FIX vs. MTZ: Comfort Systems USA vs. MasTec Stock Comparison

November 11, 2026

How do Comfort Systems USA (FIX) and MasTec (MTZ) stack up? This page sets them side by side across company profile, performance and risk, profitability, growth, financial strength, dividends, and valuation, with selected fundamentals also measured against each stock's industry-group peers.

Company Profile

Comfort Systems USA (FIX) and MasTec (MTZ) are both classified in the Construction & Engineering sub-industry within the broader Construction & Engineering industry, placing them in the closest GICS peer bucket.

Company profile comparison for Comfort Systems USA (FIX) and MasTec (MTZ)
Profile Item	FIX	MTZ
Name	Comfort Systems USA Inc.	MasTec, Inc.
Country/Region	United States	United States
GICS Sector	Industrials	Industrials
GICS Industry Group	Capital Goods	Capital Goods
GICS Industry	Construction & Engineering	Construction & Engineering
GICS Sub-Industry	Construction & Engineering	Construction & Engineering
Market Capitalization	35.81 billion USD	13.98 billion USD
Currency	USD	USD
Exchange	NYSE	NYSE
Listing Date	June 27, 1997	February 21, 1973
Security Type	Common Stock	Common Stock

Price Performance

Cumulative Growth

FIX

MTZ

GSPC

Comfort Systems USA (FIX) vs. MasTec (MTZ), with S&P 500 (GSPC) for reference: Growth of a $10,000 investment over the past five years. Adjusted for dividends and splits.

Trailing Returns

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Trailing total returns for Comfort Systems USA (FIX) and MasTec (MTZ). Returns over one year are annualized.

Calendar-Year Returns

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Calendar-year total returns for Comfort Systems USA (FIX) and MasTec (MTZ). Each bar is that year's total return, measured year-end to year-end.

Performance Metrics

Price performance metrics for Comfort Systems USA (FIX) and MasTec (MTZ)
Metric	FIX	MTZ
Total Return (1Y)	15.31%	-7.45%
Total Return (3Y, Annualized)	81.62%	57.37%
Total Return (5Y, Annualized)	62.48%	13.96%

Risk Profile

Drawdown History

FIX

MTZ

GSPC

Comfort Systems USA (FIX) vs. MasTec (MTZ), with S&P 500 (GSPC) for reference: Drawdown from the running peak over the past five years. Each line shows the decline from its prior peak; 0% marks a new high.

Return Distribution

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Distribution of monthly total returns for Comfort Systems USA (FIX) and MasTec (MTZ). Each bar is the share of months whose return fell in that 5% bucket.

Risk Metrics

Risk profile metrics for Comfort Systems USA (FIX) and MasTec (MTZ)
Metric	FIX	MTZ
Volatility (1Y, Annualized)	60.97%	55.99%
Beta (5Y)	1.68	1.91
Max Drawdown (5Y)	-53.28%	-63.67%
Avg. Volume (3M)	471.64K	1.63M

Risk-Adjusted Performance

Risk-Return Positioning

FIX and MTZ are plotted by 1-year volatility (risk) and 1-year return. The dashed Capital Allocation Line runs from the risk-free rate through the shared industry median.

Risk-Adjusted Metrics

Risk-adjusted metrics for Comfort Systems USA (FIX) and MasTec (MTZ)
Metric	FIX	MTZ
Sharpe Ratio (1Y)	0.18	-0.21
Sortino Ratio (1Y)	0.25	-0.28

Profitability

ROE (TTM)

Comfort Systems USA (FIX) at 58.61% clears its industry range for ROE, a sharper capital-efficiency signal than MasTec (MTZ) at 14.53%, which is closer to a typical peer reading.

FIX

Capital Goods industry group

58.61%

FIX: 58.61%
Max: 40.55%
Q3: 19.29%
Median: 12.12%
Q1: 4.08%
Min: -17.12%

MTZ

Capital Goods industry group

14.53%

Max: 40.55%
Q3: 19.29%
MTZ: 14.53%
Median: 12.12%
Q1: 4.08%
Min: -17.12%

Comfort Systems USA (FIX) vs. MasTec (MTZ): A comparison of their ROE against the Capital Goods industry group benchmark.

Net Margin (TTM)

Comfort Systems USA (FIX) at 13.01% retains a top-quartile share of revenue as profit, ahead of MasTec (MTZ) at 2.80%, which keeps about the industry-typical share.

