Eris Technology (ROCO:3675) Cyclically Adjusted Book per Share: NT$31.31 (As of Dec. 2025)

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ROCO:3675 Eris Technology Corp ROCO:3675
85 GF Score
Price NT$332.00
GF Value NT$285.83
Valuation Modestly Overvalued
! 10 Warning Signs
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What is Eris Technology Cyclically Adjusted Book per Share?

Eris Technology ROCO:3675 -6.87% 85 Cyclically Adjusted Book per Share is NT$31.31 as of Dec. 2025. GuruFocus rates ROCO:3675 with a GF Score™ of 85/100 and a GF Value™ of NT$285.83 (Modestly Overvalued). 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.

Eris Technology's adjusted book value per share for the three months ended in Dec. 2025 was NT$46.676. 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$31.31 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Eris Technology's average Cyclically Adjusted Book Growth Rate was 10.80% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 10.70% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 10.10% 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 Eris Technology was 10.70% per year. The lowest was 9.00% per year. And the median was 10.10% per year.

As of today (2026-07-15), Eris Technology's current stock price is NT$332.00. Eris Technology's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was NT$31.31. Eris Technology's Cyclically Adjusted PB Ratio of today is 10.60.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Eris Technology was 14.29. The lowest was 2.75. And the median was 8.22.


Eris Technology  (ROCO:3675) 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.

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

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=332.00/31.31
=10.60

* 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 Eris Technology was 14.29. The lowest was 2.75. And the median was 8.22.


Be Aware

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


Eris Technology Cyclically Adjusted Book per Share Related Terms


Eris Technology Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Eris 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.

Eris Technology Cyclically Adjusted Book per Share Chart

Eris 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 21.18 23.11 25.10 28.25 31.31

Eris 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 28.25 29.38 30.14 30.86 31.31

ROCO:3675 vs APH, GLW: Cyclically Adjusted Book per Share Comparison

For the Electronic Components subindustry, Eris 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.


Eris Technology Cyclically Adjusted PB Ratio vs Hardware Industry

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

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


ROCO:3675
85GF Score
Eris Technology Corp ROCO:3675
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Eris 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, Eris 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)
=46.676/324.0540*324.0540
=46.676

Current CPI (Dec. 2025) = 324.0540.

Eris Technology Quarterly Data

Book Value per Share CPI Adj_Book
201603 19.098 238.132 25.989
201606 19.070 241.018 25.640
201609 19.509 241.428 26.186
201612 20.093 241.432 26.969
201703 20.589 243.801 27.366
201706 18.366 244.955 24.297
201709 19.054 246.819 25.016
201712 19.686 246.524 25.877
201803 19.958 249.554 25.916
201806 18.996 251.989 24.429
201809 19.677 252.439 25.259
201812 20.144 251.233 25.983
201903 20.518 254.202 26.156
201906 19.359 256.143 24.492
201909 19.929 256.759 25.152
201912 20.383 256.974 25.704
202003 19.620 258.115 24.632
202006 19.178 257.797 24.107
202009 19.562 260.280 24.355
202012 19.896 260.474 24.752
202103 20.780 264.877 25.423
202106 20.679 271.696 24.664
202109 22.604 274.310 26.703
202112 24.568 278.802 28.556
202203 26.735 287.504 30.134
202206 24.840 296.311 27.166
202209 27.227 296.808 29.726
202212 29.181 296.797 31.861
202303 30.670 301.836 32.928
202306 27.886 305.109 29.618
202309 29.663 307.789 31.231
202312 43.580 306.746 46.039
202403 32.995 312.332 34.233
202406 47.848 314.175 49.353
202409 50.463 315.301 51.864
202412 52.309 315.605 53.709
202503 53.683 319.799 54.397
202506 44.368 322.561 44.573
202509 45.472 324.800 45.368
202512 46.676 324.054 46.676

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$31.31 mean?
Eris Technology (ROCO:3675) has a Cyclically Adjusted Book per Share of NT$31.31 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 Eris Technology and its competitors.
Is Eris Technology's Cyclically Adjusted Book per Share too high?
Eris Technology's current Cyclically Adjusted Book per Share is NT$31.31. Overall, Eris Technology has a GF Score™ of 85/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Eris Technology's Cyclically Adjusted Book per Share compare to APH and GLW?
Eris Technology's Cyclically Adjusted Book per Share of NT$31.31 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 Eris Technology and its competitors. Eris Technology's current Cyclically Adjusted Book per Share is NT$31.31. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Eris Technology stock overvalued right now?
Based on GuruFocus' analysis, Eris Technology (ROCO:3675) is currently considered Modestly Overvalued. The stock's GF Value™ is NT$285.83, compared to a current price of NT$332.00 — trading 16.2% above its estimated fair value. The current Cyclically Adjusted Book per Share is NT$31.31. Eris Technology's overall GF Score™ is 85/100 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 Eris Technology (ROCO:3675), the current Cyclically Adjusted Book per Share is NT$31.31 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 Eris Technology (ROCO:3675) Overvalued in 2026?

Based on GuruFocus' analysis, Eris Technology stock appears to be overvalued. The current stock price of NT$332.00 is trading 16.2% above its estimated GF Value™ of NT$285.83. GuruFocus considers Eris Technology to be Modestly Overvalued.

Key valuation signals for ROCO:3675:

  • Cyclically Adjusted Book per Share: NT$31.31
  • GF Value™: NT$285.83 vs. price of NT$332.00 (16.2% above fair value)
  • GF Score™: 85/100 with 10 warning signs

No single metric tells the full story. See the ROCO:3675 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Eris Technology Business Description

Address Section 3, Beishen Road, 222 6th Floor, No. 17, Lane 155, Shenkeng District, New Taipei City, TWN, 22203
Eris Technology Corp manufactures tests and sells rectifier diodes, wafers and light-emitting diodes. The Company mainly manufactures tests and sells rectifier diodes, wafers, and a light-emitting diode. Its products include Schottky Diodes, TVS Diodes, Zener Diodes, Bridge Diodes, Wafers, LEDs, and relevant devices. It operates in two departments. Eris Technology and Jie Cheng - mainly manufacturing and selling in diodes, Yea Shin - mainly manufacturing and selling in wafers and SeCos - mainly R&D, design and sales of diodes, ICs, heat sinks and chips. The majority is from Eris Technology and Jie Cheng. Geographically, it operates in Taiwan, Asia, Europe, North USA, and Australia, out of which the majority is from Taiwan.
85GF Score

Get the complete analysis for ROCO:3675

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

NT$332.00
Price
NT$285.83
GF Value