AOS vs FIX vs LII Stock Comparison

Smith A O, Comfort Systems Usa and Lennox International Prices as of Oct 23, 2026 Peers: Industry group
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
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

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.

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

Percentile Scorecard

AOSFIXLII

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

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

Price Performance

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

Returns

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

Risk

MeasureAOSFIXLIISPY
Volatility, 1Y 27.4%59.0%41.0% 12.7%
Downside volatility, 1Y 26.3%62.0%46.0% 12.7%
Beta vs S&P 500, 1Y 0.702.611.34 1.00
Return / volatility, 1Y -0.390.69-0.59 1.03
Max drawdown, 5Y -43.4%-46.1%-48.6% -25.4%
From 52-week high -23.4%-43.9%-34.4% -2.5%
52-week high $80.47$2,066.51$572.95 $779.14
52-week low $55.34$825.00$348.85 $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.

MultipleAOSFIXLII
P/E now vs peer median 16.9xmedian 19.9x 25.0xmedian 19.9x 16.5xmedian 19.9x
P/S now vs peer median 2.2xmedian 1.5x 7.7xmedian 1.5x 2.5xmedian 1.5x
EV/EBITDA now vs peer median 11.6xmedian 12.6x 36.7xmedian 12.6x 12.5xmedian 12.6x
P/FCF now vs peer median 13.1xmedian 16.1x 16.6xmedian 16.1x 17.6xmedian 16.1x
P/B now vs peer median 4.5xmedian 3.0x 12.2xmedian 3.0x 10.0xmedian 3.0x
PEG now vs peer median 0.64median 0.98 0.31median 0.98 1.22median 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 monthsAOSFIXLII
Revenue $3.80B $5.27B $5.30B
Gross profit $1.47B $1.42B $1.77B
Operating income $668.70M $989.51M $1.04B
Net income $500.30M $1.63B $788.60M
Free cash flow $639.40M $2.44B $738.70M
EPS (diluted) $3.63 $46.42 $22.66
Cash & equivalents $181.30M $2.16B $51.50M
Total debt $1.74B $287.92M $1.58B
Shares (diluted) 137.86M 35.15M 34.80M
Enterprise value $7.74B $37.61B $12.50B

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

Growth

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

Profitability

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

Financial Health

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

Shareholder Returns

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

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.

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

Institutional Ownership

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

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.

AOSFIXLII
AOS 1.00 0.10 0.61
FIX 0.10 1.00 0.29
LII 0.61 0.29 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, AOS, FIX and LII?

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

Which stock is cheaper, AOS, FIX and LII?

Lennox International (LII) trades on the lowest price-to-earnings ratio (Smith A O (AOS) 17.0x, Comfort Systems Usa (FIX) 26.8x, Lennox International (LII) 16.1x). On next year's consensus earnings, Lennox International (LII) is cheapest (Smith A O (AOS) 17.0x, Comfort Systems Usa (FIX) 25.4x, Lennox International (LII) 16.6x). 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: Smith A O (AOS) +0.4%, Comfort Systems Usa (FIX) -36.6%, Lennox International (LII) -2.1%.

Which company is more profitable?

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

Which stock has performed better?

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

Which pays a higher dividend?

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

Which stock is riskier?

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

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

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.