TransDigm Group (BSP:T1DG34) Cyclically Adjusted Book per Share: R$-7.54 (As of Mar. 2026)

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BSP:T1DG34 TransDigm Group Inc BSP:T1DG34
91 GF Score
Price R$128.44
GF Value R$159.78
Valuation Modestly Undervalued
! 5 Warning Signs
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What is TransDigm Group Cyclically Adjusted Book per Share?

TransDigm Group BSP:T1DG34 +1.13% 91 Cyclically Adjusted Book per Share is R$-7.54 as of Mar. 2026. GuruFocus rates BSP:T1DG34 with a GF Score™ of 91/100 and a GF Value™ of R$159.78 (Modestly Undervalued). The stock has 5 warning signs investors should review.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

TransDigm Group's adjusted book value per share for the three months ended in Mar. 2026 was R$-17.569. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is R$-7.54 for the trailing ten years ended in Mar. 2026.

During the past 3 years, the average Cyclically Adjusted Book Growth Rate was -16.40% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was -23.90% per year. Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the Cyclically Adjusted Book Growth Rate using Cyclically Adjusted Book per Share data.

During the past 13 years, the highest 3-Year average Cyclically Adjusted Book Growth Rate of TransDigm Group was -16.40% per year. The lowest was -173.10% per year. And the median was -41.00% per year.

As of today (2026-08-03), TransDigm Group's current stock price is R$128.44. TransDigm Group's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was R$-7.54. TransDigm Group's Cyclically Adjusted PB Ratio of today is .

During the past 13 years, the highest Cyclically Adjusted PB Ratio of TransDigm Group was 427.61. The lowest was 58.12. And the median was 81.49.


TransDigm Group  (BSP:T1DG34) Cyclically Adjusted Book per Share Explanation

If a company grows much fast than inflation, Cyclically Adjusted Book per Share may underestimate the company's equity. Cyclically Adjusted PB Ratio can seem to be too high even the actual PB Ratio is low.

For the Cyclically Adjusted PB Ratio, the book value of the past 10 years are inflation-adjusted and averaged. The result is used for P/B calculation. Since it looks at the average over the last 10 years, the Cyclically Adjusted PB Ratio is also called CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of TransDigm Group was 427.61. The lowest was 58.12. And the median was 81.49.


Be Aware

Cyclically Adjusted PB Ratio works better for cyclical companies. It gives you a better idea on the company's real book value.


TransDigm Group Cyclically Adjusted Book per Share Related Terms


TransDigm Group Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for TransDigm Group's Cyclically Adjusted Book per Share 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 Book per Share Chart

TransDigm Group Annual Data
Trend Sep16 Sep17 Sep18 Sep19 Sep20 Sep21 Sep22 Sep23 Sep24 Sep25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only -3.10 -4.44 -4.96 -5.91 -6.83

TransDigm Group Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Cyclically Adjusted Book per Share 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 -6.79 -6.63 -6.83 -7.61 -7.54

BSP:T1DG34 vs HONA, NOC, LHX: Cyclically Adjusted Book per Share 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 Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

TransDigm Group Cyclically Adjusted Book per Share Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

What is Cyclically Adjusted Book per Share? How do we calculate Cyclically Adjusted Book per Share?

Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the Cyclically Adjusted Book per Share of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the book value per share from 2001 through 2010.

We adjusted the 2001 book value per share data with the total inflation from 2001 through 2010 to the equivalent book value in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart's book value is $1 a share in 2001, then the 2001's equivalent book value in 2010 is $1.4 a share. If Wal-Mart's book value is $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 book value in 2010 is $1.35. So on and so forth, you get the equivalent book value per share of past 10 years. Then you add them together and divided the sum by the count to get 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.

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

Adj_Book= Book Value per Share /CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=-17.569/330.2130*330.2130
=-17.569

Current CPI (Mar. 2026) = 330.2130.

