Aeontek Co (ROCO:1599) Cyclically Adjusted PB Ratio: 0.83 (As of Aug. 18, 2026) — 46% Below Median

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:1599 Aeontek Co Ltd ROCO:1599
64 GF Score
Price NT$23.15
GF Value NT$27.74
Valuation Modestly Undervalued
! 4 Warning Signs
View Full Analysis

What is Aeontek Co Cyclically Adjusted PB Ratio?

Aeontek Co ROCO:1599 -0.86% 64 Cyclically Adjusted PB Ratio is 0.83 as of Aug. 18, 2026, which is 46% below its 10-year median of 1.55. GuruFocus rates ROCO:1599 with a GF Score™ of 64/100 and a GF Value™ of NT$27.74 (Modestly Undervalued). The stock has 4 warning signs investors should review. Among 972 Vehicles & Parts companies, Aeontek Co ranks better than 64.51% on this metric.

As of today (2026-08-18), Aeontek Co's current share price is NT$23.15. Aeontek Co's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 was NT$27.86. Aeontek Co's Cyclically Adjusted PB Ratio for today is 0.83.

The historical rank and industry rank for Aeontek Co's Cyclically Adjusted PB Ratio or its related term are showing as below:

ROCO:1599' s Cyclically Adjusted PB Ratio Range Over the Past 10 Years
Min: 0.84   Med: 1.55   Max: 2.75
Current: 0.84

During the past years, Aeontek Co's highest Cyclically Adjusted PB Ratio was 2.75. The lowest was 0.84. And the median was 1.55.

ROCO:1599's Cyclically Adjusted PB Ratio is ranked better than
64.51% of 972 companies
in the Vehicles & Parts industry
Industry Median: 1.275 vs ROCO:1599: 0.84

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.

Aeontek Co's adjusted book value per share data for the three months ended in Jun. 2026 was NT$25.661. 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$27.86 for the trailing ten years ended in Jun. 2026.

Shiller PE for Stocks: The True Measure of Stock Valuation


Aeontek Co  (ROCO:1599) Cyclically Adjusted PB Ratio Explanation

Compared with the regular PB Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PB Ratio smoothed out the fluctuations of book value during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Cyclically Adjusted PB Ratio should give similar results to regular PB Ratio.


Aeontek Co Cyclically Adjusted PB Ratio Related Terms


Aeontek Co Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Aeontek Co's Cyclically Adjusted PB Ratio 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.

Aeontek Co Cyclically Adjusted PB Ratio Chart

Aeontek Co Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted PB Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 2.49 1.72 1.46 1.19 1.15

Aeontek Co Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Cyclically Adjusted PB Ratio 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 1.12 1.07 1.15 0.94 0.85

ROCO:1599 vs TSLA, GM, F: Cyclically Adjusted PB Ratio Comparison

For the Auto Manufacturers subindustry, Aeontek 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.


Aeontek Co Cyclically Adjusted PB Ratio vs Vehicles & Parts Industry

For the Vehicles & Parts industry and Consumer Cyclical sector, Aeontek Co's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


ROCO:1599
64GF Score
Aeontek Co Ltd ROCO:1599
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Aeontek Co Cyclically Adjusted PB Ratio Calculation

Like the Shiller PE Ratio, the Cyclically Adjusted PB Ratio takes the Book Value per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/B calculation. Because it considers this 10-year average, it's often referred to as the CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio.

Aeontek Co's Cyclically Adjusted PB Ratio for today is calculated as

Cyclically Adjusted PB Ratio=Share Price/ Cyclically Adjusted Book per Share
=23.15/27.86
=0.83

* 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.

Aeontek Co's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 is calculated as:

For example, Aeontek Co's adjusted Book Value per Share data for the three months ended in Jun. 2026 was:

Adj_Book=Book Value per Share/CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=25.661/333.9520*333.9520
=25.661

Current CPI (Jun. 2026) = 333.9520.

Aeontek Co Quarterly Data

Book Value per Share CPI Adj_Book
201609 17.382 241.428 24.043
201612 17.764 241.432 24.571
201703 18.200 243.801 24.930
201706 17.064 244.955 23.264
201709 17.770 246.819 24.043
201712 18.530 246.524 25.102
201803 18.791 249.554 25.146
201806 17.800 251.989 23.590
201809 19.560 252.439 25.876
201812 20.274 251.233 26.949
201903 21.195 254.202 27.844
201906 21.049 256.143 27.443
201909 21.574 256.759 28.060
201912 21.705 256.974 28.207
202003 21.849 258.115 28.268
202006 21.758 257.797 28.185
202009 23.463 260.280 30.104
202012 24.264 260.474 31.109
202103 25.270 264.877 31.860
202106 26.185 271.696 32.185
202109 25.854 274.310 31.475
202112 26.821 278.802 32.126
202203 27.927 287.504 32.439
202206 25.748 296.311 29.019
202209 26.844 296.808 30.203
202212 27.624 296.797 31.082
202303 25.333 301.836 28.028
202306 25.558 305.109 27.974
202309 27.110 307.789 29.414
202312 26.144 306.746 28.463
202403 25.479 312.332 27.243
202406 26.084 314.175 27.726
202409 26.978 315.301 28.574
202412 27.429 315.605 29.024
202503 26.823 319.799 28.010
202506 25.999 322.561 26.917
202509 26.817 324.800 27.573
202512 25.899 324.054 26.690
202603 25.817 330.213 26.109
202606 25.661 333.952 25.661

Add all the adjusted book value per share together and divide the count will get our 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.

