Gemtek Technology Co (TPE:4906) Cyclically Adjusted Book per Share: NT$34.06 (As of Dec. 2025)

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TPE:4906 Gemtek Technology Co Ltd TPE:4906
58 GF Score
Price NT$37.60
GF Value NT$21.11
Valuation Significantly Overvalued
! 7 Warning Signs
View Full Analysis

What is Gemtek Technology Co Cyclically Adjusted Book per Share?

Gemtek Technology Co TPE:4906 -2.97% 58 Cyclically Adjusted Book per Share is NT$34.06 as of Dec. 2025. GuruFocus rates TPE:4906 with a GF Score™ of 58/100 and a GF Value™ of NT$21.11 (Significantly Overvalued). The stock has 7 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.

Gemtek Technology Co's adjusted book value per share for the three months ended in Dec. 2025 was NT$26.686. 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$34.06 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Gemtek Technology Co's average Cyclically Adjusted Book Growth Rate was -0.40% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 0.90% 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 Gemtek Technology Co was 4.90% per year. The lowest was 0.90% per year. And the median was 3.00% per year.

As of today (2026-07-14), Gemtek Technology Co's current stock price is NT$37.60. Gemtek Technology Co's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was NT$34.06. Gemtek Technology Co's Cyclically Adjusted PB Ratio of today is 1.10.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Gemtek Technology Co was 1.46. The lowest was 0.55. And the median was 0.92.


Gemtek Technology Co  (TPE:4906) 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.

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

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=37.60/34.06
=1.10

* 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 Gemtek Technology Co was 1.46. The lowest was 0.55. And the median was 0.92.


Be Aware

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


Gemtek Technology Co Cyclically Adjusted Book per Share Related Terms


Gemtek Technology Co Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Gemtek 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.

Gemtek Technology Co Cyclically Adjusted Book per Share Chart

Gemtek 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 31.30 33.19 33.80 34.21 34.06

Gemtek 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 34.21 34.46 34.49 34.43 34.06

TPE:4906 vs CSCO, CIEN, MSI: Cyclically Adjusted Book per Share Comparison

For the Communication Equipment subindustry, Gemtek 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.


Gemtek Technology Co Cyclically Adjusted PB Ratio vs Hardware Industry

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

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


TPE:4906
58GF Score
Gemtek Technology Co Ltd TPE:4906
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Gemtek 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, Gemtek 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)
=26.686/324.0540*324.0540
=26.686

Current CPI (Dec. 2025) = 324.0540.

Gemtek Technology Co Quarterly Data

Book Value per Share CPI Adj_Book
201603 28.246 238.132 38.438
201606 27.923 241.018 37.543
201609 27.796 241.428 37.309
201612 28.160 241.432 37.797
201703 27.671 243.801 36.780
201706 26.403 244.955 34.929
201709 31.445 246.819 41.285
201712 29.599 246.524 38.908
201803 31.253 249.554 40.583
201806 27.150 251.989 34.914
201809 25.883 252.439 33.226
201812 24.499 251.233 31.600
201903 24.205 254.202 30.856
201906 23.678 256.143 29.956
201909 23.891 256.759 30.153
201912 23.586 256.974 29.743
202003 22.366 258.115 28.080
202006 22.450 257.797 28.220
202009 25.780 260.280 32.097
202012 26.242 260.474 32.648
202103 30.337 264.877 37.115
202106 32.209 271.696 38.416
202109 29.361 274.310 34.685
202112 31.929 278.802 37.111
202203 35.392 287.504 39.891
202206 34.058 296.311 37.247
202209 36.069 296.808 39.380
202212 33.126 296.797 36.168
202303 34.055 301.836 36.562
202306 31.961 305.109 33.946
202309 33.029 307.789 34.774
202312 32.089 306.746 33.900
202403 32.799 312.332 34.030
202406 31.695 314.175 32.692
202409 30.796 315.301 31.651
202412 29.772 315.605 30.569
202503 29.342 319.799 29.732
202506 26.047 322.561 26.168
202509 26.601 324.800 26.540
202512 26.686 324.054 26.686

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$34.06 mean?
Gemtek Technology Co (TPE:4906) has a Cyclically Adjusted Book per Share of NT$34.06 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 Gemtek Technology Co and its competitors.
Is Gemtek Technology Co's Cyclically Adjusted Book per Share too high?
Gemtek Technology Co's current Cyclically Adjusted Book per Share is NT$34.06. Overall, Gemtek Technology Co has a GF Score™ of 58/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Gemtek Technology Co's Cyclically Adjusted Book per Share compare to CSCO and CIEN?
Gemtek Technology Co's Cyclically Adjusted Book per Share of NT$34.06 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 Gemtek Technology Co and its competitors. Gemtek Technology Co's current Cyclically Adjusted Book per Share is NT$34.06. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Gemtek Technology Co stock overvalued right now?
Based on GuruFocus' analysis, Gemtek Technology Co (TPE:4906) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$21.11, compared to a current price of NT$37.60 — trading 78.1% above its estimated fair value. The current Cyclically Adjusted Book per Share is NT$34.06. Gemtek Technology Co's overall GF Score™ is 58/100 with 7 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 Gemtek Technology Co (TPE:4906), the current Cyclically Adjusted Book per Share is NT$34.06 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 Gemtek Technology Co (TPE:4906) Overvalued in 2026?

Based on GuruFocus' analysis, Gemtek Technology Co stock appears to be overvalued. The current stock price of NT$37.60 is trading 78.1% above its estimated GF Value™ of NT$21.11. GuruFocus considers Gemtek Technology Co to be Significantly Overvalued.

Key valuation signals for TPE:4906:

  • Cyclically Adjusted Book per Share: NT$34.06
  • GF Value™: NT$21.11 vs. price of NT$37.60 (78.1% above fair value)
  • GF Score™: 58/100 with 7 warning signs

No single metric tells the full story. See the TPE:4906 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Gemtek Technology Co Business Description

Address No.15-1, Zhonghua Road, Hsinchu Industrial Park, Hukuo Township, Hsinchu County, Hsinchu, TWN, 30352
Gemtek Technology Co Ltd is engaged in the research, development, manufacturing, purchasing, sales, import and export of electronic components, semi-finished products, finished products, computer software, hardware and peripheral equipment. It operates in single segment of the Wireless Communication Products Segment. Its solutions include 5G Total Solution, Fixed Line Broadband, WiFi Home Solution, and (Joint Design and Manufacturing) and CM (Contract Manufacturing).
58GF Score

Get the complete analysis for TPE:4906

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

NT$37.60
Price
NT$21.11
GF Value