Asia Optical Co (TPE:3019) Cyclically Adjusted Book per Share: NT$50.54 (As of Dec. 2025)

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Founder & CEO of GuruFocus
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TPE:3019 Asia Optical Co Inc TPE:3019
86 GF Score
Price NT$147.50
GF Value NT$138.21
Valuation Fairly Valued
! 1 Warning Sign
View Full Analysis

What is Asia Optical Co Cyclically Adjusted Book per Share?

Asia Optical Co TPE:3019 +2.79% 86 Cyclically Adjusted Book per Share is NT$50.54 as of Dec. 2025. GuruFocus rates TPE:3019 with a GF Score™ of 86/100 and a GF Value™ of NT$138.21 (Fairly Valued). 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.

Asia Optical Co's adjusted book value per share for the three months ended in Dec. 2025 was NT$53.263. 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$50.54 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Asia Optical Co's average Cyclically Adjusted Book Growth Rate was 1.80% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 1.70% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 2.60% 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 Asia Optical Co was 3.10% per year. The lowest was -0.40% per year. And the median was 2.50% per year.

As of today (2026-07-14), Asia Optical Co's current stock price is NT$147.50. Asia Optical Co's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was NT$50.54. Asia Optical Co's Cyclically Adjusted PB Ratio of today is 2.92.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Asia Optical Co was 4.11. The lowest was 1.16. And the median was 1.74.


Asia Optical Co  (TPE:3019) 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.

Asia Optical Co's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=147.50/50.54
=2.92

* 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 Asia Optical Co was 4.11. The lowest was 1.16. And the median was 1.74.


Be Aware

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


Asia Optical Co Cyclically Adjusted Book per Share Related Terms


Asia Optical Co Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Asia Optical 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.

Asia Optical Co Cyclically Adjusted Book per Share Chart

Asia Optical 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 45.92 47.99 48.56 49.65 50.54

Asia Optical 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 49.65 50.24 50.51 50.70 50.54

TPE:3019 vs APH, GLW: Cyclically Adjusted Book per Share Comparison

For the Electronic Components subindustry, Asia Optical 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.


Asia Optical Co Cyclically Adjusted PB Ratio vs Hardware Industry

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

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


TPE:3019
86GF Score
Asia Optical Co Inc TPE:3019
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Asia Optical 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, Asia Optical 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)
=53.263/324.0540*324.0540
=53.263

Current CPI (Dec. 2025) = 324.0540.

Asia Optical Co Quarterly Data

Book Value per Share CPI Adj_Book
201603 39.552 238.132 53.823
201606 39.698 241.018 53.375
201609 39.142 241.428 52.538
201612 39.755 241.432 53.360
201703 37.894 243.801 50.368
201706 38.027 244.955 50.306
201709 39.173 246.819 51.431
201712 39.016 246.524 51.286
201803 38.974 249.554 50.609
201806 39.612 251.989 50.940
201809 40.827 252.439 52.409
201812 42.031 251.233 54.214
201903 42.728 254.202 54.469
201906 41.926 256.143 53.042
201909 42.951 256.759 54.208
201912 41.798 256.974 52.709
202003 41.563 258.115 52.181
202006 39.329 257.797 49.437
202009 39.704 260.280 49.432
202012 39.839 260.474 49.563
202103 40.863 264.877 49.992
202106 41.487 271.696 49.482
202109 41.729 274.310 49.296
202112 43.227 278.802 50.243
202203 43.685 287.504 49.239
202206 41.608 296.311 45.504
202209 45.155 296.808 49.300
202212 44.126 296.797 48.178
202303 42.443 301.836 45.567
202306 43.661 305.109 46.372
202309 46.274 307.789 48.719
202312 44.967 306.746 47.504
202403 46.036 312.332 47.764
202406 48.278 314.175 49.796
202409 49.723 315.301 51.103
202412 52.544 315.605 53.951
202503 50.084 319.799 50.750
202506 45.897 322.561 46.109
202509 50.031 324.800 49.916
202512 53.263 324.054 53.263

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$50.54 mean?
Asia Optical Co (TPE:3019) has a Cyclically Adjusted Book per Share of NT$50.54 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 Asia Optical Co and its competitors.
Is Asia Optical Co's Cyclically Adjusted Book per Share too high?
Asia Optical Co's current Cyclically Adjusted Book per Share is NT$50.54. Overall, Asia Optical Co has a GF Score™ of 86/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Asia Optical Co's Cyclically Adjusted Book per Share compare to APH and GLW?
Asia Optical Co's Cyclically Adjusted Book per Share of NT$50.54 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 Asia Optical Co and its competitors. Asia Optical Co's current Cyclically Adjusted Book per Share is NT$50.54. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Asia Optical Co stock overvalued right now?
Based on GuruFocus' analysis, Asia Optical Co (TPE:3019) is currently considered Fairly Valued. The stock's GF Value™ is NT$138.21, compared to a current price of NT$147.50 — trading 6.7% above its estimated fair value. The current Cyclically Adjusted Book per Share is NT$50.54. Asia Optical Co's overall GF Score™ is 86/100 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 Asia Optical Co (TPE:3019), the current Cyclically Adjusted Book per Share is NT$50.54 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 Asia Optical Co (TPE:3019) Overvalued in 2026?

Based on GuruFocus' analysis, Asia Optical Co stock appears to be overvalued. The current stock price of NT$147.50 is trading 6.7% above its estimated GF Value™ of NT$138.21. GuruFocus considers Asia Optical Co to be Fairly Valued.

Key valuation signals for TPE:3019:

  • Cyclically Adjusted Book per Share: NT$50.54
  • GF Value™: NT$138.21 vs. price of NT$147.50 (6.7% above fair value)
  • GF Score™: 86/100 with 1 warning sign

No single metric tells the full story. See the TPE:3019 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Asia Optical Co Business Description

Address No. 22-3, South 2nd Road, Tanzi District, Taichung, TWN, 427058
Asia Optical Co Inc is engaged in the manufacturing and sale of cameras, rangefinders, riflescopes, photocopier lens, scanner lens and optical components. The companies reportable segments included optical components, contact image sensor modules, optronics components, optronics products and digital camera. The majority of the revenue is generated from optical components. The company operates in two principal geographical areas Asia and America.
86GF Score

Get the complete analysis for TPE:3019

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

NT$147.50
Price
NT$138.21
GF Value