Winstek Semiconductor Co (ROCO:3265) Cyclically Adjusted PB Ratio: 3.70 (As of Aug. 12, 2026) — 137% Above 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:3265 Winstek Semiconductor Co Ltd ROCO:3265
75 GF Score
Price NT$159.50
GF Value NT$129.40
Valuation Modestly Overvalued
! 3 Warning Signs
View Full Analysis

What is Winstek Semiconductor Co Cyclically Adjusted PB Ratio?

Winstek Semiconductor Co ROCO:3265 -3.04% 75 Cyclically Adjusted PB Ratio is 3.70 as of Aug. 12, 2026, which is 137% above its 10-year median of 1.56. GuruFocus rates ROCO:3265 with a GF Score™ of 75/100 and a GF Value™ of NT$129.40 (Modestly Overvalued). The stock has 3 warning signs investors should review. Among 728 Semiconductors companies, Winstek Semiconductor Co ranks worse than 52.47% on this metric.

As of today (2026-08-12), Winstek Semiconductor Co's current share price is NT$159.50. Winstek Semiconductor Co's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was NT$43.12. Winstek Semiconductor Co's Cyclically Adjusted PB Ratio for today is 3.70.

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

ROCO:3265' s Cyclically Adjusted PB Ratio Range Over the Past 10 Years
Min: 0.72   Med: 1.56   Max: 4.42
Current: 3.56

During the past years, Winstek Semiconductor Co's highest Cyclically Adjusted PB Ratio was 4.42. The lowest was 0.72. And the median was 1.56.

ROCO:3265's Cyclically Adjusted PB Ratio is ranked worse than
52.47% of 728 companies
in the Semiconductors industry
Industry Median: 3.23 vs ROCO:3265: 3.56

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.

Winstek Semiconductor Co's adjusted book value per share data for the three months ended in Mar. 2026 was NT$44.265. 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$43.12 for the trailing ten years ended in Mar. 2026.

Shiller PE for Stocks: The True Measure of Stock Valuation


Winstek Semiconductor Co  (ROCO:3265) 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.


Winstek Semiconductor Co Cyclically Adjusted PB Ratio Related Terms


Winstek Semiconductor Co Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Winstek Semiconductor 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.

Winstek Semiconductor Co Cyclically Adjusted PB Ratio Chart

Winstek Semiconductor 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 0.98 1.27 2.41 2.81 3.01

Winstek Semiconductor Co Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
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 2.30 2.29 2.30 3.01 3.30

ROCO:3265 vs NVDA, AVGO, MU: Cyclically Adjusted PB Ratio Comparison

For the Semiconductors subindustry, Winstek Semiconductor 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.


Winstek Semiconductor Co Cyclically Adjusted PB Ratio vs Semiconductors Industry

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

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


ROCO:3265
75GF Score
Winstek Semiconductor Co Ltd ROCO:3265
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Winstek Semiconductor 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.

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

Cyclically Adjusted PB Ratio=Share Price/ Cyclically Adjusted Book per Share
=159.50/43.12
=3.70

* 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.

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

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

Adj_Book=Book Value per Share/CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=44.265/330.2130*330.2130
=44.265

Current CPI (Mar. 2026) = 330.2130.

Winstek Semiconductor Co Quarterly Data

Book Value per Share CPI Adj_Book
201606 23.449 241.018 32.127
201609 23.881 241.428 32.663
201612 27.758 241.432 37.965
201703 29.234 243.801 39.596
201706 27.859 244.955 37.555
201709 28.451 246.819 38.064
201712 31.632 246.524 42.370
201803 31.689 249.554 41.931
201806 32.496 251.989 42.584
201809 33.419 252.439 43.715
201812 33.571 251.233 44.125
201903 34.053 254.202 44.235
201906 32.923 256.143 42.443
201909 33.212 256.759 42.713
201912 35.879 256.974 46.105
202003 34.605 258.115 44.271
202006 34.411 257.797 44.077
202009 34.578 260.280 43.869
202012 34.708 260.474 44.001
202103 33.935 264.877 42.306
202106 34.052 271.696 41.386
202109 35.043 274.310 42.185
202112 35.783 278.802 42.381
202203 35.899 287.504 41.232
202206 39.075 296.311 43.546
202209 42.595 296.808 47.389
202212 42.961 296.797 47.798
202303 39.026 301.836 42.695
202306 41.323 305.109 44.723
202309 43.849 307.789 47.044
202312 43.990 306.746 47.355
202403 41.803 312.332 44.196
202406 43.604 314.175 45.830
202409 44.377 315.301 46.476
202412 46.705 315.605 48.867
202503 43.924 319.799 45.354
202506 41.946 322.561 42.941
202509 44.264 324.800 45.002
202512 46.689 324.054 47.576
202603 44.265 330.213 44.265

