Aton Green Storage SpA (ATON) fair value: what the stock is really worth
As of Sep 25, 2026: fair value of Aton Green Storage SpA €0.37, price €0.49, upside -24.3%, quality 34 out of 100. Calculated from audited financials with 26 valuation models and 37 quality factors, updated daily.
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Price vs Fair Value
White line = price, green steps = our fair value per fiscal year, dashed = 300-day average. As of Sep 27, 2026.
How to read this chart
60‑month range €0.2620 – €8.38 · fair‑value band €0.2400 – €0.4600 · the €0.4890 price screens above the €0.3700 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). Dashed = 300-day average. As of Sep 27, 2026.
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ATON Green Storage S.p.A. engages in the production and sale of storage systems for photovoltaic systems and battery energy storage system.
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ATON Green Storage S.p.A. engages in the production and sale of storage systems for photovoltaic systems and battery energy storage system. It offers RA.Store-K, a storage system for home environment; RA.Store-3 a photovoltaic accumulator with three-phase hybrid inverter; G.Store and H.Store for wall installation; Zon.E, a storage system that operates in the presence and absence of a photovoltaic system; Z.Store, a storage system for home environment; and Axis.T, a wall-box for charging electric vehicles. The company was incorporated in 2014 and is headquartered in Spilamberto, Italy.
Stock analysis
Aton Green Storage SpA (ATON) currently trades at €0.4890, while our model-based Fair Value estimate is €0.3700, implying the stock looks roughly 32.2% overvalued today.
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Valuation
How firm this estimate is: it rests on 1 models at a data quality of 95/100, which puts the evidence level at low.
Scenario range: €0.2400 (bear) to €0.4600 (bull), the price of €0.4890 sits above it. Bear and bull are the same models on cautious and optimistic assumptions, a range, not a price target.
Quality & growth
The Quality Score stands at 34/100 (below-average quality), in the Industrials sector.
Weak Growth: Revenue is shrinking: the last year, the last three and the last five years are all negative.
Aton Green Storage SpA reported revenue of €5.0M in FY2025 versus €23.1M in FY2021, a compound −31.7%/yr. Reported net income was −€12.3M in FY2025.
Key figures
Market cap €3.7M · P/S ratio 0.37 · EPS (TTM) €−1.64 · Net margin −222% · Return on equity −94.0% · Return on assets (EBIT) 2.2% · Operating margin −299% · Revenue (TTM) €5.5M.
Competitive moat
Our AI-assisted moat analysis scores the competitive advantage at 32 out of 100 (low confidence).
What moves the price
The share trades about 76% below its 52-week high and 87% above its 52-week low, currently below its 200-day average.
For context, the median of 10 Industrials peers we cover trades at −37% fair-value upside, at −24%, ATON screens cheaper than that median.
Fair Value models
Bear €0.2400Fair Value €0.3700Bull €0.4600
Model ⓘEach model values the company its own way (discounted cash flow, earnings, assets, dividends). The fair value above is their evidence-weighted blend, not the output of a single model.Bear ⓘBear = the cautious scenario: the same model computed with conservative anchors (lower growth, margins and valuation multiples). Together with Bull it frames a plausible valuation range, not a price target.BaseBull ⓘBull = the optimistic scenario: the same model computed with favourable anchors (higher growth, margins and valuation multiples). Together with Bear it frames a plausible valuation range, not a price target. If a model's bull case is above four times its base value, the table shows that limit with a > sign (like the overall Bull above): beyond it no assumption holds.Evidence ⓘEvidence = how well-backed THIS model's estimate is for this stock (0–100): how complete and reliable its input data are, and how well the model fits the company. The final Fair Value is an evidence-weighted blend, so better-evidenced models count more. Green ≥70, amber 50–69, grey below 50.
Growth Quality ⓘGrowth is valuable only when reinvestment earns attractive returns (Aswath Damodaran): sustainable growth depends on return on capital, reinvestment and efficiency. Basis: total company revenue over the periods shown on the cards (3Y/5Y/all years), not per share, so a merger can show up as a growth jump; per-share earnings growth is in the value-creation card.0/100
Revenue is shrinking: the last year, the last three and the last five years are all negative.
Revenue growth 1 year
−63.2%
Revenue growth 3 years ⓘMeasures the company's TOTAL revenue from reported annual statements: compound average growth per year (CAGR) from the fiscal year 3, 5 or N years back to the most recent comparable fiscal year. Not per share: buybacks do not change this number, and a merger can appear as a growth jump. Per-share growth (which does include buybacks) is in the value-creation card.
−54.1%
Revenue growth 5 years ⓘMeasures the company's TOTAL revenue from reported annual statements: compound average growth per year (CAGR) from the fiscal year 3, 5 or N years back to the most recent comparable fiscal year. Not per share: buybacks do not change this number, and a merger can appear as a growth jump. Per-share growth (which does include buybacks) is in the value-creation card.
