Aurona Industries (ROCO:8074) Cyclically Adjusted Book per Share: NT$20.91 (As of Dec. 2025)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

ROCO:8074 Aurona Industries Inc ROCO:8074
49 GF Score
Price NT$61.50
GF Value NT$23.01
Valuation Significantly Overvalued
! 5 Warning Signs
View Full Analysis

What is Aurona Industries Cyclically Adjusted Book per Share?

Aurona Industries ROCO:8074 +1.49% 49 Cyclically Adjusted Book per Share is NT$20.91 as of Dec. 2025. GuruFocus rates ROCO:8074 with a GF Score™ of 49/100 and a GF Value™ of NT$23.01 (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.

Aurona Industries's adjusted book value per share for the three months ended in Dec. 2025 was NT$19.635. 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$20.91 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Aurona Industries's average Cyclically Adjusted Book Growth Rate was 1.00% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 2.00% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 3.70% 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 Aurona Industries was 5.30% per year. The lowest was 2.00% per year. And the median was 4.20% per year.

As of today (2026-07-16), Aurona Industries's current stock price is NT$61.50. Aurona Industries's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was NT$20.91. Aurona Industries's Cyclically Adjusted PB Ratio of today is 2.94.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Aurona Industries was 3.93. The lowest was 0.78. And the median was 1.05.


Aurona Industries  (ROCO:8074) 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.

Aurona Industries's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=61.50/20.91
=2.94

* 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 Aurona Industries was 3.93. The lowest was 0.78. And the median was 1.05.


Be Aware

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


Aurona Industries Cyclically Adjusted Book per Share Related Terms


Aurona Industries Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Aurona Industries'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.

Aurona Industries Cyclically Adjusted Book per Share Chart

Aurona Industries 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 18.60 19.73 20.27 20.70 20.91

Aurona Industries 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 20.70 20.88 20.98 21.04 20.91

ROCO:8074 vs APH, GLW: Cyclically Adjusted Book per Share Comparison

For the Electronic Components subindustry, Aurona Industries'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.


Aurona Industries Cyclically Adjusted PB Ratio vs Hardware Industry

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

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


ROCO:8074
49GF Score
Aurona Industries Inc ROCO:8074
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Aurona Industries 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, Aurona Industries'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)
=19.635/324.0540*324.0540
=19.635

Current CPI (Dec. 2025) = 324.0540.

Aurona Industries Quarterly Data

Book Value per Share CPI Adj_Book
201603 17.631 238.132 23.993
201606 16.604 241.018 22.324
201609 19.947 241.428 26.774
201612 17.806 241.432 23.900
201703 19.037 243.801 25.303
201706 16.821 244.955 22.253
201709 17.739 246.819 23.290
201712 18.051 246.524 23.728
201803 18.587 249.554 24.136
201806 17.426 251.989 22.410
201809 17.673 252.439 22.687
201812 17.645 251.233 22.759
201903 17.910 254.202 22.831
201906 17.000 256.143 21.507
201909 16.843 256.759 21.257
201912 16.839 256.974 21.235
202003 16.925 258.115 21.249
202006 16.002 257.797 20.115
202009 16.541 260.280 20.594
202012 16.873 260.474 20.992
202103 16.176 264.877 19.790
202106 16.430 271.696 19.596
202109 16.705 274.310 19.734
202112 16.954 278.802 19.706
202203 16.298 287.504 18.370
202206 16.202 296.311 17.719
202209 16.582 296.808 18.104
202212 19.332 296.797 21.107
202303 18.070 301.836 19.400
202306 18.074 305.109 19.196
202309 18.567 307.789 19.548
202312 18.516 306.746 19.561
202403 17.954 312.332 18.628
202406 18.292 314.175 18.867
202409 18.682 315.301 19.201
202412 18.986 315.605 19.494
202503 18.226 319.799 18.469
202506 18.145 322.561 18.229
202509 18.907 324.800 18.864
202512 19.635 324.054 19.635

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$20.91 mean?
Aurona Industries (ROCO:8074) has a Cyclically Adjusted Book per Share of NT$20.91 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 Aurona Industries and its competitors.
Is Aurona Industries' Cyclically Adjusted Book per Share too high?
Aurona Industries' current Cyclically Adjusted Book per Share is NT$20.91. Overall, Aurona Industries has a GF Score™ of 49/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Aurona Industries' Cyclically Adjusted Book per Share compare to APH and GLW?
Aurona Industries' Cyclically Adjusted Book per Share of NT$20.91 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 Aurona Industries and its competitors. Aurona Industries's current Cyclically Adjusted Book per Share is NT$20.91. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Aurona Industries stock overvalued right now?
Based on GuruFocus' analysis, Aurona Industries (ROCO:8074) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$23.01, compared to a current price of NT$61.50 — trading 167.3% above its estimated fair value. The current Cyclically Adjusted Book per Share is NT$20.91. Aurona Industries' overall GF Score™ is 49/100 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 Aurona Industries (ROCO:8074), the current Cyclically Adjusted Book per Share is NT$20.91 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 Aurona Industries (ROCO:8074) Overvalued in 2026?

Based on GuruFocus' analysis, Aurona Industries stock appears to be overvalued. The current stock price of NT$61.50 is trading 167.3% above its estimated GF Value™ of NT$23.01. GuruFocus considers Aurona Industries to be Significantly Overvalued.

Key valuation signals for ROCO:8074:

  • Cyclically Adjusted Book per Share: NT$20.91
  • GF Value™: NT$23.01 vs. price of NT$61.50 (167.3% above fair value)
  • GF Score™: 49/100 with 5 warning signs

No single metric tells the full story. See the ROCO:8074 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Aurona Industries Business Description

Address No 12-27 Lai Guan Liau, Chia Lie Cheng Dist, Tainan Hsien, TWN
Aurona Industries Inc manufactures, processes, and trades in Bakelite, printed circuit boards, insulation materials, and Laminate hard plastic sheets. It supplies the products to high-end PCB and IC Carrier fabricators, and the PCB application includes smartphones, Flash Memory Chip, PBGA and Flip Chip drilling, among others.
49GF Score

Get the complete analysis for ROCO:8074

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

NT$61.50
Price
NT$23.01
GF Value