn Energy's asset turnover of this year was 0.9526675. Acorn Energy's asset turnover of last year was 2.44968231.
==> Last year's asset turnover is higher ==> Score 0.
Evaluation
Piotroski F-Score
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Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Acorn Energy has an F-score of 4 indicating the company's financial situation is typical for a stable company.
Acorn Energy (ACFN) has a Piotroski F-Score of 4 as of Jun. 25, 2026. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on Acorn Energy and its competitors. This is 20% below median its historical median of 5.00. Over the past decade, Acorn Energy's Piotroski F-Score has ranged from 2.00 to 8.00. According to the industry distribution chart, Acorn Energy ranks #1509 out of 2424 companies in the Hardware industry, placing it in the top 62.3%.
Is Acorn Energy's Piotroski F-Score too high?
Acorn Energy's current Piotroski F-Score of 4 is 20% below median its 10-year median of 5.00. Over the past 10 years, this metric has ranged from a low of 2.00 to a high of 8.00. The Hardware industry median Piotroski F-Score is 5.00. Acorn Energy's value of 4 is 20% below this industry median. Based on the distribution chart, Acorn Energy ranks #1509 out of 2424 companies in the Hardware industry, which is below the industry midpoint. Overall, Acorn Energy has a GF Score™ of 65/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Acorn Energy's Piotroski F-Score compare to LGL and ARAI?
According to the Hardware industry distribution chart, Acorn Energy ranks #1509 out of 2424 companies for Piotroski F-Score. This places Acorn Energy in the lower half of its industry. The industry median Piotroski F-Score is 5.00. Acorn Energy's value of 4 is 20% below this benchmark. Historically, Acorn Energy's own Piotroski F-Score has ranged from 2.00 to 8.00 over the past decade. While the company's 10-year median is 5.00 vs. the industry median of 5.00, Acorn Energy has consistently been below the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Piotroski F-Score for a Hardware company?
The median Piotroski F-Score among Hardware companies is 5.00, based on 2,424 companies in the industry. Companies in the top quartile (top 25%) have a Piotroski F-Score significantly above this median, while those in the bottom quartile fall well below. However, Piotroski F-Score should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Acorn Energy's current Piotroski F-Score of 4 is 20% below the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Piotroski F-Score mean?
A high Piotroski F-Score can signal that a stock is expensive relative to its fundamentals. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on Acorn Energy and its competitors. For the Hardware industry, the median Piotroski F-Score is 5.00 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Acorn Energy's current Piotroski F-Score is 4, which is 20% below median its own 10-year median of 5.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Acorn Energy stock overvalued right now?
Based on GuruFocus' analysis, Acorn Energy (ACFN) is currently considered Modestly Overvalued. The stock's GF Value™ is $13.60, compared to a current price of $16.41 — trading 20.7% above its estimated fair value. The current Piotroski F-Score is 4, which is 20% below median its 10-year median of 5.00 and 20% below the Hardware industry median of 5.00. Acorn Energy's overall GF Score™ is 65/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Piotroski F-Score calculated?
Piotroski F-Score is calculated from a company's financial statements. For Acorn Energy (ACFN), the current Piotroski F-Score is 4 as of Jun. 25, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Acorn Energy (ACFN) Overvalued in 2026?
Based on GuruFocus' analysis, Acorn Energy stock appears to be overvalued.
The current stock price of $16.41 is trading 20.7% above its estimated GF Value™ of $13.60.
GuruFocus considers Acorn Energy to be Modestly Overvalued.
Key valuation signals for ACFN:
Piotroski F-Score: 4 (20% below median its 10-year median of 5.00)
GF Value™: $13.60 vs. price of $16.41 (20.7% above fair value)
Industry Position: 20% below the Hardware median (#1509 of 2424)
No single metric tells the full story. See the ACFN stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Acorn Energy Inc is a holding company that focuses on technology-driven solutions for energy infrastructure asset management. The company operates through two segments namely, the PG segment and the CP segment. PG segment provides wireless remote monitoring and control systems and services for critical assets as well as Internet of Things applications which account for the majority of the revenue. CP segment is engaged in providing remote monitoring of cathodic protection systems on gas pipelines for gas utilities and pipeline companies.
65GF Score
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