Sunflex Technology (ROCO:3390) Cyclically Adjusted Book per Share: NT$20.47 (As of Dec. 2025)

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ROCO:3390 Sunflex Technology Corp ROCO:3390
63 GF Score
Price NT$26.10
GF Value NT$19.94
Valuation Significantly Overvalued
! 5 Warning Signs
View Full Analysis

What is Sunflex Technology Cyclically Adjusted Book per Share?

Sunflex Technology ROCO:3390 +1.95% 63 Cyclically Adjusted Book per Share is NT$20.47 as of Dec. 2025. GuruFocus rates ROCO:3390 with a GF Score™ of 63/100 and a GF Value™ of NT$19.94 (Significantly Overvalued). The stock has 5 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.

Sunflex Technology's adjusted book value per share for the three months ended in Dec. 2025 was NT$17.722. 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$20.47 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Sunflex Technology's average Cyclically Adjusted Book Growth Rate was -1.90% per year. During the past 3 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 Sunflex Technology was 2.10% per year. The lowest was -1.90% per year. And the median was 0.55% per year.

As of today (2026-07-16), Sunflex Technology's current stock price is NT$26.10. Sunflex Technology's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was NT$20.47. Sunflex Technology's Cyclically Adjusted PB Ratio of today is 1.28.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Sunflex Technology was 1.77. The lowest was 0.63. And the median was 0.96.


Sunflex Technology  (ROCO:3390) 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.

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

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=26.10/20.47
=1.28

* 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 Sunflex Technology was 1.77. The lowest was 0.63. And the median was 0.96.


Be Aware

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


Sunflex Technology Cyclically Adjusted Book per Share Related Terms


Sunflex Technology Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Sunflex 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.

Sunflex Technology Cyclically Adjusted Book per Share Chart

Sunflex 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 21.24 21.70 21.28 20.87 20.47

Sunflex 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 20.87 20.90 20.85 20.77 20.47

ROCO:3390 vs APH, GLW: Cyclically Adjusted Book per Share Comparison

For the Electronic Components subindustry, Sunflex 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.


Sunflex Technology Cyclically Adjusted PB Ratio vs Hardware Industry

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

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


ROCO:3390
63GF Score
Sunflex Technology Corp ROCO:3390
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Sunflex 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, Sunflex 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)
=17.722/324.0540*324.0540
=17.722

Current CPI (Dec. 2025) = 324.0540.

Sunflex Technology Quarterly Data

Book Value per Share CPI Adj_Book
201603 19.972 238.132 27.178
201606 19.103 241.018 25.684
201609 18.956 241.428 25.443
201612 19.254 241.432 25.843
201703 18.780 243.801 24.962
201706 18.040 244.955 23.865
201709 18.549 246.819 24.353
201712 18.408 246.524 24.197
201803 18.283 249.554 23.741
201806 17.850 251.989 22.955
201809 18.302 252.439 23.494
201812 18.561 251.233 23.941
201903 18.613 254.202 23.728
201906 17.631 256.143 22.305
201909 17.229 256.759 21.745
201912 16.904 256.974 21.317
202003 16.507 258.115 20.724
202006 15.650 257.797 19.672
202009 15.088 260.280 18.785
202012 14.578 260.474 18.136
202103 14.804 264.877 18.111
202106 15.101 271.696 18.011
202109 15.321 274.310 18.099
202112 15.682 278.802 18.227
202203 15.788 287.504 17.795
202206 15.718 296.311 17.190
202209 16.516 296.808 18.032
202212 16.018 296.797 17.489
202303 16.228 301.836 17.423
202306 15.847 305.109 16.831
202309 16.644 307.789 17.524
202312 16.713 306.746 17.656
202403 17.269 312.332 17.917
202406 17.726 314.175 18.283
202409 17.483 315.301 17.968
202412 17.649 315.605 18.121
202503 19.053 319.799 19.307
202506 17.100 322.561 17.179
202509 18.005 324.800 17.964
202512 17.722 324.054 17.722

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$20.47 mean?
Sunflex Technology (ROCO:3390) has a Cyclically Adjusted Book per Share of NT$20.47 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 Sunflex Technology and its competitors.
Is Sunflex Technology's Cyclically Adjusted Book per Share too high?
Sunflex Technology's current Cyclically Adjusted Book per Share is NT$20.47. Overall, Sunflex Technology has a GF Score™ of 63/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Sunflex Technology's Cyclically Adjusted Book per Share compare to APH and GLW?
Sunflex Technology's Cyclically Adjusted Book per Share of NT$20.47 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 Sunflex Technology and its competitors. Sunflex Technology's current Cyclically Adjusted Book per Share is NT$20.47. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Sunflex Technology stock overvalued right now?
Based on GuruFocus' analysis, Sunflex Technology (ROCO:3390) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$19.94, compared to a current price of NT$26.10 — trading 30.9% above its estimated fair value. The current Cyclically Adjusted Book per Share is NT$20.47. Sunflex Technology's overall GF Score™ is 63/100 with 5 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 Sunflex Technology (ROCO:3390), the current Cyclically Adjusted Book per Share is NT$20.47 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 Sunflex Technology (ROCO:3390) Overvalued in 2026?

Based on GuruFocus' analysis, Sunflex Technology stock appears to be overvalued. The current stock price of NT$26.10 is trading 30.9% above its estimated GF Value™ of NT$19.94. GuruFocus considers Sunflex Technology to be Significantly Overvalued.

Key valuation signals for ROCO:3390:

  • Cyclically Adjusted Book per Share: NT$20.47
  • GF Value™: NT$19.94 vs. price of NT$26.10 (30.9% above fair value)
  • GF Score™: 63/100 with 5 warning signs

No single metric tells the full story. See the ROCO:3390 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Sunflex Technology Business Description

Address No. 522, Nanshang Road, Guishan District, Taoyuan, TWN, 333014
Sunflex Technology Corp is the manufacture of electronic components and international trades. It provides single and double-sided flexible PCBs that are applied in the manufacturing of mobile phones, notebook computers, disk players, and LCDs. The company applications include touch panels, liquid crystal module, computer accessories, and a light bar. The Company's operating revenue is mainly derived from the production and sales of customized flexible circuit boards.
63GF Score

Get the complete analysis for ROCO:3390

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

NT$26.10
Price
NT$19.94
GF Value