Question 1

What is TransDigm Group's P/E ratio?

Accepted Answer

TransDigm Group (TDG) P/E ratio is 34.4× as of July 22, 2026. The ratio is calculated by dividing market capitalisation by trailing twelve-month earnings (net income), using USD-normalised financials (IAS 21 exchange-rate translation for non-USD reporters).

Question 2

How is the P/E ratio calculated?

Accepted Answer

P/E = Share Price ÷ Trailing Twelve-Month (TTM) Diluted EPS, or equivalently Market Capitalisation ÷ TTM Net Income. All inputs are sourced from audited GAAP/IFRS filings and translated to USD using period-end exchange rates so the multiple is comparable across companies and currencies.

Question 3

What is the P/E ratio?

Accepted Answer

The price-to-earnings (P/E) ratio, also called the earnings multiple, measures how much investors pay per dollar of a company's trailing twelve-month (TTM) earnings. It is calculated as share price ÷ TTM diluted EPS (equivalent to market capitalisation ÷ TTM net income). A higher P/E implies the market is pricing in stronger future earnings growth or lower risk; a lower P/E can signal slower expected growth, higher risk, or potential undervaluation.

Question 4

What is a good P/E ratio for TransDigm Group?

Accepted Answer

There is no universal "good" P/E. As a rule of thumb, the S&P 500 has historically averaged a P/E in the mid-to-high teens; mature, slow-growth businesses commonly trade in the 10–18× range, while high-growth or asset-light companies often trade at 25–50×+. What matters is the comparison to sector peers and to the company's own historical range. For TransDigm Group specifically, the relevant sector benchmark is the current sector median of 27.8×.

Question 5

Is TransDigm Group's P/E ratio high or low?

Accepted Answer

TransDigm Group's P/E ratio of 34.4× is below its own 5-year average of 43.3× and above the sector median of 27.8×. That places the current reading at the 2th percentile of its 10-year history. A higher multiple usually reflects stronger expected growth, lower perceived risk, or higher returns on capital; a lower multiple reflects the opposite.

Question 6

What is TransDigm Group's historical P/E ratio range?

Accepted Answer

In the available daily series, TransDigm Group (TDG) P/E ratio has ranged from a low of 11.1× in 2008 to a high of 166.3× in 2021. The 5-year average is 43.3× and the 5-year median is 41.7×.

Question 7

What was TransDigm Group's P/E ratio in 2025?

Accepted Answer

TransDigm Group (TDG) P/E ratio at the end of 2025 was 36.9×. Annual values reflect the multiple on the last trading day of each calendar year, using the trailing twelve-month earnings figure available at that date.

Question 8

Why does TransDigm Group's P/E ratio change over time?

Accepted Answer

Valuation multiples move with two inputs: the numerator (market capitalisation, which tracks the share price) and the denominator (earnings). Share-price changes — driven by interest rates, earnings expectations, risk appetite, and broader market sentiment — typically dominate short-term moves, while changes in the underlying fundamental drive the longer-term trend. As a result, the ratio can rise during stock-price rallies even if the business itself has not become more valuable, and fall during sell-offs even when fundamentals are improving.


2025	$76.6B	$2.07B	36.9×	-11.4×	Sep 30, 2025
2024	$82.8B	$1.71B	48.3×	+11.1×	Sep 30, 2024
2023	$48.3B	$1.3B	37.2×	+2.8×	Sep 30, 2023
2022	$29.8B	$866M	34.4×	-19.2×	Sep 30, 2022
2021	$36.5B	$680M	53.6×	+14.7×	Sep 30, 2021
2020	$27.2B	$699M	38.9×	+1.3×	Sep 30, 2020
2019	$29.3B	$779M	37.6×	+14.9×	Sep 30, 2019
2018	$20.6B	$908M	22.7×	-9.3×	Sep 30, 2018
2017	$14B	$438M	32.0×	+4.3×	Sep 30, 2017
2016	$16.1B	$583M	27.7×	+0.6×	Sep 30, 2016
2015	$12B	$444M	27.1×	-8.8×	Sep 30, 2015
2014	$10.5B	$291M	35.9×	+9.9×	Sep 30, 2014
2013	$7.89B	$303M	26.0×	+2.1×	Sep 30, 2013
2012	$7.63B	$318M	24.0×	-1.3×	Sep 30, 2012
2011	$4.36B	$172M	25.3×	-9.2×	Sep 30, 2011
2010	$3.28B	$95.1M	34.5×	+18.4×	Sep 30, 2010
2009	$2.62B	$163M	16.1×	+3.6×	Sep 30, 2009
2008	$1.66B	$133M	12.5×	-12.1×	Sep 30, 2008
2007	$2.18B	$88.6M	24.6×	-18.9×	Sep 30, 2007
2006	$1.09B	$25.1M	43.5×	—	Sep 30, 2006


Pentair (PNR)	21.1×
Lennox International (LII)	20.6×
Copart (CPRT)	20.4×
Union Pacific (UNP)	19.9×
Allegion (ALLE)	19.7×
Alamo Group (ALG)	19.6×
Andersons (ANDE)	19.0×
Carlisle Companies (CSL)	18.8×
Snap-on (SNA)	18.5×
Brady (BRC)	18.5×
Canadian National Railway (CNI)	18.4×
FedEx (FDX)	18.4×
Pool (POOL)	18.1×
McGrath RentCorp (MGRC)	17.5×
Honeywell International (HON)	17.5×
A. O. Smith (AOS)	17.4×
Textron (TXT)	16.6×
Northrop Grumman (NOC)	16.1×
United Parcel Service (UPS)	15.9×
Delta Air Lines (DAL)	15.5×
ABM Industries (ABM)	15.2×
Masco (MAS)	14.6×
Upwork (UPWK)	12.9×
United Airlines Holdings (UAL)	12.7×
AGCO (AGCO)	10.9×

P/E Ratio for TransDigm Group (TDG) 2006-2026

P/E Ratio daily chart for TransDigm Group (TDG)

Historical P/E Ratio for TransDigm Group (TDG) from 2006 to 2025

About P/E Ratio at TransDigm Group (TDG)

TransDigm Group P/E Ratio by Year

TransDigm Group P/E Ratio 2025: 36.9×

TransDigm Group P/E Ratio 2024: 48.3×

TransDigm Group P/E Ratio 2023: 37.2×

TransDigm Group P/E Ratio 2022: 34.4×

TransDigm Group P/E Ratio 2021: 53.6×

Sector peers by P/E Ratio — chart

Sector peers by P/E Ratio — table

Frequently asked questions

TransDigm Group (TDG) Key Financials