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.
Ecocera Optronics CoROCO:6597 -0.88%87 Pretax Margin % is 17.60% as of Dec. 2025, which is 144% above its 10-year median of 7.20. GuruFocus rates ROCO:6597 with a GF Score™ of 87/100 and a GF Value™ of NT$69.69 (Fairly Valued). The stock has 7 warning signs investors should review. Among 2,479 Hardware companies, Ecocera Optronics Co ranks better than 78.5% on this metric.
The historical rank and industry rank for Ecocera Optronics Co's Pretax Margin % or its related term are showing as below:
ROCO:6597'
s Pretax Margin % Range Over the Past 10 Years
Min: -11.75 Med: 7.2 Max: 18.07
Current: 11.73
ROCO:6597's Pretax Margin % is ranked better than 78.5% of 2479
companies
in the Hardware industry
Industry Median: 3.59
vs ROCO:6597: 11.73
Ecocera Optronics Co (ROCO:6597) 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.
Ecocera Optronics Co Pretax Margin % Related Terms
Ecocera Optronics Co Pretax Margin % Historical Data
* Premium members only.
The historical data trend for Ecocera Optronics Co'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, Ecocera Optronics Co'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.
Ecocera Optronics Co Pretax Margin % vs Hardware Industry
For the Hardware industry and Technology sector, Ecocera Optronics Co's Pretax Margin % distribution charts can be found below:
* The bar in red indicates where Ecocera Optronics Co'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.
Ecocera Optronics Co (ROCO:6597) has a Pretax Margin % of 17.60% as of Dec. 2025. Pre-Tax margin is the ratio of total pre-tax income to net sales. View historical data on Ecocera Optronics Co and its competitors. This is 144% above median its historical median of 7.20. According to the industry distribution chart, Ecocera Optronics Co ranks #533 out of 2479 companies in the Hardware industry, placing it in the top 21.5%.
Is Ecocera Optronics Co's Pretax Margin % too high?
Ecocera Optronics Co's current Pretax Margin % of 17.60% is 144% above median its 10-year median of 7.20. The Hardware industry median Pretax Margin % is 3.59. Ecocera Optronics Co's value of 17.60% is 390.3% above this industry median. Based on the distribution chart, Ecocera Optronics Co ranks #533 out of 2479 companies in the Hardware industry, which is in the top quartile — a strong position relative to peers. Overall, Ecocera Optronics Co has a GF Score™ of 87/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Ecocera Optronics Co's Pretax Margin % compare to APH and GLW?
According to the Hardware industry distribution chart, Ecocera Optronics Co ranks #533 out of 2479 companies for Pretax Margin %. This places Ecocera Optronics Co in the top 22% of its industry — outperforming the majority of peers. The industry median Pretax Margin % is 3.59. Ecocera Optronics Co's value of 17.60% is 390.3% above this benchmark. While the company's 10-year median is 7.20 vs. the industry median of 3.59, Ecocera Optronics Co 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 3.59, based on 2,479 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. Ecocera Optronics Co's current Pretax Margin % of 17.60% is 390.3% 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 Ecocera Optronics Co and its competitors. For the Hardware industry, the median Pretax Margin % is 3.59 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Ecocera Optronics Co's current Pretax Margin % is 17.60%, which is 144% above median its own 10-year median of 7.20. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Ecocera Optronics Co stock overvalued right now?
Based on GuruFocus' analysis, Ecocera Optronics Co (ROCO:6597) is currently considered Fairly Valued. The stock's GF Value™ is NT$69.69, compared to a current price of NT$67.20 — trading 3.6% below its estimated fair value. The current Pretax Margin % is 17.60%, which is 144% above median its 10-year median of 7.20 and 390.3% above the Hardware industry median of 3.59. Ecocera Optronics Co's overall GF Score™ is 87/100 with 7 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 Ecocera Optronics Co (ROCO:6597), the current Pretax Margin % is 17.60% 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 Ecocera Optronics Co (ROCO:6597) Overvalued in 2026?
Based on GuruFocus' analysis, Ecocera Optronics Co stock appears to be undervalued.
The current stock price of NT$67.20 is trading 3.6% below its estimated GF Value™ of NT$69.69.
GuruFocus considers Ecocera Optronics Co to be Fairly Valued.
Key valuation signals for ROCO:6597:
Pretax Margin %: 17.60% (144% above median its 10-year median of 7.20)
GF Value™: NT$69.69 vs. price of NT$67.20 (3.6% below fair value)
Industry Position: 390.3% above the Hardware median (#533 of 2479)
No single metric tells the full story. See the ROCO:6597 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Ecocera Optronics Co Ltd is a Taiwan-based company engaged in the production of ceramic substrates and ceramic circuit boards. The company's products are used in LED lighting, automotive lighting, mobile phone LED flash, UV, display, and other applications.
87GF Score
Get the complete analysis for ROCO:6597
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:6597 has been successfully added to your 
