HEI vs TDG vs BA Stock Comparison

Heico, TransDigm and Boeing Prices as of Oct 27, 2026 Peers: Industry group
HEI Heico Corp
$308.73 +0.1% 1M -2.3% 1Y
Market cap
$43.13B
P/E
50.9x
Revenue (TTM)
$5.18B
Div. yield
0.08%
Commercial Aerospace Industrials
5 wins
TDG TransDigm Group INC
$1,130.73 +1.3% 1M -16.5% 1Y
Market cap
$62.50B
P/E
34.0x
Revenue (TTM)
$10.01B
Div. yield
–
Commercial Aerospace Industrials
3 wins
BA Boeing Co
$168.16 -15.1% 1M -24.6% 1Y
Market cap
$133.26B
P/E
18.2x
Revenue (TTM)
$94.91B
Div. yield
–
Commercial Aerospace Industrials
3 wins

Head to Head

11 decided of 12

Heico leads on 5 of the 12 questions below (Heico 5, Boeing 3, TransDigm 3). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionHEITDGBALeader
Larger companyMarket capitalisation $43.13B $62.50B $133.26B BA
Cheaper on earningsLower P/E, profitable companies only 50.9x 34.0x 18.2x BA
Cheaper on forward earningsLower price / next fiscal year consensus EPS 50.8x 25.7x — TDG
Faster revenue growthRevenue growth, trailing twelve months +20.7% +16.6% +17.5% HEI
More profitableNet margin, trailing twelve months 16.4% 19.1% 7.7% TDG
Better return on capitalReturn on invested capital 13.5% 15.5% 18.2% BA
Less leveragedLower net debt / EBITDA 1.6x 6.1x 2.1x HEI
Higher dividend yieldTrailing dividend yield 0.08% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months -2.3% -16.5% -24.6% HEI
Better 5-year returnAnnualised price return, 5 years +17.0%/yr +12.5%/yr -4.2%/yr HEI
Less volatileAnnualised volatility, 1 year 32.4% 27.2% 36.2% TDG
Higher overall scoreMean of the five percentile scores vs peers 67/100 66/100 57/100 HEI

Percentile Scorecard

HEITDGBA

Each axis is the mean percentile of its metrics against the company's industry group. 100 is the best in the group, 50 the middle.

Scores by Axis

AxisHEITDGBA
Valuation 35 #65 of 100 53 #48 of 100 65 #36 of 100
Growth 80 #20 of 97 68 #32 of 97 87 #14 of 97
Profitability 94 #7 of 96 96 #5 of 96 66 #33 of 96
Financial Health 60 #43 of 105 17 #87 of 105 13 #92 of 105
Shareholder Returns 66 #23 of 65 95 #4 of 65 –
Overall 67 66 57
  • HEI ranked among 107 companies in Aerospace and Defense
  • TDG ranked among 107 companies in Aerospace and Defense
  • BA ranked among 107 companies in Aerospace and Defense

Price Performance

Price return, split-adjusted, before dividends. Click a name to hide or show it.

Returns

PeriodHEITDGBASPY
1 month +0.1%+1.3%-15.1% -0.2%
3 months -15.1%-13.5%-24.1% +3.9%
6 months +17.0%-2.0%-27.1% +8.2%
Year to date -4.6%-15.0%-22.5% +12.9%
1 year -2.3%-16.5%-24.6% +12.3%
3 years +96.2%+38.1%-6.4% +87.4%
3 years, per year +25.2%+11.4%-2.2% +23.3%
5 years +119.5%+79.9%-19.1% +67.9%
5 years, per year +17.0%+12.5%-4.2% +10.9%
10 years +797.2%+319.4%+17.3% +261.1%
10 years, per year +24.5%+15.4%+1.6% +13.7%

Risk

MeasureHEITDGBASPY
Volatility, 1Y 32.4%27.2%36.2% 12.7%
Downside volatility, 1Y 31.2%29.0%36.5% 12.7%
Beta vs S&P 500, 1Y 1.140.751.19 1.00
Return / volatility, 1Y -0.07-0.61-0.68 0.97
Max drawdown, 5Y -27.1%-33.6%-50.3% -25.4%
From 52-week high -17.6%-22.0%-33.3% -1.2%
52-week high $374.67$1,450.00$252.15 $779.14
52-week low $260.99$1,076.01$168.16 $631.97

Valuation History

Weekly multiples on trailing twelve-month fundamentals. Negative or extreme readings (a loss year, a collapsed denominator) are left out so the chart stays readable.

