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.
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.
Co-Tech DevelopmentROCO:8358 +0.54%75 Pretax Margin % is 22.54% as of Dec. 2025, which is 44% above its 10-year median of 15.60. GuruFocus rates ROCO:8358 with a GF Score™ of 75/100 and a GF Value™ of NT$93.36 (Significantly Overvalued). The stock has 2 warning signs investors should review. Among 2,477 Hardware companies, Co-Tech Development ranks better than 87.97% on this metric.
The historical rank and industry rank for Co-Tech Development's Pretax Margin % or its related term are showing as below:
ROCO:8358'
s Pretax Margin % Range Over the Past 10 Years
Min: 10.08 Med: 15.6 Max: 21.37
Current: 17.01
ROCO:8358's Pretax Margin % is ranked better than 87.97% of 2477
companies
in the Hardware industry
Industry Median: 3.58
vs ROCO:8358: 17.01
Co-Tech Development (ROCO:8358) 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.
Co-Tech Development Pretax Margin % Related Terms
Co-Tech Development Pretax Margin % Historical Data
* Premium members only.
The historical data trend for Co-Tech Development'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.
For the Electronic Components subindustry, Co-Tech Development'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.
Co-Tech Development Pretax Margin % vs Hardware Industry
For the Hardware industry and Technology sector, Co-Tech Development's Pretax Margin % distribution charts can be found below:
* The bar in red indicates where Co-Tech Development's Pretax Margin % falls into.
* 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.
Co-Tech Development (ROCO:8358) has a Pretax Margin % of 22.54% as of Dec. 2025. Pre-Tax margin is the ratio of total pre-tax income to net sales. View historical data on Co-Tech Development and its competitors. This is 44% above median its historical median of 15.60. Over the past decade, Co-Tech Development's Pretax Margin % has ranged from 10.08 to 21.37. According to the industry distribution chart, Co-Tech Development ranks #298 out of 2477 companies in the Hardware industry, placing it in the top 12%.
Is Co-Tech Development's Pretax Margin % too high?
Co-Tech Development's current Pretax Margin % of 22.54% is 44% above median its 10-year median of 15.60. Over the past 10 years, this metric has ranged from a low of 10.08 to a high of 21.37. The Hardware industry median Pretax Margin % is 3.58. Co-Tech Development's value of 22.54% is 529.6% above this industry median. Based on the distribution chart, Co-Tech Development ranks #298 out of 2477 companies in the Hardware industry, which is in the top quartile — a strong position relative to peers. Overall, Co-Tech Development has a GF Score™ of 75/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Co-Tech Development's Pretax Margin % compare to APH and GLW?
According to the Hardware industry distribution chart, Co-Tech Development ranks #298 out of 2477 companies for Pretax Margin %. This places Co-Tech Development in the top 12% of its industry — outperforming the majority of peers. The industry median Pretax Margin % is 3.58. Co-Tech Development's value of 22.54% is 529.6% above this benchmark. Historically, Co-Tech Development's own Pretax Margin % has ranged from 10.08 to 21.37 over the past decade. While the company's 10-year median is 15.60 vs. the industry median of 3.58, Co-Tech Development has consistently been above the industry average. 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 Hardware company?
The median Pretax Margin % among Hardware companies is 3.58, based on 2,477 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. Co-Tech Development's current Pretax Margin % of 22.54% is 529.6% above the industry median. 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 Co-Tech Development and its competitors. For the Hardware industry, the median Pretax Margin % is 3.58 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Co-Tech Development's current Pretax Margin % is 22.54%, which is 44% above median its own 10-year median of 15.60. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Co-Tech Development stock overvalued right now?
Based on GuruFocus' analysis, Co-Tech Development (ROCO:8358) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$93.36, compared to a current price of NT$462.50 — trading 395.4% above its estimated fair value. The current Pretax Margin % is 22.54%, which is 44% above median its 10-year median of 15.60 and 529.6% above the Hardware industry median of 3.58. Co-Tech Development's overall GF Score™ is 75/100 with 2 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 Co-Tech Development (ROCO:8358), the current Pretax Margin % is 22.54% 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 Co-Tech Development (ROCO:8358) Overvalued in 2026?
Based on GuruFocus' analysis, Co-Tech Development stock appears to be overvalued.
The current stock price of NT$462.50 is trading 395.4% above its estimated GF Value™ of NT$93.36.
GuruFocus considers Co-Tech Development to be Significantly Overvalued.
Key valuation signals for ROCO:8358:
Pretax Margin %: 22.54% (44% above median its 10-year median of 15.60)
GF Value™: NT$93.36 vs. price of NT$462.50 (395.4% above fair value)
Industry Position: 529.6% above the Hardware median (#298 of 2477)
No single metric tells the full story. See the ROCO:8358 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Co-Tech Development Corp manufactures and sells standard, low profile and high-performance series of copper foil products to supply the printed circuit board industry. Its products include IT, 3C Products HDI, LED car lighting module, Server, Switch, Storage, Rigid-Flex PCB, Touch module, 3D face recognition, Automotive market, 5G Antenna Radar, ADAS, HDI / Rigid-Flex Board, Touch module, Wearable devices / VR, Augmented Reality, Mobile terminal, 3D face recognition, Communication module. The group has only copper foil segment operating in two principal geographical areas - Taiwan and China.
75GF Score
Get the complete analysis for ROCO:8358
Pretax Margin % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
ROCO:8358 has been successfully added to your 
