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Aton Green Storage SpA (ATON) fair value: what the stock is really worth

As of Nov 10, 2026: fair value (intrinsic value) of Aton Green Storage SpA stock €0.46, price €0.54, that is 14.4% below the price, quality 29 out of 100. Rating: overvalued. The value is an estimate: none of our valuation models currently carries, it draws on revenue and assets compared with similar companies. Updated daily.

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Industrials IT · ISIN IT0005449464

AG Aton Green Storage SpA logo Thin data Nov 10, 2026

Aton Green Storage SpA

ATON · MI
Expensive, weak quality

Our calculation puts a fair price 14% below what the stock costs today.

Revenue last quarter 10% below a year ago.
Fair value €0.4641 · Overvalued
Quality 29/100
Weak Growth (revenue 5y −7.3 %/yr in EUR)
High debt
Negative free cash flow
Trails peers (3/9)
Narrow moat 8/100 · thin data
Thin data
Estimate
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26 valuation models 8 families, DCF to NCAV 37 quality factors margins, balance sheet, cashflow, debt 6 AI factors moat, what no ratio measures 2,000+ data points verified, per stock, median

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Price vs Fair Value

€8.38 €0.2620 Fair Value €0.4641 Sep 2021 Nov 2026

White line = price, green steps = our fair value per fiscal year. As of Nov 10, 2026.

How to read this chart

60‑month range €0.2620 – €8.38 · fair‑value band €0.3481 – €0.5801 · the €0.5420 price screens above the €0.4641 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). As of Nov 10, 2026.

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Company profile

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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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 €0.5420, while our estimate is €0.4641, 14% below the price, so the stock looks overvalued today.

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Valuation

None of our valuation models currently carries for this company, usually because of losses or heavy investment. The estimate draws on revenue and assets compared with similar companies and is less precise than a model-based fair value.

Scenario range: €0.3481 (bear) to €0.5801 (bull), the price of €0.5420 sits inside 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 29/100 (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 €4.1M Micro · P/S ratio 0.66 · EPS (TTM) €−1.70 · Return on equity −144% · Return on assets (EBIT) 2.2% (5-year average) · Operating margin −174% · Revenue (TTM) €4.8M · Revenue growth (YoY) −9.9%.

Competitive moat

Our AI-assisted moat analysis scores the competitive advantage at 8 out of 100 (low confidence).

What moves the price

The share trades about 70% below its 52-week high and 107% above its 52-week low, currently below its 200-day average.

For context, the median of 10 Industrials peers we cover trades at −13% fair-value upside, at −14%, ATON screens richer than that median.

Fair Value

Bear €0.3481 Fair Value €0.4641 Bull €0.5801
Price €0.5420 · Downside -14.4%
Estimate. None of our valuation models currently carries for this company, usually because of losses or heavy investment. The estimate draws on revenue and assets compared with similar companies and is less precise than a model-based fair value.

Quality Score breakdown

Overall quality 29/100

It rates the business: profits, how they develop, real cash, balance sheet, investing and share count.

Profitability 0
How much profit the company makes from its sales and capital
Quality Growth 1
Are margins and returns getting better?
Cashflow 25
Do the profits arrive as real cash?
Financial strength 6
Debt, balance sheet and risk of trouble
Investment 100
Does it invest with discipline instead of growing at any price?
Low Volatility 43
How calm the share price moves, does not count
Price momentum 52
Price momentum of the last 3 to 12 months, does not count
Near the 52-week high 9
Distance to the 52-week high, does not count
New shares 82
Buys back shares or issues new ones?

Open the full quality analysis →

Revenue & earnings trend

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%
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
not computed

ATON screens overvalued: fair value 14% below the price. Compare with Contemporary Amperex Technology Co →

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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 · 590 stocks

Beats the industry median on 3/8 measures
Overall it trails its industry peers.
Valuation
Quality Score 29 · Bottom 25%
Fair Value upside −14.4% · Above median
Profitability
Return on assets −32.9% · Bottom 25%
Operating margin (12 months) −173.9% · Bottom 25%
Growth and dividend
Revenue growth (quarter YoY) −9.9% · Bottom 25%
Balance sheet
Debt / equity 2.47× · Highest 25%

Valuation Multiplesvs Electrical Equipment & Parts median · lower = cheaper

P/B 0.58× · Cheapest 25%
P/S (12 months) 0.85× · Cheapest 25%

Strength profile in five axes (Snowflake)

VALUEFUTUREPASTHEALTHDIVIDEND
This stock
VALUEFUTUREPASTHEALTHDIVIDEND
Sector peers
VALUE (fair-value potential)14 · sector 0
FUTURE (revenue growth)0 · sector 66
PAST (return on equity)0 · sector 25
HEALTH (low debt)0 · sector 97
DIVIDEND (yield)0 · sector 23

Context: sector, industry, market

Values & ESG

Does this company touch areas you may want to avoid? The classification is inferred from sector and industry.

