Taiwan Advanced Nanotech (ROCO:6797) Pretax Margin %: -120.50% (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
View Full Analysis

What is Taiwan Advanced Nanotech Pretax Margin %?

Taiwan Advanced Nanotech ROCO:6797 59 Pretax Margin % is -120.50% 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. Among 818 Medical Devices & Instruments companies, Taiwan Advanced Nanotech ranks worse than 85.09% on this metric.

Pre-Tax margin is calculated as Pre-Tax Income divided by its Revenue. Taiwan Advanced Nanotech's Pre-Tax Income for the six months ended in Dec. 2025 was NT$-105.4 Mil. Taiwan Advanced Nanotech's Revenue for the six months ended in Dec. 2025 was NT$87.5 Mil. Therefore, Taiwan Advanced Nanotech's pretax margin for the quarter that ended in Dec. 2025 was -120.50%.

The historical rank and industry rank for Taiwan Advanced Nanotech's Pretax Margin % or its related term are showing as below:

ROCO:6797' s Pretax Margin % Range Over the Past 10 Years
Min: -146.79   Med: -26.59   Max: 44.97
Current: -146.79


ROCO:6797's Pretax Margin % is ranked worse than
85.09% of 818 companies
in the Medical Devices & Instruments industry
Industry Median: 2.505 vs ROCO:6797: -146.79

Taiwan Advanced Nanotech  (ROCO:6797) Pretax Margin % Explanation

The pretax margin, as know as pretax profit margin, is widely used to measure the operating efficiency of a company before deducting taxes.

The pretax margin is sometimes preferred over the net margin as tax expenditures can make profitability comparisons between companies misleading.

It is a useful tool to compare companies operating in the same sector and less effective when comparing companies from other sectors as each industry generally has different operating expenses and sales patterns.

The long term trend of the pretax margin is a good indicator of the competitiveness and health of the business.


Taiwan Advanced Nanotech Pretax Margin % Related Terms


Taiwan Advanced Nanotech Pretax Margin % Historical Data

* Premium members only.

The historical data trend for Taiwan Advanced Nanotech's Pretax Margin % 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 Pretax Margin % Chart

Taiwan Advanced Nanotech Annual Data
Trend Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Pretax Margin %
Get a 7-Day Free Trial Premium Member Only 41.03 34.73 -99.13 -97.98 -146.79

Taiwan Advanced Nanotech Semi-Annual Data
Dec17 Dec18 Jun19 Dec19 Jun20 Dec20 Jun21 Dec21 Jun22 Dec22 Jun23 Dec23 Jun24 Dec24 Jun25 Dec25
Pretax Margin % 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 -123.92 -118.21 -80.21 -181.18 -120.50

ROCO:6797 vs ABT, SYK, MDT: Pretax Margin % Comparison

For the Medical Devices subindustry, Taiwan Advanced Nanotech's Pretax Margin %, along with its competitors' market caps and Pretax Margin % 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 Pretax Margin % vs Medical Devices & Instruments Industry

For the Medical Devices & Instruments industry and Healthcare sector, Taiwan Advanced Nanotech's Pretax Margin % distribution charts can be found below:

* The bar in red indicates where Taiwan Advanced Nanotech's Pretax Margin % falls into.


ROCO:6797
59GF Score
Taiwan Advanced Nanotech Inc ROCO:6797
Pretax Margin % is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Taiwan Advanced Nanotech Pretax Margin % Calculation

Pretax margin - also known as pretax profit margin is the ratio of Pretax Income divided by net sales or Revenue, usually presented in percent.

Taiwan Advanced Nanotech's Pretax Margin for the fiscal year that ended in Dec. 2025 is calculated as

Pretax Margin=Pre-Tax Income (A: Dec. 2025 )/Revenue (A: Dec. 2025 )
=-226.608/154.373
=-146.79 %

Taiwan Advanced Nanotech's Pretax Margin for the quarter that ended in Dec. 2025 is calculated as

Pretax Margin=Pre-Tax Income (Q: Dec. 2025 )/Revenue (Q: Dec. 2025 )
=-105.423/87.487
=-120.50 %

* 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.

Frequently Asked Questions Learn more about Pretax Margin % →
What does a Pretax Margin % of -120.50% mean?
Taiwan Advanced Nanotech (ROCO:6797) has a Pretax Margin % of -120.50% as of Dec. 2025. Pre-Tax margin is the ratio of total pre-tax income to net sales. View historical data on Taiwan Advanced Nanotech and its competitors. According to the industry distribution chart, Taiwan Advanced Nanotech ranks #696 out of 818 companies in the Medical Devices & Instruments industry, placing it in the top 85.1%.
Is Taiwan Advanced Nanotech's Pretax Margin % too high?
Taiwan Advanced Nanotech's current Pretax Margin % is -120.50%. Based on the distribution chart, Taiwan Advanced Nanotech ranks #696 out of 818 companies in the Medical Devices & Instruments industry, which is in the bottom quartile relative to peers. 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 Pretax Margin % compare to ABT and SYK?
According to the Medical Devices & Instruments industry distribution chart, Taiwan Advanced Nanotech ranks #696 out of 818 companies for Pretax Margin %. This places Taiwan Advanced Nanotech in the lower half of its industry. The industry median Pretax Margin % is 2.51. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Pretax Margin % for a Medical Devices & Instruments company?
The median Pretax Margin % among Medical Devices & Instruments companies is 2.51, based on 818 companies in the industry. Companies in the top quartile (top 25%) have a Pretax Margin % significantly above this median, while those in the bottom quartile fall well below. However, Pretax Margin % 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 Pretax Margin % mean?
A high Pretax Margin % can signal that a stock is expensive relative to its fundamentals. Pre-Tax margin is the ratio of total pre-tax income to net sales. View historical data on Taiwan Advanced Nanotech and its competitors. For the Medical Devices & Instruments industry, the median Pretax Margin % is 2.51 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Taiwan Advanced Nanotech's current Pretax Margin % is -120.50%. 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 Pretax Margin % is -120.50%. 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 Pretax Margin % calculated?
Pretax Margin % is calculated from a company's financial statements. For Taiwan Advanced Nanotech (ROCO:6797), the current Pretax Margin % is -120.50% 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:

  • Pretax Margin %: -120.50%
  • 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

Pretax Margin % 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