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STOCK COMPARISON

IS Dongseo vs Quanta Services: Fair Value & Quality

Both stocks run through our valuation models. Here is how IS Dongseo (010780) and Quanta Services (PWR) compare, as of Sep 25, 2026.

As of Sep 25, 2026, Fair Value Calculator sees IS Dongseo as the less overvalued of the two: IS Dongseo trades at KRW 14,960 versus a fair value of KRW 12,257 (-18%), while Quanta Services trades at $635 versus $163 (-74%).
IS Dongseo
010780.KO · KRW · Industrials
-18%
upside to fair value
overvalued
PriceKRW 14,960
Fair ValueKRW 12,257
Quality53/100
Quanta Services
PWR · USD · Industrials
-74%
upside to fair value
overvalued
Price$635
Fair Value$163
Quality50/100
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Head-to-head numbers

Green is the better side of a row, red the weaker one (for valuation multiples: lower = cheaper). Grey rows are for reference only and are not scored.

betterweakerfor reference, not scored

IS DongseoQuanta Services
Valuation
n/aP/E (TTM)87.2×
n/aP/S (TTM)3.20×
n/aP/B10.77× · book value is mostly goodwill
n/aEV/EBITDA38.0×
n/aPEG1.84×
−18.1%Fair value upside−74.3%
3.3%Dividend yield0.1%
KRW 500Dividend per share$0.42
Profitability
27%Operating margin4%
0.32×EBIT margin trend (5Y)1.02×
5%Return on equity14%
3%Return on assets5%
Growth
46%Revenue growth (YoY)26%
-18.5%Avg. growth/yr (3Y)18.4%
0.6%Avg. growth/yr (5Y)20.4%
n/aValue creation/yr+16.8%
Balance & size
0.7×Interest coverage (EBIT/interest)6.3×
0.23×Debt / equity0.59×
$382MMarket cap$96B
weakGrowth qualityhealthy

Quanta Services leads: 4 to 6 metric wins.

n/a = 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.

IS Dongseoof which business quality 47 · market factors 14 Quanta Servicesof which business quality 52 · market factors 61
ProfitabilityMargins and returns on capital today
10
45
Quality GrowthAre margins and returns improving?
48
44
CashflowEarnings quality: real cash, not paper profit
50
59
Fin. StrengthBalance sheet, leverage, solvency risk
25
55
InvestmentDisciplined investing over empire-building
98
36
Low VolatilityCalm price path (market factor)
34
41
MomentumPrice trend over the last 3–12 months (market factor)
6
62
52W MomentumDistance to the 52-week high (market factor)
6
81
Net IssuanceShare count: buybacks or dilution?
92
72

What the models say

How far the median fair value (base case) per model family sits from the current price, in percent. The amount in the currency of the trading venue is shown underneath.

above the price, more than 15% above close to the price, 85% to 115% of the price below the price, more than 15% below

Model familyIS DongseoPrice KRW 14,960Quanta ServicesPrice $635
DCF Models+291%above the priceKRW 58,537-62%below the price$238
Earnings-Based-27%below the priceKRW 10,994-82%below the price$111
Dividend Discountn/a-99%below the price$7.09
Multiples+164%above the priceKRW 39,537-79%below the price$130
Asset-Based+87%above the priceKRW 28,044-94%below the price$39.91
Growth DCF+265%above the priceKRW 54,582-61%below the price$250
Economic Profit-27%below the priceKRW 10,994-90%below the price$64.82
Growth Earningsn/a-74%below the price$163
Minimum-27%below the priceKRW 10,994-99%below the price$7.09
Maximum+291%above the priceKRW 58,537-61%below the price$250
Median+126%above the priceKRW 33,791-81%below the price$121
Geometric mean+84%above the priceKRW 27,454-87%below the price$84.43

Minimum, maximum, median and geometric mean refer to the family values in this table. Geometric because deviations are ratios: half the price and twice the price average to 100%, not 125%.

IS Dongseo: 2 of 13 models see the stock below the current price.

Quanta Services: 26 of 26 models see the stock below the current price.

Scenario ranges

From our cautious bear scenario to the optimistic bull scenario. The white tick is the current price (value above it), the green tick the fair value (value below it): if the price sits left of the fair value, there is room to rise.

Quanta Services
Price $635
Fair Value $163
Bear $108Bull $212

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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.

IS Dongseo · Industrials

Quality score53 · above median
Fair value upside-18% · below median

Quanta Services · Industrials

Quality score50 · below median
Fair value upside-74% · bottom 25%

Bottom line

As of Sep 25, 2026, Fair Value Calculator sees IS Dongseo as the less overvalued of the two: IS Dongseo trades at KRW 14,960 versus a fair value of KRW 12,257 (-18%), while Quanta Services trades at $635 versus $163 (-74%).

IS Dongseo has the higher quality score (53/100).

Open IS Dongseo live analysis →

More comparisons

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A model-based valuation snapshot from 26 models. Values change with price and fundamentals; the date shown above applies.