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YAS Co., Ltd. (255440) fair value: what the stock is really worth

As of Oct 2, 2026: fair value of YAS Co., Ltd. KRW 2,421, price KRW 8,570, upside -71.8%, quality 59 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? Yes
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Technology · KR

YC Thin data Oct 3, 2026

YAS Co., Ltd.

255440 · KQ

Stretched ValuationStrong overvaluation with only moderate quality.

Low debt
Quality 59/100
Thin margins · 8.2% net margin (TTM)
Mixed vs. peers (4/8)
Insider activity 40/100
Fair value 2,421 KRW · Strongly overvalued (−71.8%)
Weak Growth (revenue 3y −14.1 %/yr in KRW)
Negative free cash flow
Narrow moat 37/100
Thin data
⟳ Cyclical
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What runs behind every stock

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

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

Price vs Fair Value

19,959 KRW 3,820 KRW Fair Value 2,421 KRW May 2021 Oct 2026

White line = price, green steps = our fair value per fiscal year, dashed = 300-day average. As of Oct 3, 2026.

How to read this chart

60‑month range 3,820 KRW – 19,959 KRW · fair‑value band 1,598 KRW – 3,026 KRW · the 8,570 KRW price screens above the 2,421 KRW fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). Dashed = 300-day average. As of Oct 3, 2026.

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Company profile

YAS Co., Ltd. engages in the manufacture and sale of OLED process equipment for use in OLED TVs, OLED lighting products, solar cells, and others in South Korea.

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YAS Co., Ltd. engages in the manufacture and sale of OLED process equipment for use in OLED TVs, OLED lighting products, solar cells, and others in South Korea. The company offers OLED mass production systems; CIGS solar cells; and various equipment for research and development comprising MBE, steel thin film deposition, PLD, RF-magnetron sputter, OLED/CIGS, and UHV CVD systems, as well as OLED test systems. It also provides circular, linear, and point nozzle source parts; equipment to control and monitor evaporation source's temperature and deposition speed; glass chucks to maintain substrate in large-scaled substrates; and mask chucks to minimize distance between substrate and magnetic chuck, as well as system renovation services to enhance equipment performance by reconstructing chamber. The company was founded in 2002 and is headquartered in Paju-Si, South Korea.

Stock analysis

YAS Co., Ltd. (255440) currently trades at 8,570 KRW, while our model-based Fair Value estimate is 2,421 KRW, 71.8% below the price, so the stock looks 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: 1,598 KRW (bear) to 3,026 KRW (bull), the price of 8,570 KRW 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 59/100 (solid quality), in the Technology sector.

Weak Growth: Revenue growth is inconsistent: the periods point in different directions, so there is no trend to rely on.

YAS Co., Ltd. reported revenue of 34.8B KRW in FY2025 versus 49.7B KRW in FY2021, a compound −8.5%/yr. Reported net income was −5.5B KRW in FY2025.

Key figures

Market cap 102B KRW (≈ $76.0M) · P/S ratio 1.33 · Net margin −15.8% · Return on equity 3.8% · Return on assets (EBIT) −2.6% · Operating margin 15.9% · Revenue (TTM) 63.4B KRW · Revenue growth (YoY) +710%.

Competitive moat

Our AI-assisted moat analysis scores the competitive advantage at 35 out of 100 (medium confidence).

What moves the price

The share trades about 30% below its 52-week high and 124% above its 52-week low, currently below its 200-day average.

For context, the median of 10 Technology peers we cover trades at −28% fair-value upside, at −72%, 255440 screens richer than that median.

Fair Value models

Bear 1,598 KRW Fair Value 2,421 KRW Bull 3,026 KRW
Price 8,570 KRW · Upside -71.8%
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.
Highest evidence
NCAV (Graham) 5,591 KRW 7,492 KRW 11,182 KRW 54
All 1 models by family
Asset-Based
NCAV (Graham) 5,591 KRW 7,492 KRW 11,182 KRW 54

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Quality Score breakdown

Overall quality 59/100

Of which business quality 59 · Market factors (momentum, volatility) 37

Profitability 4
Margins and returns on capital today
Quality Growth 83
Are margins and returns improving?
Cashflow 33
Earnings quality: real cash, not paper profit
Fin. Strength 77
Balance sheet, leverage, solvency risk
Investment 100
Disciplined investing over empire-building
Low Volatility 36
Calm price path (market factor)
Momentum 33
Price trend over the last 3–12 months (market factor)
52W Momentum 46
Distance to the 52-week high (market factor)
Net Issuance 96
Share count: buybacks or dilution?

