STX Engine

077970 · KOSPI · ₩077970 · STX엔진

₩15,280▼ ₩490 (3.11%)End-of-day · Oct 30, 2026 · End-of-day prices.
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Valuation model · Discounted cash flow (DCF)

We use a 5-year discounted cash flow: the value of the cash the business is expected to produce, in today's money.

Fair value per share

₩11,700

vs the current price (₩15,280)

Enterprise value
₩672B
Equity value
₩470B
WACC
6.8%

Model estimate based on the assumptions shown. Not a price target and not a buy or sell signal. This is not financial advice.

Bear / Base / Bull

Bear
₩872
−94.3%
Base
₩11,700
−23.4%
Bull
₩31,517
+106.3%

Bear: revenue growth 3 points lower every year, EBIT margin 2 points lower, WACC 1 point higher. Bull: the opposite.

Assumptions

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Cycle options

Margin path

Every year uses the cycle-average margin (4.3%).

Revenue growth

  • 13.2%

    How much sales grow that year, compared with the year before.

    Default: the last 3 years' revenue growth (13.2% a year, annual reports), fading to 3% by year 5.

  • 10.7%

    How much sales grow that year, compared with the year before.

    Default: the last 3 years' revenue growth (13.2% a year, annual reports), fading to 3% by year 5.

  • 8.1%

    How much sales grow that year, compared with the year before.

    Default: the last 3 years' revenue growth (13.2% a year, annual reports), fading to 3% by year 5.

  • 5.6%

    How much sales grow that year, compared with the year before.

    Default: the last 3 years' revenue growth (13.2% a year, annual reports), fading to 3% by year 5.

  • 3%

    How much sales grow that year, compared with the year before.

    Default: the last 3 years' revenue growth (13.2% a year, annual reports), fading to 3% by year 5.

Business

  • 4.3%

    Operating profit as a share of revenue.

    Default: through-the-cycle average of the last 12 months and the last 5 annual reports' operating margins.

  • 27.5%

    Share of operating profit paid as corporate tax.

    Default: Korea's top corporate tax rate (25%) plus 10% local income tax.

  • 2%

    The non-cash cost of wearing out equipment, added back to cash flow (% of revenue).

    Default: not in the statements, so 80% of capital spending (most spending replaces equipment that wears out).

  • 2.5%

    Money spent on factories, equipment, software and other long-term assets (% of revenue).

    Default: average of the last 3 annual reports (cash flow statements; equipment and intangibles).

  • 0.3%

    Stock and unpaid customer bills, less unpaid supplier bills, as a % of revenue. Each year's extra revenue ties up this much more cash.

    Default: working capital (current assets less cash and deposits, minus current liabilities other than borrowings) as a share of revenue, averaged over the last 3 years.

Discount rate

  • 2%

    How fast cash flows keep growing every year after year 5.

    Default: about Korea's long-run inflation plus real growth.

  • 4.01%

    Yield on Korea's 10-year government bond: the return with almost no risk.

    Default: Korea Treasury Bond 10-year yield on 2026-10-30.

  • 0.68

    How much the share moves when the market moves: 1 means just like the market.

    Default: 104 weeks of weekly returns against KOSPI (official index); raw beta 0.52, adjusted toward 1 and kept between 0.6 and 2.0.

  • 5.5%

    The extra return investors want for owning shares instead of bonds.

    Default: a typical premium for Korean shares.

  • 5.51%

    The interest rate the company would pay to borrow.

    Default: the 10-year yield plus a 1.5% credit spread.

Starting point

Revenue (TTM to H1 2026)
₩839B
Net debt (borrowings and leases − cash and deposits)
₩216B
+ Stakes and investments
₩13B
Associates, long-term financial assets and deposits (book value)
Shares
40,148,063
Share price
₩15,280
Market cap
₩613B

TTM = trailing 12 months: the last four reported quarters added together. "TTM to H1 2026" is the 12 months up to the latest quarterly or half-year report (H1 = to the end of June). Year 1 grows from there.

Past years and projection

Grey columns are reported results from the annual reports (after-tax EBIT at the model's tax rate), so you can check the growth and margin assumptions against the past. Years 1–5 are the model.

