FIX vs. TDG: Comfort Systems USA vs. TransDigm Stock Comparison

November 11, 2026

How do Comfort Systems USA (FIX) and TransDigm (TDG) 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 TransDigm (TDG) both fall under the Capital Goods industry group, but FIX is classified in Construction & Engineering while TDG is classified in Aerospace & Defense.

Company profile comparison for Comfort Systems USA (FIX) and TransDigm (TDG)
Profile Item	FIX	TDG
Name	Comfort Systems USA Inc.	TransDigm Group Inc.
Country/Region	United States	United States
GICS Sector	Industrials	Industrials
GICS Industry Group	Capital Goods	Capital Goods
GICS Industry	Construction & Engineering	Aerospace & Defense
GICS Sub-Industry	Construction & Engineering	Aerospace & Defense
Market Capitalization	35.81 billion USD	66.17 billion USD
Currency	USD	USD
Exchange	NYSE	NYSE
Listing Date	June 27, 1997	March 15, 2006
Security Type	Common Stock	Common Stock

Price Performance

Cumulative Growth

FIX

TDG

GSPC

Comfort Systems USA (FIX) vs. TransDigm (TDG), 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 TransDigm (TDG). Returns over one year are annualized.

Calendar-Year Returns

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Calendar-year total returns for Comfort Systems USA (FIX) and TransDigm (TDG). 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 TransDigm (TDG)
Metric	FIX	TDG
Total Return (1Y)	15.31%	-3.42%
Total Return (3Y, Annualized)	81.62%	14.26%
Total Return (5Y, Annualized)	62.48%	16.86%

Risk Profile

Drawdown History

FIX

TDG

GSPC

Comfort Systems USA (FIX) vs. TransDigm (TDG), 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 TransDigm (TDG). 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 TransDigm (TDG)
Metric	FIX	TDG
Volatility (1Y, Annualized)	60.97%	28.03%
Beta (5Y)	1.68	0.94
Max Drawdown (5Y)	-53.28%	-29.05%
Avg. Volume (3M)	471.64K	369.72K

Risk-Adjusted Performance

Risk-Return Positioning

FIX and TDG 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 TransDigm (TDG)
Metric	FIX	TDG
Sharpe Ratio (1Y)	0.18	-0.27
Sortino Ratio (1Y)	0.25	-0.38

Profitability

ROE (TTM)

Capital efficiency shows on one side only: Comfort Systems USA (FIX) earns 58.61% on shareholders’ equity, ranked against its industry; TransDigm (TDG) has no ROE this period.

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%

TDG

Capital Goods industry group

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

Comfort Systems USA (FIX) vs. TransDigm (TDG): TDG does not report ROE, so it has no value marker; FIX is benchmarked against the Capital Goods industry group.

Net Margin (TTM)

For every dollar of sales, both Comfort Systems USA (FIX) at 13.01% and TransDigm (TDG) at 21.28% retain more as net profit than most peers, landing in the top net margin quartile of their industries.

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%

TDG

Capital Goods industry group

21.28%

Max: 27.47%
TDG: 21.28%
Q3: 12.10%
Median: 6.30%
Q1: 1.40%
Min: -12.89%

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

Operating Margin (TTM)

TransDigm (TDG) at 46.01% turns sales into operating profit above its industry’s benchmark range, while Comfort Systems USA (FIX) at 16.47% operates around its industry’s norm.

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%

TDG

Capital Goods industry group

46.01%

TDG: 46.01%
Max: 36.60%
Q3: 18.33%
Median: 11.12%
Q1: 5.14%
Min: -12.63%

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

Profitability Metrics

Profitability metrics for Comfort Systems USA (FIX) and TransDigm (TDG)
Metric	FIX	TDG
ROE (TTM)	58.61%	--
ROA (TTM)	16.88%	11.82%
Net Margin (TTM)	13.01%	21.28%
Operating Margin (TTM)	16.47%	46.01%
Gross Margin (TTM)	25.70%	59.82%

Growth

Revenue Growth

Comfort Systems USA (FIX) at 29.52% sits in the top revenue growth quartile, while TransDigm (TDG) at 11.22% is closer to the peer norm — faster top-line expansion for FIX.