FIX

Capital Goods industry group

13.01%

Max: 27.47%
FIX: 13.01%
Q3: 12.10%
Median: 6.30%
Q1: 1.40%
Min: -12.89%

MTZ

Capital Goods industry group

2.80%

Max: 27.47%
Q3: 12.10%
Median: 6.30%
MTZ: 2.80%
Q1: 1.40%
Min: -12.89%

Comfort Systems USA (FIX) vs. MasTec (MTZ): A comparison of their net margin against the Capital Goods industry group benchmark.

Operating Margin (TTM)

Both Comfort Systems USA (FIX) at 16.47% and MasTec (MTZ) at 5.64% run core operations about as efficiently as their industries’ norm — neither stands out on operating profitability.

FIX

Capital Goods industry group

16.47%

Max: 36.60%
Q3: 18.33%
FIX: 16.47%
Median: 11.12%
Q1: 5.14%
Min: -12.63%

MTZ

Capital Goods industry group

5.64%

Max: 36.60%
Q3: 18.33%
Median: 11.12%
MTZ: 5.64%
Q1: 5.14%
Min: -12.63%

Comfort Systems USA (FIX) vs. MasTec (MTZ): A comparison of their operating margin against the Capital Goods industry group benchmark.

Profitability Metrics

Profitability metrics for Comfort Systems USA (FIX) and MasTec (MTZ)
Metric	FIX	MTZ
ROE (TTM)	58.61%	14.53%
ROA (TTM)	16.88%	4.43%
Net Margin (TTM)	13.01%	2.80%
Operating Margin (TTM)	16.47%	5.64%
Gross Margin (TTM)	25.70%	12.74%

Growth

Revenue Growth

Comfort Systems USA (FIX) at 29.52% sits in the top revenue growth quartile, while MasTec (MTZ) at 16.22% is closer to the peer norm — faster top-line expansion for FIX.

Comfort Systems USA (FIX) vs. MasTec (MTZ): A comparison of their Revenue Growth across different time periods.

EPS Growth

Both companies show strong earnings momentum, but MasTec (MTZ) at 146.12% is the standout with EPS growth above its industry range; Comfort Systems USA (FIX) at 97.81% also sits in the top quartile.

Comfort Systems USA (FIX) vs. MasTec (MTZ): A comparison of their EPS Growth across different time periods.

Growth Metrics

Growth metrics for Comfort Systems USA (FIX) and MasTec (MTZ)
Metric	FIX	MTZ
Revenue Growth (YoY)	29.52%	16.22%
Revenue Growth (3Y CAGR)	30.03%	13.51%
EPS Growth (YoY)	97.81%	146.12%
EPS Growth (3Y CAGR)	61.78%	129.40%

Financial Strength

Current Ratio (MRQ)

Both Comfort Systems USA (FIX) at 1.15 and MasTec (MTZ) at 1.39 run current ratio in the tighter-liquidity quartile of industry peers, leaving thinner cushions against current liabilities than typical competitors.

FIX

Capital Goods industry group

1.15

Max: 5.22
Q3: 2.95
Median: 2.08
Q1: 1.43
FIX: 1.15
Min: 0.36

MTZ

Capital Goods industry group

1.39

Max: 5.22
Q3: 2.95
Median: 2.08
Q1: 1.43
MTZ: 1.39
Min: 0.36

Comfort Systems USA (FIX) vs. MasTec (MTZ): A comparison of their current ratio against the Capital Goods industry group benchmark.

Debt / Equity (MRQ)

Comfort Systems USA (FIX) at 0.11 keeps leverage in the lower quartile, while MasTec (MTZ) at 1.12 sits in the higher-leverage quartile.

FIX

Capital Goods industry group

0.11

Max: 2.33
Q3: 1.12
Median: 0.60
Q1: 0.29
FIX: 0.11
Min: 0.00

MTZ

Capital Goods industry group

1.12

Max: 2.33
MTZ: 1.12
Q3: 1.12
Median: 0.60
Q1: 0.29
Min: 0.00

Comfort Systems USA (FIX) vs. MasTec (MTZ): A comparison of their debt-to-equity ratio against the Capital Goods industry group benchmark.

Financial Strength Metrics

Financial strength metrics for Comfort Systems USA (FIX) and MasTec (MTZ)
Metric	FIX	MTZ
Current Ratio (MRQ)	1.15	1.39
Debt / Equity (MRQ)	0.11	1.12
Net Debt / EBITDA	-0.81	3.08

Dividends

Dividend Yield (TTM)

MasTec (MTZ) pays no dividend (yield 0.00%) — it may be reinvesting, using buybacks, or simply not returning cash through dividends. Meanwhile Comfort Systems USA (FIX) reports a yield of 0.31%, ranking against industry peers normally.

