Aton Green Storage SpA (MIL:ATON) Operating Margin %: -311.37% (As of Dec. 2025)


MIL:ATON Aton Green Storage SpA MIL:ATON
11 GF Score
Price €0.38
GF Value €0.60
Valuation Possible Value Trap
! 8 Warning Signs
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What is Aton Green Storage SpA Operating Margin %?

Aton Green Storage SpA MIL:ATON +2.15% 11 Operating Margin % is -311.37% as of Dec. 2025. GuruFocus rates MIL:ATON with a GF Score™ of 11/100 and a GF Value™ of €0.60 (Possible Value Trap). The stock has 8 warning signs investors should review. Among 3,038 Industrial Products companies, Aton Green Storage SpA ranks worse than 97.96% on this metric.

Operating Margin % is calculated as Operating Income divided by its Revenue. Aton Green Storage SpA's Operating Income for the six months ended in Dec. 2025 was €-7.69 Mil. Aton Green Storage SpA's Revenue for the six months ended in Dec. 2025 was €2.47 Mil. Therefore, Aton Green Storage SpA's Operating Margin % for the quarter that ended in Dec. 2025 was -311.37%.

The historical rank and industry rank for Aton Green Storage SpA's Operating Margin % or its related term are showing as below:

MIL:ATON' s Operating Margin % Range Over the Past 10 Years
Min: -219.09   Med: -9.11   Max: 19.78
Current: -214.64


MIL:ATON's Operating Margin % is ranked worse than
97.96% of 3038 companies
in the Industrial Products industry
Industry Median: 6.53 vs MIL:ATON: -214.64

Aton Green Storage SpA's 5-Year Average Operating Margin % Growth Rate was 0.00% per year.

Aton Green Storage SpA's Operating Income for the six months ended in Dec. 2025 was €-7.69 Mil. Its Operating Income for the trailing twelve months (TTM) ended in Dec. 2025 was €-10.76 Mil.


Aton Green Storage SpA  (MIL:ATON) Operating Margin % Explanation

Just like Gross Margin %, it is important to see a company maintains its operating margin over time. Among the same industry, a company with higher operating margin is more efficient in its operation. It is also more stable during industry slowdown or recessions. Peter Lynch prefers those with higher margins than those with lower margins.


Be Aware

Operating Margin % can be manipulated by adjusting the rate of depreciation, depletion and amortization (DDA).

If a company is facing competition, its Operating Margin % may decline. Often the Operating Margin % declines well before the company's Revenue or even profit decline. Therefore, Operating Margin % is a very important indicator of whether the company is facing problems.

For instance, by 2012, Nokia (NOK)'s problems were well known and its stock had lost more than 90% of its market value since 2007. But Nokia’s Operating Margin % had already been in decline since 2002, although its Earnings per Share (Diluted) were still rising. Investors who paid attention to Operating Margin % would have avoided this huge loss. The same can be said for Research-in-Motion (RIMM).

Therefore, Operating Margin % is a very important screening filter for GuruFocus. GuruFocus's Buffett-Munger screener requires that the profit margin is either consistent or expanding. The Model Portfolio of the Buffett-Munger screener has outperformed the market every year since inception in 2009.


Aton Green Storage SpA Operating Margin % Related Terms


Aton Green Storage SpA Operating Margin % Historical Data

* Premium members only.

The historical data trend for Aton Green Storage SpA's Operating Margin % 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.

Aton Green Storage SpA Operating Margin % Chart

Aton Green Storage SpA Annual Data
Trend Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Operating Margin %
Get a 7-Day Free Trial 15.09 19.78 16.28 -29.51 -219.09

Aton Green Storage SpA Semi-Annual Data
Dec18 Dec19 Jun20 Dec20 Jun21 Dec21 Jun22 Dec22 Jun23 Dec23 Jun24 Dec24 Jun25 Dec25
Operating Margin % Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 20.39 -19.85 -42.18 -120.61 -311.37

MIL:ATON vs VRT, BE, NVT: Operating Margin % Comparison

For the Electrical Equipment & Parts subindustry, Aton Green Storage SpA's Operating Margin %, along with its competitors' market caps and Operating Margin % 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.


Aton Green Storage SpA Operating Margin % vs Industrial Products Industry

For the Industrial Products industry and Industrials sector, Aton Green Storage SpA's Operating Margin % distribution charts can be found below:

* The bar in red indicates where Aton Green Storage SpA's Operating Margin % falls into.


