FIX vs LII vs AOS Stock Comparison

Comfort Systems Usa, Lennox International and Smith A O Prices as of Oct 23, 2026 Peers: Industry group
FIX Comfort Systems Usa Inc
$1,160.00 -28.6% 1M +40.6% 1Y
Market cap
$43.65B
P/E
26.8x
Revenue (TTM)
$5.27B
Div. yield
0.00%
HVAC Industrials
6 wins
AOS Smith A O Corp
$61.65 +6.8% 1M -10.7% 1Y
Market cap
$8.49B
P/E
17.0x
Revenue (TTM)
$3.80B
Div. yield
0.02%
HVAC Industrials
3 wins

Head to Head

12 decided of 12

Comfort Systems Usa leads on 6 of the 12 questions below (Comfort Systems Usa 6, Lennox International 3, Smith A O 3). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionFIXLIIAOSLeader
Larger companyMarket capitalisation $43.65B $12.70B $8.49B FIX
Cheaper on earningsLower P/E, profitable companies only 26.8x 16.1x 17.0x LII
Cheaper on forward earningsLower price / next fiscal year consensus EPS 25.4x 16.6x 17.0x LII
Faster revenue growthRevenue growth, trailing twelve months -36.6% -2.1% +0.4% AOS
More profitableNet margin, trailing twelve months 30.9% 14.9% 13.1% FIX
Better return on capitalReturn on invested capital 16.0% 29.8% 20.9% LII
Less leveragedLower net debt / EBITDA -2.0x 1.3x 0.6x FIX
Higher dividend yieldTrailing dividend yield 0.00% 0.01% 0.02% AOS
Better 1-year returnPrice return, last 12 months +40.6% -24.0% -10.7% FIX
Better 5-year returnAnnualised price return, 5 years +69.1%/yr +3.8%/yr -1.6%/yr FIX
Less volatileAnnualised volatility, 1 year 59.0% 41.0% 27.4% AOS
Higher overall scoreMean of the five percentile scores vs peers 72/100 58/100 66/100 FIX

Percentile Scorecard

FIXLIIAOS

Each axis is the mean percentile of its metrics against the company's industry group. 100 is the best in the group, 50 the middle.

Scores by Axis

AxisFIXLIIAOS
Valuation 39 #34 of 55 46 #30 of 55 70 #17 of 55
Growth 86 #8 of 51 46 #28 of 51 38 #32 of 51
Profitability 80 #11 of 51 92 #5 of 51 98 #2 of 51
Financial Health 76 #15 of 59 38 #37 of 59 74 #16 of 59
Shareholder Returns 80 #9 of 41 70 #13 of 41 48 #22 of 41
Overall 72 58 66
  • FIX ranked among 59 companies in Construction Products
  • LII ranked among 59 companies in Construction Products
  • AOS ranked among 59 companies in Construction Products

Price Performance

Price return, split-adjusted, before dividends. Click a name to hide or show it.

Returns

PeriodFIXLIIAOSSPY
1 month -28.6%+1.0%+6.8% -1.0%
3 months -33.0%-30.5%+1.5% +2.9%
6 months -32.8%-23.4%-4.2% +6.4%
Year to date +24.3%-22.5%-7.8% +11.4%
1 year +40.6%-24.0%-10.7% +13.1%
3 years +649.2%+8.9%-7.5% +79.4%
3 years, per year +95.8%+2.9%-2.6% +21.5%
5 years +1,278.3%+20.5%-7.7% +67.7%
5 years, per year +69.1%+3.8%-1.6% +10.9%
10 years +4,163.1%+150.6%+28.2% +255.2%
10 years, per year +45.5%+9.6%+2.5% +13.5%

Risk

MeasureFIXLIIAOSSPY
Volatility, 1Y 59.0%41.0%27.4% 12.7%
Downside volatility, 1Y 62.0%46.0%26.3% 12.7%
Beta vs S&P 500, 1Y 2.611.340.70 1.00
Return / volatility, 1Y 0.69-0.59-0.39 1.03
Max drawdown, 5Y -46.1%-48.6%-43.4% -25.4%
From 52-week high -43.9%-34.4%-23.4% -2.5%
52-week high $2,066.51$572.95$80.47 $779.14
52-week low $825.00$348.85$55.34 $631.97

Valuation History

Weekly multiples on trailing twelve-month fundamentals. Negative or extreme readings (a loss year, a collapsed denominator) are left out so the chart stays readable.

