Taiwan Advanced Nanotech (ROCO:6797) ROE % Adjusted to Book Value: -41.62% (As of Dec. 2025)

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ROCO:6797 Taiwan Advanced Nanotech Inc ROCO:6797
59 GF Score
Price NT$13.20
GF Value NT$13.40
Valuation Fairly Valued
! 4 Warning Signs
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What is Taiwan Advanced Nanotech ROE % Adjusted to Book Value?

Taiwan Advanced Nanotech ROCO:6797 59 ROE % Adjusted to Book Value is -41.62% as of Dec. 2025. GuruFocus rates ROCO:6797 with a GF Score™ of 59/100 and a GF Value™ of NT$13.40 (Fairly Valued). The stock has 4 warning signs investors should review.

Taiwan Advanced Nanotech's ROE % for the quarter that ended in Dec. 2025 was -25.39%. Taiwan Advanced Nanotech's PB Ratio for the quarter that ended in Dec. 2025 was 0.61. Taiwan Advanced Nanotech's ROE % Adjusted to Book Value for the quarter that ended in Dec. 2025 was -41.62%.


Taiwan Advanced Nanotech ROE % Adjusted to Book Value Related Terms


Taiwan Advanced Nanotech ROE % Adjusted to Book Value Historical Data

* Premium members only.

The historical data trend for Taiwan Advanced Nanotech's ROE % Adjusted to Book Value 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.

Taiwan Advanced Nanotech ROE % Adjusted to Book Value Chart

Taiwan Advanced Nanotech Annual Data
Trend Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
ROE % Adjusted to Book Value
Get a 7-Day Free Trial Premium Member Only 25.15 19.73 -15.57 -28.39 -41.74

Taiwan Advanced Nanotech Semi-Annual Data
Dec17 Dec18 Jun19 Dec19 Jun20 Dec20 Jun21 Dec21 Jun22 Dec22 Jun23 Dec23 Jun24 Dec24 Jun25 Dec25
ROE % Adjusted to Book Value 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 -20.64 -22.82 -25.49 -47.35 -41.62

ROCO:6797 vs ABT, SYK, MDT: ROE % Adjusted to Book Value Comparison

For the Medical Devices subindustry, Taiwan Advanced Nanotech's ROE % Adjusted to Book Value, along with its competitors' market caps and ROE % Adjusted to Book Value 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.


Taiwan Advanced Nanotech ROE % Adjusted to Book Value vs Medical Devices & Instruments Industry

For the Medical Devices & Instruments industry and Healthcare sector, Taiwan Advanced Nanotech's ROE % Adjusted to Book Value distribution charts can be found below:

* The bar in red indicates where Taiwan Advanced Nanotech's ROE % Adjusted to Book Value falls into.


ROCO:6797
59GF Score
Taiwan Advanced Nanotech Inc ROCO:6797
ROE % Adjusted to Book Value is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Taiwan Advanced Nanotech ROE % Adjusted to Book Value Calculation

Taiwan Advanced Nanotech's ROE % Adjusted to Book Value for the fiscal year that ended in Dec. 2025 is calculated as

ROE % Adjusted to Book Value=ROE % / PB Ratio
=-25.46% / 0.61
=-41.74%

Taiwan Advanced Nanotech's ROE % Adjusted to Book Value for the quarter that ended in Dec. 2025 is calculated as

ROE % Adjusted to Book Value=ROE % / PB Ratio
=-25.39% / 0.61
=-41.62%

* 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.

What does a ROE % Adjusted to Book Value of -41.62% mean?
Taiwan Advanced Nanotech (ROCO:6797) has a ROE % Adjusted to Book Value of -41.62% as of Dec. 2025. Return on equity adjusted to book is the ratio of return on equity to price-book ratio. View historical data on Taiwan Advanced Nanotech and its competitors.
Is Taiwan Advanced Nanotech's ROE % Adjusted to Book Value too high?
Taiwan Advanced Nanotech's current ROE % Adjusted to Book Value is -41.62%. Overall, Taiwan Advanced Nanotech has a GF Score™ of 59/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Taiwan Advanced Nanotech's ROE % Adjusted to Book Value compare to ABT and SYK?
Taiwan Advanced Nanotech's ROE % Adjusted to Book Value of -41.62% can be compared against companies in the Medical Devices & Instruments industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good ROE % Adjusted to Book Value for a Medical Devices & Instruments company?
A good ROE % Adjusted to Book Value depends on the Medical Devices & Instruments industry context. However, ROE % Adjusted to Book Value 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 ROE % Adjusted to Book Value mean?
A high ROE % Adjusted to Book Value can signal that a stock is expensive relative to its fundamentals. Return on equity adjusted to book is the ratio of return on equity to price-book ratio. View historical data on Taiwan Advanced Nanotech and its competitors. Taiwan Advanced Nanotech's current ROE % Adjusted to Book Value is -41.62%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Taiwan Advanced Nanotech stock overvalued right now?
Based on GuruFocus' analysis, Taiwan Advanced Nanotech (ROCO:6797) is currently considered Fairly Valued. The stock's GF Value™ is NT$13.40, compared to a current price of NT$13.20 — trading 1.5% below its estimated fair value. The current ROE % Adjusted to Book Value is -41.62%. Taiwan Advanced Nanotech's overall GF Score™ is 59/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is ROE % Adjusted to Book Value calculated?
ROE % Adjusted to Book Value is calculated from a company's financial statements. For Taiwan Advanced Nanotech (ROCO:6797), the current ROE % Adjusted to Book Value is -41.62% 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 Taiwan Advanced Nanotech (ROCO:6797) Overvalued in 2026?

Based on GuruFocus' analysis, Taiwan Advanced Nanotech stock appears to be undervalued. The current stock price of NT$13.20 is trading 1.5% below its estimated GF Value™ of NT$13.40. GuruFocus considers Taiwan Advanced Nanotech to be Fairly Valued.

Key valuation signals for ROCO:6797:

  • ROE % Adjusted to Book Value: -41.62%
  • GF Value™: NT$13.40 vs. price of NT$13.20 (1.5% below fair value)
  • GF Score™: 59/100 with 4 warning signs

No single metric tells the full story. See the ROCO:6797 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Taiwan Advanced Nanotech Business Description

Address No. 188, Wenhe Road, 6th Floor, Leshan Lane, Guishan District, Taoyuan City, TWN, 330
Taiwan Advanced Nanotech Inc is engaged in development and manufacturing of various functional nanoparticles and automated nucleic acid extraction machines and trading related businesses. With expertise in automation, buffer optimization and modification of magnetic beads, it focuses on offering customer convenient and practical solutions to advance research, life science and molecular diagnostics. It offers various products to meet the requirements of customers. The company's products include Automated Extraction Instruments; Reagent Kit; Mag Nanoparticles; and Consumables.
59GF Score

Get the complete analysis for ROCO:6797

ROE % Adjusted to Book Value is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

NT$13.20
Price
NT$13.40
GF Value