FIX

Capital Goods industry group

0.31%

Max: 2.66%
Q3: 1.14%
FIX: 0.31%
Median: 0.24%
Q1: 0.00%
Min: 0.00%

MTZ

Capital Goods industry group

0.00%

Max: 2.66%
Q3: 1.14%
Median: 0.24%
MTZ: 0.00%
Q1: 0.00%
Min: 0.00%

Comfort Systems USA (FIX) vs. MasTec (MTZ): A comparison of their dividend yield against the Capital Goods industry group benchmark.

Dividend Payout Ratio (TTM)

MasTec (MTZ) pays no dividend (payout 0.00%) — it may be reinvesting, using buybacks, or simply not returning cash through dividends. Meanwhile Comfort Systems USA (FIX) reports a payout of 6.48%, ranking against industry peers normally.

FIX

Capital Goods industry group

6.48%

Max: 67.39%
Q3: 28.02%
Median: 6.86%
FIX: 6.48%
Q1: 0.00%
Min: 0.00%

MTZ

Capital Goods industry group

0.00%

Max: 67.39%
Q3: 28.02%
Median: 6.86%
MTZ: 0.00%
Q1: 0.00%
Min: 0.00%

Comfort Systems USA (FIX) vs. MasTec (MTZ): A comparison of their payout ratio against the Capital Goods industry group benchmark.

Dividend Metrics

Dividend metrics for Comfort Systems USA (FIX) and MasTec (MTZ)
Metric	FIX	MTZ
Dividend Yield (TTM)	0.31%	0.00%
Dividend Payout Ratio (TTM)	6.48%	0.00%

Valuation

P/E Ratio (TTM)

Both Comfort Systems USA (FIX) at 21.98 and MasTec (MTZ) at 28.40 land around their industries’ usual P/E ratio levels — neither is getting a clear earnings-multiple discount or premium versus peers.

FIX

Capital Goods industry group

21.98

Max: 59.38
Q3: 35.92
Median: 25.41
FIX: 21.98
Q1: 19.47
Min: 3.03

MTZ

Capital Goods industry group

28.40

Max: 59.38
Q3: 35.92
MTZ: 28.40
Median: 25.41
Q1: 19.47
Min: 3.03

Comfort Systems USA (FIX) vs. MasTec (MTZ): A comparison of their P/E ratio against the Capital Goods industry group benchmark.

P/S Ratio (TTM)

MasTec (MTZ) at 0.81 sits in the cheaper P/S ratio quartile while Comfort Systems USA (FIX) at 2.85 prices around its industry’s middle — MTZ costs less per dollar of sales, though read it alongside growth and margins.

FIX

Capital Goods industry group

2.85

Max: 7.54
Q3: 3.76
FIX: 2.85
Median: 2.15
Q1: 1.03
Min: 0.03

MTZ

Capital Goods industry group

0.81

Max: 7.54
Q3: 3.76
Median: 2.15
Q1: 1.03
MTZ: 0.81
Min: 0.03

Comfort Systems USA (FIX) vs. MasTec (MTZ): A comparison of their P/S ratio against the Capital Goods industry group benchmark.

P/B Ratio (MRQ)

MasTec (MTZ) at 3.35 sits near its industry’s typical P/B ratio, while Comfort Systems USA (FIX) at 10.66 prices above its benchmark range — FIX looks rich relative to book.

FIX

Capital Goods industry group

10.66

FIX: 10.66
Max: 9.66
Q3: 5.00
Median: 3.12
Q1: 1.81
Min: -1.08

MTZ

Capital Goods industry group

3.35

Max: 9.66
Q3: 5.00
MTZ: 3.35
Median: 3.12
Q1: 1.81
Min: -1.08

Comfort Systems USA (FIX) vs. MasTec (MTZ): A comparison of their P/B ratio against the Capital Goods industry group benchmark.

Valuation Metrics

Valuation metrics for Comfort Systems USA (FIX) and MasTec (MTZ)
Metric	FIX	MTZ
P/E Ratio (TTM)	21.98	28.40
P/S Ratio (TTM)	2.85	0.81
P/B Ratio (MRQ)	10.66	3.35
Free Cash Flow Yield (TTM)	5.94%	1.00%