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Soitec SA (SOI) fair value: what the stock is really worth

As of Sep 25, 2026: fair value of Soitec SA €85.24, price €143, upside -40.4%, quality 48 out of 100. Calculated from audited financials with 26 valuation models and 37 quality factors, updated daily.

  1. Fair value above price? No
  2. Good quality? No
  3. Add to watchlist

Technology · FR · ISIN FR0013227113

SS Soitec SA logo Some data Sep 26, 2026

Soitec SA

SOI · PA

Weakest SetupStrongly overvalued and low quality.

!Fair value €85.24 · Strongly overvalued (−40%)
!Quality 48/100
!Weak Growth (revenue 5y +0.3 %/yr)
!Loss-making · -37.2% net margin (TTM)
✓Low debt · generates free cash flow
!Trails peers (1/13)
!Narrow moat 16/100
!Evidence only medium, so the estimate is less certain

What runs behind every stock

69 individual criteria per stock, every one traceable See the method →

Price vs Fair Value

€241.20 €22.95 Fair Value €85.24 Aug 2021 Sep 2026

White line = price, green steps = our fair value per fiscal year, dashed = 300-day average. As of Sep 26, 2026.

How to read this chart

60‑month range €22.95 – €241.20 · fair‑value band €65.42 – €109.80 · the €143.05 price screens above the €85.24 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). Dashed = 300-day average. As of Sep 26, 2026.

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Company profile

Soitec SA develops and manufactures semiconductor materials in Asia, Europe, and the United States.

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Soitec SA develops and manufactures semiconductor materials in Asia, Europe, and the United States. The company offers CONNECT Radio Frequency Silicon-on-Insulator for smartphone front-end modules; CONNECT FD SOI for engineered substrates; CONNECT Piezoelectric-on-Insulator RF filters for smartphones; and CONNECT RF gallium nitride which increases the frequency system efficiency and power density of next generation sub 6GHz and mmWave-band cellular 5G infrastructures and mobile devices. It also provides Auto Power-SOI products for the automotive and industrial markets; Auto Smartsic for cost optimization of electric vehicles and industrial applications; and Photonics SOI that integrates photonic components on a silicon-on-insulator (SOI) substrate to enhance optical communication capabilities; as well as AUTO FD-SOI for automotive radar and processors. In addition, the company offers Imager-SOI, a compact solution for high-resolution 3D images and small form factor; PD -SOI offers complex computation capabilities and functionalities in cloud computing and network equipment; FD-SOI technology which provides the optimal balance between digital performance, mixed signal/RF compatibility, and power consumption and cost; and MEMS-SOI, an insulating oxide layer, and a supporting handle layer. Its products are used to manufacture smartphones, computers, servers, industrial and medical equipment, electric and autonomous vehicles, connected objects, robots or automation systems. Soitec SA was incorporated in 1992 and is headquartered in Bernin, France.

Stock analysis

Soitec SA (SOI) currently trades at €143.05, while our model-based Fair Value estimate is €85.24, implying the stock looks roughly 67.8% overvalued today.

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Valuation

Bull case: the DCF Models group reads highest at a median of €57.64 per share, and 0 of the 10 models we run sit above the €143.05 price.

Bear case: the Asset-Based group reads lowest at €24.87, and 10 of the 10 models stay below the price. Evidence for this calculation is medium.

Scenario range: €65.42 (bear) to €109.80 (bull), the price of €143.05 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 48/100 (below-average quality), in the Technology sector.

Weak Growth: Growth has flattened: the last year, three and five years all grew more slowly than the long-term average.

Soitec SA reported revenue of €592M in FY2026 versus €863M in FY2022, a compound −9.0%/yr. Reported net income was −€220M in FY2026.

Key figures

Market cap €5.1B · P/S ratio 5.44 · EPS (TTM) €−6.23 · Net margin −37.2% · Return on equity −15.2% · Return on assets (EBIT) 6.2% · Operating margin −10.8% · Revenue (TTM) €592M.

Competitive moat

Our AI-assisted moat analysis scores the competitive advantage at 47 out of 100 (low confidence).

What moves the price

The share trades about 26% below its 52-week high and 523% above its 52-week low, currently above its 200-day average.

For context, the median of 10 Technology peers we cover trades at −22% fair-value upside, at −40%, SOI screens richer than that median.

