TransDigm Group (BSP:T1DG34) Cyclically Adjusted PB Ratio: (As of Aug. 31, 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
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Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

BSP:T1DG34 TransDigm Group Inc BSP:T1DG34
91 GF Score
Price R$123.29
GF Value R$167.41
Valuation Modestly Undervalued
! 5 Warning Signs
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What is TransDigm Group Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


TransDigm Group  (BSP:T1DG34) Cyclically Adjusted PB Ratio Explanation

Compared with the regular PB Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PB Ratio smoothed out the fluctuations of book value during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Cyclically Adjusted PB Ratio should give similar results to regular PB Ratio.


TransDigm Group Cyclically Adjusted PB Ratio Related Terms


TransDigm Group Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for TransDigm Group's Cyclically Adjusted 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 Cyclically Adjusted PB Ratio Chart

TransDigm Group Annual Data
Trend Sep16 Sep17 Sep18 Sep19 Sep20 Sep21 Sep22 Sep23 Sep24 Sep25
Cyclically Adjusted 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
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Cyclically Adjusted 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

BSP:T1DG34 vs NOC, HONA, LHX: Cyclically Adjusted PB Ratio Comparison

For the Aerospace & Defense subindustry, TransDigm Group's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted 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 Cyclically Adjusted PB Ratio vs Aerospace & Defense Industry

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

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


BSP:T1DG34
91GF Score
TransDigm Group Inc BSP:T1DG34
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

TransDigm Group Cyclically Adjusted PB Ratio Calculation

Like the Shiller PE Ratio, the Cyclically Adjusted PB Ratio takes the Book Value per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/B calculation. Because it considers this 10-year average, it's often referred to as the CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio.

TransDigm Group's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 is calculated as:

For example, TransDigm Group's adjusted Book Value per Share data for the three months ended in Jun. 2026 was:

Adj_Book=Book Value per Share/CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=-18.188/333.9520*333.9520
=-18.188

Current CPI (Jun. 2026) = 333.9520.

TransDigm Group Quarterly Data

Book Value per Share CPI Adj_Book
201609 -0.795 241.428 -1.100
201612 -2.355 241.432 -3.257
201703 -2.452 243.801 -3.359
201706 -2.408 244.955 -3.283
201709 -3.560 246.819 -4.817
201712 -3.287 246.524 -4.453
201803 -2.893 249.554 -3.871
201806 -3.011 251.989 -3.990
201809 -2.818 252.439 -3.728
201812 -2.450 251.233 -3.257
201903 -2.156 254.202 -2.832
201906 -1.912 256.143 -2.493
201909 -4.460 256.759 -5.801
201912 -6.586 256.974 -8.559
202003 -7.612 258.115 -9.848
202006 -8.011 257.797 -10.378
202009 -7.884 260.280 -10.116
202012 -7.018 260.474 -8.998
202103 -7.247 264.877 -9.137
202106 -5.730 271.696 -7.043
202109 -5.577 274.310 -6.790
202112 -5.373 278.802 -6.436
202203 -5.288 287.504 -6.142
202206 -5.541 296.311 -6.245
202209 -7.279 296.808 -8.190
202212 -6.424 296.797 -7.228
202303 -5.506 301.836 -6.092
202306 -4.214 305.109 -4.612
202309 -3.543 307.789 -3.844
202312 -6.200 306.746 -6.750
202403 -5.393 312.332 -5.766
202406 -4.836 314.175 -5.140
202409 -12.392 315.301 -13.125
202412 -13.616 315.605 -14.408
202503 -11.616 319.799 -12.130
202506 -9.855 322.561 -10.203
202509 -18.429 324.800 -18.948
202512 -17.935 324.054 -18.483
202603 -17.569 330.213 -17.768
202606 -18.188 333.952 -18.188

Add all the adjusted book value per share together and divide the count will get our Cyclically Adjusted Book per Share.

Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.

Is TransDigm Group (BSP:T1DG34) Overvalued in 2026?

Based on GuruFocus' analysis, TransDigm Group stock appears to be undervalued. The current stock price of R$123.29 is trading 26.4% below its estimated GF Value™ of R$167.41. GuruFocus considers TransDigm Group to be Modestly Undervalued.

Key valuation signals for BSP:T1DG34:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: R$167.41 vs. price of R$123.29 (26.4% below fair value)
  • GF Score™: 91/100 with 5 warning signs

No single metric tells the full story. See the BSP:T1DG34 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.
91GF Score

Get the complete analysis for BSP:T1DG34

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

R$123.29
Price
R$167.41
GF Value