MultipleHEITDGBA
P/E now vs peer median 50.9xmedian 26.5x 34.0xmedian 26.5x 18.2xmedian 26.5x
P/S now vs peer median 8.3xmedian 3.0x 6.2xmedian 3.0x 1.4xmedian 3.0x
EV/EBITDA now vs peer median 31.1xmedian 14.6x 18.4xmedian 14.6x 13.2xmedian 14.6x
P/FCF now vs peer median 41.9xmedian 26.4x 32.4xmedian 26.4x 8,329xmedian 26.4x
P/B now vs peer median 8.6xmedian 2.5x -6.4xmedian 2.5x 20.3xmedian 2.5x
PEG now vs peer median 1.82median 0.90 1.61median 0.90 0.31median 0.90

Financial History

Reported figures by fiscal period, placed on the calendar year (or quarter) each period ended in, so companies with different fiscal years line up.

Trailing twelve monthsHEITDGBA
Revenue $5.18B $10.01B $94.91B
Gross profit $2.09B $5.96B $8.94B
Operating income $1.24B $4.61B $9.74B
Net income $912.35M $2.13B $7.66B
Free cash flow $1.03B $1.93B $16.00M
R&D – – $3.62B
EPS (diluted) $6.00 $33.29 $9.22
Cash & equivalents $240.96M $2.77B $9.50B
Total debt $2.54B $33.49B $45.92B
Shares (diluted) 141.27M 57.40M 792.90M
Enterprise value $42.82B $50.59B $42.23B

All Metrics

58 metrics · best in bold

Bold marks the best reading: the lowest positive value for multiples, leverage and payout, the highest for everything else. The bar under each value is its percentile against that company's own peers. Hover a value for its rank and the peer median.

Valuation

12 metrics
MetricHEITDGBA
P/E 50.9x 34.0x 18.2x
P/FCF 41.9x 32.4x 8,329x
P/Operating cash flow 38.8x 28.4x 33.2x
P/S 8.3x 6.2x 1.4x
P/B 8.6x -6.4x 20.3x
P/Tangible book 13.3x -4.3x 25.2x
EV/EBITDA 31.1x 18.4x 13.2x
EV/EBIT 36.5x 20.2x 16.3x
EV/Revenue 8.8x 9.3x 1.7x
EV/FCF 44.1x 48.4x 9,904x
EV/Operating cash flow 40.9x 42.4x 39.5x
PEG (3Y EPS CAGR) 1.82 1.61 0.31

Growth

14 metrics
MetricHEITDGBA
Revenue growth (1Y) 20.7% 16.6% 17.5%
Revenue CAGR (3Y) 25.1% 17.0% 7.8%
Gross profit growth (1Y) 23.4% 16.9% 906.6%
Gross profit CAGR (3Y) 26.7% 17.9% 9.1%
Operating income growth (1Y) 29.8% 16.7% 217.8%
Operating income CAGR (3Y) 28.8% 19.4% 107.6%
Net income growth (1Y) 31.5% 10.2% 177.7%
Net income CAGR (3Y) 27.4% 22.8% 67.1%
EPS growth (1Y) 31.8% 10.5% 168.9%
EPS CAGR (3Y) 27.9% 21.1% 58.4%
Operating cash flow growth (1Y) 31.6% 4.5% 208.0%
Operating cash flow CAGR (3Y) 35.7% 22.8% -12.7%
Free cash flow growth (1Y) 31.7% 1.1% 100.3%
Free cash flow CAGR (3Y) 36.8% 22.4% -84.9%

Profitability

14 metrics
MetricHEITDGBA
Gross margin 40.4% 59.6% 9.4%
EBITDA margin 28.2% 50.7% 12.7%
Operating margin 24.0% 46.0% 10.3%
Pretax margin 21.6% 27.4% 8.3%
Net margin 16.4% 19.1% 7.7%
FCF margin 19.9% 19.3% 0.0%
Operating cash flow margin 21.5% 22.0% 4.2%
Return on equity 18.5% – 121.0%
Return on assets 9.3% 8.2% 4.6%
Return on invested capital 13.5% 15.5% 18.2%
Return on capital employed 14.2% 19.6% 17.9%
Asset turnover 0.5x 0.4x 0.6x
Cash conversion (OCF / net income) 1.2x 1.0x 0.5x
Stock comp / revenue 1.0% 1.5% 0.5%