−7.3%
Start year 2020 (pandemic)
Revenue growth 8 years ⓘMeasures the company's TOTAL revenue from reported annual statements: compound average growth per year (CAGR) from the fiscal year 3, 5 or N years back to the most recent comparable fiscal year. Not per share: buybacks do not change this number, and a merger can appear as a growth jump. Per-share growth (which does include buybacks) is in the value-creation card.
+9.5%
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Profit margin (trend) ⓘOperating margin then vs now, from reported annual statements. A falling margin after a boom year is the classic peak-earnings signal: the growth rate then leans on an inflated base.
−12.0% (2020) → −214.7% (2025)
What shareholders gained per year ⓘWe only publish this rate when it is defensible. Reason: fiscal 2025 is a loss year, no rate is defined from a loss
Price, fair value, quality and upside side by side.
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Peer GroupⓘHow this stock ranks against its industry: the green marker is this stock, the band is the typical 25–75% peer range, and the tick is the median.Electrical Equipment & Parts · 551 stocks
Beats the industry median on 3/7 measures
A mixed picture versus its industry peers.
Valuation
Quality Score31 · Bottom 25%
Fair Value upside−24.3% · Above median
Profitability
Return on assets−14.2% · Bottom 25%
Growth and dividend
Revenue growth−56.0% · Bottom 25%
Balance sheet
Debt / equity2.47× · Highest 25%
Valuation Multiplesvs Electrical Equipment & Parts median · lower = cheaper
For bloggers, editors and developers: paste this into your site or blog (a “Custom HTML” block in WordPress), it shows the current fair value and links back here. Free, plain HTML, and welcome. Full data streams (CSV/JSON) at /developers.
Cite: Fair Value Calculator (2026). "Aton Green Storage SpA Fair Value". https://www.fairvalue-calculator.com/stock/ATON
Frequently asked questions
Is Aton Green Storage SpA (ATON) overvalued or undervalued?
As of Sep 27, 2026, our model estimates a fair value of €0.3700 versus a price of €0.4890, about −24% upside (overvalued).
What is the fair value of ATON?
Our model-based fair value for Aton Green Storage SpA is €0.3700 (as of Sep 27, 2026), built from audited fundamentals. The current price: €0.4890.
What is the quality score of ATON?
Aton Green Storage SpA has a Quality Score of 34/100. It measures business quality (profitability, growth, cash flow, balance-sheet strength, investment discipline, share issuance). Market factors such as price momentum and volatility do not enter the number; they are shown separately in the detail view.
What is the price target for Aton Green Storage SpA (ATON)?
Our model-based price target is the fair value of €0.3700 (as of Sep 27, 2026) from 1 valuation models. Cautious scenario €0.2400, optimistic scenario €0.4600. It is a calculation from audited fundamentals, not an analyst target.
What is the Aton Green Storage SpA stock forecast for 2026?
Our models put fair value at €0.3700, about −24% upside versus a price of €0.4890 (overvalued). Cautious scenario €0.2400, optimistic scenario €0.4600. The calculation is refreshed regularly with new filings.
What is the revenue of Aton Green Storage SpA (ATON)?
Aton Green Storage SpA reported trailing-twelve-month revenue of about €5.5M (latest available figure, as of Sep 27, 2026).
What is the intrinsic value of Aton Green Storage SpA (ATON)?
Intrinsic value and fair value mean the same thing: what the business is worth on its numbers, independent of the share price. For Aton Green Storage SpA it is €0.3700 per share (as of Sep 27, 2026), against a price of €0.4890. It is the blended result of 1 valuation models (cash flow, earnings, asset, dividend).
Is Aton Green Storage SpA stock overvalued or undervalued in 2026?
As of Sep 27, 2026, ATON trades above its calculated fair value: price €0.4890, fair value €0.3700, a gap of about −24% (overvalued). The calculation is refreshed with each new quarterly report, so the verdict can change during the year.
Is fair value the same as the market price of ATON?
No. The price is what the market pays today (€0.4890); the fair value is what the company's own numbers justify (€0.3700). For Aton Green Storage SpA the two are €0.1190 per share apart. That gap is exactly why we show both numbers side by side.
How much is Aton Green Storage SpA worth?
The market values Aton Green Storage SpA at about €3.7M (market capitalisation, as of Sep 27, 2026). Per share that is €0.4890; our models calculate a fair value of €0.3700 per share.
What do the bullish and bearish scenarios say about ATON?
Our models span a range for Aton Green Storage SpA: cautious scenario €0.2400, base €0.3700, optimistic €0.4600 per share (as of Sep 27, 2026, price €0.4890). The range comes from different growth and margin assumptions, not from analyst opinions.
How solid is the balance sheet of Aton Green Storage SpA (ATON)?