Fair Value models

Bear €65.42 Fair Value €85.24 Bull €109.80
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. 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.
Highest evidence
FCF DCF €40.82 €58.52 €84.10 80
Growth DCF €41.39 €57.09 €78.46 79
5Y EBITDA Exit €40.72 €61.15 €84.63 75
All 10 models by family
DCF Models
FCF DCF €40.82 €58.52 €84.10 80
5Y Revenue Exit €31.35 €43.79 €59.24 73
5Y EBITDA Exit €40.72 €61.15 €84.63 75
10Y Revenue Exit €33.97 €45.92 €61.22 67
10Y EBITDA Exit €40.41 €57.64 €79.99 69
Multiples
EV/EBITDA €45.18 €58.37 €71.55 67
EV/Revenue €27.01 €36.17 €45.34 54
Asset-Based
NCAV (Graham) €18.56 €24.87 €37.13 54
Growth DCF
Growth DCF €41.39 €57.09 €78.46 79
Rev-Margin DCF €31.35 €44.14 €58.79 73

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Quality Score breakdown

Overall quality 48/100

Of which business quality 51 · Market factors (momentum, volatility) 63

Profitability 3
Margins and returns on capital today
Quality Growth 4
Are margins and returns improving?
Cashflow 59
Earnings quality: real cash, not paper profit
Fin. Strength 89
Balance sheet, leverage, solvency risk
Investment 67
Disciplined investing over empire-building
Low Volatility 0
Calm price path (market factor)
Momentum 93
Price trend over the last 3–12 months (market factor)
52W Momentum 86
Distance to the 52-week high (market factor)
Net Issuance 91
Share count: buybacks or dilution?

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. 23/100
Growth has flattened: the last year, three and five years all grew more slowly than the long-term average.
Revenue growth 1 year
−33.6%
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.
−18.4%
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.
+0.3%
Start year 2021 (pandemic). Over 10 years: +9.8% a year
Revenue growth 21 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.
+7.1%
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.
12.6% (2021) → −5.6% (2026)
What shareholders gained per year ⓘWe only publish this rate when it is defensible. Reason: fiscal 2026 is a loss year, no rate is defined from a loss
not computed

Growth Forecast

A lot of optimism in the price
The price assumes more growth than the company has delivered so far and more than analysts expect.
What the price assumes ⓘThis turns our valuation around: instead of asking what the share is worth, it asks what growth the current price requires. It uses the cash the company keeps after all spending (free cash flow), the same discount rate as our models, five years of growth, then slowing evenly to 2 % a year by year ten. Compared with the analysts' sales forecasts extended to the same five years (at least three analysts, for context only, it does not enter the Fair Value): within 3 percentage points counts as "in line" (amber), below that little optimism (green), above that a lot of optimism (red).
+38.4%
Yearly growth needed for the next five years to justify today's price.
What forecasts expect ⓘAnalysts publish sales forecasts for the next two fiscal years. For the years after that, growth slows evenly to 2 % a year by year ten (2 % is the long-run rate our models use). Projected years are marked as such.
+17.9%
Yearly sales growth analysts expect, extended to five years.
After inflation (euro area: IMF forecast 2.2% a year to 2030, 2.6% from 2016 to 2025) that is about +35.5% a year for the price and +15.4% for the forecasts.
Forecast 2027 (sales)+7.2%
Forecast 2028 (sales)+25.2%
Projected 2029 (sales)+22.3%
Projected 2030 (sales)+19.4%
Projected 2031 (sales)+16.5%

SOI screens 68% overvalued. Compare with ASML Holding →

Recent news

News mood ⓘNews mood, the average tone of recent news (85 articles), rated against how stocks are usually covered. 🚀 Hype = unusually upbeat · 🙂 Positive = above average · 😐 Neutral = typical · 🙁 Negative = below average · 😨 Very negative = unusually downbeat. It reflects the tone of coverage, not our valuation. Neutral
Recent news coverage is roughly neutral, about typical for how stocks are covered.

