AOS vs FIX vs NPK Stock Comparison

Smith A O, Comfort Systems Usa and National Presto Industries Prices as of Oct 29, 2026 Peers: Industry group
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AOS Smith A O Corp
$63.51 +9.4% 1M -3.2% 1Y
Market cap
$8.53B
P/E
17.4x
Revenue (TTM)
$3.80B
Div. yield
2.27%
HVAC Industrials
5 wins
FIX Comfort Systems Usa Inc
$1,326.09 -20.3% 1M +31.2% 1Y
Market cap
$46.41B
P/E
28.5x
Revenue (TTM)
$5.27B
Div. yield
0.23%
HVAC Industrials
5 wins

Head to Head

12 decided of 12

Comfort Systems Usa leads on 5 of the 12 questions below (Comfort Systems Usa 5, Smith A O 5, National Presto Industries 2). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionAOSFIXNPKLeader
Larger companyMarket capitalisation $8.53B $46.41B $1.08B FIX
Cheaper on earningsLower P/E, profitable companies only 17.4x 28.5x 25.4x AOS
Cheaper on forward earningsLower price / next fiscal year consensus EPS 17.6x 29.0x 31.1x AOS
Faster revenue growthRevenue growth, trailing twelve months -0.7% -36.6% +20.9% NPK
More profitableNet margin, trailing twelve months 13.0% 30.9% 7.9% FIX
Better return on capitalReturn on invested capital 20.8% 16.0% — AOS
Less leveragedLower net debt / EBITDA 0.6x -2.0x — FIX
Higher dividend yieldTrailing dividend yield 2.27% 0.23% 0.66% AOS
Better 1-year returnPrice return, last 12 months -3.2% +31.2% +42.1% NPK
Better 5-year returnAnnualised price return, 5 years -2.8%/yr +70.8%/yr +12.8%/yr FIX
Less volatileAnnualised volatility, 1 year 27.6% 57.0% 35.0% AOS
Higher overall scoreMean of the five percentile scores vs peers 60/100 70/100 49/100 FIX

Percentile Scorecard

AOSFIXNPK

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

AxisAOSFIXNPK
Valuation 67 #19 of 55 33 #37 of 55 28 #30 of 41
Growth 32 #35 of 51 88 #7 of 51 63 #16 of 41
Profitability 90 #6 of 49 79 #11 of 49 68 #13 of 38
Financial Health 70 #17 of 55 76 #14 of 55 68 #14 of 42
Shareholder Returns 41 #24 of 40 74 #11 of 40 19 #22 of 27
Overall 60 70 49
  • AOS ranked among 59 companies in Construction Products
  • FIX ranked among 59 companies in Construction Products
  • NPK ranked among 44 companies in Household Durables

Price Performance

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

Returns

PeriodAOSFIXNPKSPY
1 month +9.4%-20.3%+3.6% +0.7%
3 months +6.2%-21.9%+25.0% +3.7%
6 months +2.7%-27.9%+8.7% +7.1%
Year to date -5.0%+42.1%+42.4% +12.8%
1 year -3.2%+31.2%+42.1% +11.9%
3 years -8.6%+638.8%+105.5% +85.2%
3 years, per year -3.0%+94.9%+27.2% +22.8%
5 years -13.1%+1,349.8%+82.8% +67.6%
5 years, per year -2.8%+70.8%+12.8% +10.9%
10 years +41.2%+4,512.5%+73.6% +262.0%
10 years, per year +3.5%+46.7%+5.7% +13.7%

Risk

MeasureAOSFIXNPKSPY
Volatility, 1Y 27.6%57.0%35.0% 12.7%
Downside volatility, 1Y 26.3%62.1%35.2% 12.6%
Beta vs S&P 500, 1Y 0.702.600.73 1.00
Return / volatility, 1Y -0.110.551.20 0.94
Max drawdown, 5Y -43.4%-46.1%-31.4% -25.4%
From 52-week high -21.1%-35.8%-3.1% -1.2%
52-week high $80.47$2,066.51$156.80 $779.14
52-week low $55.34$876.19$91.59 $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.

