RDC Semiconductor Co (ROCO:3228) Cyclically Adjusted Book per Share: NT$9.07 (As of Dec. 2025)

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ROCO:3228 RDC Semiconductor Co Ltd ROCO:3228
56 GF Score
Price NT$172.00
GF Value NT$135.91
Valuation Modestly Overvalued
! 4 Warning Signs
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What is RDC Semiconductor Co Cyclically Adjusted Book per Share?

RDC Semiconductor Co ROCO:3228 +2.38% 56 Cyclically Adjusted Book per Share is NT$9.07 as of Dec. 2025. GuruFocus rates ROCO:3228 with a GF Score™ of 56/100 and a GF Value™ of NT$135.91 (Modestly Overvalued). The stock has 4 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.

RDC Semiconductor Co's adjusted book value per share for the three months ended in Dec. 2025 was NT$9.414. 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$9.07 for the trailing ten years ended in Dec. 2025.

During the past 12 months, RDC Semiconductor Co's average Cyclically Adjusted Book Growth Rate was 3.00% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 2.40% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 3.40% 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 RDC Semiconductor Co was 4.00% per year. The lowest was 2.30% per year. And the median was 2.95% per year.

As of today (2026-07-15), RDC Semiconductor Co's current stock price is NT$172.00. RDC Semiconductor Co's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was NT$9.07. RDC Semiconductor Co's Cyclically Adjusted PB Ratio of today is 18.96.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of RDC Semiconductor Co was 71.37. The lowest was 2.95. And the median was 21.99.


RDC Semiconductor Co  (ROCO:3228) 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.

RDC Semiconductor Co's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=172.00/9.07
=18.96

* 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 RDC Semiconductor Co was 71.37. The lowest was 2.95. And the median was 21.99.


Be Aware

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


RDC Semiconductor Co Cyclically Adjusted Book per Share Related Terms


RDC Semiconductor Co Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for RDC Semiconductor 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.

RDC Semiconductor Co Cyclically Adjusted Book per Share Chart

RDC Semiconductor 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 7.94 8.44 8.64 8.81 9.07

RDC Semiconductor 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 8.81 8.92 8.97 9.07 9.07

ROCO:3228 vs NVDA, AVGO, MU: Cyclically Adjusted Book per Share Comparison

For the Semiconductors subindustry, RDC 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.


RDC Semiconductor Co Cyclically Adjusted PB Ratio vs Semiconductors Industry

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

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


ROCO:3228
56GF Score
RDC Semiconductor Co Ltd ROCO:3228
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

RDC Semiconductor 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, RDC Semiconductor 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)
=9.414/324.0540*324.0540
=9.414

Current CPI (Dec. 2025) = 324.0540.

RDC Semiconductor Co Quarterly Data

Book Value per Share CPI Adj_Book
201603 6.047 238.132 8.229
201606 5.910 241.018 7.946
201609 5.940 241.428 7.973
201612 5.826 241.432 7.820
201703 6.323 243.801 8.404
201706 6.127 244.955 8.105
201709 5.992 246.819 7.867
201712 5.813 246.524 7.641
201803 6.265 249.554 8.135
201806 6.683 251.989 8.594
201809 6.531 252.439 8.384
201812 6.545 251.233 8.442
201903 6.447 254.202 8.219
201906 6.251 256.143 7.908
201909 5.889 256.759 7.432
201912 5.970 256.974 7.528
202003 5.989 258.115 7.519
202006 5.722 257.797 7.193
202009 5.971 260.280 7.434
202012 6.957 260.474 8.655
202103 8.289 264.877 10.141
202106 9.631 271.696 11.487
202109 9.511 274.310 11.236
202112 9.799 278.802 11.389
202203 10.764 287.504 12.132
202206 10.907 296.311 11.928
202209 10.710 296.808 11.693
202212 10.323 296.797 11.271
202303 9.970 301.836 10.704
202306 9.544 305.109 10.137
202309 9.189 307.789 9.675
202312 8.295 306.746 8.763
202403 8.520 312.332 8.840
202406 8.995 314.175 9.278
202409 8.476 315.301 8.711
202412 9.273 315.605 9.521
202503 8.770 319.799 8.887
202506 8.173 322.561 8.211
202509 9.928 324.800 9.905
202512 9.414 324.054 9.414

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$9.07 mean?
RDC Semiconductor Co (ROCO:3228) has a Cyclically Adjusted Book per Share of NT$9.07 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 RDC Semiconductor Co and its competitors.
Is RDC Semiconductor Co's Cyclically Adjusted Book per Share too high?
RDC Semiconductor Co's current Cyclically Adjusted Book per Share is NT$9.07. Overall, RDC Semiconductor Co has a GF Score™ of 56/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does RDC Semiconductor Co's Cyclically Adjusted Book per Share compare to NVDA and AVGO?
RDC Semiconductor Co's Cyclically Adjusted Book per Share of NT$9.07 can be compared against companies in the Semiconductors 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 Semiconductors company?
A good Cyclically Adjusted Book per Share depends on the Semiconductors 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 RDC Semiconductor Co and its competitors. RDC Semiconductor Co's current Cyclically Adjusted Book per Share is NT$9.07. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is RDC Semiconductor Co stock overvalued right now?
Based on GuruFocus' analysis, RDC Semiconductor Co (ROCO:3228) is currently considered Modestly Overvalued. The stock's GF Value™ is NT$135.91, compared to a current price of NT$172.00 — trading 26.6% above its estimated fair value. The current Cyclically Adjusted Book per Share is NT$9.07. RDC Semiconductor Co's overall GF Score™ is 56/100 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 Book per Share calculated?
Cyclically Adjusted Book per Share is calculated from a company's financial statements. For RDC Semiconductor Co (ROCO:3228), the current Cyclically Adjusted Book per Share is NT$9.07 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 RDC Semiconductor Co (ROCO:3228) Overvalued in 2026?

Based on GuruFocus' analysis, RDC Semiconductor Co stock appears to be overvalued. The current stock price of NT$172.00 is trading 26.6% above its estimated GF Value™ of NT$135.91. GuruFocus considers RDC Semiconductor Co to be Modestly Overvalued.

Key valuation signals for ROCO:3228:

  • Cyclically Adjusted Book per Share: NT$9.07
  • GF Value™: NT$135.91 vs. price of NT$172.00 (26.6% above fair value)
  • GF Score™: 56/100 with 4 warning signs

No single metric tells the full story. See the ROCO:3228 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


RDC Semiconductor Co Business Description

Address Lixing Road, 6th Floor-1, No.2-1, Hsinchu Science Park, Hsinchu, TWN, 30078
RDC Semiconductor Co Ltd mainly researches, develops, manufactures, and sells 16-bit and 32-bit microcontrollers, microelectromechanical integrated applications and products, 32-bit and 64-bit microprocessors, IA automated system-on-a-chip (SoC) products, digital system applications products, server and cloud storage system chip products. The products of the company include Processor Platform, MCU & NPU, Low Power SoCs, RDC ASIC Service, and others.
56GF Score

Get the complete analysis for ROCO:3228

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

NT$172.00
Price
NT$135.91
GF Value