MultipleFIXLIIAOS
P/E now vs peer median 25.0xmedian 19.9x 16.5xmedian 19.9x 16.9xmedian 19.9x
P/S now vs peer median 7.7xmedian 1.5x 2.5xmedian 1.5x 2.2xmedian 1.5x
EV/EBITDA now vs peer median 36.7xmedian 12.6x 12.5xmedian 12.6x 11.6xmedian 12.6x
P/FCF now vs peer median 16.6xmedian 16.1x 17.6xmedian 16.1x 13.1xmedian 16.1x
P/B now vs peer median 12.2xmedian 3.0x 10.0xmedian 3.0x 4.5xmedian 3.0x
PEG now vs peer median 0.31median 0.98 1.22median 0.98 0.64median 0.98

Financial History

Reported figures by fiscal period, placed on the calendar year (or quarter) each period ended in, so companies with different fiscal years line up.

Trailing twelve monthsFIXLIIAOS
Revenue $5.27B $5.30B $3.80B
Gross profit $1.42B $1.77B $1.47B
Operating income $989.51M $1.04B $668.70M
Net income $1.63B $788.60M $500.30M
Free cash flow $2.44B $738.70M $639.40M
EPS (diluted) $46.42 $22.66 $3.63
Cash & equivalents $2.16B $51.50M $181.30M
Total debt $287.92M $1.58B $1.74B
Shares (diluted) 35.15M 34.80M 137.86M
Enterprise value $37.61B $12.50B $7.74B

All Metrics

58 metrics · best in bold

Bold marks the best reading: the lowest positive value for multiples, leverage and payout, the highest for everything else. The bar under each value is its percentile against that company's own peers. Hover a value for its rank and the peer median.

Valuation

12 metrics
MetricFIXLIIAOS
P/E 25.0x 16.5x 16.9x
P/FCF 16.6x 17.6x 13.1x
P/Operating cash flow 13.5x 14.5x 12.1x
P/S 7.7x 2.5x 2.2x
P/B 12.2x 10.0x 4.5x
P/Tangible book 14.6x 12.6x 6.7x
EV/EBITDA 36.7x 12.5x 11.6x
EV/EBIT 38.9x 13.9x 13.2x
EV/Revenue 7.3x 2.7x 2.3x
EV/FCF 15.8x 19.7x 13.8x
EV/Operating cash flow 12.8x 16.2x 12.8x
PEG (3Y EPS CAGR) 0.31 1.22 0.64

Growth

14 metrics
MetricFIXLIIAOS
Revenue growth (1Y) -36.6% -2.1% 0.4%
Revenue CAGR (3Y) 2.0% 3.4% 0.6%
Gross profit growth (1Y) -27.6% -2.2% 1.4%
Gross profit CAGR (3Y) 15.4% 8.5% 1.3%
Operating income growth (1Y) -11.2% -2.6% -5.2%
Operating income CAGR (3Y) 37.8% 12.3% -2.5%
Net income growth (1Y) 94.8% -6.6% -3.5%
Net income CAGR (3Y) 78.4% 12.7% 22.3%
EPS growth (1Y) 96.0% -4.7% -0.3%
EPS CAGR (3Y) 79.7% 13.5% 26.2%
Operating cash flow growth (1Y) 223.9% 7.1% 16.1%
Operating cash flow CAGR (3Y) 71.3% 28.7% 5.0%
Free cash flow growth (1Y) 205.6% 8.6% 29.3%
Free cash flow CAGR (3Y) 67.9% 38.2% 6.2%

Profitability

14 metrics
MetricFIXLIIAOS
Gross margin 26.8% 33.3% 38.6%
EBITDA margin 19.9% 22.0% 20.0%
Operating margin 18.8% 19.7% 17.6%
Pretax margin 19.3% 18.5% 17.0%
Net margin 30.9% 14.9% 13.1%
FCF margin 46.3% 13.9% 16.8%
Operating cash flow margin 57.0% 16.9% 18.2%
Return on equity 16.7% 62.8% 26.9%
Return on assets 6.0% 17.8% 13.7%
Return on invested capital 16.0% 29.8% 20.9%
Return on capital employed 30.6% 35.0% 24.1%
Asset turnover 0.6x 1.2x 1.0x
Cash conversion (OCF / net income) 1.8x 1.1x 1.4x
Stock comp / revenue 0.7% 0.5% 0.4%

Financial Health

11 metrics
MetricFIXLIIAOS
Debt / assets 0.5% 34.8% 17.5%
Debt / equity 0.0x 1.2x 0.3x
Net debt / EBITDA -2.0x 1.3x 0.6x
Debt / FCF 0.0x 2.1x 1.0x
Liabilities / assets 66.0% 71.5% 49.5%
Equity / assets 34.0% 28.5% 50.5%
Interest coverage 125.1x 18.5x 31.5x
Current ratio 1.1x 1.6x 1.6x
Quick ratio 0.4x 0.7x 1.0x
Cash ratio 0.4x 0.0x 0.2x
Altman Z-score 5.28 6.14 6.18