MultipleAOSFIXNPK
P/E now vs peer median 17.4xmedian 20.3x 28.5xmedian 20.3x 25.4xmedian 15.8x
P/S now vs peer median 2.2xmedian 1.6x 8.8xmedian 1.6x 2.0xmedian 0.7x
EV/EBITDA now vs peer median 11.8xmedian 12.6x 42.2xmedian 12.6x 17.9xmedian 9.6x
P/FCF now vs peer median 15.2xmedian 16.9x 19.0xmedian 16.9x 41.0xmedian 12.1x
P/B now vs peer median 4.7xmedian 3.0x 13.9xmedian 3.0x 2.6xmedian 1.2x
PEG now vs peer median 0.77median 1.13 0.36median 1.13 1.35median 0.63

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 monthsAOSFIXNPK
Revenue $3.80B $5.27B $544.68M
Gross profit $1.47B $1.42B $89.69M
Operating income $668.30M $989.51M $52.52M
Net income $494.60M $1.63B $42.81M
Free cash flow $561.70M $2.44B $26.43M
EPS (diluted) $3.63 $46.42 $6.20
Cash & equivalents $234.50M $2.16B $15.79M
Total debt $673.10M $49.56M –
Shares (diluted) 136.10M 35.15M 6.91M
Enterprise value $7.72B $40.36B $1.05B

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
MetricAOSFIXNPK
P/E 17.4x 28.5x 25.4x
P/FCF 15.2x 19.0x 41.0x
P/Operating cash flow 13.9x 15.4x 32.4x
P/S 2.2x 8.8x 2.0x
P/B 4.7x 13.9x 2.6x
P/Tangible book 6.9x 16.7x 2.6x
EV/EBITDA 11.8x 42.2x 17.9x
EV/EBIT 13.4x 44.8x 20.3x
EV/Revenue 2.4x 8.4x 2.0x
EV/FCF 16.0x 18.1x 40.4x
EV/Operating cash flow 14.6x 14.7x 31.9x
PEG (3Y EPS CAGR) 0.77 0.36 1.35

Growth

14 metrics
MetricAOSFIXNPK
Revenue growth (1Y) -0.7% -36.6% 20.9%
Revenue CAGR (3Y) 0.0% 2.0% 16.7%
Gross profit growth (1Y) -0.4% -27.6% 3.5%
Gross profit CAGR (3Y) 0.1% 15.4% 13.2%
Operating income growth (1Y) -7.2% -11.2% 10.0%
Operating income CAGR (3Y) -3.9% 37.8% 26.7%
Net income growth (1Y) -6.8% 94.8% 3.0%
Net income CAGR (3Y) 18.2% 78.4% 18.9%
EPS growth (1Y) -3.5% 96.0% 3.0%
EPS CAGR (3Y) 22.5% 79.7% 18.9%
Operating cash flow growth (1Y) -6.6% 223.9% 242.1%
Operating cash flow CAGR (3Y) -0.2% 71.3% -8.6%
Free cash flow growth (1Y) -1.8% 205.6% 147.6%
Free cash flow CAGR (3Y) 0.5% 67.9% -14.5%

Profitability

14 metrics
MetricAOSFIXNPK
Gross margin 38.6% 26.8% 16.5%
EBITDA margin 20.1% 19.9% 10.9%
Operating margin 17.6% 18.8% 9.6%
Pretax margin 16.8% 19.3% 10.0%
Net margin 13.0% 30.9% 7.9%
FCF margin 14.8% 46.3% 4.9%
Operating cash flow margin 16.1% 57.0% 6.1%
Return on equity 27.0% 16.7% 10.6%
Return on assets 13.6% 6.0% 8.8%
Return on invested capital 20.8% 16.0% –
Return on capital employed 24.0% 30.6% 12.9%
Asset turnover 1.0x 0.6x 1.1x
Cash conversion (OCF / net income) 1.2x 1.8x 0.8x
Stock comp / revenue 0.4% 0.7% –

