LuxNet (ROCO:4979) Cyclically Adjusted Book per Share: NT$18.77 (As of Dec. 2025)

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Director of Data and Quant Analytics at GuruFocus
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Founder & CEO of GuruFocus
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ROCO:4979 LuxNet Corp ROCO:4979
61 GF Score
Price NT$410.00
GF Value NT$261.95
Valuation Significantly Overvalued
! 1 Warning Sign
View Full Analysis

What is LuxNet Cyclically Adjusted Book per Share?

LuxNet ROCO:4979 +1.74% 61 Cyclically Adjusted Book per Share is NT$18.77 as of Dec. 2025. GuruFocus rates ROCO:4979 with a GF Score™ of 61/100 and a GF Value™ of NT$261.95 (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.

LuxNet's adjusted book value per share for the three months ended in Dec. 2025 was NT$28.254. 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$18.77 for the trailing ten years ended in Dec. 2025.

During the past 12 months, LuxNet'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 0.40% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 1.90% 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 LuxNet was 3.00% per year. The lowest was 0.40% per year. And the median was 1.70% per year.

As of today (2026-07-16), LuxNet's current stock price is NT$410.00. LuxNet's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was NT$18.77. LuxNet's Cyclically Adjusted PB Ratio of today is 21.84.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of LuxNet was 35.16. The lowest was 0.72. And the median was 3.11.


LuxNet  (ROCO:4979) 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.

LuxNet's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=410.00/18.77
=21.84

* 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 LuxNet was 35.16. The lowest was 0.72. And the median was 3.11.


Be Aware

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


LuxNet Cyclically Adjusted Book per Share Related Terms


LuxNet Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for LuxNet'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.

LuxNet Cyclically Adjusted Book per Share Chart

LuxNet 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 17.91 18.52 18.47 18.85 18.77

LuxNet 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 18.85 19.01 19.01 19.00 18.77

ROCO:4979 vs NVDA, AVGO, MU: Cyclically Adjusted Book per Share Comparison

For the Semiconductors subindustry, LuxNet'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.


LuxNet Cyclically Adjusted PB Ratio vs Semiconductors Industry

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

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


ROCO:4979
61GF Score
LuxNet Corp ROCO:4979
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

LuxNet 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, LuxNet'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)
=28.254/324.0540*324.0540
=28.254

Current CPI (Dec. 2025) = 324.0540.

LuxNet Quarterly Data

Book Value per Share CPI Adj_Book
201603 27.275 238.132 37.116
201606 23.604 241.018 31.736
201609 22.269 241.428 29.890
201612 21.318 241.432 28.613
201703 19.307 243.801 25.662
201706 19.572 244.955 25.892
201709 18.259 246.819 23.973
201712 15.855 246.524 20.841
201803 16.310 249.554 21.179
201806 14.698 251.989 18.901
201809 13.942 252.439 17.897
201812 10.790 251.233 13.918
201903 10.569 254.202 13.473
201906 10.091 256.143 12.766
201909 9.773 256.759 12.334
201912 10.724 256.974 13.523
202003 10.242 258.115 12.858
202006 10.531 257.797 13.238
202009 10.160 260.280 12.649
202012 11.471 260.474 14.271
202103 10.443 264.877 12.776
202106 11.384 271.696 13.578
202109 10.736 274.310 12.683
202112 9.996 278.802 11.618
202203 9.243 287.504 10.418
202206 9.868 296.311 10.792
202209 10.152 296.808 11.084
202212 10.611 296.797 11.585
202303 11.210 301.836 12.035
202306 11.835 305.109 12.570
202309 13.020 307.789 13.708
202312 21.556 306.746 22.772
202403 20.381 312.332 21.146
202406 21.635 314.175 22.315
202409 22.515 315.301 23.140
202412 24.128 315.605 24.774
202503 23.915 319.799 24.233
202506 24.486 322.561 24.599
202509 26.172 324.800 26.112
202512 28.254 324.054 28.254

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$18.77 mean?
LuxNet (ROCO:4979) has a Cyclically Adjusted Book per Share of NT$18.77 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 LuxNet and its competitors.
Is LuxNet's Cyclically Adjusted Book per Share too high?
LuxNet's current Cyclically Adjusted Book per Share is NT$18.77. Overall, LuxNet has a GF Score™ of 61/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does LuxNet's Cyclically Adjusted Book per Share compare to NVDA and AVGO?
LuxNet's Cyclically Adjusted Book per Share of NT$18.77 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 LuxNet and its competitors. LuxNet's current Cyclically Adjusted Book per Share is NT$18.77. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is LuxNet stock overvalued right now?
Based on GuruFocus' analysis, LuxNet (ROCO:4979) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$261.95, compared to a current price of NT$410.00 — trading 56.5% above its estimated fair value. The current Cyclically Adjusted Book per Share is NT$18.77. LuxNet's overall GF Score™ is 61/100 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 LuxNet (ROCO:4979), the current Cyclically Adjusted Book per Share is NT$18.77 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 LuxNet (ROCO:4979) Overvalued in 2026?

Based on GuruFocus' analysis, LuxNet stock appears to be overvalued. The current stock price of NT$410.00 is trading 56.5% above its estimated GF Value™ of NT$261.95. GuruFocus considers LuxNet to be Significantly Overvalued.

Key valuation signals for ROCO:4979:

  • Cyclically Adjusted Book per Share: NT$18.77
  • GF Value™: NT$261.95 vs. price of NT$410.00 (56.5% above fair value)
  • GF Score™: 61/100 with 1 warning sign

No single metric tells the full story. See the ROCO:4979 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


LuxNet Business Description

Address No. 6, Hejiang Road, Zhongli District, Taoyuan, TWN, 32061
LuxNet Corp is engaged in the manufacturing, processing and sale of electronic components and active components for optical communication and the retail sale of electronic materials. Its products include CHIP, TO-CAN and OPTICAL SUB-ASSEMBLY, and its main product is active components for optical communication and modules. It also provides OEM services including Contract Manufacturing Service, Module Manufacturing Service and Optical Engine Manufacturing Service. The Group's revenues are mainly from active components for optical communication and are recognized when control of the goods is transferred to the customer. It operates in Taiwan, China, North America and other regions, with North America generating maximum revenue.
61GF Score

Get the complete analysis for ROCO:4979

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

NT$410.00
Price
NT$261.95
GF Value