BA vs TDG
Boeing (BA) and TransDigm (TDG) compared side by side. Boeing (BA) is larger, with a market cap of $148.9B versus $61.1B for TransDigm, about 2.4 times the size. On trailing earnings, TDG is cheaper at 33.5x versus 67.3x for BA.
Head to head
| Metric | BA | TDG |
|---|---|---|
| Market cap | $148.9B | $61.1B |
| P/E (TTM) | 67.3x | 33.5x |
| Forward P/E | 50.1x | 22.7x |
| Revenue (TTM) | $94.0B | $10.0B |
| Revenue growth | 8.0% | 22.5% |
| Gross margin | 4.7% | 59.8% |
| Operating margin | 0.0% | 46.0% |
| Free cash flow | -$1.1B | $1.9B |
| Dividend yield | None | None |
| 1-year return | -13.5% | -18.2% |
| 5-year return (annual) | -2.4% | +15.4% |
| Max drawdown | -88% | -63% |
| FI Handbook grade | D | C |
Highlighted: the stronger figure on metrics where higher or lower is clearly better.
Growth of $10,000 (5 years, price only)
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BA vs TDG FAQ
Which is bigger, BA or TDG?
Boeing (BA) is larger, with a market cap of $148.9B versus $61.1B for TransDigm, about 2.4 times the size.
Is BA or TDG cheaper?
On trailing earnings, TDG is cheaper at 33.5x versus 67.3x for BA. A lower P/E can reflect slower expected growth, so compare growth and margins too.
Which stock performed better over the past year, BA or TDG?
BA returned -13.5% over the past year including dividends, versus -18.2% for TDG, through October 23, 2026.