TDG vs. WSO.B: TransDigm vs. Watsco Stock Comparison

November 11, 2026

How do TransDigm (TDG) and Watsco (WSO.B) 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

TransDigm (TDG) and Watsco (WSO.B) both fall under the Capital Goods industry group, but TDG is classified in Aerospace & Defense while WSO.B is classified in Trading Companies & Distributors.

Company profile comparison for TransDigm (TDG) and Watsco (WSO.B)
Profile Item	TDG	WSO.B
Name	TransDigm Group Inc.	Watsco Inc. Class B Common Stock
Country/Region	United States	United States
GICS Sector	Industrials	Industrials
GICS Industry Group	Capital Goods	Capital Goods
GICS Industry	Aerospace & Defense	Trading Companies & Distributors
GICS Sub-Industry	Aerospace & Defense	Trading Companies & Distributors
Market Capitalization	66.17 billion USD	12.92 billion USD
Currency	USD	USD
Exchange	NYSE	NYSE
Listing Date	March 15, 2006	March 17, 1980
Security Type	Common Stock	Common Stock

Price Performance

Cumulative Growth

TDG

WSO.B

GSPC

TransDigm (TDG) vs. Watsco (WSO.B), 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 TransDigm (TDG) and Watsco (WSO.B). Returns over one year are annualized.

Calendar-Year Returns

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Calendar-year total returns for TransDigm (TDG) and Watsco (WSO.B). Each bar is that year's total return, measured year-end to year-end.

Performance Metrics

Price performance metrics for TransDigm (TDG) and Watsco (WSO.B)
Metric	TDG	WSO.B
Total Return (1Y)	-3.42%	-11.21%
Total Return (3Y, Annualized)	14.26%	-3.05%
Total Return (5Y, Annualized)	16.86%	4.30%

Risk Profile

Drawdown History

TDG

WSO.B

GSPC

TransDigm (TDG) vs. Watsco (WSO.B), 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 TransDigm (TDG) and Watsco (WSO.B). Each bar is the share of months whose return fell in that 5% bucket.

Risk Metrics

Risk profile metrics for TransDigm (TDG) and Watsco (WSO.B)
Metric	TDG	WSO.B
Volatility (1Y, Annualized)	28.03%	40.28%
Beta (5Y)	0.94	0.64
Max Drawdown (5Y)	-29.05%	-43.41%
Avg. Volume (3M)	369.72K	74

Risk-Adjusted Performance

Risk-Return Positioning

TDG and WSO.B 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 TransDigm (TDG) and Watsco (WSO.B)
Metric	TDG	WSO.B
Sharpe Ratio (1Y)	-0.27	-0.38
Sortino Ratio (1Y)	-0.38	-0.57

Profitability

ROE (TTM)

Capital efficiency shows on one side only: Watsco (WSO.B) earns 16.21% on shareholders’ equity, ranked against its industry; TransDigm (TDG) has no ROE this period.

TDG

Capital Goods industry group

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

WSO.B

Capital Goods industry group

16.21%

Max: 40.55%
Q3: 19.29%
WSO.B: 16.21%
Median: 12.12%
Q1: 4.08%
Min: -17.12%

TransDigm (TDG) vs. Watsco (WSO.B): TDG does not report ROE, so it has no value marker; WSO.B is benchmarked against the Capital Goods industry group.

Net Margin (TTM)

TransDigm (TDG) at 21.28% retains a top-quartile share of revenue as profit, ahead of Watsco (WSO.B) at 6.31%, which keeps about the industry-typical share.

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%

WSO.B

Capital Goods industry group

6.31%

Max: 27.47%
Q3: 12.10%
WSO.B: 6.31%
Median: 6.30%
Q1: 1.40%
Min: -12.89%

TransDigm (TDG) vs. Watsco (WSO.B): 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 Watsco (WSO.B) at 10.14% operates around its industry’s norm.

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%

WSO.B

Capital Goods industry group

10.14%

Max: 36.60%
Q3: 18.33%
Median: 11.12%
WSO.B: 10.14%
Q1: 5.14%
Min: -12.63%

TransDigm (TDG) vs. Watsco (WSO.B): A comparison of their operating margin against the Capital Goods industry group benchmark.

Profitability Metrics

Profitability metrics for TransDigm (TDG) and Watsco (WSO.B)
Metric	TDG	WSO.B
ROE (TTM)	--	16.21%
ROA (TTM)	11.82%	8.27%
Net Margin (TTM)	21.28%	6.31%
Operating Margin (TTM)	46.01%	10.14%
Gross Margin (TTM)	59.82%	27.18%

Growth

Revenue Growth

TransDigm (TDG) at 11.22% is around its peer norm for revenue growth, while Watsco (WSO.B) at -4.98% drops into the bottom quartile, signaling weaker demand or pricing momentum.