None of the checked exposures detected

Similar stocks

10 more Electrical Equipment & Parts stocks, each showing price versus our Fair Value estimate.

Stock Price Fair Value vs Fair Value Compare
Contemporary Amperex Technology Co 300750 ¥249.95 ¥648.35 +159% vs ATON
Sungrow Power Supply Co 300274 ¥79.60 ¥182.32 +129% vs ATON
NARI Technology Co 600406 ¥23.40 ¥29.39 +26% vs ATON
Vertiv Holdings VRT $194.22 $178.64 −8% vs ATON
Samsung SDI Co 006400 456,000 KRW 395,019 KRW −13% vs ATON
Legrand SA LR €135.60 €82.49 −39% vs ATON
Prysmian S.p.A PRY €107.20 €64.29 −40% vs ATON
ABB Ltd ABBN CHF 68.98 CHF 29.81 −57% vs ATON
Delta Electronics (Thailand) Public Company DELTA 193.00 THB 39.14 THB −80% vs ATON
LG Energy Solution, Ltd 373220 330,500 KRW 53,325 KRW −84% vs ATON

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Aton Green Storage SpA: fair value per Fair Value Calculator

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 Nov 10, 2026, our estimate of fair value is €0.4641 versus a price of €0.5420, about 14% lower (overvalued).
What is the fair value of ATON?
Our estimate for Aton Green Storage SpA is €0.4641 (as of Nov 10, 2026), built from audited fundamentals. The current price: €0.5420.
What is the quality score of ATON?
Aton Green Storage SpA has a Quality Score of 29/100. 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 calculated price target is the estimate of €0.4641 (as of Nov 10, 2026). Cautious scenario €0.3481, optimistic scenario €0.5801. It is an estimate from revenue and assets compared with similar companies, because none of our valuation models currently carries, not an analyst target.
What is the Aton Green Storage SpA stock forecast for 2026?
Our estimate puts fair value at €0.4641, about 14% lower versus a price of €0.5420 (overvalued). Cautious scenario €0.3481, optimistic scenario €0.5801. 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 €4.8M (latest available figure, as of Nov 10, 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 €0.4641 per share (as of Nov 10, 2026), against a price of €0.5420.
Is Aton Green Storage SpA stock overvalued or undervalued in 2026?
As of Nov 10, 2026, ATON trades above its calculated fair value: price €0.5420, fair value €0.4641, a gap of about −14% (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 (€0.5420); the fair value is what the company's own numbers justify (€0.4641). For Aton Green Storage SpA the two are €0.0779 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 €4.1M (market capitalisation, as of Nov 10, 2026). Per share that is €0.5420; our models calculate a fair value of €0.4641 per share.
What do the bullish and bearish scenarios say about ATON?
Our models span a range for Aton Green Storage SpA: cautious scenario €0.3481, base €0.4641, optimistic €0.5801 per share (as of Nov 10, 2026, price €0.5420). 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 Nov 10, 2026): return on equity −144.0%, debt of 2.47 per unit of equity. They feed the Quality Score of 29/100, which measures business quality independently of the share price.
How far is ATON from its 52-week high?
Aton Green Storage SpA trades at €0.5420, about 70% below its 52-week high of €1.84 and 107% above the low of €0.2620 (as of Nov 10, 2026). Distance from the high says nothing about value: that is what the fair value of €0.4641 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, Delta Electronics (Thailand) Public Company, 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 Nov 10, 2026: price €0.5420, calculated fair value €0.4641 (−14%), Quality Score 29/100. Whether that fits your horizon and risk tolerance is your call. We provide the calculation, not investment advice.
Is it still worth investing in stocks now?
The global stock market currently sits 15.1% 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 Nov 10, 2026 was €0.5420. Our estimate is €0.4641, about 14% lower (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?
Evidence is limited here (fewer models, shorter history), so the fair value is a rougher estimate than usual. The price sits in the upper half of our model range, so the margin of safety is thin. Read the verdict with care: some models are missing inputs, so the estimate scatters more 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 €4.1M. 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 0.66 (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 €−1.70. Earnings per share over the last twelve months: total profit spread across every single share.
What is the return on equity of Aton Green Storage SpA (ATON)?
The return on equity (ROE) of Aton Green Storage SpA is −144% (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 −174% (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 −9.9% 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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