Both stocks run through our valuation models. Here is how Q.S.I Co. (066310) and TES Co. (095610) compare, as of Aug 11, 2026.
As of Aug 11, 2026, Fair Value Calculator sees Q.S.I Co. as the less overvalued of the two: Q.S.I Co. trades at KRW 7,660 versus a fair value of KRW 4,787 (-38%), while TES Co. trades at KRW 142,600 versus KRW 48,953 (-66%).
Q.S.I Co.
066310.KQ · KRW · Information Technology
-38%
upside to fair value
overvalued
PriceKRW 7,660
Fair ValueKRW 4,787
Quality63/100
TES Co.
095610.KQ · KRW · Information Technology
-66%
upside to fair value
overvalued
PriceKRW 142,600
Fair ValueKRW 48,953
Quality69/100
Head-to-head numbers
Green value = the better side for that row (for valuation multiples: lower = cheaper).
Q.S.I Co.TES Co.
Valuation
—EV/EBITDA0.7×
1.4%Dividend yield1.9%
Profitability
14%Net margin17%
6%Operating margin14%
215%Return on equity—
1%Return on assets9%
Growth
-23%Revenue growth (YoY)67%
0.8%Avg. growth/yr (3Y)-0.6%
0.2%Avg. growth/yr (5Y)7.4%
Balance & size
0.09×Debt / equity0.12×
$45MMarket cap$2B
weakGrowth qualityhealthy
TES Co. leads: 2 to 6 metric wins.
Dash = not meaningfully computable, for example with negative equity.
Quality in detail
The quality score, broken down into the same factor families as on the stock page, 0 to 100 per family.
Q.S.I Co.of which business quality 62 · market factors 18TES Co.of which business quality 68 · market factors 72
ProfitabilityMargins and returns on capital today
25
56
Quality GrowthAre margins and returns improving?
40
73
CashflowEarnings quality: real cash, not paper profit
InvestmentDisciplined investing over empire-building
82
50
Low VolatilityCalm price path (market factor)
16
25
MomentumPrice trend over the last 3–12 months (market factor)
18
100
52W MomentumDistance to the 52-week high (market factor)
20
78
Net IssuanceBuybacks instead of dilution
70
87
What the models say
The median fair value (base case) per model family, each in the currency of its trading venue. Green = above the current price, red = below.
Q.S.I Co.
DCF ModelsKRW 5,489
Earnings-BasedKRW 2,200
MultiplesKRW 4,787
Asset-BasedKRW 6,555
Growth DCFKRW 4,375
Economic ProfitKRW 4,035
Growth EarningsKRW 4,269
22 of 22 models see the stock below the current price.
TES Co.
DCF ModelsKRW 71,102
Earnings-BasedKRW 65,569
Dividend DiscountKRW 10,171
MultiplesKRW 46,681
Asset-BasedKRW 13,279
Growth DCFKRW 71,996
Economic ProfitKRW 35,415
Growth EarningsKRW 84,671
26 of 26 models see the stock below the current price.
Scenario ranges
From our cautious bear case to the optimistic bull case. The white tick is the current price: left of fair value means room to run.
Q.S.I Co.
Bear KRW 3,590Fair Value KRW 4,787Bull KRW 5,983
KRW 7,660 = current price (white tick)
TES Co.
Bear KRW 36,715Fair Value KRW 48,953Bull KRW 80,911
KRW 142,600 = current price (white tick)
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Ranked within their sector
Where each stock sits within its sector peer group. Band = middle 50% of peers, tick = median, dot = this stock.
Q.S.I Co. · Information Technology
Quality score63 · above median
Fair value upside-38% · below median
TES Co. · Information Technology
Quality score69 · Top 25%
Fair value upside-66% · below median
Bottom line
As of Aug 11, 2026, Fair Value Calculator sees Q.S.I Co. as the less overvalued of the two: Q.S.I Co. trades at KRW 7,660 versus a fair value of KRW 4,787 (-38%), while TES Co. trades at KRW 142,600 versus KRW 48,953 (-66%).
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A model-based valuation snapshot from 21 models. Values change with price and fundamentals; the date shown above applies.
