STI Co. Ltd (039440) fair value: what the stock is really worth
As of Sep 23, 2026: fair value of STI Co. Ltd KRW 19,517, price KRW 21,400, upside -8.8%, quality 55 out of 100. 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, dashed = 300-day average. As of Sep 24, 2026.
How to read this chart
60‑month range 10,428 KRW – 41,222 KRW · fair‑value band 13,017 KRW – 27,587 KRW · the 21,400 KRW price screens above the 19,517 KRW fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). Dashed = 300-day average. As of Sep 24, 2026.
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STI Co., Ltd. operates in the semiconductor equipment industry in Korea. Its products include central chemical supply systems, slurry mixing and systems, and chemical mixing / dilution system for mixing or dilution, and supply of TMAH, KOH, HF, NH4OH, and SC-1.
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STI Co., Ltd. operates in the semiconductor equipment industry in Korea. Its products include central chemical supply systems, slurry mixing and systems, and chemical mixing / dilution system for mixing or dilution, and supply of TMAH, KOH, HF, NH4OH, and SC-1. The company offers wet station products, including initial, pre-depo, pre photo, and ITO; cassette cleaners, developers, glass slimming systems, strippers, etchers, after glass grinding cleaners, and photo mask developers; and fine metal, screen mask, and back side glass cleaners. In addition, it provides inkjet printing system; and reflow and wet blast systems. STI Co., Ltd. was founded in 1997 and is headquartered in Anseong-si, South Korea.
Stock analysis
STI Co. Ltd (039440) currently trades at 21,400 KRW, while our model-based Fair Value estimate is 19,517 KRW, implying the stock looks roughly 9.6% fairly valued today.
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Valuation
Bull case: the Growth Earnings group reads highest at a median of 24,378 KRW per share, and 7 of the 24 models we run sit above the 21,400 KRW price.
Bear case: the Earnings-Based group reads lowest at 6,763 KRW, and 17 of the 24 models stay below the price. Evidence for this calculation is medium.
Scenario range: 13,017 KRW (bear) to 27,587 KRW (bull), the price of 21,400 KRW 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 55/100 (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.
STI Co. Ltd reported revenue of 328B KRW in FY2025 versus 320B KRW in FY2021, a compound +0.7%/yr. Reported net income was 15.4B KRW in FY2025, compounding −9.7%/yr from FY2021.
Key figures
Market cap 365B KRW (≈ $268M) · P/S ratio 1.15 · Dividend yield 0.7% · Net margin 4.7% · Return on equity 6.3% · Return on assets (EBIT) 7.7% · Operating margin 0.5% · Revenue (TTM) 318B KRW.
Competitive moat
Our AI-assisted moat analysis scores the competitive advantage at 42 out of 100 (low confidence).
What moves the price
The share trades about 48% below its 52-week high and 19% above its 52-week low, currently below its 200-day average.
For context, the median of 10 Technology peers we cover trades at −22% fair-value upside, at −9%, 039440 screens cheaper than that median.
Fair Value models
Bear 13,017 KRWFair Value 19,517 KRWBull 27,587 KRW
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.
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.40/100
Revenue growth is inconsistent: the periods point in different directions, so there is no trend to rely on.
Revenue growth 1 year
−1.8%
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.
−8.1%
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.
+4.0%
Start year 2020 (pandemic). Over 10 years: +10.1% a year
Revenue growth 14 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.
+9.4%
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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. Basis: EBIT basis. 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.
−4.0%
Earnings growth per share plus dividend.
Earnings per share, growth per year−4.7%
Dividend (yield on the price)0.7%
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.−8% vs −1%, 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.6% → 6%
Start year 2020 (pandemic)
Growth Forecast
A lot of optimism in the price
The price assumes more growth than the company has delivered so far.
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).
+26.0%
Yearly growth needed for the next five years to justify today's price.
What forecasts expect
n/a
No analyst forecast available.
After inflation (South Korea: IMF forecast 2.1% a year to 2030, 2.1% from 2016 to 2025) that is about +23.4% a year for the price.
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 · 219 stocks
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Is STI Co. Ltd (039440) overvalued or undervalued?
As of Sep 24, 2026, our model estimates a fair value of 19,517 KRW versus a price of 21,400 KRW, about −9% upside (fairly valued).
What is the fair value of 039440?
Our model-based fair value for STI Co. Ltd is 19,517 KRW (as of Sep 24, 2026), built from audited fundamentals. The current price: 21,400 KRW.
What is the quality score of 039440?
STI Co. Ltd has a Quality Score of 55/100. 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 STI Co. Ltd (039440)?
Our model-based price target is the fair value of 19,517 KRW (as of Sep 24, 2026) from 24 valuation models. Cautious scenario 13,017 KRW, optimistic scenario 27,587 KRW. It is a calculation from audited fundamentals, not an analyst target.
What is the STI Co. Ltd stock forecast for 2026?
Our models put fair value at 19,517 KRW, about −9% upside versus a price of 21,400 KRW (fairly valued). Cautious scenario 13,017 KRW, optimistic scenario 27,587 KRW. The calculation is refreshed regularly with new filings.
What is the revenue of STI Co. Ltd (039440)?
STI Co. Ltd reported trailing-twelve-month revenue of about 318B KRW (latest available figure, as of Sep 24, 2026).
Does STI Co. Ltd pay a dividend?
STI Co. Ltd currently shows a dividend yield of about 0.70% relative to its recent price (as of Sep 24, 2026).