MIL:ATON
11GF Score
Aton Green Storage SpA MIL:ATON
Operating Margin % is just one metric. See GF Score™, valuation, warning signs, and more.
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Aton Green Storage SpA Operating Margin % Calculation

Operating Margin % - also known as operating income margin, operating profit margin and return on sales (ROS) - is the ratio of Operating Income divided by net sales or Revenue, usually presented in percent.

Aton Green Storage SpA's Operating Margin % for the fiscal year that ended in Dec. 2025 is calculated as

Operating Margin %=Operating Income (A: Dec. 2025 ) / Revenue (A: Dec. 2025 )
=-10.981 / 5.012
=-219.09 %

Aton Green Storage SpA's Operating Margin % for the quarter that ended in Dec. 2025 is calculated as

Operating Margin %=Operating Income (Q: Dec. 2025 ) / Revenue (Q: Dec. 2025 )
=-7.694 / 2.471
=-311.37 %

* 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.

Frequently Asked Questions Learn more about Operating Margin % →
What does a Operating Margin % of -311.37% mean?
Aton Green Storage SpA (MIL:ATON) has a Operating Margin % of -311.37% as of Dec. 2025. Operating margin is the ratio of total operating income to net sales. View historical data on Aton Green Storage SpA and its competitors. According to the industry distribution chart, Aton Green Storage SpA ranks #2976 out of 3038 companies in the Industrial Products industry, placing it in the top 98%.
Is Aton Green Storage SpA's Operating Margin % too high?
Aton Green Storage SpA's current Operating Margin % is -311.37%. Based on the distribution chart, Aton Green Storage SpA ranks #2976 out of 3038 companies in the Industrial Products industry, which is in the bottom quartile relative to peers. Overall, Aton Green Storage SpA has a GF Score™ of 11/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Aton Green Storage SpA's Operating Margin % compare to VRT and BE?
According to the Industrial Products industry distribution chart, Aton Green Storage SpA ranks #2976 out of 3038 companies for Operating Margin %. This places Aton Green Storage SpA in the lower half of its industry. The industry median Operating Margin % is 6.53. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Operating Margin % for an Industrial Products company?
The median Operating Margin % among Industrial Products companies is 6.53, based on 3,038 companies in the industry. Companies in the top quartile (top 25%) have a Operating Margin % significantly above this median, while those in the bottom quartile fall well below. However, Operating Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Operating Margin % mean?
A high Operating Margin % can signal that a stock is expensive relative to its fundamentals. Operating margin is the ratio of total operating income to net sales. View historical data on Aton Green Storage SpA and its competitors. For the Industrial Products industry, the median Operating Margin % is 6.53 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Aton Green Storage SpA's current Operating Margin % is -311.37%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Aton Green Storage SpA stock overvalued right now?
Based on GuruFocus' analysis, Aton Green Storage SpA (MIL:ATON) is currently considered Possible Value Trap. The stock's GF Value™ is €0.60, compared to a current price of €0.38 — trading 36.7% below its estimated fair value. The current Operating Margin % is -311.37%. Aton Green Storage SpA's overall GF Score™ is 11/100 with 8 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Operating Margin % calculated?
Operating Margin % is calculated from a company's financial statements. For Aton Green Storage SpA (MIL:ATON), the current Operating Margin % is -311.37% as of Dec. 2025. 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 Aton Green Storage SpA (MIL:ATON) Overvalued in 2026?

Based on GuruFocus' analysis, Aton Green Storage SpA stock appears to be undervalued. The current stock price of €0.38 is trading 36.7% below its estimated GF Value™ of €0.60. GuruFocus considers Aton Green Storage SpA to be Possible Value Trap.

Key valuation signals for MIL:ATON:

  • Operating Margin %: -311.37%
  • GF Value™: €0.60 vs. price of €0.38 (36.7% below fair value)
  • GF Score™: 11/100 with 8 warning signs

No single metric tells the full story. See the MIL:ATON stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Aton Green Storage SpA Business Description

Other Exchanges 6E6:Germany
Address Via Guido Rossa, 5, Spilamberto, Modena, ITA, 41057
Aton Green Storage SpA is an Italian company in the market for the engineering and production of storage systems for photovoltaic systems - Battery Energy Storage System. Its products include RA. Store-K, RA.Store-3, Zon.IS, G.Store, H.Store, Z.Store for new and existing plants; and Axis.T. for electric vehicle charging.
11GF Score

Get the complete analysis for MIL:ATON

Operating Margin % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€0.38
Price
€0.60
GF Value