What does a Cyclically Adjusted PB Ratio of 0.83 mean?
Aeontek Co (ROCO:1599) has a Cyclically Adjusted PB Ratio of 0.83 as of Aug. 18, 2026. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on Aeontek Co and its competitors. This is 46% below median its historical median of 1.55. Over the past decade, Aeontek Co's Cyclically Adjusted PB Ratio has ranged from 0.84 to 2.75. According to the industry distribution chart, Aeontek Co ranks #345 out of 972 companies in the Vehicles & Parts industry, placing it in the top 35.5%.
Is Aeontek Co's Cyclically Adjusted PB Ratio too high?
Aeontek Co's current Cyclically Adjusted PB Ratio of 0.83 is 46% below median its 10-year median of 1.55. Over the past 10 years, this metric has ranged from a low of 0.84 to a high of 2.75. The Vehicles & Parts industry median Cyclically Adjusted PB Ratio is 1.28. Aeontek Co's value of 0.83 is 34.9% below this industry median. Based on the distribution chart, Aeontek Co ranks #345 out of 972 companies in the Vehicles & Parts industry, which is above the industry midpoint. Overall, Aeontek Co has a GF Score™ of 64/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Aeontek Co's Cyclically Adjusted PB Ratio compare to TSLA and GM?
According to the Vehicles & Parts industry distribution chart, Aeontek Co ranks #345 out of 972 companies for Cyclically Adjusted PB Ratio. This puts Aeontek Co in the upper half of its industry. The industry median Cyclically Adjusted PB Ratio is 1.28. Aeontek Co's value of 0.83 is 34.9% below this benchmark. Historically, Aeontek Co's own Cyclically Adjusted PB Ratio has ranged from 0.84 to 2.75 over the past decade. While the company's 10-year median is 1.55 vs. the industry median of 1.28, Aeontek Co has consistently been below the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted PB Ratio for a Vehicles & Parts company?
The median Cyclically Adjusted PB Ratio among Vehicles & Parts companies is 1.28, based on 972 companies in the industry. Companies in the top quartile (top 25%) have a Cyclically Adjusted PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, Cyclically Adjusted PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Aeontek Co's current Cyclically Adjusted PB Ratio of 0.83 is 34.9% below the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Cyclically Adjusted PB Ratio mean?
A high Cyclically Adjusted PB Ratio can signal that a stock is expensive relative to its fundamentals. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on Aeontek Co and its competitors. For the Vehicles & Parts industry, the median Cyclically Adjusted PB Ratio is 1.28 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Aeontek Co's current Cyclically Adjusted PB Ratio is 0.83, which is 46% below median its own 10-year median of 1.55. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Aeontek Co stock overvalued right now?
Based on GuruFocus' analysis, Aeontek Co (ROCO:1599) is currently considered Modestly Undervalued. The stock's GF Value™ is NT$27.74, compared to a current price of NT$23.15 — trading 16.5% below its estimated fair value. The current Cyclically Adjusted PB Ratio is 0.83, which is 46% below median its 10-year median of 1.55 and 34.9% below the Vehicles & Parts industry median of 1.28. Aeontek Co's overall GF Score™ is 64/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted PB Ratio calculated?
Cyclically Adjusted PB Ratio is calculated from a company's financial statements. For Aeontek Co (ROCO:1599), the current Cyclically Adjusted PB Ratio is 0.83 as of Aug. 18, 2026. 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 Aeontek Co (ROCO:1599) Overvalued in 2026?

Based on GuruFocus' analysis, Aeontek Co stock appears to be undervalued. The current stock price of NT$23.15 is trading 16.5% below its estimated GF Value™ of NT$27.74. GuruFocus considers Aeontek Co to be Modestly Undervalued.

Key valuation signals for ROCO:1599:

  • Cyclically Adjusted PB Ratio: 0.83 (46% below median its 10-year median of 1.55)
  • GF Value™: NT$27.74 vs. price of NT$23.15 (16.5% below fair value)
  • GF Score™: 64/100 with 4 warning signs
  • Industry Position: 34.9% below the Vehicles & Parts median (#345 of 972)

No single metric tells the full story. See the ROCO:1599 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Aeontek Co Business Description

Address No. 41, Nanchou, Shanshang District, Tainan City, TWN, 74342
Aeontek Co Ltd is mainly engaged in motorcycle and parts manufacturing, export manufacturing, motorcycle equipment manufacturing, motorcycle wholesale, and vehicles and parts wholesale of other transportation (all-terrain vehicles). The company generates revenue from ATVs, motorcycles, electric vehicles, parts, and others. It operates through two segments: the Vehicle Segment and Investment Segment, with the Vehicle Segment generating maximum revenue. The company generates maximum revenue from Taiwan.
64GF Score

Get the complete analysis for ROCO:1599

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

NT$23.15
Price
NT$27.74
GF Value