The short version

From the latest prices and each company's SEC filings. Who's ahead on each measure, not which to buy.

  • Steel Dynamics is the larger company, worth $33.3B, about 2.2 times POSCO.
  • Steel Dynamics grew revenue faster over the last year (+33.4% vs -4.7%).
  • Steel Dynamics keeps more of each dollar of revenue as operating profit (10.0% vs 2.0%).
  • On earnings, Steel Dynamics is the cheaper stock (24.7x vs 33.4x).

Side by side

The stronger figure is shaded where higher (or, for valuation multiples, lower) reads as better. How the implied growth works.

MeasurePKXSTLD
Market cap$15.4B$33.3B
Share price$56.26$238.38
Revenue (last fiscal year)$73.46T$18.2B
Free cash flow (last fiscal year)-$1.50T$502M
Revenue growth, last year-4.7%+33.4%
Revenue growth per year, last 5 fiscal years+6.3%-0.3%
Operating margin2.0%10.0%
Net margin1.5%7.8%
Return on equity2.0%17.1%
P/E (trailing)33.4x24.7x
Price / free cash flow—66.3x
EV / EBITDA7.44x13.7x
FCF growth the price implies—20.8%
Dividend yield3.4%0.87%
Debt / equity0.76x0.82x
Fundamental gradeDB
Superinvestors holding it22
Insider purchases, last 12 months01

Results from SEC filings

Revenue and free cash flow by fiscal year, from each company's 10-K filings.

POSCO

YearRevenueFree cash flowOp. margin
2020$57.47T$5.23T3.6%
2021$76.01T$2.76T11.5%
2022$85.00T$766.3B5.1%
2023$77.06T-$1.05T3.6%
2024$73.46T-$1.50T2.0%

Steel Dynamics

YearRevenueFree cash flowOp. margin
2021$18.4B$1.2B23.4%
2022$22.3B$3.6B22.9%
2023$18.8B$1.9B16.8%
2024$17.5B-$24M11.1%
2025$18.2B$502M8.1%

Where the revenue comes from

POSCO · by segments, 2025

Steel$37.28T54%
Trading$23.74T34%
Construction$5.51T8%
Rechargeable Battery Materials$2.10T3%
Logistics and Others$308.7B0%
Others$45.5B0%

Steel Dynamics · by regions, 2025

U.S.$17.0B94%
Non-U.S.$1.2B6%
Compare them in fullFifteen years of statements, quarterly results, DCF and IRR models, and any number of peers side by side.
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Questions

Which is bigger, POSCO or Steel Dynamics?

Steel Dynamics (STLD), at $33.3B against $15.4B.

Is PKX or STLD cheaper?

By trailing P/E, Steel Dynamics (24.7x) is cheaper than POSCO (33.4x). A lower multiple can also mean the market expects less growth.

Which grows faster, PKX or STLD?

Steel Dynamics: revenue grew +33.4% over the last year, against -4.7%.

Prices and ratios as of the last daily update; statements from SEC filings. Information only, not investment advice.