STLDSteel Dynamics, Inc.

$238.42+72% 1Y

Is the business good?

Mixed

The checks split: earnings fully cash-backed (1.0×), but margins compressing.

1 good, 1 to watch, 2 neutral
Fundamental health (F-score)5 / 9SEC EDGAR · Dec 31, 2025

Mixed fundamental signals. Nine pass/fail tests of year-over-year health from the filings.

Profits arrive as cash0.97×derived · Jun 30, 2026

Operating profit is fully backed by cash. Conversion is worsening vs a year ago.

Margin direction, 3 years−16.6 pts

Positive operating leverage, operating profit is growing faster than sales, so margins widen as the business scales.

Where ROE comes from8% ROA

A balanced mix of margins, efficiency, and leverage. ROE 14% = margin × turnover × leverage.

Unless marked, from derived.

Against the whole market›

Percentile against every name Ryufin tracks. Higher is better; the tick marks the middle of the market. Context, not one of the checks above.

FCF conversionbehind 80% of the market
Leverage (Debt/EBITDA)better than 71% of the market

Where this answer is blind. The F-score rewards improvement, so an already-elite company can score mid-pack.

How good a business is STLD?

Steel Dynamics, Inc. earns 12% on the capital it employs against a 9.0% cost of capital, so the business is worth more the bigger it gets.

12%

Return on invested capital · cost of capital 9.0% · 3.5 points above what the capital costs: growth creates value

Operating margin
10%

Operating margin · Steel median 5.3% · 12 months to Q2 2026

Cash conversion
0.97×

Cash conversion · 1.52× a year ago · operating cash flow covers the operating profit after tax

Share count, year on year
−2.9%

Share count, year on year · bought back, each share owns more of the company

Operating margin by fiscal year
YearOperating margin
FY20208.8%
FY202123%
FY202223%
FY202317%
FY202411%
FY20258.1%
Details›
Gross margin12 months to Q2 2026
15%
Operating margin12 months to Q2 2026
10%
Net margin12 months to Q2 2026
7.8%
Free cash flow margin
4.7%
Revenue, trailing twelve months
$20.5B
Free cash flow, trailing twelve months
$956M
Net income, trailing twelve months
$1.60B
Return on invested capitaloperating profit after tax ÷ debt + equity − cash
12%

Margins, capital and share counts from the statements as filed with the SEC; cash conversion is operating cash flow over operating profit after tax.