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

EPS Growth

Comfort Systems USA (FIX) at 97.81% sits in the top EPS growth quartile, while TransDigm (TDG) at 25.21% is closer to the peer norm — faster per-share earnings growth for FIX.

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

Growth Metrics

Growth metrics for Comfort Systems USA (FIX) and TransDigm (TDG)
Metric	FIX	TDG
Revenue Growth (YoY)	29.52%	11.22%
Revenue Growth (3Y CAGR)	30.03%	17.61%
EPS Growth (YoY)	97.81%	25.21%
EPS Growth (3Y CAGR)	61.78%	33.78%

Financial Strength

Current Ratio (MRQ)

TransDigm (TDG) at 3.02 carries current ratio above its industry’s typical mid-range, while Comfort Systems USA (FIX) at 1.15 runs in the tighter-liquidity quartile — different working-capital profiles, both worth examining.

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

TDG

Capital Goods industry group

3.02

Max: 5.22
TDG: 3.02
Q3: 2.95
Median: 2.08
Q1: 1.43
Min: 0.36

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

Debt / Equity (MRQ)

Only one side’s leverage can be read here: Comfort Systems USA (FIX) carries debt-to-equity ratio of 0.11 against its industry range, while TransDigm (TDG) reports no figure this period.

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

TDG

Capital Goods industry group

Max: 2.33
Q3: 1.12
Median: 0.60
Q1: 0.29
Min: 0.00
TDG: --

Comfort Systems USA (FIX) vs. TransDigm (TDG): TDG does not report debt-to-equity ratio, so it has no value marker; FIX is benchmarked against the Capital Goods industry group.

Financial Strength Metrics

Financial strength metrics for Comfort Systems USA (FIX) and TransDigm (TDG)
Metric	FIX	TDG
Current Ratio (MRQ)	1.15	3.02
Debt / Equity (MRQ)	0.11	--
Net Debt / EBITDA	-0.81	6.03

Dividends

Dividend Yield (TTM)

TransDigm (TDG) 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%

TDG

Capital Goods industry group

0.00%

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

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

Dividend Payout Ratio (TTM)

TransDigm (TDG) 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%

TDG

Capital Goods industry group

0.00%

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

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

Dividend Metrics

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

Valuation

P/E Ratio (TTM)

Comfort Systems USA (FIX) at 21.98 is near its industry’s usual P/E ratio, while TransDigm (TDG) at 36.31 sits in the richer quartile — TDG needs stronger growth or earnings quality to justify the premium.

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

TDG

Capital Goods industry group

36.31

Max: 59.38
TDG: 36.31
Q3: 35.92
Median: 25.41
Q1: 19.47
Min: 3.03

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

P/S Ratio (TTM)

Comfort Systems USA (FIX) at 2.85 is priced about in line with its industry on P/S ratio, while TransDigm (TDG) at 6.61 sits in the pricier quartile — TDG costs more per dollar of sales.

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

TDG

Capital Goods industry group

6.61

Max: 7.54
TDG: 6.61
Q3: 3.76
Median: 2.15
Q1: 1.03
Min: 0.03

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

P/B Ratio (MRQ)

TransDigm (TDG) reports a negative P/B ratio of -6.74, meaning negative book equity — the multiple itself is not meaningful for valuation. Meanwhile Comfort Systems USA (FIX) reports 10.66, ranking against industry peers normally.

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

TDG

Capital Goods industry group

-6.74

Max: 9.66
Q3: 5.00
Median: 3.12
Q1: 1.81
Min: -1.08
TDG: -6.74

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

Valuation Metrics

Valuation metrics for Comfort Systems USA (FIX) and TransDigm (TDG)
Metric	FIX	TDG
P/E Ratio (TTM)	21.98	36.31
P/S Ratio (TTM)	2.85	6.61
P/B Ratio (MRQ)	10.66	-6.74
Free Cash Flow Yield (TTM)	5.94%	2.20%