Tesna Inc (131970) fair value: what the stock is really worth
As of Oct 28, 2026: fair value (intrinsic value) of Tesna Inc stock KRW 143,480, price KRW 105,500, upside +36.0%, quality 47 out of 100. Rating: undervalued. 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. As of Oct 29, 2026.
How to read this chart
60‑month range 20,126 KRW – 190,100 KRW · fair‑value band 107,610 KRW – 179,350 KRW · the 105,500 KRW price screens below the 143,480 KRW fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). As of Oct 29, 2026.
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DOOSAN TESNA Inc. provides semiconductor testing services in South Korea. The company offers test program development, wafer probe test, package final test, backend, and turn-key services.
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It provides test services for various semiconductors used in mobile devices, automobiles, appliances, industrial goods, and security. The company was formerly known as Tesna Inc. and changed its name to DOOSAN TESNA Inc. in April 2022.
DOOSAN TESNA Inc. was founded in 2002 and is headquartered in Pyeongtaek-si, South Korea.
Stock analysis
Tesna Inc (131970) currently trades at 105,500 KRW, while our model-based Fair Value estimate is 143,480 KRW, implying the stock looks roughly 26.5% undervalued today.
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Valuation
Bull case: the Growth DCF group reads highest at a median of 122,839 KRW per share, and 9 of the 23 models we run sit above the 105,500 KRW price.
Bear case: the Asset-Based group reads lowest at 14,937 KRW, and 14 of the 23 models stay below the price. Data coverage for this calculation is medium.
Scenario range: 107,610 KRW (bear) to 179,350 KRW (bull), the price of 105,500 KRW 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 47/100 (below-average quality), in the Technology sector.
Mixed Growth: Revenue is growing, but margins or cash flow do not fully confirm the trend.
Tesna Inc reported revenue of 304B KRW in FY2025 versus 208B KRW in FY2021, a compound +10.0%/yr. Reported net income was 1.5B KRW in FY2025, compounding −57.7%/yr from FY2021.
Key figures
Market cap 2.0T KRW (≈ $1.5B) Small · P/S ratio 7.55 · Dividend yield 0.2% · Net margin 19.3% · Return on equity 328% · Return on assets (EBIT) 6.3% · Operating margin 24.9% · Revenue (TTM) 248B KRW.
Competitive moat
Our AI-assisted moat analysis scores the competitive advantage at 65 out of 100 (low confidence).
What moves the price
The share trades about 45% below its 52-week high and 158% above its 52-week low, currently above its 200-day average.
For context, the median of 10 Technology peers we cover trades at 4% fair-value upside, at 36%, 131970 screens cheaper than that median.
Fair Value models
Bear107,610 KRWFair Value 143,480 KRWBull179,350 KRW
Price 105,500 KRW · Upside +36.0%
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.94/100
Revenue is growing, but margins or cash flow do not fully confirm the trend.
Revenue growth 1 year
−18.6%
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.
+3.1%
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.
+18.1%
Start year 2020 (pandemic). Over 10 years: +24.6% a year
Revenue growth 11 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.
+18.3%
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What shareholders gained per year (last 5 years), in KRW ⓘWhat the business itself delivers per year: earnings growth per share plus the dividend yield. This is what you get IF the market keeps valuing the stock the same way: it contains no assumption about the market changing its mind. Computed per share, so buybacks count and a merger does not pass as growth. For a company that pays no dividend it is pure earnings growth per share. Period: earnings growth per share as CAGR over the last 5 reported fiscal years (annual statements), plus the current dividend yield. The start value is the median of the three years around the start, so a single crisis year (a pandemic or a write-down) does not distort the rate. Measured in KRW: this currency has depreciated against the euro and dollar over the long run, so part of the nominal rate is currency erosion that never reaches a EUR/USD investor.
−49.9%
Earnings growth per share plus dividend.
