FeedBack Tech (ROCO:8091) Cyclically Adjusted Book per Share: NT$64.45 (As of Dec. 2025)


ROCO:8091 FeedBack Tech Corp ROCO:8091
69 GF Score
Price NT$295.00
GF Value NT$132.05
Valuation Significantly Overvalued
! 9 Warning Signs
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What is FeedBack Tech Cyclically Adjusted Book per Share?

FeedBack Tech ROCO:8091 69 Cyclically Adjusted Book per Share is NT$64.45 as of Dec. 2025. GuruFocus rates ROCO:8091 with a GF Score™ of 69/100 and a GF Value™ of NT$132.05 (Significantly Overvalued). The stock has 9 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.

FeedBack Tech's adjusted book value per share for the three months ended in Dec. 2025 was NT$69.884. 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$64.45 for the trailing ten years ended in Dec. 2025.

During the past 12 months, FeedBack Tech's average Cyclically Adjusted Book Growth Rate was 5.90% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 7.50% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 9.70% 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 FeedBack Tech was 11.80% per year. The lowest was 7.50% per year. And the median was 10.25% per year.

As of today (2026-07-12), FeedBack Tech's current stock price is NT$295.00. FeedBack Tech's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was NT$64.45. FeedBack Tech's Cyclically Adjusted PB Ratio of today is 4.58.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of FeedBack Tech was 4.58. The lowest was 1.10. And the median was 1.69.


FeedBack Tech  (ROCO:8091) 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.

FeedBack Tech's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=295.00/64.45
=4.58

* 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 FeedBack Tech was 4.58. The lowest was 1.10. And the median was 1.69.


Be Aware

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


FeedBack Tech Cyclically Adjusted Book per Share Related Terms


FeedBack Tech Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for FeedBack Tech'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.

FeedBack Tech Cyclically Adjusted Book per Share Chart

FeedBack Tech 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 46.21 51.92 56.38 60.88 64.45

FeedBack Tech 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 60.88 62.29 63.25 64.13 64.45

ROCO:8091 vs NVDA, AVGO, MU: Cyclically Adjusted Book per Share Comparison

For the Semiconductors subindustry, FeedBack Tech'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.


FeedBack Tech Cyclically Adjusted PB Ratio vs Semiconductors Industry

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

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


ROCO:8091
69GF Score
FeedBack Tech Corp ROCO:8091
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

FeedBack Tech 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, FeedBack Tech'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)
=69.884/324.0540*324.0540
=69.884

Current CPI (Dec. 2025) = 324.0540.

FeedBack Tech Quarterly Data

Book Value per Share CPI Adj_Book
201603 38.483 238.132 52.368
201606 36.316 241.018 48.828
201609 37.505 241.428 50.341
201612 38.789 241.432 52.063
201703 40.050 243.801 53.233
201706 37.955 244.955 50.211
201709 40.896 246.819 53.693
201712 55.396 246.524 72.818
201803 57.729 249.554 74.963
201806 51.739 251.989 66.536
201809 53.059 252.439 68.111
201812 54.098 251.233 69.779
201903 55.195 254.202 70.362
201906 50.844 256.143 64.324
201909 51.240 256.759 64.670
201912 51.364 256.974 64.772
202003 51.546 258.115 64.714
202006 52.192 257.797 65.606
202009 52.927 260.280 65.895
202012 54.024 260.474 67.211
202103 54.503 264.877 66.680
202106 55.329 271.696 65.991
202109 54.566 274.310 64.461
202112 56.938 278.802 66.180
202203 59.340 287.504 66.884
202206 57.920 296.311 63.343
202209 61.634 296.808 67.292
202212 63.207 296.797 69.012
202303 65.865 301.836 70.713
202306 60.519 305.109 64.277
202309 62.549 307.789 65.854
202312 63.272 306.746 66.842
202403 59.779 312.332 62.023
202406 61.988 314.175 63.937
202409 70.557 315.301 72.516
202412 72.201 315.605 74.134
202503 65.658 319.799 66.532
202506 64.075 322.561 64.372
202509 66.552 324.800 66.399
202512 69.884 324.054 69.884

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$64.45 mean?
FeedBack Tech (ROCO:8091) has a Cyclically Adjusted Book per Share of NT$64.45 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 FeedBack Tech and its competitors.
Is FeedBack Tech's Cyclically Adjusted Book per Share too high?
FeedBack Tech's current Cyclically Adjusted Book per Share is NT$64.45. Overall, FeedBack Tech has a GF Score™ of 69/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does FeedBack Tech's Cyclically Adjusted Book per Share compare to NVDA and AVGO?
FeedBack Tech's Cyclically Adjusted Book per Share of NT$64.45 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 FeedBack Tech and its competitors. FeedBack Tech's current Cyclically Adjusted Book per Share is NT$64.45. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is FeedBack Tech stock overvalued right now?
Based on GuruFocus' analysis, FeedBack Tech (ROCO:8091) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$132.05, compared to a current price of NT$295.00 — trading 123.4% above its estimated fair value. The current Cyclically Adjusted Book per Share is NT$64.45. FeedBack Tech's overall GF Score™ is 69/100 with 9 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 FeedBack Tech (ROCO:8091), the current Cyclically Adjusted Book per Share is NT$64.45 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 FeedBack Tech (ROCO:8091) Overvalued in 2026?

Based on GuruFocus' analysis, FeedBack Tech stock appears to be overvalued. The current stock price of NT$295.00 is trading 123.4% above its estimated GF Value™ of NT$132.05. GuruFocus considers FeedBack Tech to be Significantly Overvalued.

Key valuation signals for ROCO:8091:

  • Cyclically Adjusted Book per Share: NT$64.45
  • GF Value™: NT$132.05 vs. price of NT$295.00 (123.4% above fair value)
  • GF Score™: 69/100 with 9 warning signs

No single metric tells the full story. See the ROCO:8091 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


FeedBack Tech Business Description

Address Number 221, Nioupu South Road, Xiangshan District, Hsinchu, TWN, 30091
FeedBack Tech Corp is a Taiwan-based company engaged in the manufacture of semiconductor key components. The company offers ion implanters, vacuum equipment, byproduct solutions, and metal-organic vapor phase epitaxies. It also engaged in the trading of electronic machinery and parts. Its products include turbo pumps, welded bellows, source bushing, and gauge controllers.
69GF Score

Get the complete analysis for ROCO:8091

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

NT$295.00
Price
NT$132.05
GF Value