Acorn EnergyACFN +4.48%64 PE Ratio (TTM) is 22.40 as of Jun. 27, 2026, which is 45% below its 10-year median of 40.83. GuruFocus rates ACFN with a GF Score™ of 64/100 and a GF Value™ of $13.60 (Modestly Overvalued). The stock has 4 warning signs investors should review. Among 1,633 Hardware companies, Acorn Energy ranks better than 63.5% on this metric.
The PE Ratio (TTM), or Price-to-Earnings ratio, or P/E Ratio, is a financial ratio used to compare a company's market price to its Earnings per Share (Diluted). As of today (2026-06-27), Acorn Energy's share price is
$17.25.
Acorn Energy's Earnings per Share (Diluted) for the trailing twelve months (TTM) ended in Mar. 2026 was $0.77. Therefore, Acorn Energy's PE Ratio (TTM) for today is 22.40.
The historical rank and industry rank for Acorn Energy's PE Ratio (TTM) or its related term are showing as below:
ACFN'
s PE Ratio (TTM) Range Over the Past 10 Years
Min: 2.25 Med: 40.83 Max: 380
Current: 22.4
During the past 13 years, the highest PE Ratio (TTM) of Acorn Energy was 380.00. The lowest was 2.25. And the median was 40.83.
ACFN's PE Ratio (TTM) is ranked better than 63.5% of 1633
companies
in the Hardware industry
Industry Median: 32.64
vs ACFN: 22.40
Acorn Energy's EPS without NRI for the
three
months ended in Mar. 2026 was $-0.03.
Its EPS without NRI for the trailing twelve months (TTM) ended in Mar. 2026 was $0.77.
During the past 13 years, Acorn Energy's highest 3-Year average EPS without NRI Growth Rate was 80.70% per year. The lowest was -98.30% per year. And the median was 20.60% per year.
Acorn Energy's EPS (Basic) for the
three
months ended in Mar. 2026 was $-0.03.
Its EPS (Basic) for the trailing twelve months (TTM) ended in Mar. 2026 was $0.79.
Acorn Energy (NAS:ACFN) PE Ratio (TTM) Explanation
The PE Ratio (TTM) can be viewed as the number of years it takes for the company to earn back the price you pay for the stock. For example, if a company earns $2 a share per year, and the stock is traded at $30, the PE Ratio (TTM) is 15. Therefore it takes 15 years for the company to earn back the $30 you paid for its stock, assuming the earnings stays constant over the next 15 years.
In real business, earnings never stay constant. If a company can grow its earnings, it takes fewer years for the company to earn back the price you pay for the stock. If a company's earnings decline it takes more years. As a shareholder, you want the company to earn back the price you pay as soon as possible. Therefore, lower P/E stocks are more attractive than higher P/E stocks so long as the PE Ratio (TTM) is positive. Also for stocks with the same PE Ratio (TTM), the one with faster growth business is more attractive.
If a company loses money, the PE Ratio (TTM) becomes meaningless.
To compare stocks with different growth rates, Peter Lynch invented a ratio called PEG Ratio. PEG Ratio is defined as the PE Ratio (TTM) divided by the growth ratio. He thinks a company with a PE Ratio (TTM) equal to its growth rate is fairly valued. Still he said he would rather buy a company growing 20% a year with a PE Ratio (TTM) of 20, instead of a company growing 10% a year with a PE Ratio (TTM) of 10.
Because the PE Ratio (TTM) measures how long it takes to earn back the price you pay, the PE Ratio (TTM) can be applied to the stocks across different industries. That is why it is the one of the most important and widely used indicators for the valuation of stocks.
Investors need to be aware that the PE Ratio (TTM) can be misleading a lot of times, especially when the underlying business is cyclical and unpredictable. As Peter Lynch pointed out, cyclical businesses have higher profit margins at the peaks of the business cycles. Their earnings are high and PE Ratio (TTM)s are artificially low. It is usually a bad idea to buy a cyclical business when the PE Ratio (TTM) is low. A better ratio to identify the time to buy a cyclical businesses is the PS Ratio .
PE Ratio (TTM) can also be affected by non-recurring-items such as the sale of part of businesses. This may increase for the current year or quarter dramatically. But it cannot be repeated over and over. Therefore PE Ratio without NRI is a more accurate indication of valuation than PE Ratio (TTM).
Acorn Energy PE Ratio (TTM) Related Terms
Acorn Energy PE Ratio (TTM) Historical Data
* Premium members only.
The historical data trend for Acorn Energy's PE Ratio (TTM) 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: PE Ratio (TTM) Comparison
For the Scientific & Technical Instruments subindustry, Acorn Energy's PE Ratio (TTM), along with its competitors' market caps and PE Ratio (TTM) 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 PE Ratio (TTM) vs Hardware Industry
For the Hardware industry and Technology sector, Acorn Energy's PE Ratio (TTM) distribution charts can be found below:
* The bar in red indicates where Acorn Energy's PE Ratio (TTM) falls into.
