ROK vs. TDG: Rockwell Automation vs. TransDigm Stock Comparison

November 11, 2026

How do Rockwell Automation (ROK) 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

Rockwell Automation (ROK) and TransDigm (TDG) both fall under the Capital Goods industry group, but ROK is classified in Electrical Equipment while TDG is classified in Aerospace & Defense.

Company profile comparison for Rockwell Automation (ROK) and TransDigm (TDG)
Profile Item	ROK	TDG
Name	Rockwell Automation Inc.	TransDigm Group Inc.
Country/Region	United States	United States
GICS Sector	Industrials	Industrials
GICS Industry Group	Capital Goods	Capital Goods
GICS Industry	Electrical Equipment	Aerospace & Defense
GICS Sub-Industry	Electrical Components & Equipment	Aerospace & Defense
Market Capitalization	41.82 billion USD	66.17 billion USD
Currency	USD	USD
Exchange	NYSE	NYSE
Listing Date	December 31, 1981	March 15, 2006
Security Type	Common Stock	Common Stock

Price Performance

Cumulative Growth

ROK

TDG

GSPC

Rockwell Automation (ROK) 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 Rockwell Automation (ROK) and TransDigm (TDG). Returns over one year are annualized.

Calendar-Year Returns

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Calendar-year total returns for Rockwell Automation (ROK) and TransDigm (TDG). Each bar is that year's total return, measured year-end to year-end.

Performance Metrics

Price performance metrics for Rockwell Automation (ROK) and TransDigm (TDG)
Metric	ROK	TDG
Total Return (1Y)	6.19%	-3.42%
Total Return (3Y, Annualized)	16.94%	14.26%
Total Return (5Y, Annualized)	4.86%	16.86%

Risk Profile

Drawdown History

ROK

TDG

GSPC

Rockwell Automation (ROK) 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 Rockwell Automation (ROK) and TransDigm (TDG). Each bar is the share of months whose return fell in that 5% bucket.

Risk Metrics

Risk profile metrics for Rockwell Automation (ROK) and TransDigm (TDG)
Metric	ROK	TDG
Volatility (1Y, Annualized)	34.28%	28.03%
Beta (5Y)	1.54	0.94
Max Drawdown (5Y)	-45.09%	-29.05%
Avg. Volume (3M)	799.28K	369.72K

Risk-Adjusted Performance

Risk-Return Positioning

ROK 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 Rockwell Automation (ROK) and TransDigm (TDG)
Metric	ROK	TDG
Sharpe Ratio (1Y)	0.06	-0.27
Sortino Ratio (1Y)	0.07	-0.38

Profitability

ROE (TTM)

Capital efficiency shows on one side only: Rockwell Automation (ROK) earns 38.73% on shareholders’ equity, ranked against its industry; TransDigm (TDG) has no ROE this period.

ROK

Capital Goods industry group

38.73%

Max: 40.55%
ROK: 38.73%
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: --

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

Net Margin (TTM)

For every dollar of sales, both Rockwell Automation (ROK) at 15.68% and TransDigm (TDG) at 21.28% retain more as net profit than most peers, landing in the top net margin quartile of their industries.

ROK

Capital Goods industry group

15.68%

Max: 27.47%
ROK: 15.68%
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%

Rockwell Automation (ROK) 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 Rockwell Automation (ROK) at 14.75% operates around its industry’s norm.

ROK

Capital Goods industry group

14.75%

Max: 36.60%
Q3: 18.33%
ROK: 14.75%
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%

Rockwell Automation (ROK) vs. TransDigm (TDG): A comparison of their operating margin against the Capital Goods industry group benchmark.

Profitability Metrics

Profitability metrics for Rockwell Automation (ROK) and TransDigm (TDG)
Metric	ROK	TDG
ROE (TTM)	38.73%	--
ROA (TTM)	9.32%	11.82%
Net Margin (TTM)	15.68%	21.28%
Operating Margin (TTM)	14.75%	46.01%
Gross Margin (TTM)	48.95%	59.82%

Growth

Revenue Growth

Only one side can be read here: TransDigm (TDG) reports revenue growth of 11.22%, ranked against its industry; Rockwell Automation (ROK) has no revenue growth figure this period.

