FAST vs. TDG: Fastenal vs. TransDigm Stock Comparison

November 11, 2026

How do Fastenal (FAST) 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

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

Company profile comparison for Fastenal (FAST) and TransDigm (TDG)
Profile Item	FAST	TDG
Name	Fastenal Co.	TransDigm Group Inc.
Country/Region	United States	United States
GICS Sector	Industrials	Industrials
GICS Industry Group	Capital Goods	Capital Goods
GICS Industry	Trading Companies & Distributors	Aerospace & Defense
GICS Sub-Industry	Trading Companies & Distributors	Aerospace & Defense
Market Capitalization	60.80 billion USD	66.17 billion USD
Currency	USD	USD
Exchange	Nasdaq	NYSE
Listing Date	August 20, 1987	March 15, 2006
Security Type	Common Stock	Common Stock

Price Performance

Cumulative Growth

FAST

TDG

GSPC

Fastenal (FAST) 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 Fastenal (FAST) and TransDigm (TDG). Returns over one year are annualized.

Calendar-Year Returns

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

Performance Metrics

Price performance metrics for Fastenal (FAST) and TransDigm (TDG)
Metric	FAST	TDG
Total Return (1Y)	36.82%	-3.42%
Total Return (3Y, Annualized)	25.71%	14.26%
Total Return (5Y, Annualized)	15.98%	16.86%

Risk Profile

Drawdown History

FAST

TDG

GSPC

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

Risk Metrics

Risk profile metrics for Fastenal (FAST) and TransDigm (TDG)
Metric	FAST	TDG
Volatility (1Y, Annualized)	24.55%	28.03%
Beta (5Y)	0.64	0.94
Max Drawdown (5Y)	-30.71%	-29.05%
Avg. Volume (3M)	7.21M	369.72K

Risk-Adjusted Performance

Risk-Return Positioning

FAST 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 Fastenal (FAST) and TransDigm (TDG)
Metric	FAST	TDG
Sharpe Ratio (1Y)	1.33	-0.27
Sortino Ratio (1Y)	2.00	-0.38

Profitability

ROE (TTM)

Capital efficiency shows on one side only: Fastenal (FAST) earns 35.26% on shareholders’ equity, ranked against its industry; TransDigm (TDG) has no ROE this period.

FAST

Capital Goods industry group

35.26%

Max: 40.55%
FAST: 35.26%
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: --

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

Net Margin (TTM)

For every dollar of sales, both Fastenal (FAST) at 15.62% and TransDigm (TDG) at 21.28% retain more as net profit than most peers, landing in the top net margin quartile of their industries.

FAST

Capital Goods industry group

15.62%

Max: 27.47%
FAST: 15.62%
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%

Fastenal (FAST) vs. TransDigm (TDG): A comparison of their net margin against the Capital Goods industry group benchmark.

Operating Margin (TTM)

TransDigm (TDG) at 46.01% shows unusually strong operating efficiency — above its industry’s operating margin range — and Fastenal (FAST) at 21.55% also operates in the top quartile.

FAST

Capital Goods industry group

21.55%

Max: 36.60%
FAST: 21.55%
Q3: 18.33%
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%

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

Profitability Metrics

Profitability metrics for Fastenal (FAST) and TransDigm (TDG)
Metric	FAST	TDG
ROE (TTM)	35.26%	--
ROA (TTM)	21.97%	11.82%
Net Margin (TTM)	15.62%	21.28%
Operating Margin (TTM)	21.55%	46.01%
Gross Margin (TTM)	44.61%	59.82%

Growth

Revenue Growth

Both Fastenal (FAST) at 8.67% and TransDigm (TDG) at 11.22% land near their industries' usual revenue growth ranges, so top-line momentum looks broadly in line with peers on both sides.

Fastenal (FAST) vs. TransDigm (TDG): A comparison of their Revenue Growth across different time periods.

EPS Growth

Both Fastenal (FAST) at 9.00% and TransDigm (TDG) at 25.21% land near their industries' usual EPS growth ranges, so bottom-line momentum looks broadly in line with peers on both sides.

Fastenal (FAST) vs. TransDigm (TDG): A comparison of their EPS Growth across different time periods.

Growth Metrics

Growth metrics for Fastenal (FAST) and TransDigm (TDG)
Metric	FAST	TDG
Revenue Growth (YoY)	8.67%	11.22%
Revenue Growth (3Y CAGR)	5.52%	17.61%
EPS Growth (YoY)	9.00%	25.21%
EPS Growth (3Y CAGR)	4.87%	33.78%

Financial Strength

Current Ratio (MRQ)

Both Fastenal (FAST) at 3.93 and TransDigm (TDG) at 3.02 post current ratio above their industries’ typical mid-ranges — short-term liquidity appears comfortable, though unusually high readings can point to idle current assets.

FAST

Capital Goods industry group

3.93

Max: 5.22
FAST: 3.93
Q3: 2.95
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

Fastenal (FAST) 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: Fastenal (FAST) carries debt-to-equity ratio of 0.11 against its industry range, while TransDigm (TDG) reports no figure this period.

FAST

Capital Goods industry group

0.11

Max: 2.33
Q3: 1.12
Median: 0.60
Q1: 0.29
FAST: 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: --

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

Financial Strength Metrics

Financial strength metrics for Fastenal (FAST) and TransDigm (TDG)
Metric	FAST	TDG
Current Ratio (MRQ)	3.93	3.02
Debt / Equity (MRQ)	0.11	--
Net Debt / EBITDA	0.12	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 Fastenal (FAST) reports a yield of 1.81%, ranking against industry peers normally.

FAST

Capital Goods industry group

1.81%

Max: 2.66%
FAST: 1.81%
Q3: 1.14%
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%

Fastenal (FAST) 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 Fastenal (FAST) reports a payout of 78.05%, ranking against industry peers normally.

FAST

Capital Goods industry group

78.05%

FAST: 78.05%
Max: 67.39%
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%

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

Dividend Metrics

Dividend metrics for Fastenal (FAST) and TransDigm (TDG)
Metric	FAST	TDG
Dividend Yield (TTM)	1.81%	0.00%
Dividend Payout Ratio (TTM)	78.05%	0.00%

Valuation

P/E Ratio (TTM)

Both Fastenal (FAST) at 43.08 and TransDigm (TDG) at 36.31 sit in the richer earnings-multiple quartile for P/E ratio, so investors are paying more for TTM earnings than they pay for typical peers.

FAST

Capital Goods industry group

43.08

Max: 59.38
FAST: 43.08
Q3: 35.92
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

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

P/S Ratio (TTM)

Both Fastenal (FAST) at 6.70 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.

FAST

Capital Goods industry group

6.70

Max: 7.54
FAST: 6.70
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

Fastenal (FAST) 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 Fastenal (FAST) reports 14.65, ranking against industry peers normally.

FAST

Capital Goods industry group

14.65

FAST: 14.65
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

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

Valuation Metrics

Valuation metrics for Fastenal (FAST) and TransDigm (TDG)
Metric	FAST	TDG
P/E Ratio (TTM)	43.08	36.31
P/S Ratio (TTM)	6.70	6.61
P/B Ratio (MRQ)	14.65	-6.74
Free Cash Flow Yield (TTM)	1.51%	2.20%