Financial Health

11 metrics
MetricAOSFIXNPK
Debt / assets 18.4% 0.5% –
Debt / equity 0.4x 0.0x –
Net debt / EBITDA 0.6x -2.0x –
Debt / FCF 1.2x 0.0x –
Liabilities / assets 50.1% 66.0% 17.5%
Equity / assets 49.9% 34.0% 82.5%
Interest coverage 26.4x 125.1x –
Current ratio 1.6x 1.1x 5.2x
Quick ratio 1.0x 0.4x 0.2x
Cash ratio 0.3x 0.4x 0.2x
Altman Z-score 6.22 5.82 10.78

Shareholder Returns

7 metrics
MetricAOSFIXNPK
Dividend yield 2.3% 0.2% 0.7%
Net buyback yield 3.8% 0.9% 0.0%
Shareholder yield 6.1% 1.2% 0.6%
Payout ratio (earnings) 40.3% 6.5% 16.7%
Payout ratio (FCF) 35.5% 4.3% 27.1%
Dividend growth (1Y) 2.4% 75.6% 0.3%
Dividend CAGR (3Y) 3.1% 57.9% -36.8%

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.

ConsensusAOSFIXNPK
Forward P/E 17.6xFY2026 29.0xFY2026 31.1xFY2028
EPS, next fiscal year $3.60FY2026 $45.66FY2026 $4.88FY2028
EPS growth, next FY -6.5%FY2026 +58.1%FY2026 –
EPS growth, the year after +15.0% +25.2% –
Revenue, next fiscal year $3.73BFY2026 $12.26BFY2026 $425.62MFY2028
Revenue growth, next FY -2.6%FY2026 +34.7%FY2026 –
Revenue growth, the year after +3.9% +33.8% –

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersAOSFIXNPK
Held by institutions 91.9% 93.1% 61.0%
Institutions holding 615 1,354 182
Change in shares held, QoQ +7.1% +0.8% +6.2%
Institutions buying 316 742 92
Institutions selling 226 487 40
Buyers to sellers 1.40 1.52 2.30

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.

AOSFIXNPK
AOS 1.00 0.10 0.19
FIX 0.10 1.00 0.15
NPK 0.19 0.15 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, AOS, FIX and NPK?

Comfort Systems Usa (FIX) is the largest by market capitalisation: Smith A O (AOS) $8.53B, Comfort Systems Usa (FIX) $46.41B, National Presto Industries (NPK) $1.08B.

Which stock is cheaper, AOS, FIX and NPK?

Smith A O (AOS) trades on the lowest price-to-earnings ratio (Smith A O (AOS) 17.4x, Comfort Systems Usa (FIX) 28.5x, National Presto Industries (NPK) 25.4x). On next year's consensus earnings, Smith A O (AOS) is cheapest (Smith A O (AOS) 17.6x, Comfort Systems Usa (FIX) 29.0x, National Presto Industries (NPK) 31.1x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

National Presto Industries (NPK) grew revenue fastest over the trailing twelve months: Smith A O (AOS) -0.7%, Comfort Systems Usa (FIX) -36.6%, National Presto Industries (NPK) +20.9%.

Which company is more profitable?

Comfort Systems Usa (FIX) has the highest net margin (Smith A O (AOS) 13.0%, Comfort Systems Usa (FIX) 30.9%, National Presto Industries (NPK) 7.9%). On return on invested capital, Smith A O (AOS) leads (Smith A O (AOS) 20.8%, Comfort Systems Usa (FIX) 16.0%).

Which stock has performed better?

Over the past year National Presto Industries (NPK) returned the most: Smith A O (AOS) -3.2%, Comfort Systems Usa (FIX) +31.2%, National Presto Industries (NPK) +42.1%. Over five years, Comfort Systems Usa (FIX) compounded fastest (Smith A O (AOS) -2.8%/yr, Comfort Systems Usa (FIX) +70.8%/yr, National Presto Industries (NPK) +12.8%/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) 2.27%, Comfort Systems Usa (FIX) 0.23%, National Presto Industries (NPK) 0.66%.

Which stock is riskier?

By one-year price volatility, Smith A O (AOS) has been the steadiest (Smith A O (AOS) 27.6%, Comfort Systems Usa (FIX) 57.0%, National Presto Industries (NPK) 35.0%). Volatility measures how widely the price swings, not the risk of the business.

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

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 5. 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.