TransDigm (TDG) vs. Watsco (WSO.B): A comparison of their Revenue Growth across different time periods.

EPS Growth

Both TransDigm (TDG) at 25.21% and Watsco (WSO.B) at -7.47% land near their industries' usual EPS growth ranges, so bottom-line momentum looks broadly in line with peers on both sides.

TransDigm (TDG) vs. Watsco (WSO.B): A comparison of their EPS Growth across different time periods.

Growth Metrics

Growth metrics for TransDigm (TDG) and Watsco (WSO.B)
Metric	TDG	WSO.B
Revenue Growth (YoY)	11.22%	-4.98%
Revenue Growth (3Y CAGR)	17.61%	-0.16%
EPS Growth (YoY)	25.21%	-7.47%
EPS Growth (3Y CAGR)	33.78%	-6.89%

Financial Strength

Current Ratio (MRQ)

Both TransDigm (TDG) at 3.02 and Watsco (WSO.B) at 3.15 post current ratio above their industries’ typical mid-ranges — short-term liquidity appears comfortable, though unusually high readings can point to idle current assets.

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

WSO.B

Capital Goods industry group

3.15

Max: 5.22
WSO.B: 3.15
Q3: 2.95
Median: 2.08
Q1: 1.43
Min: 0.36

TransDigm (TDG) vs. Watsco (WSO.B): 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: Watsco (WSO.B) carries debt-to-equity ratio of 0.16 against its industry range, while TransDigm (TDG) reports no figure this period.

TDG

Capital Goods industry group

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

WSO.B

Capital Goods industry group

0.16

Max: 2.33
Q3: 1.12
Median: 0.60
Q1: 0.29
WSO.B: 0.16
Min: 0.00

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

Financial Strength Metrics

Financial strength metrics for TransDigm (TDG) and Watsco (WSO.B)
Metric	TDG	WSO.B
Current Ratio (MRQ)	3.02	3.15
Debt / Equity (MRQ)	--	0.16
Net Debt / EBITDA	6.03	-0.14

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 Watsco (WSO.B) reports a yield of 4.02%, ranking against industry peers normally.

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%

WSO.B

Capital Goods industry group

4.02%

WSO.B: 4.02%
Max: 2.66%
Q3: 1.14%
Median: 0.24%
Q1: 0.00%
Min: 0.00%

TransDigm (TDG) vs. Watsco (WSO.B): A comparison of their dividend yield against the Capital Goods industry group benchmark.

Dividend Payout Ratio (TTM)

Watsco (WSO.B) reports payout ratio above 100% at 109.66%, meaning dividends exceeded current-period earnings; TransDigm (TDG) pays no dividend (payout 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%

WSO.B

Capital Goods industry group

109.66%

WSO.B: 109.66%
Max: 67.39%
Q3: 28.02%
Median: 6.86%
Q1: 0.00%
Min: 0.00%

TransDigm (TDG) vs. Watsco (WSO.B): A comparison of their payout ratio against the Capital Goods industry group benchmark.

Dividend Metrics

Dividend metrics for TransDigm (TDG) and Watsco (WSO.B)
Metric	TDG	WSO.B
Dividend Yield (TTM)	0.00%	4.02%
Dividend Payout Ratio (TTM)	0.00%	109.66%

Valuation

P/E Ratio (TTM)

Watsco (WSO.B) at 27.26 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.

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

WSO.B

Capital Goods industry group

27.26

Max: 59.38
Q3: 35.92
WSO.B: 27.26
Median: 25.41
Q1: 19.47
Min: 3.03

TransDigm (TDG) vs. Watsco (WSO.B): A comparison of their P/E ratio against the Capital Goods industry group benchmark.

P/S Ratio (TTM)

Watsco (WSO.B) at 1.74 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.

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

WSO.B

Capital Goods industry group

1.74

Max: 7.54
Q3: 3.76
Median: 2.15
WSO.B: 1.74
Q1: 1.03
Min: 0.03

TransDigm (TDG) vs. Watsco (WSO.B): 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 Watsco (WSO.B) reports 3.99, ranking against industry peers normally.

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

WSO.B

Capital Goods industry group

3.99

Max: 9.66
Q3: 5.00
WSO.B: 3.99
Median: 3.12
Q1: 1.81
Min: -1.08

TransDigm (TDG) vs. Watsco (WSO.B): A comparison of their P/B ratio against the Capital Goods industry group benchmark.

Valuation Metrics

Valuation metrics for TransDigm (TDG) and Watsco (WSO.B)
Metric	TDG	WSO.B
P/E Ratio (TTM)	36.31	27.26
P/S Ratio (TTM)	6.61	1.74
P/B Ratio (MRQ)	-6.74	3.99
Free Cash Flow Yield (TTM)	2.20%	3.50%