Balance-sheet figures for Aton Green Storage SpA (as of Sep 27, 2026): return on equity −94.0%, debt of 2.47 per unit of equity. They feed the Quality Score of 34/100, which measures business quality independently of the share price.
How far is ATON from its 52-week high?
Aton Green Storage SpA trades at €0.4890, about 76% below its 52-week high of €2.01 and 87% above the low of €0.2620 (as of Sep 25, 2026). Distance from the high says nothing about value: that is what the fair value of €0.3700 is for.
Which stocks are comparable to Aton Green Storage SpA?
From the same area (Industrials) we also value Contemporary Amperex Technology Co, ABB Ltd, Vertiv Holdings, Prysmian S.p.A, among others. Each of them has its own fair-value calculation on this site using the same models, so the comparison is like for like.
Is Aton Green Storage SpA stock attractive at the current price?
The data as of Sep 27, 2026: price €0.4890, calculated fair value €0.3700 (−24%), Quality Score 34/100, from 1 models. Whether that fits your horizon and risk tolerance is your call. We provide the calculation, not investment advice.
How is the fair value of ATON calculated?
We run Aton Green Storage SpA through 1 models from four families: discounted cash flow, earnings models, asset and balance-sheet models, and dividend models. Every model gets the same audited fundamentals; the result is the weighted average of €0.3700, with the spread shown as a cautious and an optimistic scenario.
Is it still worth investing in stocks now?
The global stock market currently sits 13.9 % above its aggregate fair value. Aton Green Storage SpA itself currently trades above fair value. An expensive market is no reason to stay out and no reason to buy everything at once: keep a broad savings plan running, buy single stocks only with money you can do without, and hold part of your money liquid while the market is high. The full picture including sectors is on is it worth investing now.
What is the share price of Aton Green Storage SpA (ATON)?
The closing price on Sep 25, 2026 was €0.4890. Our model-based fair value is €0.3700, about −24% upside (overvalued). We carry closing prices from our data provider, not a live tick.
What should I pay attention to with Aton Green Storage SpA right now?
The price sits above even our optimistic bull case (€0.4600). The favourable scenario is already priced in. Weak quality (34/100) and above fair value at the same time, the margin of safety is missing on both counts. A fairly wide model range (€0.2400 to €0.4600) leaves room in how you read the outcome. Evidence is limited here (fewer models, shorter history), so the fair value is a rougher estimate than usual.
Key figures of Aton Green Storage SpA
How large is the market capitalisation of Aton Green Storage SpA (ATON)?
The market capitalisation of Aton Green Storage SpA is €3.7M. The stock-market value of the whole company: share price times number of shares. It is what the market asks for the entire business today.
What is the P/S ratio of Aton Green Storage SpA (ATON)?
The price-to-sales ratio of Aton Green Storage SpA is 0.37 (last twelve months). Price to sales: market value relative to yearly revenue. Useful when profit is thin or distorted.
What are the earnings per share of Aton Green Storage SpA (ATON)?
Earnings per share at Aton Green Storage SpA are €−1.64. Earnings per share over the last twelve months: total profit spread across every single share.
What is the net margin of Aton Green Storage SpA (ATON)?
The net margin of Aton Green Storage SpA is −222% (last twelve months). How much of every unit of revenue ends up as profit. 10% means 10 cents of profit per dollar of sales.
What is the return on equity of Aton Green Storage SpA (ATON)?
The return on equity (ROE) of Aton Green Storage SpA is −94.0% (last twelve months). Profit relative to shareholders' equity, how efficiently the company works with its owners' money.
What is the EBIT return on assets of Aton Green Storage SpA (ATON)?
On an EBIT basis the return on assets of Aton Green Storage SpA is 2.2% (avg 5y). Operating profit (EBIT) relative to everything the company owns, as a multi-year average. It describes the business model rather than one good or bad year.
What is the operating margin of Aton Green Storage SpA (ATON)?
The operating margin of Aton Green Storage SpA is −299% (last twelve months). Profit from the core business (before interest and taxes) relative to revenue.
How fast is revenue growing at Aton Green Storage SpA (ATON)?
Revenue at Aton Green Storage SpA is growing −56.0% versus a year earlier (3y avg −54.1%). How much revenue grew versus a year earlier (YoY). The 3-year average next to it puts the single year in context.
How fast are earnings growing at Aton Green Storage SpA (ATON)?
Earnings per share at Aton Green Storage SpA are growing +86.9% versus a year earlier. How much earnings per share grew versus a year earlier.
How much free cash flow does Aton Green Storage SpA (ATON) generate?
The free cash flow of Aton Green Storage SpA is −€1.3M (fiscal year 2025). The cash truly left after running and investing in the business, this is what pays dividends and buybacks.
How much net debt does Aton Green Storage SpA (ATON) carry?
The net debt of Aton Green Storage SpA is €25.7M (fiscal year 2025). Debt minus cash on hand. The note shows how many years of free cash flow could in theory pay it off.
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