STI Co (039440) Fair Value & Analysis
Technology · KR · Market cap 365B KRW
Fair value as of: Jul 22, 2026
From 24 valuation models · updated 19 days ago
Fair value updated Jul 22, 2026, revised from 19,715 KRW to 22,295 KRW (+13.1%) since Jul 6, 2026. Share price −10.2% over the past month.
A solid business, currently priced close to our fair value.
What matters now
- The price sits close to our fair value, market and models broadly agree here, little valuation tension.
- A fairly wide model range (14,821 KRW to 29,565 KRW) leaves room in how you read the outcome.
Price vs Fair Value (5 years)
White line = price, green steps = our fair value per fiscal year, dashed = 300-day average. As of Jul 22, 2026.
How to read this chart
60‑month range 10,428 KRW – 41,222 KRW · fair‑value band 14,821 KRW – 29,565 KRW · the 23,650 KRW price screens above the 22,295 KRW fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). Dashed = 300-day average. As of Jul 22, 2026.
Analysis
STI Co (039440) currently trades at 23,650 KRW, while our model-based Fair Value estimate is 22,295 KRW, implying the stock looks roughly 5.7% fairly valued today. The Quality Score stands at 55/100 (solid quality), in the Technology sector. Bear case: priced above our estimate, the market already discounts strong expectations. Bull case: above-average quality can justify a premium, the entry price still matters most (evidence: high).
Over the trailing twelve months, STI Co generated revenue of 318B KRW at a net margin of 5.5%. Revenue declined 12.2% year over year. It earns a return on equity of 6.3%. Net debt stands at 4.8B KRW. Fundamentals as of Jul 22, 2026
Our scenario range runs from 14,821 KRW (bear case) to 29,565 KRW (bull case); at 23,650 KRW, the current price sits within that range. Bear and bull are the same models run on conservative and optimistic assumptions (margins, growth, valuation multiples), so a plausible valuation range, not a price target. The share trades about 45% below its 52-week high and 37% above its 52-week low, currently below its 200-day average. For context, the median of 10 Technology peers we cover trades at -75% fair-value upside, at -6%, 039440 screens cheaper than that median.
Fair Value models
Each model estimates fair value its own way; the Fair Value above is the evidence-weighted blend. Evidence (0–100) measures how completely this model’s inputs are available: well-fed models carry more weight in the blend. The spread across models is intentional, each one stresses a different value driver; dividend models, for instance, come out structurally low when payout is small.
All 24 models by family
Widest divergence: Multiples (19,722 KRW) versus Earnings-Based (6,763 KRW). Highest evidence: Growth DCF (80).
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Key figures & financial health
More key figures
Figures from reported company fundamentals · as of Jul 22, 2026. TTM = trailing twelve months.
Quality Score breakdown
Of which business quality 56 · Market factors (momentum, volatility) 28
Non-valuation factor families (profitability, growth, cashflow, financial strength, momentum …), each academically grounded. Valuation itself sits in the Fair Value and is deliberately excluded here to avoid double-counting.
About the company
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.
Full company description
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.
Company description, as reported by the company or data provider.
Revenue & earnings trend
FY2021 – FY2025 · reported fiscal years
STI Co 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.
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Peer Group
Semiconductor Equipment & Materials · 213 stocks
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.
Valuation Multiples vs Semiconductor Equipment & Materials median · lower = cheaper
Snowflake
Five quick dimensions, each 0 to 100: VALUE (fair-value potential), FUTURE (revenue growth), PAST (return on equity), HEALTH (low debt), DIVIDEND (yield). Green = this stock, grey = typical sector peer.
Values & ESG
Does this company touch areas you may want to avoid? The classification is inferred from sector and industry.
ESG scores are not available for this stock yet. Values and ESG data are contextual and can differ between providers.
Similar stocks
10 more Semiconductor Equipment & Materials stocks, each showing price versus our Fair Value estimate (as of Jul 22, 2026).
| Stock | Price | Fair Value | vs Fair Value |
|---|---|---|---|
| ASML Holding ASML | C$50.50 | C$15.57 | -69% |
| Applied Materials, Inc AMAT | $579.43 | $143.08 | -75% |
| Lam Research Corporation LRCX | $346.10 | $67.57 | -80% |
| KLA Corporation KLAC | $212.75 | $53.01 | -75% |
| NAURA Technology Group 002371 | ¥774.20 | ¥151.43 | -80% |
| Advanced Micro-Fabrication Equipment Inc 688012 | ¥350.69 | ¥41.79 | -88% |
| Piotech Inc 688072 | ¥832.00 | ¥431.44 | -48% |
| Hon. Precision, Inc 7769 | 6,005 TWD | 1,804 TWD | -70% |
| Hangzhou Changchuan Technology Co 300604 | ¥325.24 | ¥33.33 | -90% |
| MPI Corporation 6223 | 5,600 TWD | 609.44 TWD | -89% |
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How we calculate Fair Value
Each company is valued through a stack of independent intrinsic-value models (DCF variants, residual-income, multiples and more), blended into one family-balanced consensus and weighted by how much trustworthy data backs it. A separate quality layer scores the fundamentals. Every input is real reported data, nothing guessed.
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