Compare Soitec SA with another stock

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.Semiconductor Equipment & Materials · 216 stocks

Beats the industry median on 1/12 measures
Overall it trails its industry peers.
Valuation
Quality Score 48 · Below median
Fair Value upside −40% · Above median
Profitability
Return on assets 0% · Bottom 25%
Net margin (TTM) −37% · Bottom 25%
Operating margin (TTM) −11% · Bottom 25%
Growth and dividend
Revenue growth −35% · Bottom 25%
Balance sheet
Debt / equity 0.27× · Above median

Valuation Multiplesvs Semiconductor Equipment & Materials median · lower = cheaper

P/B 4.38× · Pricier than median
P/S (TTM) 9.82× · Pricier than median
P/FCF 69.2× · Priciest 25%
EV/EBITDA 59.9× · Priciest 25%
PEG 16.93× · Priciest 25%

Strength profile in five axes (Snowflake)

VALUEFUTUREPASTHEALTHDIVIDEND
This stock
VALUEFUTUREPASTHEALTHDIVIDEND
Sector peers
VALUE (fair-value potential)0 · sector 0
FUTURE (revenue growth)0 · sector 78
PAST (return on equity)0 · sector 29
HEALTH (low debt)86 · sector 96
DIVIDEND (yield)0 · sector 15

VALUE 0: the price sits above our fair-value range.

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 Semiconductor Equipment & Materials stocks, each showing price versus our Fair Value estimate.

Stock Price Fair Value vs Fair Value
ASML Holding ASML €1,503 €1,350 −10%
Lam Research Corporation LRCX $307.16 $250.94 −18%
Applied Materials, Inc AMAT $474.25 $368.52 −22%
KLA Corporation KLAC $188.32 $149.08 −21%
Teradyne, Inc TER $398.38 $65.79 −83%
Advanced Micro-Fabrication Equipment Inc 688012 ¥339.30 ¥110.10 −68%
SJ Semiconductor Corporation 688820 ¥133.57 ¥13.84 −90%
Hon. Precision, Inc 7769 5,670 TWD 4,864 TWD −14%
Piotech Inc 688072 ¥700.90 ¥320.60 −54%
Qnity Electronics, Inc Q $124.69 $70.44 −44%

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Cite: Fair Value Calculator (2026). "Soitec SA Fair Value". https://www.fairvalue-calculator.com/stock/SOI

