TransDigm Groupvs.Teledyne Technologies
TDG vs TDY · both in Dual-use technology, part of the Defense, security & space value chain: Technology with both civil and military uses, from sensors to avionics.
TransDigm Group is about 2.1× larger than Teledyne Technologies by market cap; year to date, Teledyne Technologies leads (+18.4% vs −18.1%).
Side by side
| TDG | TDY | |
|---|---|---|
| Market cap | $60.8B | $28.5B |
| Price | $1,107.99 | $613.66 |
| Today | +1.7% | +1.5% |
| Return YTD | −18.1% | +18.4% |
| Return 1Y | −15.3% | +2.9% |
| Since June 26, 2026 | −16.4% | −1.7% |
| P/E | 28.6 | 29.2 |
| P/S | 6.1 | 4.5 |
| P/B | 75.8 | 2.6 |
Data as of 2026-10-09 · updates daily after U.S. close
Since June 26, 2026: the change in the closing price, from the daily closes Sectivia records itself since that date.
The two companies
Teledyne TechnologiesTDY
Imaging sensors and instrumentation, including the FLIR line and unmanned systems, sold into civil and military markets alike.
Full TDY profile →More TDG & TDY comparisons
Other head-to-heads in the Dual-use technology segment.
See where TDG and TDY sit in the full Defense, security & space map: every segment from suppliers to end markets.Open the Defense value chain →