FIXComfort Systems USA

$1,715.98+115% 1Y

Is the business good?

Excellent

A genuinely good business: 7 of 9 health tests passed, earnings fully cash-backed (1.8×), and margins widening.

4 good
Fundamental health (F-score)7 / 9SEC EDGAR · Dec 31, 2025

High fundamental quality. Nine pass/fail tests of year-over-year health from the filings.

Profits arrive as cash1.77×derived · Jun 30, 2026

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

Margin direction, 3 years+9.5 pts

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

Where ROE comes from16% ROA

High-quality, exceptional returns on the assets themselves, not leverage. ROE 42% = 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 conversionbetter than 75% of the market
Leverage (Debt/EBITDA)top 3% 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 FIX?

Comfort Systems USA keeps 16% of every revenue dollar as operating profit, against 7.5% for the median Engineering & Construction name.

16%

Operating margin · Engineering & Construction median 7.5% · 12 months to Q2 2026

Cash conversion
1.77×

Cash conversion · 0.92× a year ago · operating cash flow covers the operating profit after tax

Share count, year on year
−0.33%

Share count, year on year · flat: no meaningful dilution

Gross margin
26%

Gross margin

Operating margin by fiscal year
YearOperating margin
FY20206.7%
FY20216.1%
FY20226.1%
FY20238.0%
FY202411%
FY202514%
Details›
Gross margin12 months to Q2 2026
26%
Operating margin12 months to Q2 2026
16%
Net margin12 months to Q2 2026
13%
Free cash flow margin
19%
Revenue, trailing twelve months
$11.2B
Free cash flow, trailing twelve months
$2.16B
Net income, trailing twelve months
$1.43B

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