What growth is priced into STI Co. Ltd (039440)?
For today's price to be fair in a discounted-cash-flow model, STI Co. Ltd would have to grow free cash flow by +26.0 % per year for five years (discount rate 14.3 %, then slowing evenly to 2 % perpetual growth by year ten). Over the last 5 years revenue grew +4.0 % per year. As of Sep 24, 2026.
What discount rate (WACC) does the fair value of 039440 use?
Our models discount STI Co. Ltd at 14.3 %: a base by market capitalisation (micro), damped by beta 1.36, 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 STI Co. Ltd that is +26.0 % per year a year over ten years, using the same discount rate (14.3 %) and the same formula as our fair value.
How much growth has STI Co. Ltd (039440) delivered so far?
Over the past 5 years revenue at STI Co. Ltd grew +4.0 % a year. The price currently implies +26.0 % 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 STI Co. Ltd (039440) growing?
The median revenue growth in the sector is +8.1 % a year. That is the yardstick for the growth priced into STI Co. Ltd (+26.0 % 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 STI Co. Ltd (039440)?
The free-cash-flow yield on the price is 2.85 %: that much free cash flow STI Co. Ltd produces per unit of market value. When it exceeds the discount rate of our models (14.3 %), the business already earns more than its cost of capital demands, and the price needs little additional growth.
What is the intrinsic value of STI Co. Ltd (039440)?
Intrinsic value and fair value mean the same thing: what the business is worth on its numbers, independent of the share price. For STI Co. Ltd it is 19,517 KRW per share (as of Sep 24, 2026), against a price of 21,400 KRW. It is the blended result of 24 valuation models (cash flow, earnings, asset, dividend).
Is STI Co. Ltd stock overvalued or undervalued in 2026?
As of Sep 24, 2026, 039440 trades above its calculated fair value: price 21,400 KRW, fair value 19,517 KRW, a gap of about −9% (fairly valued). 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 039440?
No. The price is what the market pays today (21,400 KRW); the fair value is what the company's own numbers justify (19,517 KRW). For STI Co. Ltd the two are 1,883 KRW per share apart. That gap is exactly why we show both numbers side by side.
How much is STI Co. Ltd worth?
The market values STI Co. Ltd at about 365B KRW (market capitalisation, as of Sep 24, 2026). Per share that is 21,400 KRW; our models calculate a fair value of 19,517 KRW per share.
What do the bullish and bearish scenarios say about 039440?
Our models span a range for STI Co. Ltd: cautious scenario 13,017 KRW, base 19,517 KRW, optimistic 27,587 KRW per share (as of Sep 24, 2026, price 21,400 KRW). The range comes from different growth and margin assumptions, not from analyst opinions.
How solid is the balance sheet of STI Co. Ltd (039440)?
Balance-sheet figures for STI Co. Ltd (as of Sep 24, 2026): return on equity 6.3%. They feed the Quality Score of 55/100, which measures business quality independently of the share price.
How far is 039440 from its 52-week high?
STI Co. Ltd trades at 21,400 KRW, about 48% below its 52-week high of 40,850 KRW and 19% above the low of 17,980 KRW (as of Sep 23, 2026). Distance from the high says nothing about value: that is what the fair value of 19,517 KRW is for.
Which stocks are comparable to STI 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 STI Co. Ltd stock attractive at the current price?
The data as of Sep 24, 2026: price 21,400 KRW, calculated fair value 19,517 KRW (−9%), Quality Score 55/100, from 24 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 039440 calculated?
We run STI Co. Ltd through 24 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 19,517 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 14.0 % above its aggregate fair value. STI 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 STI Co. Ltd (039440)?
The closing price on Sep 23, 2026 was 21,400 KRW. Our model-based fair value is 19,517 KRW, about −9% upside (fairly valued). We carry closing prices from our data provider, not a live tick.
What should I pay attention to with STI Co. Ltd right now?
The price sits close to our fair value, market and models broadly agree here, little valuation tension. A fairly wide model range (13,017 KRW to 27,587 KRW) leaves room in how you read the outcome.
Key figures of STI Co. Ltd
How large is the market capitalisation of STI Co. Ltd (039440)?
The market capitalisation of STI Co. Ltd is 365B KRW (≈ $268M). 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 STI Co. Ltd (039440)?
The price-to-sales ratio of STI Co. Ltd is 1.15 (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 STI Co. Ltd (039440)?
The dividend yield of STI Co. Ltd is 0.7%. 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 STI Co. Ltd (039440)?
The net margin of STI Co. Ltd is 4.7% (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 STI Co. Ltd (039440)?
The return on equity (ROE) of STI Co. Ltd is 6.3% (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 STI Co. Ltd (039440)?
On an EBIT basis the return on assets of STI Co. Ltd is 7.7% (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 STI Co. Ltd (039440)?
The operating margin of STI Co. Ltd is 0.5% (last twelve months). Profit from the core business (before interest and taxes) relative to revenue.
How fast is revenue growing at STI Co. Ltd (039440)?
Revenue at STI Co. Ltd is growing −12.2% versus a year earlier (3y avg −8.1%). 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 STI Co. Ltd (039440)?
Earnings per share at STI Co. Ltd are growing +62.9% versus a year earlier. How much earnings per share grew versus a year earlier.
How much net debt does STI Co. Ltd (039440) carry?
The net debt of STI Co. Ltd is 4.8B KRW (fiscal year 2021, ≈ 0.5 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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