TDG (TransDigm Group) PB Ratio: (As of Jul. 11, 2026)


TDG TransDigm Group Inc TDG
89 GF Score
Price $1,291.35
GF Value $1,595.02
Valuation Modestly Undervalued
! 5 Warning Signs
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What is TransDigm Group PB Ratio?

The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. As of today (2026-07-11), TransDigm Group's share price is $1291.35. TransDigm Group's Book Value per Share for the quarter that ended in Mar. 2026 was $-167.97. Hence, TransDigm Group's PB Ratio of today is .

The historical rank and industry rank for TransDigm Group's PB Ratio or its related term are showing as below:

TDG's PB Ratio is not ranked *
in the Aerospace & Defense industry.
Industry Median: 3.73
* Ranked among companies with meaningful PB Ratio only.

During the past 3 years, the average Book Value Per Share Growth Rate was -35.30% per year. During the past 5 years, the average Book Value Per Share Growth Rate was -18.30% per year. During the past 10 years, the average Book Value Per Share Growth Rate was -19.70% per year.

During the past 13 years, the highest 3-Year average Book Value Per Share Growth Rate of TransDigm Group was 27.20% per year. The lowest was -64.30% per year. And the median was -8.60% per year.

Back to Basics: PB Ratio


TransDigm Group  (NYSE:TDG) PB Ratio Explanation

Unlike valuation ratios relative to the earning power such as PE Ratio, PE Ratio without NRI, PS Ratio, Price-to-Operating-Cash-Flow , or Price-to-Free-Cash-Flow, the PB Ratio measures the valuation of the stock relative to the underlying asset of the company.

The PB Ratio works the best for the businesses that earn most of their profit from their assets, e.g. banks and insurance companies.


Be Aware

Some businesses have very light assets, such as software companies or insurance agencies. The PB Ratio does not work well for these companies. Some companies even have negative equity, so the PB Ratio cannot be applied to them.


TransDigm Group PB Ratio Related Terms


TransDigm Group PB Ratio Historical Data

* Premium members only.

The historical data trend for TransDigm Group's PB Ratio can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

TransDigm Group PB Ratio Chart

TransDigm Group Annual Data
Trend Sep16 Sep17 Sep18 Sep19 Sep20 Sep21 Sep22 Sep23 Sep24 Sep25
PB Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 0.00 0.00 0.00 0.00

TransDigm Group Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
PB Ratio Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 0.00 0.00 0.00 0.00 0.00

TDG vs NOC, HONAV, GD: PB Ratio Comparison

For the Aerospace & Defense subindustry, TransDigm Group's PB Ratio, along with its competitors' market caps and PB Ratio data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.


TransDigm Group PB Ratio vs Aerospace & Defense Industry

For the Aerospace & Defense industry and Industrials sector, TransDigm Group's PB Ratio distribution charts can be found below:

* The bar in red indicates where TransDigm Group's PB Ratio falls into.


TDG
89GF Score
TransDigm Group Inc TDG
PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

TransDigm Group PB Ratio Calculation

The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. It is a ratio widely used to value stocks.

TransDigm Group's PB Ratio for today is calculated as follows:

PB Ratio=Share Price/Book Value per Share (Q: Mar. 2026)
=1291.35/-167.974
=

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

It can also be calculated from the numbers for the whole company:

A closely related ratio is called Price-to-Tangible-Book. The difference between Price-to-Tangible-Book and PB Ratio is that book value other than intangibles are used in the calculation.

Is TransDigm Group (TDG) Overvalued in 2026?

Based on GuruFocus' analysis, TransDigm Group stock appears to be undervalued. The current stock price of $1,291.35 is trading 19% below its estimated GF Value™ of $1,595.02. GuruFocus considers TransDigm Group to be Modestly Undervalued.

Key valuation signals for TDG:

  • PB Ratio:
  • GF Value™: $1,595.02 vs. price of $1,291.35 (19% below fair value)
  • GF Score™: 89/100 with 5 warning signs

No single metric tells the full story. See the TDG stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


TransDigm Group Business Description

Address 1350 Euclid Avenue, Suite 1600, Cleveland, OH, USA, 44115
TransDigm manufactures and services a broad set of specialized parts for commercial and military aircraft. The firm organizes itself in three segments: power and control, airframes, and a small non-aviation segment, which serves mostly off-road vehicles and mining equipment. It operates as an acquisitive holding company that focuses on buying up smaller firms that make proprietary aerospace products with substantial aftermarket demand. TransDigm regularly employs financial leverage to amplify its operating results.
89GF Score

Get the complete analysis for TDG

PB Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$1,291.35
Price
$1,595.02
GF Value