Aerospace Industrial Development (TPE:2634) Cyclically Adjusted Book per Share: NT$18.34 (As of Dec. 2025)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
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.

TPE:2634 Aerospace Industrial Development Corp TPE:2634
74 GF Score
Price NT$61.90
GF Value NT$49.24
Valuation Modestly Overvalued
! 13 Warning Signs
View Full Analysis

What is Aerospace Industrial Development Cyclically Adjusted Book per Share?

Aerospace Industrial Development TPE:2634 -3.88% 74 Cyclically Adjusted Book per Share is NT$18.34 as of Dec. 2025. GuruFocus rates TPE:2634 with a GF Score™ of 74/100 and a GF Value™ of NT$49.24 (Modestly Overvalued). The stock has 13 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.

Aerospace Industrial Development's adjusted book value per share for the three months ended in Dec. 2025 was NT$18.944. 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 NT$18.34 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Aerospace Industrial Development's average Cyclically Adjusted Book Growth Rate was 4.30% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 5.50% 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 Aerospace Industrial Development was 5.50% per year. The lowest was 5.50% per year. And the median was 5.50% per year.

As of today (2026-07-23), Aerospace Industrial Development's current stock price is NT$61.90. Aerospace Industrial Development's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was NT$18.34. Aerospace Industrial Development's Cyclically Adjusted PB Ratio of today is 3.38.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Aerospace Industrial Development was 3.95. The lowest was 1.99. And the median was 2.77.


Aerospace Industrial Development  (TPE:2634) 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.

Aerospace Industrial Development's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=61.90/18.34
=3.38

* 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.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Aerospace Industrial Development was 3.95. The lowest was 1.99. And the median was 2.77.


Be Aware

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


Aerospace Industrial Development Cyclically Adjusted Book per Share Related Terms


Aerospace Industrial Development Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Aerospace Industrial Development'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.

Aerospace Industrial Development Cyclically Adjusted Book per Share Chart

Aerospace Industrial Development Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 15.60 16.68 17.59 18.34

Aerospace Industrial Development Quarterly Data
Mar21 Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25
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 17.59 17.93 18.16 18.33 18.34

TPE:2634 vs SPCX, GE, RTX: Cyclically Adjusted Book per Share Comparison

For the Aerospace & Defense subindustry, Aerospace Industrial Development'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.


Aerospace Industrial Development Cyclically Adjusted PB Ratio vs Aerospace & Defense Industry

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

* The bar in red indicates where Aerospace Industrial Development's Cyclically Adjusted PB Ratio falls into.


TPE:2634
74GF Score
Aerospace Industrial Development Corp TPE:2634
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Aerospace Industrial Development 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, Aerospace Industrial Development's adjusted Book Value per Share data for the three months ended in Dec. 2025 was:

Adj_Book= Book Value per Share /CPI of Dec. 2025 (Change)*Current CPI (Dec. 2025)
=18.944/324.0540*324.0540
=18.944

Current CPI (Dec. 2025) = 324.0540.

Aerospace Industrial Development Quarterly Data

Book Value per Share CPI Adj_Book
201603 12.739 238.132 17.335
201606 12.046 241.018 16.196
201609 12.493 241.428 16.769
201612 13.123 241.432 17.614
201703 13.195 243.801 17.538
201706 12.687 244.955 16.784
201709 13.339 246.819 17.513
201712 13.912 246.524 18.287
201803 14.320 249.554 18.595
201806 13.865 251.989 17.830
201809 14.541 252.439 18.666
201812 15.006 251.233 19.356
201903 15.443 254.202 19.687
201906 14.567 256.143 18.429
201909 15.211 256.759 19.198
201912 15.632 256.974 19.713
202003 15.683 258.115 19.689
202006 14.739 257.797 18.527
202009 14.676 260.280 18.272
202012 14.826 260.474 18.445
202103 14.554 264.877 17.806
202106 14.947 271.696 17.827
202109 14.991 274.310 17.710
202112 15.209 278.802 17.678
202203 15.474 287.504 17.441
202206 15.817 296.311 17.298
202209 16.482 296.808 17.995
202212 16.810 296.797 18.354
202303 17.385 301.836 18.665
202306 17.164 305.109 18.230
202309 17.924 307.789 18.871
202312 18.155 306.746 19.179
202403 19.072 312.332 19.788
202406 18.283 314.175 18.858
202409 18.503 315.301 19.017
202412 19.372 315.605 19.891
202503 19.651 319.799 19.912
202506 17.754 322.561 17.836
202509 18.053 324.800 18.012
202512 18.944 324.054 18.944

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 NT$18.34 mean?
Aerospace Industrial Development (TPE:2634) has a Cyclically Adjusted Book per Share of NT$18.34 as of Dec. 2025. 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 Aerospace Industrial Development and its competitors.
Is Aerospace Industrial Development's Cyclically Adjusted Book per Share too high?
Aerospace Industrial Development's current Cyclically Adjusted Book per Share is NT$18.34. Overall, Aerospace Industrial Development has a GF Score™ of 74/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Aerospace Industrial Development's Cyclically Adjusted Book per Share compare to SPCX and GE?
Aerospace Industrial Development's Cyclically Adjusted Book per Share of NT$18.34 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 Aerospace Industrial Development and its competitors. Aerospace Industrial Development's current Cyclically Adjusted Book per Share is NT$18.34. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Aerospace Industrial Development stock overvalued right now?
Based on GuruFocus' analysis, Aerospace Industrial Development (TPE:2634) is currently considered Modestly Overvalued. The stock's GF Value™ is NT$49.24, compared to a current price of NT$61.90 — trading 25.7% above its estimated fair value. The current Cyclically Adjusted Book per Share is NT$18.34. Aerospace Industrial Development's overall GF Score™ is 74/100 with 13 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 Aerospace Industrial Development (TPE:2634), the current Cyclically Adjusted Book per Share is NT$18.34 as of Dec. 2025. 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 Aerospace Industrial Development (TPE:2634) Overvalued in 2026?

Based on GuruFocus' analysis, Aerospace Industrial Development stock appears to be overvalued. The current stock price of NT$61.90 is trading 25.7% above its estimated GF Value™ of NT$49.24. GuruFocus considers Aerospace Industrial Development to be Modestly Overvalued.

Key valuation signals for TPE:2634:

  • Cyclically Adjusted Book per Share: NT$18.34
  • GF Value™: NT$49.24 vs. price of NT$61.90 (25.7% above fair value)
  • GF Score™: 74/100 with 13 warning signs

No single metric tells the full story. See the TPE:2634 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Aerospace Industrial Development Business Description

Address No.1, Hanxiang Road, Xitun District, Taichung, TWN, 407803
Aerospace Industrial Development Corp is involved in the manufacturing and development of aerospace and defense products. The company's main business categories are as follows: design, manufacture, assembly, testing and maintenance of aircraft, engines, avionics, and related components; consulting services and technology transfers of aerospace technology, logistical support and engineering technology management of large-scale projects; engineering and development of software and sales of aerospace products. Geographically, the company operates in Asia, Europe and American regions.
74GF Score

Get the complete analysis for TPE:2634

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

NT$61.90
Price
NT$49.24
GF Value