Etron Technology (ROCO:5351) Cyclically Adjusted Book per Share: NT$15.17 (As of Dec. 2025)

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ROCO:5351 Etron Technology Inc ROCO:5351
38 GF Score
Price NT$84.80
GF Value NT$42.03
Valuation Significantly Overvalued
! 2 Warning Signs
View Full Analysis

What is Etron Technology Cyclically Adjusted Book per Share?

Etron Technology ROCO:5351 -3.42% 38 Cyclically Adjusted Book per Share is NT$15.17 as of Dec. 2025. GuruFocus rates ROCO:5351 with a GF Score™ of 38/100 and a GF Value™ of NT$42.03 (Significantly Overvalued). The stock has 2 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.

Etron Technology's adjusted book value per share for the three months ended in Dec. 2025 was NT$12.013. 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$15.17 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Etron Technology's average Cyclically Adjusted Book Growth Rate was -5.80% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was -4.40% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was -2.50% 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 Etron Technology was -0.80% per year. The lowest was -4.40% per year. And the median was -1.80% per year.

As of today (2026-07-26), Etron Technology's current stock price is NT$84.80. Etron Technology's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was NT$15.17. Etron Technology's Cyclically Adjusted PB Ratio of today is 5.59.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Etron Technology was 6.47. The lowest was 0.43. And the median was 2.35.


Etron Technology  (ROCO:5351) 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.

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

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=84.80/15.17
=5.59

* 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 Etron Technology was 6.47. The lowest was 0.43. And the median was 2.35.


Be Aware

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


Etron Technology Cyclically Adjusted Book per Share Related Terms


Etron Technology Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Etron Technology'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.

Etron Technology Cyclically Adjusted Book per Share Chart

Etron Technology 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 17.08 17.37 16.92 16.11 15.17

Etron Technology 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 16.11 15.98 15.77 15.53 15.17

ROCO:5351 vs NVDA, AVGO, MU: Cyclically Adjusted Book per Share Comparison

For the Semiconductors subindustry, Etron Technology'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.


Etron Technology Cyclically Adjusted PB Ratio vs Semiconductors Industry

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

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


ROCO:5351
38GF Score
Etron Technology Inc ROCO:5351
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Etron Technology 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, Etron Technology'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)
=12.013/324.0540*324.0540
=12.013

Current CPI (Dec. 2025) = 324.0540.

Etron Technology Quarterly Data

Book Value per Share CPI Adj_Book
201603 17.774 238.132 24.187
201606 17.468 241.018 23.486
201609 16.828 241.428 22.587
201612 16.403 241.432 22.016
201703 15.289 243.801 20.322
201706 14.795 244.955 19.572
201709 14.416 246.819 18.927
201712 14.139 246.524 18.586
201803 13.455 249.554 17.472
201806 13.274 251.989 17.070
201809 12.826 252.439 16.465
201812 11.262 251.233 14.526
201903 10.521 254.202 13.412
201906 10.261 256.143 12.981
201909 9.896 256.759 12.490
201912 9.443 256.974 11.908
202003 9.127 258.115 11.459
202006 8.981 257.797 11.289
202009 9.040 260.280 11.255
202012 9.946 260.474 12.374
202103 10.474 264.877 12.814
202106 10.925 271.696 13.030
202109 12.745 274.310 15.056
202112 14.176 278.802 16.477
202203 15.131 287.504 17.055
202206 15.035 296.311 16.443
202209 15.336 296.808 16.744
202212 14.285 296.797 15.597
202303 13.702 301.836 14.711
202306 13.325 305.109 14.152
202309 12.534 307.789 13.196
202312 11.649 306.746 12.306
202403 11.170 312.332 11.589
202406 10.671 314.175 11.007
202409 13.270 315.301 13.638
202412 12.794 315.605 13.137
202503 12.386 319.799 12.551
202506 11.504 322.561 11.557
202509 11.218 324.800 11.192
202512 12.013 324.054 12.013

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$15.17 mean?
Etron Technology (ROCO:5351) has a Cyclically Adjusted Book per Share of NT$15.17 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 Etron Technology and its competitors.
Is Etron Technology's Cyclically Adjusted Book per Share too high?
Etron Technology's current Cyclically Adjusted Book per Share is NT$15.17. Overall, Etron Technology has a GF Score™ of 38/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Etron Technology's Cyclically Adjusted Book per Share compare to NVDA and AVGO?
Etron Technology's Cyclically Adjusted Book per Share of NT$15.17 can be compared against companies in the Semiconductors 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 Semiconductors company?
A good Cyclically Adjusted Book per Share depends on the Semiconductors 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 Etron Technology and its competitors. Etron Technology's current Cyclically Adjusted Book per Share is NT$15.17. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Etron Technology stock overvalued right now?
Based on GuruFocus' analysis, Etron Technology (ROCO:5351) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$42.03, compared to a current price of NT$84.80 — trading 101.8% above its estimated fair value. The current Cyclically Adjusted Book per Share is NT$15.17. Etron Technology's overall GF Score™ is 38/100 with 2 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 Etron Technology (ROCO:5351), the current Cyclically Adjusted Book per Share is NT$15.17 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 Etron Technology (ROCO:5351) Overvalued in 2026?

Based on GuruFocus' analysis, Etron Technology stock appears to be overvalued. The current stock price of NT$84.80 is trading 101.8% above its estimated GF Value™ of NT$42.03. GuruFocus considers Etron Technology to be Significantly Overvalued.

Key valuation signals for ROCO:5351:

  • Cyclically Adjusted Book per Share: NT$15.17
  • GF Value™: NT$42.03 vs. price of NT$84.80 (101.8% above fair value)
  • GF Score™: 38/100 with 2 warning signs

No single metric tells the full story. See the ROCO:5351 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Etron Technology Business Description

Address No. 6 Technology Road 5, Hsinchu Science Park, Hsinchu, TWN, 30078
Etron Technology Inc is engaged in the manufacturing and design of various integrated circuits. The Company is mainly engaged in the design, manufacturing, and sale of niche memory chips. Its product portfolio consists of Memory ICs, which include Commercial DRAM, Industrial DRAM, Automotive DRAM, Known Good Die, DRAM, and Flash; and Logic ICs, which include USB and 3D Sensing. Geographically, the company operates in Taiwan, Asia, and other countries. The majority of its revenue is generated from the Asia region.
38GF Score

Get the complete analysis for ROCO:5351

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

NT$84.80
Price
NT$42.03
GF Value