Rockwell Automation (ROK) vs. TransDigm (TDG): A comparison of their Revenue Growth across different time periods.

EPS Growth

Rockwell Automation (ROK) at 63.49% 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 ROK.

Rockwell Automation (ROK) vs. TransDigm (TDG): A comparison of their EPS Growth across different time periods.

Growth Metrics

Growth metrics for Rockwell Automation (ROK) and TransDigm (TDG)
Metric	ROK	TDG
Revenue Growth (YoY)	--	11.22%
Revenue Growth (3Y CAGR)	--	17.61%
EPS Growth (YoY)	63.49%	25.21%
EPS Growth (3Y CAGR)	1.62%	33.78%

Financial Strength

Current Ratio (MRQ)

Rockwell Automation (ROK) at 2.11 keeps current ratio within its industry’s typical mid-range, while TransDigm (TDG) at 3.02 sits above its industry’s typical mid-range — comfortable liquidity, though possibly with more idle current assets relative to peers.

ROK

Capital Goods industry group

2.11

Max: 5.22
Q3: 2.95
ROK: 2.11
Median: 2.08
Q1: 1.43
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

Rockwell Automation (ROK) 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: Rockwell Automation (ROK) carries debt-to-equity ratio of 1.00 against its industry range, while TransDigm (TDG) reports no figure this period.

ROK

Capital Goods industry group

1.00

Max: 2.33
Q3: 1.12
ROK: 1.00
Median: 0.60
Q1: 0.29
Min: 0.00

TDG

Capital Goods industry group

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

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

Financial Strength Metrics

Financial strength metrics for Rockwell Automation (ROK) and TransDigm (TDG)
Metric	ROK	TDG
Current Ratio (MRQ)	2.11	3.02
Debt / Equity (MRQ)	1.00	--
Net Debt / EBITDA	1.58	6.03

Dividends

Dividend Yield (TTM)

Neither Rockwell Automation (ROK) nor TransDigm (TDG) pays a dividend this period — they may reinvest, use buybacks, or simply not return cash through dividends.

ROK

Capital Goods industry group

0.00%

Max: 2.66%
Q3: 1.14%
Median: 0.24%
ROK: 0.00%
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%

Rockwell Automation (ROK) 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 Rockwell Automation (ROK) reports a payout of 51.03%, ranking against industry peers normally.

ROK

Capital Goods industry group

51.03%

Max: 67.39%
ROK: 51.03%
Q3: 28.02%
Median: 6.86%
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%

Rockwell Automation (ROK) vs. TransDigm (TDG): A comparison of their payout ratio against the Capital Goods industry group benchmark.

Dividend Metrics

Dividend metrics for Rockwell Automation (ROK) and TransDigm (TDG)
Metric	ROK	TDG
Dividend Yield (TTM)	0.00%	0.00%
Dividend Payout Ratio (TTM)	51.03%	0.00%

Valuation

P/E Ratio (TTM)

Rockwell Automation (ROK) at 29.97 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.

ROK

Capital Goods industry group

29.97

Max: 59.38
Q3: 35.92
ROK: 29.97
Median: 25.41
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

Rockwell Automation (ROK) vs. TransDigm (TDG): A comparison of their P/E ratio against the Capital Goods industry group benchmark.

P/S Ratio (TTM)

Both Rockwell Automation (ROK) at 4.65 and TransDigm (TDG) at 6.61 command a richer price per dollar of sales than most peers, sitting in the upper P/S ratio quartile of their industries.

ROK

Capital Goods industry group

4.65

Max: 7.54
ROK: 4.65
Q3: 3.76
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

Rockwell Automation (ROK) 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 Rockwell Automation (ROK) reports 11.76, ranking against industry peers normally.

ROK

Capital Goods industry group

11.76

ROK: 11.76
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

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

Valuation Metrics

Valuation metrics for Rockwell Automation (ROK) and TransDigm (TDG)
Metric	ROK	TDG
P/E Ratio (TTM)	29.97	36.31
P/S Ratio (TTM)	4.65	6.61
P/B Ratio (MRQ)	11.76	-6.74
Free Cash Flow Yield (TTM)	-1.13%	2.20%