Earnings per share, growth per year−50.1%
Dividend (yield on the price)0.2%
Pace: 5 vs 10 years ⓘTwo data points, not a trend model: earnings growth per share over the last 5 fiscal years against the last 10. Labelled "steady" when both rates are within 3 percentage points of each other, otherwise picking up or flattening. Shown only when ten years of history exist.−50.1% vs 3.5%, slowing
Profit margin 2020 to 2025 ⓘ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.23% → 0%
Pace: the 5-year rate starts in 2020 (pandemic)
Growth Forecast
Little optimism in the price
The price assumes less growth than the company has delivered so far and less 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).
+12.5%
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.
+27.1%
Yearly sales growth analysts expect, extended to five years.
After inflation (South Korea: IMF forecast 2.1% a year to 2030, 2.1% from 2016 to 2025) that is about +10.2% a year for the price and +24.6% for the forecasts.
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.Semiconductors & Semiconductor Equipment · 46 stocks
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Cite: Fair Value Calculator (2026). "Tesna Inc Fair Value". https://www.fairvalue-calculator.com/stock/131970
Frequently asked questions
Is Tesna Inc (131970) overvalued or undervalued?
As of Oct 29, 2026, our model estimates a fair value of 143,480 KRW versus a price of 105,500 KRW, about +36% upside (undervalued).
What is the fair value of 131970?
Our model-based fair value for Tesna Inc is 143,480 KRW (as of Oct 29, 2026), built from audited fundamentals. The current price: 105,500 KRW.
What is the quality score of 131970?
Tesna Inc has a Quality Score of 47/100. 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 Tesna Inc (131970)?
Our model-based price target is the fair value of 143,480 KRW (as of Oct 29, 2026) from 23 valuation models. Cautious scenario 107,610 KRW, optimistic scenario 179,350 KRW. It is a calculation from audited fundamentals, not an analyst target.
What is the Tesna Inc stock forecast for 2026?
Our models put fair value at 143,480 KRW, about +36% upside versus a price of 105,500 KRW (undervalued). Cautious scenario 107,610 KRW, optimistic scenario 179,350 KRW. The calculation is refreshed regularly with new filings.
What is the revenue of Tesna Inc (131970)?
Tesna Inc reported trailing-twelve-month revenue of about 248B KRW (latest available figure, as of Oct 29, 2026).
Does Tesna Inc pay a dividend?
Tesna Inc currently shows a dividend yield of 0.16% relative to its recent price (as of Oct 29, 2026).
What growth is priced into Tesna Inc (131970)?
For today's price to be fair in a discounted-cash-flow model, Tesna Inc would have to grow free cash flow by +12.5 % per year for five years (discount rate 12.0 %, then slowing evenly to 2 % perpetual growth by year ten). Over the last 5 years revenue grew +18.1 % per year. As of Oct 29, 2026.
What discount rate (WACC) does the fair value of 131970 use?
Our models discount Tesna Inc at 12.0 %: a base by market capitalisation (small), damped by beta 1.12, country premium for South Korea. 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 Tesna Inc that is +12.5 % per year a year over ten years, using the same discount rate (12.0 %) and the same formula as our fair value.
How much growth has Tesna Inc (131970) delivered so far?
Over the past 5 years revenue at Tesna Inc grew +18.1 % a year. The price currently implies +12.5 % 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 Tesna Inc (131970) growing?
The median revenue growth in the sector is +10.8 % a year. That is the yardstick for the growth priced into Tesna Inc (+12.5 % 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 Tesna Inc (131970)?
The free-cash-flow yield on the price is 6.03 %: that much free cash flow Tesna Inc produces per unit of market value. When it exceeds the discount rate of our models (12.0 %), the business already earns more than its cost of capital demands, and the price needs little additional growth.
What is the intrinsic value of Tesna Inc (131970)?
Intrinsic value and fair value mean the same thing: what the business is worth on its numbers, independent of the share price. For Tesna Inc it is 143,480 KRW per share (as of Oct 29, 2026), against a price of 105,500 KRW. It is the blended result of 23 valuation models (cash flow, earnings, asset, dividend).
Is Tesna Inc stock overvalued or undervalued in 2026?