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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. 20/100
Revenue growth is inconsistent: the periods point in different directions, so there is no trend to rely on.
Revenue growth 1 year
+21.4%
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.
−14.1%
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.
3.0% (2021) → −18.6% (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

255440 screens overvalued: fair value 72% below the price. Compare with ASML Holding →

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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 · 219 stocks

Beats the industry median on 4/8 measures
A mixed picture versus its industry peers.
Valuation
Quality Score 59 · Above median
Fair Value upside −71.8% · Bottom 25%
Profitability
Return on equity (TTM) 3.8% · Below median
Return on assets 1.1% · Below median
Net margin (TTM) 8.2% · Below median
Operating margin (TTM) 15.9% · Above median
Growth and dividend
Revenue growth 710.0% · Top 25%
Balance sheet
Debt / equity 0.07× · Below median

Strength profile in five axes (Snowflake)

VALUEFUTUREPASTHEALTHDIVIDEND
This stock
VALUEFUTUREPASTHEALTHDIVIDEND
Sector peers
VALUE (fair-value potential)0 · sector 0
FUTURE (revenue growth)100 · sector 100
PAST (return on equity)15 · sector 38
HEALTH (low debt)97 · sector 96
DIVIDEND (yield)0 · sector 16

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 €1,597 €1,350 −15%
Lam Research Corporation LRCX $347.49 $250.94 −28%
Applied Materials, Inc AMAT $511.38 $368.52 −28%
KLA Corporation KLAC $206.89 $160.12 −23%
Teradyne, Inc TER $415.79 $65.79 −84%
Advanced Micro-Fabrication Equipment Inc 688012 ¥339.30 ¥110.10 −68%
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%
Entegris, Inc ENTG $151.89 $92.64 −39%

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YAS Co., Ltd. · Fair Value
2,421 KRW −72%Fair Value
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Cite: Fair Value Calculator (2026). "YAS Co., Ltd. Fair Value". https://www.fairvalue-calculator.com/stock/255440

