Tainergy Tech Co Ltd (4934) fair value: what the stock is really worth
As of Nov 9, 2026: fair value (intrinsic value) of Tainergy Tech Co Ltd stock TWD 20.37, price TWD 13.00, upside +56.7%, quality 42 out of 100. Rating: strongly undervalued. Calculated from audited financials with one of our 26 valuation models and 37 quality factors, updated daily.
69 individual criteria per stock, every one traceableSee the method →
Price vs Fair Value
White line = price, green steps = our fair value per fiscal year. As of Nov 5, 2026.
How to read this chart
60‑month range 8.39 TWD – 40.00 TWD · fair‑value band 13.47 TWD – 25.30 TWD · the 13.00 TWD price screens below the 20.37 TWD fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). As of Nov 5, 2026.
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Tainergy Tech Co., Ltd., together with its subsidiaries, engages in the research, design, manufacture, and sale of solar cells, modules, and related systems in Taiwan, China, Hong Kong, Vietnam, India, the United States, Canada, and internationally.
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It offers solar cells, silicon carbide, contact lenses, and EV chargers. The company also sells solar power systems. In addition, it is involved in the manufacture and sale of electronic parts and components, as well as real estate activities.
The company was founded in 2007 and is based in Taoyuan City, Taiwan.
Stock analysis
Tainergy Tech Co Ltd (4934) currently trades at 13.00 TWD, while our model-based Fair Value estimate is 20.37 TWD, implying the stock looks roughly 36% undervalued today.
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Valuation
How firm this estimate is: it rests on 1 models at a data quality of 87/100, which puts the data coverage at low.
Scenario range: 13.47 TWD (bear) to 25.30 TWD (bull), the price of 13.00 TWD sits below 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 42/100 (below-average quality), in the Technology sector.
Weak Growth: Revenue is shrinking: the last year, the last three and the last five years are all negative.
Tainergy Tech Co Ltd reported revenue of 89.3M TWD in FY2025 versus 1.6B TWD in FY2021, a compound −51.3%/yr. Reported net income was −215M TWD in FY2025.
Key figures
Market cap 2.9B TWD (≈ $89.1M) Micro · P/S ratio 25.4 · EPS (TTM) −0.8200 TWD · Net margin −128% · Return on equity −18.0% · Return on assets (EBIT) −15.0% (5-year average) · Operating margin −197% · Revenue (TTM) 145M TWD.
Competitive moat
Our AI-assisted moat analysis scores the competitive advantage at 12 out of 100 (medium confidence).
What moves the price
The share trades about 37% below its 52-week high and 11% above its 52-week low, currently below its 200-day average.
For context, the median of 10 Technology peers we cover trades at 10% fair-value upside, at 57%, 4934 screens cheaper than that median.
Fair Value models
Bear13.47 TWDFair Value 20.37 TWDBull25.30 TWD
Price 13.00 TWD · Upside +56.7%
Model ⓘEach model values the company its own way (discounted cash flow, earnings, assets, dividends). The fair value above starts from their evidence-weighted blend, not from a single model. In cyclical trough or peak years, after dilution or a stock split it is adjusted afterwards, so it can sit above or below the models.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.Coverage ⓘCoverage = 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
−75.7%
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.
−65.7%
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.
−47.3%
Start year 2020 (pandemic). Over 10 years: −36.1% a year
Revenue growth 16 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.
−16.1%
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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.
2.6% (2020) → −492.5% (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.Solar · 97 stocks
Beats the industry median on 4/9 measures
A mixed picture versus its industry peers.
Valuation
Quality Score42 · Above median
Fair Value upside+56.7% · Top 25%
Profitability
Return on assets−8.9% · Bottom 25%
Net margin (12 months)−127.7% · Bottom 25%
Operating margin (12 months)−197.3% · Bottom 25%
Growth and dividend
Revenue growth (quarter YoY)177.2% · Top 25%
Balance sheet
Debt / equity0.04× · Lowest 25%
Valuation Multiplesvs Solar median · lower = cheaper
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Cite: Fair Value Calculator (2026). "Tainergy Tech Co Ltd Fair Value". https://www.fairvalue-calculator.com/stock/4934
Frequently asked questions
Is Tainergy Tech Co Ltd (4934) overvalued or undervalued?
As of Nov 5, 2026, our model estimates a fair value of 20.37 TWD versus a price of 13.00 TWD, about +57% upside (undervalued).
What is the fair value of 4934?
Our model-based fair value for Tainergy Tech Co Ltd is 20.37 TWD (as of Nov 5, 2026), built from audited fundamentals. The current price: 13.00 TWD.
What is the quality score of 4934?
Tainergy Tech Co Ltd has a Quality Score of 42/100. 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 Tainergy Tech Co Ltd (4934)?
Our model-based price target is the fair value of 20.37 TWD (as of Nov 5, 2026) from 1 valuation models. Cautious scenario 13.47 TWD, optimistic scenario 25.30 TWD. It is a calculation from audited fundamentals, not an analyst target.
What is the Tainergy Tech Co Ltd stock forecast for 2026?
Our models put fair value at 20.37 TWD, about +57% upside versus a price of 13.00 TWD (undervalued). Cautious scenario 13.47 TWD, optimistic scenario 25.30 TWD. The calculation is refreshed regularly with new filings.
What is the revenue of Tainergy Tech Co Ltd (4934)?
Tainergy Tech Co Ltd reported trailing-twelve-month revenue of about 145M TWD (latest available figure, as of Nov 5, 2026).
