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Q.S.I Co (066310) Fair Value & Analysis

Technology · KR · Market cap 91.7B KRW

Price8,260 KRW
Fair Value5,021 KRW
Upside-39.2%
Quality95/100
Evidence: High Range 4,031 KRW – 6,010 KRW

Fair value as of: Jun 24, 2026

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Analysis

Q.S.I Co (066310) currently trades at 8,260 KRW, while our model-based Fair Value estimate is 5,021 KRW — implying the stock looks roughly 39.2% overvalued today. We read business quality at 95/100 (high 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).

About the company

Q.S.I Co., LTD. develops, manufactures, and sells red and infra-red laser diodes in South Korea and internationally. The company was founded in 2000 and is based in Cheonan-si, South Korea.

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Frequently asked questions

Is Q.S.I Co (066310) undervalued?
As of Jun 24, 2026, our model estimates a fair value of 5,021 KRW versus a price of 8,260 KRW — about −39% (overvalued). Model-based estimate, not financial advice.
What is the fair value of 066310?
Our 21-model fair value for Q.S.I Co is 5,021 KRW (as of Jun 24, 2026), built from audited fundamentals. The current price is 8,260 KRW.
What is the quality score of 066310?
Q.S.I Co has a Quality Score of 95/100, measuring profitability, growth and balance-sheet strength from non-valuation factors.

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.

Educational research only · not financial advice · no buy/sell recommendation. Model-based estimates are not certainties; their reliability depends on data quality and assumptions.