Grand-Tek Technology Co (ROCO:3684) Cyclically Adjusted Book per Share: NT$20.95 (As of Dec. 2025)

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ROCO:3684 Grand-Tek Technology Co Ltd ROCO:3684
79 GF Score
Price NT$50.60
GF Value NT$55.64
Valuation Fairly Valued
! 1 Warning Sign
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What is Grand-Tek Technology Co Cyclically Adjusted Book per Share?

Grand-Tek Technology Co ROCO:3684 -0.39% 79 Cyclically Adjusted Book per Share is NT$20.95 as of Dec. 2025. GuruFocus rates ROCO:3684 with a GF Score™ of 79/100 and a GF Value™ of NT$55.64 (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.

Grand-Tek Technology Co's adjusted book value per share for the three months ended in Dec. 2025 was NT$23.995. 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$20.95 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Grand-Tek Technology Co's average Cyclically Adjusted Book Growth Rate was 5.20% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 6.10% 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 Grand-Tek Technology Co was 8.10% per year. The lowest was 6.10% per year. And the median was 7.10% per year.

As of today (2026-07-17), Grand-Tek Technology Co's current stock price is NT$50.60. Grand-Tek Technology Co's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was NT$20.95. Grand-Tek Technology Co's Cyclically Adjusted PB Ratio of today is 2.42.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Grand-Tek Technology Co was 3.31. The lowest was 1.98. And the median was 2.45.


Grand-Tek Technology Co  (ROCO:3684) 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.

Grand-Tek Technology Co's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=50.60/20.95
=2.42

* 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 Grand-Tek Technology Co was 3.31. The lowest was 1.98. And the median was 2.45.


Be Aware

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


Grand-Tek Technology Co Cyclically Adjusted Book per Share Related Terms


Grand-Tek Technology Co Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Grand-Tek Technology 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.

Grand-Tek Technology Co Cyclically Adjusted Book per Share Chart

Grand-Tek Technology 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 15.78 17.54 18.80 19.91 20.95

Grand-Tek Technology 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 19.91 20.31 20.62 20.88 20.95

ROCO:3684 vs APH, GLW: Cyclically Adjusted Book per Share Comparison

For the Electronic Components subindustry, Grand-Tek Technology 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.


Grand-Tek Technology Co Cyclically Adjusted PB Ratio vs Hardware Industry

For the Hardware industry and Technology sector, Grand-Tek Technology Co's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where Grand-Tek Technology Co's Cyclically Adjusted PB Ratio falls into.


ROCO:3684
79GF Score
Grand-Tek Technology Co Ltd ROCO:3684
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Grand-Tek Technology 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, Grand-Tek Technology 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)
=23.995/324.0540*324.0540
=23.995

Current CPI (Dec. 2025) = 324.0540.

Grand-Tek Technology Co Quarterly Data

Book Value per Share CPI Adj_Book
201603 14.331 238.132 19.502
201606 13.259 241.018 17.827
201609 13.831 241.428 18.565
201612 14.881 241.432 19.974
201703 15.179 243.801 20.176
201706 14.037 244.955 18.570
201709 14.918 246.819 19.586
201712 15.635 246.524 20.552
201803 15.918 249.554 20.670
201806 14.517 251.989 18.669
201809 14.767 252.439 18.956
201812 14.805 251.233 19.096
201903 15.372 254.202 19.596
201906 14.801 256.143 18.725
201909 16.854 256.759 21.271
201912 17.283 256.974 21.795
202003 17.695 258.115 22.215
202006 16.430 257.797 20.653
202009 16.763 260.280 20.870
202012 17.217 260.474 21.420
202103 17.617 264.877 21.553
202106 18.398 271.696 21.943
202109 18.088 274.310 21.368
202112 19.094 278.802 22.193
202203 19.954 287.504 22.491
202206 18.710 296.311 20.462
202209 20.284 296.808 22.146
202212 20.872 296.797 22.789
202303 21.293 301.836 22.860
202306 19.897 305.109 21.132
202309 20.176 307.789 21.242
202312 20.176 306.746 21.314
202403 20.660 312.332 21.435
202406 20.803 314.175 21.457
202409 21.160 315.301 21.747
202412 22.274 315.605 22.870
202503 22.910 319.799 23.215
202506 20.884 322.561 20.981
202509 22.332 324.800 22.281
202512 23.995 324.054 23.995

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$20.95 mean?
Grand-Tek Technology Co (ROCO:3684) has a Cyclically Adjusted Book per Share of NT$20.95 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 Grand-Tek Technology Co and its competitors.
Is Grand-Tek Technology Co's Cyclically Adjusted Book per Share too high?
Grand-Tek Technology Co's current Cyclically Adjusted Book per Share is NT$20.95. Overall, Grand-Tek Technology Co has a GF Score™ of 79/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Grand-Tek Technology Co's Cyclically Adjusted Book per Share compare to APH and GLW?
Grand-Tek Technology Co's Cyclically Adjusted Book per Share of NT$20.95 can be compared against companies in the Hardware 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 Hardware company?
A good Cyclically Adjusted Book per Share depends on the Hardware 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 Grand-Tek Technology Co and its competitors. Grand-Tek Technology Co's current Cyclically Adjusted Book per Share is NT$20.95. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Grand-Tek Technology Co stock overvalued right now?
Based on GuruFocus' analysis, Grand-Tek Technology Co (ROCO:3684) is currently considered Fairly Valued. The stock's GF Value™ is NT$55.64, compared to a current price of NT$50.60 — trading 9.1% below its estimated fair value. The current Cyclically Adjusted Book per Share is NT$20.95. Grand-Tek Technology Co's overall GF Score™ is 79/100 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 Grand-Tek Technology Co (ROCO:3684), the current Cyclically Adjusted Book per Share is NT$20.95 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 Grand-Tek Technology Co (ROCO:3684) Overvalued in 2026?

Based on GuruFocus' analysis, Grand-Tek Technology Co stock appears to be undervalued. The current stock price of NT$50.60 is trading 9.1% below its estimated GF Value™ of NT$55.64. GuruFocus considers Grand-Tek Technology Co to be Fairly Valued.

Key valuation signals for ROCO:3684:

  • Cyclically Adjusted Book per Share: NT$20.95
  • GF Value™: NT$55.64 vs. price of NT$50.60 (9.1% below fair value)
  • GF Score™: 79/100 with 1 warning sign

No single metric tells the full story. See the ROCO:3684 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Grand-Tek Technology Co Business Description

Address Bao Ciao Road, Sin Dian District, 3rd Floor, No 4, Lane 235, New Taipei City, TWN, 23145
Grand-Tek Technology Co Ltd is an engaged in the design and manufacturing of electronic components. The company provides cable assemblies. Its products include RF and DATA, Outdoor Protection, Outdoor Unit, Telematrics Antenna, and TQSC System Technology.
79GF Score

Get the complete analysis for ROCO:3684

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

NT$50.60
Price
NT$55.64
GF Value