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 3.70 mean?
Winstek Semiconductor Co (ROCO:3265) has a Cyclically Adjusted PB Ratio of 3.70 as of Aug. 12, 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 Winstek Semiconductor Co and its competitors. This is 137% above median its historical median of 1.56. Over the past decade, Winstek Semiconductor Co's Cyclically Adjusted PB Ratio has ranged from 0.72 to 4.42. According to the industry distribution chart, Winstek Semiconductor Co ranks #382 out of 728 companies in the Semiconductors industry, placing it in the top 52.5%.
Is Winstek Semiconductor Co's Cyclically Adjusted PB Ratio too high?
Winstek Semiconductor Co's current Cyclically Adjusted PB Ratio of 3.70 is 137% above median its 10-year median of 1.56. Over the past 10 years, this metric has ranged from a low of 0.72 to a high of 4.42. The Semiconductors industry median Cyclically Adjusted PB Ratio is 3.23. Winstek Semiconductor Co's value of 3.70 is 14.6% above this industry median. Based on the distribution chart, Winstek Semiconductor Co ranks #382 out of 728 companies in the Semiconductors industry, which is below the industry midpoint. Overall, Winstek Semiconductor Co has a GF Score™ of 75/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Winstek Semiconductor Co's Cyclically Adjusted PB Ratio compare to NVDA and AVGO?
According to the Semiconductors industry distribution chart, Winstek Semiconductor Co ranks #382 out of 728 companies for Cyclically Adjusted PB Ratio. This places Winstek Semiconductor Co in the lower half of its industry. The industry median Cyclically Adjusted PB Ratio is 3.23. Winstek Semiconductor Co's value of 3.70 is 14.6% above this benchmark. Historically, Winstek Semiconductor Co's own Cyclically Adjusted PB Ratio has ranged from 0.72 to 4.42 over the past decade. While the company's 10-year median is 1.56 vs. the industry median of 3.23, Winstek Semiconductor Co has consistently been above 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 Semiconductors company?
The median Cyclically Adjusted PB Ratio among Semiconductors companies is 3.23, based on 728 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. Winstek Semiconductor Co's current Cyclically Adjusted PB Ratio of 3.70 is 14.6% above 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 Winstek Semiconductor Co and its competitors. For the Semiconductors industry, the median Cyclically Adjusted PB Ratio is 3.23 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Winstek Semiconductor Co's current Cyclically Adjusted PB Ratio is 3.70, which is 137% above median its own 10-year median of 1.56. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Winstek Semiconductor Co stock overvalued right now?
Based on GuruFocus' analysis, Winstek Semiconductor Co (ROCO:3265) is currently considered Modestly Overvalued. The stock's GF Value™ is NT$129.40, compared to a current price of NT$159.50 — trading 23.3% above its estimated fair value. The current Cyclically Adjusted PB Ratio is 3.70, which is 137% above median its 10-year median of 1.56 and 14.6% above the Semiconductors industry median of 3.23. Winstek Semiconductor Co's overall GF Score™ is 75/100 with 3 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 Winstek Semiconductor Co (ROCO:3265), the current Cyclically Adjusted PB Ratio is 3.70 as of Aug. 12, 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 Winstek Semiconductor Co (ROCO:3265) Overvalued in 2026?

Based on GuruFocus' analysis, Winstek Semiconductor Co stock appears to be overvalued. The current stock price of NT$159.50 is trading 23.3% above its estimated GF Value™ of NT$129.40. GuruFocus considers Winstek Semiconductor Co to be Modestly Overvalued.

Key valuation signals for ROCO:3265:

  • Cyclically Adjusted PB Ratio: 3.70 (137% above median its 10-year median of 1.56)
  • GF Value™: NT$129.40 vs. price of NT$159.50 (23.3% above fair value)
  • GF Score™: 75/100 with 3 warning signs
  • Industry Position: 14.6% above the Semiconductors median (#382 of 728)

No single metric tells the full story. See the ROCO:3265 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Winstek Semiconductor Co Business Description

Address No. 176-5, Luliaokeng, 6th Ling, Qionglin Township, Hualung Chun, Chiung Lin, Hsinchu, TWN, 307410
Winstek Semiconductor Co Ltd is engaged in testing and packing services for chips and wafers. The company offers services in Test, Bump, Backend services, and vertical analysis.
75GF Score

Get the complete analysis for ROCO:3265

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

NT$159.50
Price
NT$129.40
GF Value