Ruentex Engineeringnstruction Co (TPE:2597) Cyclically Adjusted Book per Share: NT$19.31 (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:2597 Ruentex Engineering & Construction Co TPE:2597
94 GF Score
Price NT$163.50
GF Value NT$162.91
Valuation Fairly Valued
! 1 Warning Sign
View Full Analysis

What is Ruentex Engineeringnstruction Co Cyclically Adjusted Book per Share?

Ruentex Engineeringnstruction Co TPE:2597 -2.97% 94 Cyclically Adjusted Book per Share is NT$19.31 as of Dec. 2025. GuruFocus rates TPE:2597 with a GF Score™ of 94/100 and a GF Value™ of NT$162.91 (Fairly Valued). The stock has 1 warning sign 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.

Ruentex Engineeringnstruction Co's adjusted book value per share for the three months ended in Dec. 2025 was NT$29.179. 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$19.31 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Ruentex Engineeringnstruction Co's average Cyclically Adjusted Book Growth Rate was 6.90% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 5.60% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 7.30% 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 Ruentex Engineeringnstruction Co was 8.50% per year. The lowest was 5.60% per year. And the median was 6.95% per year.

As of today (2026-07-14), Ruentex Engineeringnstruction Co's current stock price is NT$163.50. Ruentex Engineeringnstruction Co's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was NT$19.31. Ruentex Engineeringnstruction Co's Cyclically Adjusted PB Ratio of today is 8.47.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Ruentex Engineeringnstruction Co was 9.87. The lowest was 1.62. And the median was 4.56.


Ruentex Engineeringnstruction Co  (TPE:2597) 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.

Ruentex Engineeringnstruction Co's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=163.50/19.31
=8.47

* 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 Ruentex Engineeringnstruction Co was 9.87. The lowest was 1.62. And the median was 4.56.


Be Aware

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


Ruentex Engineeringnstruction Co Cyclically Adjusted Book per Share Related Terms


Ruentex Engineeringnstruction Co Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Ruentex Engineeringnstruction Co'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.

Ruentex Engineeringnstruction Co Cyclically Adjusted Book per Share Chart

Ruentex Engineeringnstruction Co 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 14.85 16.39 17.05 18.07 19.31

Ruentex Engineeringnstruction Co 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 18.07 18.48 18.77 19.10 19.31

TPE:2597 vs PWR, FIX, EME: Cyclically Adjusted Book per Share Comparison

For the Engineering & Construction subindustry, Ruentex Engineeringnstruction Co'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.


Ruentex Engineeringnstruction Co Cyclically Adjusted PB Ratio vs Construction Industry

For the Construction industry and Industrials sector, Ruentex Engineeringnstruction Co's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where Ruentex Engineeringnstruction Co's Cyclically Adjusted PB Ratio falls into.


TPE:2597
94GF Score
Ruentex Engineering & Construction Co TPE:2597
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Ruentex Engineeringnstruction Co 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, Ruentex Engineeringnstruction Co'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)
=29.179/324.0540*324.0540
=29.179

Current CPI (Dec. 2025) = 324.0540.

Ruentex Engineeringnstruction Co Quarterly Data

Book Value per Share CPI Adj_Book
201603 13.101 238.132 17.828
201606 10.779 241.018 14.493
201609 11.747 241.428 15.767
201612 12.897 241.432 17.311
201703 12.646 243.801 16.809
201706 10.863 244.955 14.371
201709 11.065 246.819 14.527
201712 11.892 246.524 15.632
201803 12.857 249.554 16.695
201806 13.029 251.989 16.755
201809 13.800 252.439 17.715
201812 12.959 251.233 16.715
201903 13.184 254.202 16.807
201906 11.198 256.143 14.167
201909 11.361 256.759 14.339
201912 12.414 256.974 15.655
202003 12.282 258.115 15.420
202006 10.931 257.797 13.740
202009 11.638 260.280 14.490
202012 13.673 260.474 17.010
202103 15.670 264.877 19.171
202106 14.867 271.696 17.732
202109 19.503 274.310 23.040
202112 21.486 278.802 24.973
202203 24.265 287.504 27.350
202206 17.041 296.311 18.637
202209 16.521 296.808 18.038
202212 21.024 296.797 22.955
202303 20.037 301.836 21.512
202306 15.919 305.109 16.907
202309 17.499 307.789 18.424
202312 20.820 306.746 21.995
202403 21.157 312.332 21.951
202406 22.002 314.175 22.694
202409 26.189 315.301 26.916
202412 28.338 315.605 29.097
202503 27.560 319.799 27.927
202506 22.361 322.561 22.464
202509 25.240 324.800 25.182
202512 29.179 324.054 29.179

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$19.31 mean?
Ruentex Engineeringnstruction Co (TPE:2597) has a Cyclically Adjusted Book per Share of NT$19.31 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 Ruentex Engineeringnstruction Co and its competitors.
Is Ruentex Engineeringnstruction Co's Cyclically Adjusted Book per Share too high?
Ruentex Engineeringnstruction Co's current Cyclically Adjusted Book per Share is NT$19.31. Overall, Ruentex Engineeringnstruction Co has a GF Score™ of 94/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Ruentex Engineeringnstruction Co's Cyclically Adjusted Book per Share compare to PWR and FIX?
Ruentex Engineeringnstruction Co's Cyclically Adjusted Book per Share of NT$19.31 can be compared against companies in the Construction 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 a Construction company?
A good Cyclically Adjusted Book per Share depends on the Construction 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 Ruentex Engineeringnstruction Co and its competitors. Ruentex Engineeringnstruction Co's current Cyclically Adjusted Book per Share is NT$19.31. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Ruentex Engineeringnstruction Co stock overvalued right now?
Based on GuruFocus' analysis, Ruentex Engineeringnstruction Co (TPE:2597) is currently considered Fairly Valued. The stock's GF Value™ is NT$162.91, compared to a current price of NT$163.50 — trading 0.4% above its estimated fair value. The current Cyclically Adjusted Book per Share is NT$19.31. Ruentex Engineeringnstruction Co's overall GF Score™ is 94/100 with 1 warning sign 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 Ruentex Engineeringnstruction Co (TPE:2597), the current Cyclically Adjusted Book per Share is NT$19.31 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 Ruentex Engineeringnstruction Co (TPE:2597) Overvalued in 2026?

Based on GuruFocus' analysis, Ruentex Engineeringnstruction Co stock appears to be overvalued. The current stock price of NT$163.50 is trading 0.4% above its estimated GF Value™ of NT$162.91. GuruFocus considers Ruentex Engineeringnstruction Co to be Fairly Valued.

Key valuation signals for TPE:2597:

  • Cyclically Adjusted Book per Share: NT$19.31
  • GF Value™: NT$162.91 vs. price of NT$163.50 (0.4% above fair value)
  • GF Score™: 94/100 with 1 warning sign

No single metric tells the full story. See the TPE:2597 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Ruentex Engineeringnstruction Co Business Description

Address No. 308, Bade Road, 10th Foor, Section 2, Jhongshan District, Taipei, TWN, 104
Ruentex Engineering & Construction Co is a Taiwan-based company that engages in the contracting, designing, and constructing of construction and civil engineering. It designs and constructs projects like residential buildings, office buildings, school buildings, factories, and parking lots, among others. The company's segments include Construction Business Division, Building Materials Division, and Interior Decoration Design Division. It generates the majority of its revenue from the Construction Business Division.
94GF Score

Get the complete analysis for TPE:2597

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

NT$163.50
Price
NT$162.91
GF Value