As of Oct 29, 2026, 131970 trades below its calculated fair value: price 105,500 KRW, fair value 143,480 KRW, a gap of about +36% (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 131970?
No. The price is what the market pays today (105,500 KRW); the fair value is what the company's own numbers justify (143,480 KRW). For Tesna Inc the two are 37,980 KRW per share apart. That gap is exactly why we show both numbers side by side.
How much is Tesna Inc worth?
The market values Tesna Inc at about 2.0T KRW (market capitalisation, as of Oct 29, 2026). Per share that is 105,500 KRW; our models calculate a fair value of 143,480 KRW per share.
What do the bullish and bearish scenarios say about 131970?
Our models span a range for Tesna Inc: cautious scenario 107,610 KRW, base 143,480 KRW, optimistic 179,350 KRW per share (as of Oct 29, 2026, price 105,500 KRW). The range comes from different growth and margin assumptions, not from analyst opinions.
How solid is the balance sheet of Tesna Inc (131970)?
Balance-sheet figures for Tesna Inc (as of Oct 29, 2026): return on equity 328.0%, debt of 0.32 per unit of equity. They feed the Quality Score of 47/100, which measures business quality independently of the share price.
How far is 131970 from its 52-week high?
Tesna Inc trades at 105,500 KRW, about 45% below its 52-week high of 190,100 KRW and 158% above the low of 40,886 KRW (as of Oct 28, 2026). Distance from the high says nothing about value: that is what the fair value of 143,480 KRW is for.
Which stocks are comparable to Tesna Inc?
From the same area (Technology) we also value PSK HOLDINGS Inc, ISC Co, TSE Co, Eugene Technology Co, 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 Tesna Inc stock attractive at the current price?
The data as of Oct 29, 2026: price 105,500 KRW, calculated fair value 143,480 KRW (+36%), Quality Score 47/100, from 23 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 131970 calculated?
We run Tesna Inc through 23 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 143,480 KRW, 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 13.4 % above its aggregate fair value. Tesna Inc currently trades 26 % 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 Tesna Inc (131970)?
The closing price on Oct 28, 2026 was 105,500 KRW. Our model-based fair value is 143,480 KRW, about +36% upside (undervalued). We carry closing prices from our data provider, not a live tick.
What should I pay attention to with Tesna Inc right now?
Solid quality (47/100) at a price below fair value, the discount is the argument here, not the business quality. The price sits below our cautious bear case: the market assumes less than even our pessimistic scenario. Read the verdict with care: some models are missing inputs, so the estimate scatters more than usual.
Key figures of Tesna Inc
How large is the market capitalisation of Tesna Inc (131970)?
The market capitalisation of Tesna Inc is 2.0T KRW (≈ $1.5B). 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 Tesna Inc (131970)?
The price-to-sales ratio of Tesna Inc is 7.55 (last twelve months). Price to sales: market value relative to yearly revenue. Useful when profit is thin or distorted.
What is the dividend yield of Tesna Inc (131970)?
The dividend yield of Tesna Inc is 0.2%. Yearly dividend relative to the share price. 3% pays 3 per 100 invested. Below: how much of profit is used for it.
What is the net margin of Tesna Inc (131970)?
The net margin of Tesna Inc is 19.3% (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 Tesna Inc (131970)?
The return on equity (ROE) of Tesna Inc is 328% (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 Tesna Inc (131970)?
On an EBIT basis the return on assets of Tesna Inc is 6.3% (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 Tesna Inc (131970)?
The operating margin of Tesna Inc is 24.9% (last twelve months). Profit from the core business (before interest and taxes) relative to revenue.
How fast is revenue growing at Tesna Inc (131970)?
Revenue at Tesna Inc is growing +20.2% versus a year earlier (3y avg +3.1%). 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 Tesna Inc (131970)?
Earnings per share at Tesna Inc are growing −24.8% versus a year earlier. How much earnings per share grew versus a year earlier.
How much net debt does Tesna Inc (131970) carry?
The net debt of Tesna Inc is 90.9B KRW (fiscal year 2025, ≈ 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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Oct 29, 2026