What is the intrinsic value of Tainergy Tech Co Ltd (4934)?
Intrinsic value and fair value mean the same thing: what the business is worth on its numbers, independent of the share price. For Tainergy Tech Co Ltd it is 20.37 TWD per share (as of Nov 5, 2026), against a price of 13.00 TWD. It is the blended result of 1 valuation models in 1 family (Asset-Based).
Is Tainergy Tech Co Ltd stock overvalued or undervalued in 2026?
As of Nov 5, 2026, 4934 trades below its calculated fair value: price 13.00 TWD, fair value 20.37 TWD, a gap of about +57% (undervalued). 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 4934?
No. The price is what the market pays today (13.00 TWD); the fair value is what the company's own numbers justify (20.37 TWD). For Tainergy Tech Co Ltd the two are 7.37 TWD per share apart. That gap is exactly why we show both numbers side by side.
How much is Tainergy Tech Co Ltd worth?
The market values Tainergy Tech Co Ltd at about 2.9B TWD (market capitalisation, as of Nov 5, 2026). Per share that is 13.00 TWD; our models calculate a fair value of 20.37 TWD per share.
What do the bullish and bearish scenarios say about 4934?
Our models span a range for Tainergy Tech Co Ltd: cautious scenario 13.47 TWD, base 20.37 TWD, optimistic 25.30 TWD per share (as of Nov 5, 2026, price 13.00 TWD). The range comes from different growth and margin assumptions, not from analyst opinions.
How solid is the balance sheet of Tainergy Tech Co Ltd (4934)?
Balance-sheet figures for Tainergy Tech Co Ltd (as of Nov 5, 2026): return on equity −18.0%, debt of 0.04 per unit of equity. They feed the Quality Score of 42/100, which measures business quality independently of the share price.
How far is 4934 from its 52-week high?
Tainergy Tech Co Ltd trades at 13.00 TWD, about 37% below its 52-week high of 20.75 TWD and 11% above the low of 11.70 TWD (as of Nov 9, 2026). Distance from the high says nothing about value: that is what the fair value of 20.37 TWD is for.
Which stocks are comparable to Tainergy Tech Co Ltd?
From the same area (Technology) we also value First Solar, Inc, Nextpower Inc, Tongwei Co, Waaree Energies Limited, 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 Tainergy Tech Co Ltd stock attractive at the current price?
The data as of Nov 5, 2026: price 13.00 TWD, calculated fair value 20.37 TWD (+57%), Quality Score 42/100, 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 4934 calculated?
We run Tainergy Tech Co Ltd through 1 models from 1 family: Asset-Based. Every model gets the same audited fundamentals; the fair value of 20.37 TWD builds on their evidence-weighted average, 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 13.3% above its aggregate fair value. Tainergy Tech Co Ltd currently trades 36% below its own fair value, and the market average says nothing about that. 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 Tainergy Tech Co Ltd (4934)?
The closing price on Nov 9, 2026 was 13.00 TWD. Our model-based fair value is 20.37 TWD, about +57% upside (undervalued). We carry closing prices from our data provider, not a live tick.
What should I pay attention to with Tainergy Tech Co Ltd right now?
The large discount to fair value meets weak quality (42/100). That raises the risk this is a value trap rather than a bargain. The price is below even our cautious bear case (13.47 TWD). The market is more pessimistic than our downside scenario. The large gap to fair value rests on thin data (low evidence): fewer applicable models and a shorter history. Read it with extra caution. A fairly wide model range (13.47 TWD to 25.30 TWD) leaves room in how you read the outcome.
Key figures of Tainergy Tech Co Ltd
How large is the market capitalisation of Tainergy Tech Co Ltd (4934)?
The market capitalisation of Tainergy Tech Co Ltd is 2.9B TWD (≈ $89.1M). 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 Tainergy Tech Co Ltd (4934)?
The price-to-sales ratio of Tainergy Tech Co Ltd is 25.4 (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 Tainergy Tech Co Ltd (4934)?
Earnings per share at Tainergy Tech Co Ltd are −0.8200 TWD. Earnings per share over the last twelve months: total profit spread across every single share.
What is the net margin of Tainergy Tech Co Ltd (4934)?
The net margin of Tainergy Tech Co Ltd is −128% (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 Tainergy Tech Co Ltd (4934)?
The return on equity (ROE) of Tainergy Tech Co Ltd is −18.0% (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 Tainergy Tech Co Ltd (4934)?
On an EBIT basis the return on assets of Tainergy Tech Co Ltd is −15.0% (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 Tainergy Tech Co Ltd (4934)?
The operating margin of Tainergy Tech Co Ltd is −197% (last twelve months). Profit from the core business (before interest and taxes) relative to revenue.
How fast is revenue growing at Tainergy Tech Co Ltd (4934)?
Revenue at Tainergy Tech Co Ltd is growing +177% versus a year earlier (3y avg −65.7%). 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 Tainergy Tech Co Ltd (4934)?
Earnings per share at Tainergy Tech Co Ltd are growing +309% versus a year earlier. How much earnings per share grew versus a year earlier.
How much free cash flow does Tainergy Tech Co Ltd (4934) generate?
The free cash flow of Tainergy Tech Co Ltd is −512M TWD (fiscal year 2025). The cash truly left after running and investing in the business, this is what pays dividends and buybacks.
How much net cash does Tainergy Tech Co Ltd (4934) hold?
Tainergy Tech Co Ltd holds more cash than debt, 124M TWD net (fiscal year 2025). The company holds more cash than debt, a safety cushion.
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Thin data
Nov 5, 2026