Shareholder Returns

7 metrics
MetricFIXLIIAOS
Dividend yield 0.3% 1.4% 2.3%
Net buyback yield 1.1% 2.6% 3.7%
Shareholder yield 1.3% 4.0% 6.1%
Payout ratio (earnings) 6.5% 23.1% 39.6%
Payout ratio (FCF) 4.3% 24.6% 31.0%
Dividend growth (1Y) 75.6% 11.1% 2.2%
Dividend CAGR (3Y) 57.9% 6.5% 3.2%

Analyst Estimates

Solid lines are reported fiscal-year results; dashed lines are the consensus for the years ahead. Hover a year for the analysts' high and low, and how each result compared with its estimate.

ConsensusFIXLIIAOS
Forward P/E 25.4xFY2026 16.6xFY2026 17.0xFY2026
EPS, next fiscal year $45.66FY2026 $22.66FY2026 $3.62FY2026
EPS growth, next FY +58.1%FY2026 -2.2%FY2026 -6.0%FY2026
EPS growth, the year after +25.2% +8.1% +14.9%
Revenue, next fiscal year $12.26BFY2026 $5.75BFY2026 $3.74BFY2026
Revenue growth, next FY +34.7%FY2026 +10.5%FY2026 -2.3%FY2026
Revenue growth, the year after +33.8% +7.7% +3.9%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersFIXLIIAOS
Held by institutions 93.1% 77.3% 91.9%
Institutions holding 1,352 655 614
Change in shares held, QoQ +0.8% +1.8% +7.1%
Institutions buying 741 315 315
Institutions selling 486 236 226
Buyers to sellers 1.52 1.33 1.39

Return Correlation

Daily returns, last 12 months

1.00 means two stocks move in lockstep, 0 that they move independently. Pairs below about 0.5 diversify each other.

FIXLIIAOS
FIX 1.00 0.29 0.10
LII 0.29 1.00 0.61
AOS 0.10 0.61 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, FIX, LII and AOS?

Comfort Systems Usa (FIX) is the largest by market capitalisation: Comfort Systems Usa (FIX) $43.65B, Lennox International (LII) $12.70B, Smith A O (AOS) $8.49B.

Which stock is cheaper, FIX, LII and AOS?

Lennox International (LII) trades on the lowest price-to-earnings ratio (Comfort Systems Usa (FIX) 26.8x, Lennox International (LII) 16.1x, Smith A O (AOS) 17.0x). On next year's consensus earnings, Lennox International (LII) is cheapest (Comfort Systems Usa (FIX) 25.4x, Lennox International (LII) 16.6x, Smith A O (AOS) 17.0x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Smith A O (AOS) grew revenue fastest over the trailing twelve months: Comfort Systems Usa (FIX) -36.6%, Lennox International (LII) -2.1%, Smith A O (AOS) +0.4%.

Which company is more profitable?

Comfort Systems Usa (FIX) has the highest net margin (Comfort Systems Usa (FIX) 30.9%, Lennox International (LII) 14.9%, Smith A O (AOS) 13.1%). On return on invested capital, Lennox International (LII) leads (Comfort Systems Usa (FIX) 16.0%, Lennox International (LII) 29.8%, Smith A O (AOS) 20.9%).

Which stock has performed better?

Over the past year Comfort Systems Usa (FIX) returned the most: Comfort Systems Usa (FIX) +40.6%, Lennox International (LII) -24.0%, Smith A O (AOS) -10.7%. Over five years, Comfort Systems Usa (FIX) compounded fastest (Comfort Systems Usa (FIX) +69.1%/yr, Lennox International (LII) +3.8%/yr, Smith A O (AOS) -1.6%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Smith A O (AOS) has the highest dividend yield: Comfort Systems Usa (FIX) 0.00%, Lennox International (LII) 0.01%, Smith A O (AOS) 0.02%.

Which stock is riskier?

By one-year price volatility, Smith A O (AOS) has been the steadiest (Comfort Systems Usa (FIX) 59.0%, Lennox International (LII) 41.0%, Smith A O (AOS) 27.4%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, FIX, LII and AOS?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Comfort Systems Usa (FIX) leads on 6. Business Quant does not give investment advice; use the comparison as a starting point for your own research.

Data from SEC filings, exchange prices and consensus estimates, via Business Quant. Percentile scores compare each company with its own peer group, so two companies' scores are each relative to different peers unless you rank against the whole market. Price returns exclude dividends. Nothing on this page is investment advice.