Donpon Precision (ROCO:3290) Cyclically Adjusted Book per Share: NT$25.56 (As of Dec. 2025)

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ROCO:3290 Donpon Precision Inc ROCO:3290
69 GF Score
Price NT$66.90
GF Value NT$61.29
Valuation Fairly Valued
! 10 Warning Signs
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What is Donpon Precision Cyclically Adjusted Book per Share?

Donpon Precision ROCO:3290 +2.61% 69 Cyclically Adjusted Book per Share is NT$25.56 as of Dec. 2025. GuruFocus rates ROCO:3290 with a GF Score™ of 69/100 and a GF Value™ of NT$61.29 (Fairly Valued). The stock has 10 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.

Donpon Precision's adjusted book value per share for the three months ended in Dec. 2025 was NT$24.489. 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$25.56 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Donpon Precision's average Cyclically Adjusted Book Growth Rate was -0.60% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 1.00% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 3.00% 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 Donpon Precision was 4.60% per year. The lowest was 1.00% per year. And the median was 3.65% per year.

As of today (2026-07-14), Donpon Precision's current stock price is NT$66.90. Donpon Precision's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was NT$25.56. Donpon Precision's Cyclically Adjusted PB Ratio of today is 2.62.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Donpon Precision was 2.75. The lowest was 0.72. And the median was 1.39.


Donpon Precision  (ROCO:3290) 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.

Donpon Precision's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=66.90/25.56
=2.62

* 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 Donpon Precision was 2.75. The lowest was 0.72. And the median was 1.39.


Be Aware

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


Donpon Precision Cyclically Adjusted Book per Share Related Terms


Donpon Precision Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Donpon Precision'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.

Donpon Precision Cyclically Adjusted Book per Share Chart

Donpon Precision 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 23.42 24.84 25.32 25.72 25.56

Donpon Precision 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 25.72 25.95 25.90 25.81 25.56

ROCO:3290 vs VRT, BE: Cyclically Adjusted Book per Share Comparison

For the Electrical Equipment & Parts subindustry, Donpon Precision'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.


Donpon Precision Cyclically Adjusted PB Ratio vs Industrial Products Industry

For the Industrial Products industry and Industrials sector, Donpon Precision's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


ROCO:3290
69GF Score
Donpon Precision Inc ROCO:3290
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Donpon Precision 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, Donpon Precision'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)
=24.489/324.0540*324.0540
=24.489

Current CPI (Dec. 2025) = 324.0540.

Donpon Precision Quarterly Data

Book Value per Share CPI Adj_Book
201603 23.160 238.132 31.517
201606 21.019 241.018 28.261
201609 20.296 241.428 27.242
201612 21.334 241.432 28.635
201703 20.215 243.801 26.869
201706 20.152 244.955 26.659
201709 20.521 246.819 26.942
201712 20.658 246.524 27.155
201803 20.557 249.554 26.694
201806 20.207 251.989 25.986
201809 20.796 252.439 26.696
201812 22.114 251.233 28.524
201903 23.195 254.202 29.569
201906 22.001 256.143 27.834
201909 21.200 256.759 26.756
201912 19.810 256.974 24.981
202003 19.381 258.115 24.332
202006 18.733 257.797 23.548
202009 19.646 260.280 24.460
202012 19.956 260.474 24.827
202103 19.816 264.877 24.243
202106 19.693 271.696 23.488
202109 19.899 274.310 23.508
202112 20.583 278.802 23.924
202203 20.916 287.504 23.575
202206 20.341 296.311 22.245
202209 21.674 296.808 23.664
202212 22.412 296.797 24.470
202303 22.689 301.836 24.359
202306 21.874 305.109 23.232
202309 23.557 307.789 24.802
202312 23.864 306.746 25.211
202403 23.460 312.332 24.340
202406 24.652 314.175 25.427
202409 26.116 315.301 26.841
202412 26.252 315.605 26.955
202503 27.098 319.799 27.459
202506 20.227 322.561 20.321
202509 22.238 324.800 22.187
202512 24.489 324.054 24.489

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$25.56 mean?
Donpon Precision (ROCO:3290) has a Cyclically Adjusted Book per Share of NT$25.56 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 Donpon Precision and its competitors.
Is Donpon Precision's Cyclically Adjusted Book per Share too high?
Donpon Precision's current Cyclically Adjusted Book per Share is NT$25.56. Overall, Donpon Precision has a GF Score™ of 69/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Donpon Precision's Cyclically Adjusted Book per Share compare to VRT and BE?
Donpon Precision's Cyclically Adjusted Book per Share of NT$25.56 can be compared against companies in the Industrial Products 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 Industrial Products company?
A good Cyclically Adjusted Book per Share depends on the Industrial Products 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 Donpon Precision and its competitors. Donpon Precision's current Cyclically Adjusted Book per Share is NT$25.56. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Donpon Precision stock overvalued right now?
Based on GuruFocus' analysis, Donpon Precision (ROCO:3290) is currently considered Fairly Valued. The stock's GF Value™ is NT$61.29, compared to a current price of NT$66.90 — trading 9.2% above its estimated fair value. The current Cyclically Adjusted Book per Share is NT$25.56. Donpon Precision's overall GF Score™ is 69/100 with 10 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 Donpon Precision (ROCO:3290), the current Cyclically Adjusted Book per Share is NT$25.56 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 Donpon Precision (ROCO:3290) Overvalued in 2026?

Based on GuruFocus' analysis, Donpon Precision stock appears to be overvalued. The current stock price of NT$66.90 is trading 9.2% above its estimated GF Value™ of NT$61.29. GuruFocus considers Donpon Precision to be Fairly Valued.

Key valuation signals for ROCO:3290:

  • Cyclically Adjusted Book per Share: NT$25.56
  • GF Value™: NT$61.29 vs. price of NT$66.90 (9.2% above fair value)
  • GF Score™: 69/100 with 10 warning signs

No single metric tells the full story. See the ROCO:3290 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Donpon Precision Business Description

Address No. 58, Changxing Road, Section 2, Luzhu District, Taoyuan, TWN, 338020
Donpon Precision Inc engaged in the manufacturing, processing, and trading of plastic products, molds, automobile parts, electronic parts, etc.
69GF Score

Get the complete analysis for ROCO:3290

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

NT$66.90
Price
NT$61.29
GF Value