The PE Ratio (TTM), or Price-to-Earnings ratio, or P/E Ratio, is a financial ratio used to compare a company's market price to its Earnings per Share (Diluted). It is the most widely used ratio in the valuation of stocks.
Acorn Energy's PE Ratio (TTM) for today is calculated as
Acorn Energy's Share Price of today is $17.25.
Acorn Energy's Earnings per Share (Diluted) for the trailing twelve months (TTM) ended in Mar. 2026 adds up the quarterly data reported by the company within the most recent 12 months, which was $0.77.
* 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.
It can also be calculated from the numbers for the whole company:
There are at least three kinds of PE Ratio (TTM)s used by different investors. They are Trailing Twelve Month PE Ratio (TTM) or PE Ratio (TTM) (TTM), Forward PE Ratio, or PE Ratio without NRI. A new PE Ratio (TTM) based on inflation-adjusted normalized PE Ratio (TTM) is called Shiller PE Ratio, after Yale professor Robert Shiller.
In the calculation of PE Ratio (TTM), the earnings per share used are the earnings per share over the past 12 months. For Forward PE Ratio, the earnings are the expected earnings for the next twelve months. In the case of PE Ratio without NRI, the reported earnings less the non-recurring items are used.
For Shiller PE Ratio, the earnings of the past 10 years are inflation-adjusted and averaged. Since it looks at the average over the last 10 years, Shiller PE Ratio is also called PE10.
Acorn Energy (ACFN) has a PE Ratio (TTM) of 22.40 as of Jun. 27, 2026. Trailing 12-month P/E ratio is the ratio of share price to a company's trailing 12-month earnings per share. View historical data on Acorn Energy and its competitors. This is 45% below median its historical median of 40.83. Over the past decade, Acorn Energy's PE Ratio (TTM) has ranged from 2.25 to 380.00. According to the industry distribution chart, Acorn Energy ranks #596 out of 1633 companies in the Hardware industry, placing it in the top 36.5%.
Is Acorn Energy's PE Ratio (TTM) too high?
Acorn Energy's current PE Ratio (TTM) of 22.40 is 45% below median its 10-year median of 40.83. Over the past 10 years, this metric has ranged from a low of 2.25 to a high of 380.00. The Hardware industry median PE Ratio (TTM) is 32.64. Acorn Energy's value of 22.40 is 31.4% below this industry median. Based on the distribution chart, Acorn Energy ranks #596 out of 1633 companies in the Hardware industry, which is above the industry midpoint. Overall, Acorn Energy has a GF Score™ of 64/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Acorn Energy's PE Ratio (TTM) compare to LGL and ARAI?
According to the Hardware industry distribution chart, Acorn Energy ranks #596 out of 1633 companies for PE Ratio (TTM). This puts Acorn Energy in the upper half of its industry. The industry median PE Ratio (TTM) is 32.64. Acorn Energy's value of 22.40 is 31.4% below this benchmark. Historically, Acorn Energy's own PE Ratio (TTM) has ranged from 2.25 to 380.00 over the past decade. While the company's 10-year median is 40.83 vs. the industry median of 32.64, 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 PE Ratio (TTM) for a Hardware company?
The median PE Ratio (TTM) among Hardware companies is 32.64, based on 1,633 companies in the industry. Companies in the top quartile (top 25%) have a PE Ratio (TTM) significantly above this median, while those in the bottom quartile fall well below. However, PE Ratio (TTM) should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Acorn Energy's current PE Ratio (TTM) of 22.40 is 31.4% 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 PE Ratio (TTM) mean?
A high PE Ratio (TTM) can signal that a stock is expensive relative to its fundamentals. Trailing 12-month P/E ratio is the ratio of share price to a company's trailing 12-month earnings per share. View historical data on Acorn Energy and its competitors. For the Hardware industry, the median PE Ratio (TTM) is 32.64 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Acorn Energy's current PE Ratio (TTM) is 22.40, which is 45% below median its own 10-year median of 40.83. 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 $17.25 — trading 26.8% above its estimated fair value. The current PE Ratio (TTM) is 22.40, which is 45% below median its 10-year median of 40.83 and 31.4% below the Hardware industry median of 32.64. Acorn Energy's overall GF Score™ is 64/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is PE Ratio (TTM) calculated?
PE Ratio (TTM) is calculated from a company's financial statements. For Acorn Energy (ACFN), the current PE Ratio (TTM) is 22.40 as of Jun. 27, 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 $17.25 is trading 26.8% above its estimated GF Value™ of $13.60.
GuruFocus considers Acorn Energy to be Modestly Overvalued.
Key valuation signals for ACFN:
PE Ratio (TTM): 22.40 (45% below median its 10-year median of 40.83)
GF Value™: $13.60 vs. price of $17.25 (26.8% above fair value)
Industry Position: 31.4% below the Hardware median (#596 of 1633)
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.
64GF Score
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