Ching Chan Optical Technology Co (ROCO:2070) Cyclically Adjusted Book per Share: NT$27.62 (As of Dec. 2025)

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ROCO:2070 Ching Chan Optical Technology Co Ltd ROCO:2070
77 GF Score
Price NT$56.40
GF Value NT$42.20
Valuation Significantly Overvalued
! 1 Warning Sign
View Full Analysis

What is Ching Chan Optical Technology Co Cyclically Adjusted Book per Share?

Ching Chan Optical Technology Co ROCO:2070 +0.53% 77 Cyclically Adjusted Book per Share is NT$27.62 as of Dec. 2025. GuruFocus rates ROCO:2070 with a GF Score™ of 77/100 and a GF Value™ of NT$42.20 (Significantly Overvalued). 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.

Ching Chan Optical Technology Co's adjusted book value per share for the three months ended in Dec. 2025 was NT$25.950. 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$27.62 for the trailing ten years ended in Dec. 2025.

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.

As of today (2026-07-16), Ching Chan Optical Technology Co's current stock price is NT$56.40. Ching Chan Optical Technology Co's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was NT$27.62. Ching Chan Optical Technology Co's Cyclically Adjusted PB Ratio of today is 2.04.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Ching Chan Optical Technology Co was 2.81. The lowest was 1.34. And the median was 1.46.


Ching Chan Optical Technology Co  (ROCO:2070) 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.

Ching Chan Optical Technology Co's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=56.40/27.62
=2.04

* 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 Ching Chan Optical Technology Co was 2.81. The lowest was 1.34. And the median was 1.46.


Be Aware

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


Ching Chan Optical Technology Co Cyclically Adjusted Book per Share Related Terms


Ching Chan Optical Technology Co Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Ching Chan Optical 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.

Ching Chan Optical Technology Co Cyclically Adjusted Book per Share Chart

Ching Chan Optical 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 0.00 0.00 0.00 0.00 27.62

Ching Chan Optical 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 0.00 0.00 27.56 27.68 27.62

ROCO:2070 vs GEV, ETN, PH: Cyclically Adjusted Book per Share Comparison

For the Specialty Industrial Machinery subindustry, Ching Chan Optical 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.


Ching Chan Optical Technology Co Cyclically Adjusted PB Ratio vs Industrial Products Industry

For the Industrial Products industry and Industrials sector, Ching Chan Optical Technology Co's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


ROCO:2070
77GF Score
Ching Chan Optical Technology Co Ltd ROCO:2070
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Ching Chan Optical 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, Ching Chan Optical 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)
=25.95/324.0540*324.0540
=25.950

Current CPI (Dec. 2025) = 324.0540.

Ching Chan Optical Technology Co Quarterly Data

Book Value per Share CPI Adj_Book
201506 20.392 238.638 27.691
201512 21.459 236.525 29.400
201606 23.569 241.018 31.689
201612 22.236 241.432 29.846
201703 0.000 243.801 0.000
201706 21.978 244.955 29.075
201709 0.000 246.819 0.000
201712 24.399 246.524 32.072
201803 25.030 249.554 32.502
201806 23.187 251.989 29.818
201809 23.847 252.439 30.612
201812 25.550 251.233 32.956
201903 26.275 254.202 33.495
201906 24.391 256.143 30.858
201909 24.045 256.759 30.347
201912 23.830 256.974 30.051
202003 23.116 258.115 29.021
202006 20.984 257.797 26.377
202009 21.009 260.280 26.157
202012 21.523 260.474 26.777
202103 21.801 264.877 26.672
202106 22.362 271.696 26.671
202109 21.966 274.310 25.949
202112 23.120 278.802 26.873
202203 24.080 287.504 27.141
202206 22.704 296.311 24.830
202209 23.250 296.808 25.384
202212 23.894 296.797 26.088
202303 22.539 301.836 24.198
202306 22.701 305.109 24.111
202309 23.367 307.789 24.602
202312 24.867 306.746 26.270
202403 23.620 312.332 24.506
202406 24.653 314.175 25.428
202409 24.666 315.301 25.351
202412 25.164 315.605 25.838
202503 24.927 319.799 25.259
202506 24.582 322.561 24.696
202509 24.919 324.800 24.862
202512 25.950 324.054 25.950

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$27.62 mean?
Ching Chan Optical Technology Co (ROCO:2070) has a Cyclically Adjusted Book per Share of NT$27.62 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 Ching Chan Optical Technology Co and its competitors.
Is Ching Chan Optical Technology Co's Cyclically Adjusted Book per Share too high?
Ching Chan Optical Technology Co's current Cyclically Adjusted Book per Share is NT$27.62. Overall, Ching Chan Optical Technology Co has a GF Score™ of 77/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Ching Chan Optical Technology Co's Cyclically Adjusted Book per Share compare to GEV and ETN?
Ching Chan Optical Technology Co's Cyclically Adjusted Book per Share of NT$27.62 can be compared against companies in the Industrial Products 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 an Industrial Products company?
A good Cyclically Adjusted Book per Share depends on the Industrial Products 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 Ching Chan Optical Technology Co and its competitors. Ching Chan Optical Technology Co's current Cyclically Adjusted Book per Share is NT$27.62. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Ching Chan Optical Technology Co stock overvalued right now?
Based on GuruFocus' analysis, Ching Chan Optical Technology Co (ROCO:2070) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$42.20, compared to a current price of NT$56.40 — trading 33.6% above its estimated fair value. The current Cyclically Adjusted Book per Share is NT$27.62. Ching Chan Optical Technology Co's overall GF Score™ is 77/100 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 Ching Chan Optical Technology Co (ROCO:2070), the current Cyclically Adjusted Book per Share is NT$27.62 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 Ching Chan Optical Technology Co (ROCO:2070) Overvalued in 2026?

Based on GuruFocus' analysis, Ching Chan Optical Technology Co stock appears to be overvalued. The current stock price of NT$56.40 is trading 33.6% above its estimated GF Value™ of NT$42.20. GuruFocus considers Ching Chan Optical Technology Co to be Significantly Overvalued.

Key valuation signals for ROCO:2070:

  • Cyclically Adjusted Book per Share: NT$27.62
  • GF Value™: NT$42.20 vs. price of NT$56.40 (33.6% above fair value)
  • GF Score™: 77/100 with 1 warning sign

No single metric tells the full story. See the ROCO:2070 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Ching Chan Optical Technology Co Business Description

Address Number 58, Lane 110, Zhongxiao Street, Hunei District, Kaohsiung, TWN
Ching Chan Optical Technology Co Ltd is engaged in providing screening equipment and other products. The company offers Screening Machine, Forming Machine, Pressure sensor, Intelligent automatic car handling system, and surveillance system among others.
77GF Score

Get the complete analysis for ROCO:2070

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

NT$56.40
Price
NT$42.20
GF Value