Truelight (ROCO:3234) Cyclically Adjusted Book per Share: NT$15.87 (As of Dec. 2025)

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ROCO:3234 Truelight Corp ROCO:3234
36 GF Score
Price NT$96.30
GF Value NT$33.55
Valuation Significantly Overvalued
! 2 Warning Signs
View Full Analysis

What is Truelight Cyclically Adjusted Book per Share?

Truelight ROCO:3234 -4.18% 36 Cyclically Adjusted Book per Share is NT$15.87 as of Dec. 2025. GuruFocus rates ROCO:3234 with a GF Score™ of 36/100 and a GF Value™ of NT$33.55 (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.

Truelight's adjusted book value per share for the three months ended in Dec. 2025 was NT$6.686. 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$15.87 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Truelight's average Cyclically Adjusted Book Growth Rate was -7.20% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was -4.00% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was -1.00% 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 Truelight was 1.80% per year. The lowest was -4.00% per year. And the median was 0.55% per year.

As of today (2026-07-21), Truelight's current stock price is NT$96.30. Truelight's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was NT$15.87. Truelight's Cyclically Adjusted PB Ratio of today is 6.07.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Truelight was 9.14. The lowest was 1.03. And the median was 1.97.


Truelight  (ROCO:3234) 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.

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

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=96.30/15.87
=6.07

* 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 Truelight was 9.14. The lowest was 1.03. And the median was 1.97.


Be Aware

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


Truelight Cyclically Adjusted Book per Share Related Terms


Truelight Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Truelight'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.

Truelight Cyclically Adjusted Book per Share Chart

Truelight 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 17.45 17.95 17.63 17.11 15.87

Truelight 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 17.11 17.00 16.83 16.48 15.87

ROCO:3234 vs NVDA, AVGO, MU: Cyclically Adjusted Book per Share Comparison

For the Semiconductors subindustry, Truelight'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.


Truelight Cyclically Adjusted PB Ratio vs Semiconductors Industry

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

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


ROCO:3234
36GF Score
Truelight Corp ROCO:3234
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Truelight 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, Truelight'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)
=6.686/324.0540*324.0540
=6.686

Current CPI (Dec. 2025) = 324.0540.

Truelight Quarterly Data

Book Value per Share CPI Adj_Book
201603 24.057 238.132 32.737
201606 25.040 241.018 33.667
201609 26.357 241.428 35.377
201612 25.704 241.432 34.500
201703 23.701 243.801 31.503
201706 21.340 244.955 28.231
201709 18.887 246.819 24.797
201712 16.860 246.524 22.162
201803 16.088 249.554 20.891
201806 16.057 251.989 20.649
201809 14.980 252.439 19.230
201812 14.239 251.233 18.366
201903 13.418 254.202 17.105
201906 12.538 256.143 15.862
201909 12.383 256.759 15.629
201912 11.018 256.974 13.894
202003 10.791 258.115 13.548
202006 10.988 257.797 13.812
202009 11.276 260.280 14.039
202012 11.133 260.474 13.850
202103 10.720 264.877 13.115
202106 10.342 271.696 12.335
202109 9.987 274.310 11.798
202112 9.653 278.802 11.220
202203 9.698 287.504 10.931
202206 9.747 296.311 10.660
202209 9.800 296.808 10.700
202212 9.428 296.797 10.294
202303 8.591 301.836 9.223
202306 7.817 305.109 8.302
202309 9.482 307.789 9.983
202312 7.619 306.746 8.049
202403 9.972 312.332 10.346
202406 9.507 314.175 9.806
202409 9.026 315.301 9.277
202412 8.586 315.605 8.816
202503 8.682 319.799 8.798
202506 7.536 322.561 7.571
202509 7.107 324.800 7.091
202512 6.686 324.054 6.686

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$15.87 mean?
Truelight (ROCO:3234) has a Cyclically Adjusted Book per Share of NT$15.87 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 Truelight and its competitors.
Is Truelight's Cyclically Adjusted Book per Share too high?
Truelight's current Cyclically Adjusted Book per Share is NT$15.87. Overall, Truelight has a GF Score™ of 36/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Truelight's Cyclically Adjusted Book per Share compare to NVDA and AVGO?
Truelight's Cyclically Adjusted Book per Share of NT$15.87 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 Truelight and its competitors. Truelight's current Cyclically Adjusted Book per Share is NT$15.87. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Truelight stock overvalued right now?
Based on GuruFocus' analysis, Truelight (ROCO:3234) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$33.55, compared to a current price of NT$96.30 — trading 187% above its estimated fair value. The current Cyclically Adjusted Book per Share is NT$15.87. Truelight's overall GF Score™ is 36/100 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 Truelight (ROCO:3234), the current Cyclically Adjusted Book per Share is NT$15.87 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 Truelight (ROCO:3234) Overvalued in 2026?

Based on GuruFocus' analysis, Truelight stock appears to be overvalued. The current stock price of NT$96.30 is trading 187% above its estimated GF Value™ of NT$33.55. GuruFocus considers Truelight to be Significantly Overvalued.

Key valuation signals for ROCO:3234:

  • Cyclically Adjusted Book per Share: NT$15.87
  • GF Value™: NT$33.55 vs. price of NT$96.30 (187% above fair value)
  • GF Score™: 36/100 with 2 warning signs

No single metric tells the full story. See the ROCO:3234 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Truelight Business Description

Address No.21, Prosperity Road 1, Hsinchu Science Park, Hsinchu, TWN, 300091
Truelight Corp engages in the manufacturing and supply of components for the local area networks, storage area network, fiber to the home, and metro area network. The business items of the company are design, research and development, Production, and sales, which are applied to optical fiber communication, mobile communication base station interconnection, cloud data center, 3D Sensing/Near-Field Sensing/Flood Illumination Vertical Cavity Surface Emitting Laser, Edge laser, photodiode, including components, sub-modules, Light engine/AOC and other types of products. The products of the company include VCSEL chips, FP-LD chips, DFB-LD chips, and PIN chips.
36GF Score

Get the complete analysis for ROCO:3234

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

NT$96.30
Price
NT$33.55
GF Value