Financial Health

11 metrics
MetricHEITDGBA
Debt / assets 25.6% 125.2% 26.9%
Debt / equity 0.5x -3.4x 7.0x
Net debt / EBITDA 1.6x 6.1x 2.1x
Debt / FCF 2.5x 17.4x 2,870x
Liabilities / assets 49.4% 136.7% 96.2%
Equity / assets 50.6% -36.7% 3.8%
Interest coverage 9.4x 2.5x 4.0x
Current ratio 2.7x 3.0x 1.1x
Quick ratio 1.0x 1.9x 0.3x
Cash ratio 0.2x 1.1x 0.2x
Altman Z-score 7.01 1.72 1.47

Shareholder Returns

7 metrics
MetricHEITDGBA
Dividend yield 0.1% – –
Net buyback yield 0.0% 2.7% –
Shareholder yield 0.1% 2.7% 0.0%
Payout ratio (earnings) 3.8% – –
Payout ratio (FCF) 3.4% – –
Dividend growth (1Y) 9.1% – –
Dividend CAGR (3Y) 8.4% – –

Analyst Estimates

Solid lines are reported fiscal-year results; dashed lines are the consensus for the years ahead. Hover a year for the analysts' high and low, and how each result compared with its estimate.

ConsensusHEITDGBA
Forward P/E 50.8xFY2026 25.7xFY2026 –
EPS, next fiscal year $6.08FY2026 $44.01FY2026 $-0.99FY2026
EPS growth, next FY +24.1%FY2026 +17.9%FY2026 -183.2%FY2026
EPS growth, the year after +20.6% +7.9% –
Revenue, next fiscal year $5.68BFY2026 $10.01BFY2026 $91.05BFY2026
Revenue growth, next FY +26.6%FY2026 +13.4%FY2026 +1.8%FY2026
Revenue growth, the year after +10.4% +24.4% +18.5%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersHEITDGBA
Held by institutions 78.3% 93.2% 75.6%
Institutions holding 772 1,140 2,626
Change in shares held, QoQ +7.4% +1.2% +2.3%
Institutions buying 371 584 1,327
Institutions selling 267 367 843
Buyers to sellers 1.39 1.59 1.57

Return Correlation

Daily returns, last 12 months

1.00 means two stocks move in lockstep, 0 that they move independently. Pairs below about 0.5 diversify each other.

HEITDGBA
HEI 1.00 0.53 0.38
TDG 0.53 1.00 0.36
BA 0.38 0.36 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, HEI, TDG and BA?

Boeing (BA) is the largest by market capitalisation: Heico (HEI) $43.13B, TransDigm (TDG) $62.50B, Boeing (BA) $133.26B.

Which stock is cheaper, HEI, TDG and BA?

Boeing (BA) trades on the lowest price-to-earnings ratio (Heico (HEI) 50.9x, TransDigm (TDG) 34.0x, Boeing (BA) 18.2x). On next year's consensus earnings, TransDigm (TDG) is cheapest (Heico (HEI) 50.8x, TransDigm (TDG) 25.7x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Heico (HEI) grew revenue fastest over the trailing twelve months: Heico (HEI) +20.7%, TransDigm (TDG) +16.6%, Boeing (BA) +17.5%.

Which company is more profitable?

TransDigm (TDG) has the highest net margin (Heico (HEI) 16.4%, TransDigm (TDG) 19.1%, Boeing (BA) 7.7%). On return on invested capital, Boeing (BA) leads (Heico (HEI) 13.5%, TransDigm (TDG) 15.5%, Boeing (BA) 18.2%).

Which stock has performed better?

Over the past year Heico (HEI) returned the most: Heico (HEI) -2.3%, TransDigm (TDG) -16.5%, Boeing (BA) -24.6%. Over five years, Heico (HEI) compounded fastest (Heico (HEI) +17.0%/yr, TransDigm (TDG) +12.5%/yr, Boeing (BA) -4.2%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Only one of these companies pays a dividend: Heico (HEI) 0.08%, TransDigm (TDG) 0.00%, Boeing (BA) 0.00%. TransDigm (TDG) and Boeing (BA) pays no regular dividend.

Which stock is riskier?

By one-year price volatility, TransDigm (TDG) has been the steadiest (Heico (HEI) 32.4%, TransDigm (TDG) 27.2%, Boeing (BA) 36.2%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, HEI, TDG and BA?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Heico (HEI) leads on 5. Business Quant does not give investment advice; use the comparison as a starting point for your own research.

Data from SEC filings, exchange prices and consensus estimates, via Business Quant. Percentile scores compare each company with its own peer group, so two companies' scores are each relative to different peers unless you rank against the whole market. Price returns exclude dividends. Nothing on this page is investment advice.