Princeton Technology (ROCO:6129) Cyclically Adjusted Book per Share: NT$12.37 (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:6129 Princeton Technology Corp ROCO:6129
59 GF Score
Price NT$17.30
GF Value NT$15.61
Valuation Modestly Overvalued
! 7 Warning Signs
View Full Analysis

What is Princeton Technology Cyclically Adjusted Book per Share?

Princeton Technology ROCO:6129 -3.89% 59 Cyclically Adjusted Book per Share is NT$12.37 as of Dec. 2025. GuruFocus rates ROCO:6129 with a GF Score™ of 59/100 and a GF Value™ of NT$15.61 (Modestly Overvalued). The stock has 7 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.

Princeton Technology's adjusted book value per share for the three months ended in Dec. 2025 was NT$9.180. 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$12.37 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Princeton Technology's average Cyclically Adjusted Book Growth Rate was -2.10% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was -0.80% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 0.60% 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 Princeton Technology was 1.90% per year. The lowest was -0.80% per year. And the median was 1.00% per year.

As of today (2026-07-14), Princeton Technology's current stock price is NT$17.30. Princeton Technology's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was NT$12.37. Princeton Technology's Cyclically Adjusted PB Ratio of today is 1.40.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Princeton Technology was 4.32. The lowest was 0.41. And the median was 1.86.


Princeton Technology  (ROCO:6129) 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.

Princeton Technology's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=17.30/12.37
=1.40

* 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 Princeton Technology was 4.32. The lowest was 0.41. And the median was 1.86.


Be Aware

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


Princeton Technology Cyclically Adjusted Book per Share Related Terms


Princeton Technology Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Princeton Technology'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.

Princeton Technology Cyclically Adjusted Book per Share Chart

Princeton Technology 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 12.35 12.68 12.74 12.63 12.37

Princeton Technology 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 12.63 12.66 12.62 12.55 12.37

ROCO:6129 vs NVDA, AVGO, MU: Cyclically Adjusted Book per Share Comparison

For the Semiconductors subindustry, Princeton Technology'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.


Princeton Technology Cyclically Adjusted PB Ratio vs Semiconductors Industry

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

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


ROCO:6129
59GF Score
Princeton Technology Corp ROCO:6129
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Princeton Technology 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, Princeton Technology'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)
=9.18/324.0540*324.0540
=9.180

Current CPI (Dec. 2025) = 324.0540.

Princeton Technology Quarterly Data

Book Value per Share CPI Adj_Book
201603 11.091 238.132 15.093
201606 11.175 241.018 15.025
201609 11.018 241.428 14.789
201612 11.132 241.432 14.942
201703 10.807 243.801 14.364
201706 10.773 244.955 14.252
201709 10.694 246.819 14.040
201712 10.668 246.524 14.023
201803 10.375 249.554 13.472
201806 10.624 251.989 13.662
201809 10.464 252.439 13.433
201812 10.288 251.233 13.270
201903 10.335 254.202 13.175
201906 10.242 256.143 12.957
201909 10.228 256.759 12.909
201912 10.053 256.974 12.677
202003 9.681 258.115 12.154
202006 9.556 257.797 12.012
202009 9.424 260.280 11.733
202012 9.475 260.474 11.788
202103 9.589 264.877 11.731
202106 9.711 271.696 11.582
202109 9.877 274.310 11.668
202112 10.138 278.802 11.783
202203 10.490 287.504 11.824
202206 10.717 296.311 11.720
202209 11.157 296.808 12.181
202212 11.391 296.797 12.437
202303 11.701 301.836 12.562
202306 11.212 305.109 11.908
202309 11.458 307.789 12.063
202312 11.317 306.746 11.956
202403 11.298 312.332 11.722
202406 10.822 314.175 11.162
202409 10.345 315.301 10.632
202412 10.318 315.605 10.594
202503 9.935 319.799 10.067
202506 9.154 322.561 9.196
202509 9.103 324.800 9.082
202512 9.180 324.054 9.180

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$12.37 mean?
Princeton Technology (ROCO:6129) has a Cyclically Adjusted Book per Share of NT$12.37 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 Princeton Technology and its competitors.
Is Princeton Technology's Cyclically Adjusted Book per Share too high?
Princeton Technology's current Cyclically Adjusted Book per Share is NT$12.37. Overall, Princeton Technology has a GF Score™ of 59/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Princeton Technology's Cyclically Adjusted Book per Share compare to NVDA and AVGO?
Princeton Technology's Cyclically Adjusted Book per Share of NT$12.37 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 Princeton Technology and its competitors. Princeton Technology's current Cyclically Adjusted Book per Share is NT$12.37. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Princeton Technology stock overvalued right now?
Based on GuruFocus' analysis, Princeton Technology (ROCO:6129) is currently considered Modestly Overvalued. The stock's GF Value™ is NT$15.61, compared to a current price of NT$17.30 — trading 10.8% above its estimated fair value. The current Cyclically Adjusted Book per Share is NT$12.37. Princeton Technology's overall GF Score™ is 59/100 with 7 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 Princeton Technology (ROCO:6129), the current Cyclically Adjusted Book per Share is NT$12.37 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 Princeton Technology (ROCO:6129) Overvalued in 2026?

Based on GuruFocus' analysis, Princeton Technology stock appears to be overvalued. The current stock price of NT$17.30 is trading 10.8% above its estimated GF Value™ of NT$15.61. GuruFocus considers Princeton Technology to be Modestly Overvalued.

Key valuation signals for ROCO:6129:

  • Cyclically Adjusted Book per Share: NT$12.37
  • GF Value™: NT$15.61 vs. price of NT$17.30 (10.8% above fair value)
  • GF Score™: 59/100 with 7 warning signs

No single metric tells the full story. See the ROCO:6129 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Princeton Technology Business Description

Address No. 233-1, Baoqiao Road, 2nd Floor, Xindian District, New Taipei City, TWN, 23145
Princeton Technology Corp is engaged in the development, design, testing, and sales of consumer integrated circuits (ICs). Its products include Display Driver ICs, Multimedia Audio Controller ICs, Motor Driver ICs, RF ICs, Encoder/Decoder ICs, Remote Control ICs, and ASICs, and are suitable for a wide range of applications, including automotive dashboard and multimedia devices, portable audio players, digital TVs, home audio/video appliances, DSCs, DSLRs, monitoring cameras, and car security systems. Geographically, the company generates maximum revenue from Mainland China (including Hong Kong), followed by Japan, Taiwan, Korea, and other regions.
59GF Score

Get the complete analysis for ROCO:6129

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

NT$17.30
Price
NT$15.61
GF Value