RoyalTek Co (ROCO:3306) Cyclically Adjusted Book per Share: NT$43.17 (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.

ROCO:3306 RoyalTek Co Ltd ROCO:3306
67 GF Score
Price NT$45.90
GF Value NT$46.68
Valuation Fairly Valued
! 5 Warning Signs
View Full Analysis

What is RoyalTek Co Cyclically Adjusted Book per Share?

RoyalTek Co ROCO:3306 -3.67% 67 Cyclically Adjusted Book per Share is NT$43.17 as of Dec. 2025. GuruFocus rates ROCO:3306 with a GF Score™ of 67/100 and a GF Value™ of NT$46.68 (Fairly Valued). 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.

RoyalTek Co's adjusted book value per share for the three months ended in Dec. 2025 was NT$65.509. 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$43.17 for the trailing ten years ended in Dec. 2025.

During the past 12 months, RoyalTek Co's average Cyclically Adjusted Book Growth Rate was 8.70% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 8.10% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 6.90% 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 RoyalTek Co was 8.10% per year. The lowest was 3.90% per year. And the median was 6.00% per year.

As of today (2026-07-15), RoyalTek Co's current stock price is NT$45.90. RoyalTek Co's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was NT$43.17. RoyalTek Co's Cyclically Adjusted PB Ratio of today is 1.06.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of RoyalTek Co was 1.96. The lowest was 0.48. And the median was 0.88.


RoyalTek Co  (ROCO:3306) 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.

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

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=45.90/43.17
=1.06

* 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 RoyalTek Co was 1.96. The lowest was 0.48. And the median was 0.88.


Be Aware

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


RoyalTek Co Cyclically Adjusted Book per Share Related Terms


RoyalTek Co Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for RoyalTek 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.

RoyalTek Co Cyclically Adjusted Book per Share Chart

RoyalTek 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 32.92 34.20 36.22 39.70 43.17

RoyalTek 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 39.70 40.55 41.52 42.56 43.17

ROCO:3306 vs COHR, KEYS, GRMN: Cyclically Adjusted Book per Share Comparison

For the Scientific & Technical Instruments subindustry, RoyalTek 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.


RoyalTek Co Cyclically Adjusted PB Ratio vs Hardware Industry

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

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


ROCO:3306
67GF Score
RoyalTek Co Ltd ROCO:3306
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

RoyalTek 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, RoyalTek 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)
=65.509/324.0540*324.0540
=65.509

Current CPI (Dec. 2025) = 324.0540.

RoyalTek Co Quarterly Data

Book Value per Share CPI Adj_Book
201603 27.934 238.132 38.013
201606 28.307 241.018 38.059
201609 29.083 241.428 39.036
201612 27.704 241.432 37.185
201703 27.748 243.801 36.882
201706 28.724 244.955 37.999
201709 28.152 246.819 36.961
201712 26.526 246.524 34.868
201803 26.126 249.554 33.925
201806 25.391 251.989 32.652
201809 25.311 252.439 32.492
201812 24.635 251.233 31.776
201903 25.835 254.202 32.934
201906 26.900 256.143 34.032
201909 26.483 256.759 33.424
201912 27.767 256.974 35.015
202003 26.627 258.115 33.429
202006 28.374 257.797 35.666
202009 29.060 260.280 36.180
202012 29.935 260.474 37.242
202103 32.933 264.877 40.291
202106 32.090 271.696 38.274
202109 30.089 274.310 35.545
202112 33.437 278.802 38.864
202203 33.098 287.504 37.306
202206 30.937 296.311 33.834
202209 30.242 296.808 33.018
202212 29.092 296.797 31.764
202303 32.040 301.836 34.398
202306 42.941 305.109 45.607
202309 57.122 307.789 60.141
202312 55.484 306.746 58.615
202403 66.934 312.332 69.446
202406 70.294 314.175 72.504
202409 63.133 315.301 64.886
202412 67.227 315.605 69.027
202503 55.154 319.799 55.888
202506 65.548 322.561 65.851
202509 68.385 324.800 68.228
202512 65.509 324.054 65.509

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$43.17 mean?
RoyalTek Co (ROCO:3306) has a Cyclically Adjusted Book per Share of NT$43.17 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 RoyalTek Co and its competitors.
Is RoyalTek Co's Cyclically Adjusted Book per Share too high?
RoyalTek Co's current Cyclically Adjusted Book per Share is NT$43.17. Overall, RoyalTek Co has a GF Score™ of 67/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does RoyalTek Co's Cyclically Adjusted Book per Share compare to COHR and KEYS?
RoyalTek Co's Cyclically Adjusted Book per Share of NT$43.17 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 RoyalTek Co and its competitors. RoyalTek Co's current Cyclically Adjusted Book per Share is NT$43.17. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is RoyalTek Co stock overvalued right now?
Based on GuruFocus' analysis, RoyalTek Co (ROCO:3306) is currently considered Fairly Valued. The stock's GF Value™ is NT$46.68, compared to a current price of NT$45.90 — trading 1.7% below its estimated fair value. The current Cyclically Adjusted Book per Share is NT$43.17. RoyalTek Co's overall GF Score™ is 67/100 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 RoyalTek Co (ROCO:3306), the current Cyclically Adjusted Book per Share is NT$43.17 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 RoyalTek Co (ROCO:3306) Overvalued in 2026?

Based on GuruFocus' analysis, RoyalTek Co stock appears to be undervalued. The current stock price of NT$45.90 is trading 1.7% below its estimated GF Value™ of NT$46.68. GuruFocus considers RoyalTek Co to be Fairly Valued.

Key valuation signals for ROCO:3306:

  • Cyclically Adjusted Book per Share: NT$43.17
  • GF Value™: NT$46.68 vs. price of NT$45.90 (1.7% below fair value)
  • GF Score™: 67/100 with 5 warning signs

No single metric tells the full story. See the ROCO:3306 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


RoyalTek Co Business Description

Address 4F, No 188 Wen Hwa 2nd Road, 8th Floor, Kuei Shan, Taoyuan, TWN
RoyalTek Co Ltd is a Taiwan-based company engages in the production and distribution of global positioning system (GPS) products. It offers audio video navigation system (AVN), portable navigation device (PND), advanced driving assistance system (ADAS), driving video recorder (DVR), electronic accessories for automobiles and engine board for GPS.
67GF Score

Get the complete analysis for ROCO:3306

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

NT$45.90
Price
NT$46.68
GF Value