Frequently asked questions

Is Soitec SA (SOI) overvalued or undervalued?
As of Sep 26, 2026, our model estimates a fair value of €85.24 versus a price of €143.05, about −40% upside (overvalued).
What is the fair value of SOI?
Our model-based fair value for Soitec SA is €85.24 (as of Sep 26, 2026), built from audited fundamentals. The current price: €143.05.
What is the quality score of SOI?
Soitec SA has a Quality Score of 48/100. 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 Soitec SA (SOI)?
Our model-based price target is the fair value of €85.24 (as of Sep 26, 2026) from 10 valuation models. Cautious scenario €65.42, optimistic scenario €109.80. It is a calculation from audited fundamentals, not an analyst target.
What is the Soitec SA stock forecast for 2026?
Our models put fair value at €85.24, about −40% upside versus a price of €143.05 (overvalued). Cautious scenario €65.42, optimistic scenario €109.80. The calculation is refreshed regularly with new filings.
What is the revenue of Soitec SA (SOI)?
Soitec SA reported trailing-twelve-month revenue of about €592M (latest available figure, as of Sep 26, 2026).
What growth is priced into Soitec SA (SOI)?
For today's price to be fair in a discounted-cash-flow model, Soitec SA would have to grow free cash flow by +38.4 % per year for five years (discount rate 12.6 %, then slowing evenly to 2 % perpetual growth by year ten). Over the last 5 years revenue grew +0.3 % per year. As of Sep 26, 2026.
What discount rate (WACC) does the fair value of SOI use?
Our models discount Soitec SA at 12.6 %: a base by market capitalisation (mid), damped by beta 1.89, country premium for France. The same rate applies in all 26 models.
What is a reverse DCF?
A reverse DCF turns the usual calculation around. Instead of deriving a value from assumptions, it takes today's price as given and asks: what free-cash-flow growth would a company have to deliver for exactly this price to be fair? The result is not a forecast but the expectation already priced in. For Soitec SA that is +38.4 % per year a year over ten years, using the same discount rate (12.6 %) and the same formula as our fair value.
How much growth has Soitec SA (SOI) delivered so far?
Over the past 5 years revenue at Soitec SA grew +0.3 % a year. The price currently implies +38.4 % per year free-cash-flow growth a year. Comparing the two shows how much confidence is in the price: if it demands more than has been delivered, the business has to accelerate for the maths to work.
How fast is the sector of Soitec SA (SOI) growing?
The median revenue growth in the sector is +8.1 % a year. That is the yardstick for the growth priced into Soitec SA (+38.4 % per year a year): it shows whether the expectation is within the usual range or beyond it.
What is the free cash flow yield of Soitec SA (SOI)?
The free-cash-flow yield on the price is 1.65 %: that much free cash flow Soitec SA produces per unit of market value. When it exceeds the discount rate of our models (12.6 %), the business already earns more than its cost of capital demands, and the price needs little additional growth.
What is the intrinsic value of Soitec SA (SOI)?
Intrinsic value and fair value mean the same thing: what the business is worth on its numbers, independent of the share price. For Soitec SA it is €85.24 per share (as of Sep 26, 2026), against a price of €143.05. It is the blended result of 10 valuation models (cash flow, earnings, asset, dividend).
Is Soitec SA stock overvalued or undervalued in 2026?
As of Sep 26, 2026, SOI trades above its calculated fair value: price €143.05, fair value €85.24, a gap of about −40% (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 SOI?
No. The price is what the market pays today (€143.05); the fair value is what the company's own numbers justify (€85.24). For Soitec SA the two are €57.81 per share apart. That gap is exactly why we show both numbers side by side.
How much is Soitec SA worth?
The market values Soitec SA at about €5.1B (market capitalisation, as of Sep 26, 2026). Per share that is €143.05; our models calculate a fair value of €85.24 per share.
What do the bullish and bearish scenarios say about SOI?
Our models span a range for Soitec SA: cautious scenario €65.42, base €85.24, optimistic €109.80 per share (as of Sep 26, 2026, price €143.05). The range comes from different growth and margin assumptions, not from analyst opinions.
What is the PEG ratio of SOI?
The PEG ratio of Soitec SA is 16.93 (P/E divided by earnings growth, as of Sep 26, 2026). That is above 1, so the growth is already paid for in the price.
How solid is the balance sheet of Soitec SA (SOI)?
Balance-sheet figures for Soitec SA (as of Sep 26, 2026): return on equity −15.2%, debt of 0.27 per unit of equity. They feed the Quality Score of 48/100, which measures business quality independently of the share price.
How far is SOI from its 52-week high?
Soitec SA trades at €143.05, about 26% below its 52-week high of €192.20 and 523% above the low of €22.95 (as of Sep 25, 2026). Distance from the high says nothing about value: that is what the fair value of €85.24 is for.
Which stocks are comparable to Soitec SA?
From the same area (Technology) we also value ASML Holding, Lam Research Corporation, Applied Materials, Inc, KLA Corporation, 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 Soitec SA stock attractive at the current price?
The data as of Sep 26, 2026: price €143.05, calculated fair value €85.24 (−40%), Quality Score 48/100, from 10 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 SOI calculated?
We run Soitec SA through 10 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 €85.24, 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 13.2 % above its aggregate fair value. Soitec SA 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 Soitec SA (SOI)?
The closing price on Sep 25, 2026 was €143.05. Our model-based fair value is €85.24, about −40% upside (overvalued). We carry closing prices from our data provider, not a live tick.
What should I pay attention to with Soitec SA right now?
The price sits above even our optimistic bull case (€109.80). The favourable scenario is already priced in. Solid but not exceptional quality (48/100) and above fair value, neither a clear bargain nor a standout compounder.

Key figures of Soitec SA

How large is the market capitalisation of Soitec SA (SOI)?
The market capitalisation of Soitec SA is €5.1B. 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 Soitec SA (SOI)?
The price-to-sales ratio of Soitec SA is 5.44 (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 Soitec SA (SOI)?
Earnings per share at Soitec SA are €−6.23. Earnings per share over the last twelve months: total profit spread across every single share.
What is the net margin of Soitec SA (SOI)?
The net margin of Soitec SA is −37.2% (fiscal year 2026). 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 Soitec SA (SOI)?
The return on equity (ROE) of Soitec SA is −15.2% (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 Soitec SA (SOI)?
On an EBIT basis the return on assets of Soitec SA is 6.2% (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 Soitec SA (SOI)?
The operating margin of Soitec SA is −10.8% (last twelve months). Profit from the core business (before interest and taxes) relative to revenue.
How fast is revenue growing at Soitec SA (SOI)?
Revenue at Soitec SA is growing −34.6% versus a year earlier (3y avg −18.4%). 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 Soitec SA (SOI)?
Earnings per share at Soitec SA are growing −19.6% versus a year earlier. How much earnings per share grew versus a year earlier.
How much net debt does Soitec SA (SOI) carry?
The net debt of Soitec SA is €58.0M (fiscal year 2026, ≈ 0.7 yrs of FCF). 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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