FY2023FY2024FY2025Year 1Year 2Year 3Year 4Year 5
Revenue₩630B₩725B₩789B₩949B₩1.1T₩1.1T₩1.2T₩1.2T
Growth15.9%14.9%8.9%13.2%10.7%8.1%5.6%3.0%
EBIT₩19B₩42B₩70B₩41B₩45B₩49B₩52B₩53B
EBIT margin3.0%5.8%8.8%4.3%4.3%4.3%4.3%4.3%
After-tax EBIT₩14B₩31B₩50B₩30B₩33B₩35B₩37B₩39B
+ Depreciation———₩19B₩21B₩23B₩24B₩25B
− Capital spending₩16B₩18B₩19B₩24B₩26B₩28B₩30B₩31B
− Working capital₩7.5B−₩290B₩328B₩332M₩305M₩255M₩191M₩108M
Free cash flow———₩25B₩27B₩29B₩31B₩32B
Discount factor———0.9370.8770.8220.7690.721
Present value———₩23B₩24B₩24B₩24B₩23B

Terminal value ₩769B, worth ₩554B today: 82% of enterprise value. It assumes spending settles at 110% of depreciation once growth slows to the terminal rate.

Cross-check: what the market has paid before

For cyclical businesses, analysts check a DCF against the multiples the stock has traded at through past cycles. Price / book is the usual anchor for them: P/E looks highest at the bottom of a cycle, when earnings are smallest, and lowest at the top. The price each band would give today:

LowTypicalHigh
Price / book (book value ₩9,538 a share)Now 1.60×₩17,4631.83×₩21,1422.22×₩39,2674.12×
Price / earnings (last 12 months: ₩1,682 a share)Now 9.09×₩25,00014.9×₩48,49928.8×₩79,61247.3×
P/E on run-rate earnings (Q2 2026 × 4: ₩2,207 a share)Now 6.92×₩32,81914.9×₩63,66728.8×₩104,51047.3×

Low, typical and high are the 10th percentile, middle and 90th percentile of month-end multiples since 2021, each against the latest report out by then, per share at today's share count; loss years and P/E above 100 are left out. Run-rate earnings are one quarter × 4, not a forecast. Model estimate based on the assumptions shown. Not a price target and not a buy or sell signal.

Sensitivity

Fair value per share as two inputs change; the middle is the current case.

WACC ↓ · Terminal growth →1.0%1.5%2.0%2.5%3.0%
5.8%₩12,322₩14,072₩16,286₩19,176₩23,110
6.3%₩10,617₩12,007₩13,724₩15,895₩18,730
6.8%₩9,208₩10,336₩11,700₩13,383₩15,513
7.3%₩8,024₩8,954₩10,061₩11,399₩13,051
7.8%₩7,017₩7,795₩8,707₩9,792₩11,105

Now (TTM)

Market cap
₩613B
Enterprise value
₩829B
P/E
9.1×
P/B
1.6×
P/S
0.7×
EV/EBITDA
—
Dividend yield
0.0%

Over time (at each year end)

20252024202320222021
Price₩34,000₩20,100₩11,850₩13,450₩9,600
Market cap₩1.4T₩807B₩476B₩540B₩385B
P/E19.8×29.7×83.7×—383.5×
P/B4.0×2.9×1.8×2.1×1.4×
P/S1.7×1.1×0.8×1.0×0.8×
EV/EBITDA—————
Dividend yield0.0%————

Versus similar companies

CompanyP/EP/BP/SEV/EBITDADividend yield
STX Engine9.1×1.6×0.7×—0.0%
Doosan Enerbility193.9×4.3×2.0×—0.0%
Hanmi Semiconductor78.4×23.3×31.6×70.6×0.4%
Jusung Engineering1,058.2×13.0×34.0×2,036.0×0.0%
Rainbow Robotics4,137.6×53.0×156.2×—0.0%
EO Technics44.1×6.4×10.8×—0.0%
Doosan Bobcat13,622.5×911.6×733.9×—3.5%
Similar companies (median)626.0×18.1×32.8×1,053.3×0.0%

Calculated from end-of-day prices and filed financial statements. Not a recommendation. This is not financial advice.

Also known as: STX Engine / STX엔진 / 077970 / KRX:077970

Source: KRX statistical information