Frequently asked questions

Is YAS Co., Ltd. (255440) overvalued or undervalued?
As of Oct 3, 2026, our model estimates a fair value of 2,421 KRW versus a price of 8,570 KRW, about −72% upside (overvalued).
What is the fair value of 255440?
Our model-based fair value for YAS Co., Ltd. is 2,421 KRW (as of Oct 3, 2026), built from audited fundamentals. The current price: 8,570 KRW.
What is the quality score of 255440?
YAS Co., Ltd. has a Quality Score of 59/100. 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 YAS Co., Ltd. (255440)?
Our model-based price target is the fair value of 2,421 KRW (as of Oct 3, 2026) from 1 valuation models. Cautious scenario 1,598 KRW, optimistic scenario 3,026 KRW. It is a calculation from audited fundamentals, not an analyst target.
What is the YAS Co., Ltd. stock forecast for 2026?
Our models put fair value at 2,421 KRW, about −72% upside versus a price of 8,570 KRW (overvalued). Cautious scenario 1,598 KRW, optimistic scenario 3,026 KRW. The calculation is refreshed regularly with new filings.
What is the revenue of YAS Co., Ltd. (255440)?
YAS Co., Ltd. reported trailing-twelve-month revenue of about 63.4B KRW (latest available figure, as of Oct 3, 2026).
What is the intrinsic value of YAS Co., Ltd. (255440)?
Intrinsic value and fair value mean the same thing: what the business is worth on its numbers, independent of the share price. For YAS Co., Ltd. it is 2,421 KRW per share (as of Oct 3, 2026), against a price of 8,570 KRW. It is the blended result of 1 valuation models (cash flow, earnings, asset, dividend).
Is YAS Co., Ltd. stock overvalued or undervalued in 2026?
As of Oct 3, 2026, 255440 trades above its calculated fair value: price 8,570 KRW, fair value 2,421 KRW, a gap of about −72% (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 255440?
No. The price is what the market pays today (8,570 KRW); the fair value is what the company's own numbers justify (2,421 KRW). For YAS Co., Ltd. the two are 6,149 KRW per share apart. That gap is exactly why we show both numbers side by side.
How much is YAS Co., Ltd. worth?
The market values YAS Co., Ltd. at about 102B KRW (market capitalisation, as of Oct 3, 2026). Per share that is 8,570 KRW; our models calculate a fair value of 2,421 KRW per share.
What do the bullish and bearish scenarios say about 255440?
Our models span a range for YAS Co., Ltd.: cautious scenario 1,598 KRW, base 2,421 KRW, optimistic 3,026 KRW per share (as of Oct 3, 2026, price 8,570 KRW). The range comes from different growth and margin assumptions, not from analyst opinions.
How solid is the balance sheet of YAS Co., Ltd. (255440)?
Balance-sheet figures for YAS Co., Ltd. (as of Oct 3, 2026): return on equity 3.8%, debt of 0.07 per unit of equity. They feed the Quality Score of 59/100, which measures business quality independently of the share price.
How far is 255440 from its 52-week high?
YAS Co., Ltd. trades at 8,570 KRW, about 30% below its 52-week high of 12,270 KRW and 124% above the low of 3,820 KRW (as of Oct 2, 2026). Distance from the high says nothing about value: that is what the fair value of 2,421 KRW is for.
Which stocks are comparable to YAS Co., Ltd.?
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 YAS Co., Ltd. stock attractive at the current price?
The data as of Oct 3, 2026: price 8,570 KRW, calculated fair value 2,421 KRW (−72%), Quality Score 59/100, 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 255440 calculated?
We run YAS Co., Ltd. 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 2,421 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 15.0 % above its aggregate fair value. YAS Co., Ltd. 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 YAS Co., Ltd. (255440)?
The closing price on Oct 2, 2026 was 8,570 KRW. Our model-based fair value is 2,421 KRW, about −72% upside (overvalued). We carry closing prices from our data provider, not a live tick.
What should I pay attention to with YAS Co., Ltd. right now?
The price sits above even our optimistic bull case (3,026 KRW). The favourable scenario is already priced in. The large gap to fair value rests on thin data (low evidence): fewer applicable models and a shorter history. Read it with extra caution. Solid but not exceptional quality (59/100) and above fair value, neither a clear bargain nor a standout compounder. A fairly wide model range (1,598 KRW to 3,026 KRW) leaves room in how you read the outcome.

Key figures of YAS Co., Ltd.

How large is the market capitalisation of YAS Co., Ltd. (255440)?
The market capitalisation of YAS Co., Ltd. is 102B KRW (≈ $76.0M). 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 YAS Co., Ltd. (255440)?
The price-to-sales ratio of YAS Co., Ltd. is 1.33 (last twelve months). Price to sales: market value relative to yearly revenue. Useful when profit is thin or distorted.
What is the net margin of YAS Co., Ltd. (255440)?
The net margin of YAS Co., Ltd. is −15.8% (fiscal year 2025). 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 YAS Co., Ltd. (255440)?
The return on equity (ROE) of YAS Co., Ltd. is 3.8% (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 YAS Co., Ltd. (255440)?
On an EBIT basis the return on assets of YAS Co., Ltd. is −2.6% (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 YAS Co., Ltd. (255440)?
The operating margin of YAS Co., Ltd. is 15.9% (last twelve months). Profit from the core business (before interest and taxes) relative to revenue.
How fast is revenue growing at YAS Co., Ltd. (255440)?
Revenue at YAS Co., Ltd. is growing +710% versus a year earlier (3y avg −14.1%). 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 YAS Co., Ltd. (255440)?
Earnings per share at YAS Co., Ltd. are growing −43.2% versus a year earlier. How much earnings per share grew versus a year earlier.
How much free cash flow does YAS Co., Ltd. (255440) generate?
The free cash flow of YAS Co., Ltd. is −12.8B KRW (fiscal year 2025). The cash truly left after running and investing in the business, this is what pays dividends and buybacks.
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