TransDigm Group Quarterly Data

Book Value per Share CPI Adj_Book
201606 -1.039 241.018 -1.424
201609 -0.795 241.428 -1.087
201612 -2.355 241.432 -3.221
201703 -2.452 243.801 -3.321
201706 -2.408 244.955 -3.246
201709 -3.560 246.819 -4.763
201712 -3.287 246.524 -4.403
201803 -2.893 249.554 -3.828
201806 -3.011 251.989 -3.946
201809 -2.818 252.439 -3.686
201812 -2.450 251.233 -3.220
201903 -2.156 254.202 -2.801
201906 -1.912 256.143 -2.465
201909 -4.460 256.759 -5.736
201912 -6.586 256.974 -8.463
202003 -7.612 258.115 -9.738
202006 -8.011 257.797 -10.261
202009 -7.884 260.280 -10.002
202012 -7.018 260.474 -8.897
202103 -7.247 264.877 -9.035
202106 -5.730 271.696 -6.964
202109 -5.577 274.310 -6.714
202112 -5.373 278.802 -6.364
202203 -5.288 287.504 -6.074
202206 -5.541 296.311 -6.175
202209 -7.279 296.808 -8.098
202212 -6.424 296.797 -7.147
202303 -5.506 301.836 -6.024
202306 -4.214 305.109 -4.561
202309 -3.543 307.789 -3.801
202312 -6.200 306.746 -6.674
202403 -5.393 312.332 -5.702
202406 -4.836 314.175 -5.083
202409 -12.392 315.301 -12.978
202412 -13.616 315.605 -14.246
202503 -11.616 319.799 -11.994
202506 -9.855 322.561 -10.089
202509 -18.429 324.800 -18.736
202512 -17.935 324.054 -18.276
202603 -17.569 330.213 -17.569

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

What does a Cyclically Adjusted Book per Share of R$-7.54 mean?
TransDigm Group (BSP:T1DG34) has a Cyclically Adjusted Book per Share of R$-7.54 as of Mar. 2026. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on TransDigm Group and its competitors.
Is TransDigm Group's Cyclically Adjusted Book per Share too high?
TransDigm Group's current Cyclically Adjusted Book per Share is R$-7.54. Overall, TransDigm Group has a GF Score™ of 91/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does TransDigm Group's Cyclically Adjusted Book per Share compare to HONA and NOC?
TransDigm Group's Cyclically Adjusted Book per Share of R$-7.54 can be compared against companies in the Aerospace & Defense industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted Book per Share for an Aerospace & Defense company?
A good Cyclically Adjusted Book per Share depends on the Aerospace & Defense industry context. However, Cyclically Adjusted Book per Share should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Cyclically Adjusted Book per Share mean?
A high Cyclically Adjusted Book per Share can signal that a stock is expensive relative to its fundamentals. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on TransDigm Group and its competitors. TransDigm Group's current Cyclically Adjusted Book per Share is R$-7.54. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is TransDigm Group stock overvalued right now?
Based on GuruFocus' analysis, TransDigm Group (BSP:T1DG34) is currently considered Modestly Undervalued. The stock's GF Value™ is R$159.78, compared to a current price of R$128.44 — trading 19.6% below its estimated fair value. The current Cyclically Adjusted Book per Share is R$-7.54. TransDigm Group's overall GF Score™ is 91/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted Book per Share calculated?
Cyclically Adjusted Book per Share is calculated from a company's financial statements. For TransDigm Group (BSP:T1DG34), the current Cyclically Adjusted Book per Share is R$-7.54 as of Mar. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

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$128.44 is trading 19.6% below its estimated GF Value™ of R$159.78. GuruFocus considers TransDigm Group to be Modestly Undervalued.

Key valuation signals for BSP:T1DG34:

  • Cyclically Adjusted Book per Share: R$-7.54
  • GF Value™: R$159.78 vs. price of R$128.44 (19.6% 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 Book per Share is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

R$128.44
Price
R$159.78
GF Value