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.
Prosperity Dielectrics CoROCO:6173 -9.98%52 Operating Margin % is 18.59% as of Dec. 2025, which is 17% above its 10-year median of 15.84. GuruFocus rates ROCO:6173 with a GF Score™ of 52/100 and a GF Value™ of NT$55.44 (Significantly Overvalued). The stock has 3 warning signs investors should review. Among 2,476 Hardware companies, Prosperity Dielectrics Co ranks better than 88.89% on this metric.
Prosperity Dielectrics Co (ROCO:6173) Operating Margin % Explanation
Just like Gross Margin %, it is important to see a company maintains its operating margin over time. Among the same industry, a company with higher operating margin is more efficient in its operation. It is also more stable during industry slowdown or recessions. Peter Lynch prefers those with higher margins than those with lower margins.
Be Aware
Operating Margin % can be manipulated by adjusting the rate of depreciation, depletion and amortization (DDA).
If a company is facing competition, its Operating Margin % may decline. Often the Operating Margin % declines well before the company's Revenue or even profit decline. Therefore, Operating Margin % is a very important indicator of whether the company is facing problems.
For instance, by 2012, Nokia (NOK)'s problems were well known and its stock had lost more than 90% of its market value since 2007. But Nokias Operating Margin % had already been in decline since 2002, although its Earnings per Share (Diluted) were still rising. Investors who paid attention to Operating Margin % would have avoided this huge loss. The same can be said for Research-in-Motion (RIMM).
Therefore, Operating Margin % is a very important screening filter for GuruFocus. GuruFocus's Buffett-Munger screener requires that the profit margin is either consistent or expanding. The Model Portfolio of the Buffett-Munger screener has outperformed the market every year since inception in 2009.
Prosperity Dielectrics Co Operating Margin % Related Terms
Prosperity Dielectrics Co Operating Margin % Historical Data
* 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.
Prosperity Dielectrics Co Operating Margin % Chart
ROCO:6173 vs APH, GLW: Operating Margin % Comparison
For the Electronic Components subindustry, Prosperity Dielectrics Co's Operating Margin %, along with its competitors' market caps and Operating 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.
Prosperity Dielectrics Co Operating Margin % vs Hardware Industry
For the Hardware industry and Technology sector, Prosperity Dielectrics Co's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Prosperity Dielectrics Co's Operating Margin % falls into.
Prosperity Dielectrics Co Operating Margin % Calculation
Operating Margin % - also known as operating income margin, operating profit margin and return on sales (ROS) - is the ratio of Operating Income divided by net sales or Revenue, usually presented in percent.
Prosperity Dielectrics Co's Operating Margin % for the fiscal year that ended in Dec. 2025 is calculated as
* 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.
Prosperity Dielectrics Co (ROCO:6173) has a Operating Margin % of 18.59% as of Dec. 2025. Operating margin is the ratio of total operating income to net sales. View historical data on Prosperity Dielectrics Co and its competitors. This is 17% above median its historical median of 15.84. Over the past decade, Prosperity Dielectrics Co's Operating Margin % has ranged from 10.68 to 33.67. According to the industry distribution chart, Prosperity Dielectrics Co ranks #275 out of 2476 companies in the Hardware industry, placing it in the top 11.1%.
Is Prosperity Dielectrics Co's Operating Margin % too high?
Prosperity Dielectrics Co's current Operating Margin % of 18.59% is 17% above median its 10-year median of 15.84. Over the past 10 years, this metric has ranged from a low of 10.68 to a high of 33.67. The Hardware industry median Operating Margin % is 3.81. Prosperity Dielectrics Co's value of 18.59% is 387.9% above this industry median. Based on the distribution chart, Prosperity Dielectrics Co ranks #275 out of 2476 companies in the Hardware industry, which is in the top quartile — a strong position relative to peers. Overall, Prosperity Dielectrics Co has a GF Score™ of 52/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Prosperity Dielectrics Co's Operating Margin % compare to APH and GLW?
According to the Hardware industry distribution chart, Prosperity Dielectrics Co ranks #275 out of 2476 companies for Operating Margin %. This places Prosperity Dielectrics Co in the top 11% of its industry — outperforming the majority of peers. The industry median Operating Margin % is 3.81. Prosperity Dielectrics Co's value of 18.59% is 387.9% above this benchmark. Historically, Prosperity Dielectrics Co's own Operating Margin % has ranged from 10.68 to 33.67 over the past decade. While the company's 10-year median is 15.84 vs. the industry median of 3.81, Prosperity Dielectrics 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 Operating Margin % for a Hardware company?
The median Operating Margin % among Hardware companies is 3.81, based on 2,476 companies in the industry. Companies in the top quartile (top 25%) have a Operating Margin % significantly above this median, while those in the bottom quartile fall well below. However, Operating Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Prosperity Dielectrics Co's current Operating Margin % of 18.59% is 387.9% 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 Operating Margin % mean?
A high Operating Margin % can signal that a stock is expensive relative to its fundamentals. Operating margin is the ratio of total operating income to net sales. View historical data on Prosperity Dielectrics Co and its competitors. For the Hardware industry, the median Operating Margin % is 3.81 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Prosperity Dielectrics Co's current Operating Margin % is 18.59%, which is 17% above median its own 10-year median of 15.84. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Prosperity Dielectrics Co stock overvalued right now?
Based on GuruFocus' analysis, Prosperity Dielectrics Co (ROCO:6173) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$55.44, compared to a current price of NT$194.00 — trading 249.9% above its estimated fair value. The current Operating Margin % is 18.59%, which is 17% above median its 10-year median of 15.84 and 387.9% above the Hardware industry median of 3.81. Prosperity Dielectrics Co's overall GF Score™ is 52/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Operating Margin % calculated?
Operating Margin % is calculated from a company's financial statements. For Prosperity Dielectrics Co (ROCO:6173), the current Operating Margin % is 18.59% 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 Prosperity Dielectrics Co (ROCO:6173) Overvalued in 2026?
Based on GuruFocus' analysis, Prosperity Dielectrics Co stock appears to be overvalued.
The current stock price of NT$194.00 is trading 249.9% above its estimated GF Value™ of NT$55.44.
GuruFocus considers Prosperity Dielectrics Co to be Significantly Overvalued.
Key valuation signals for ROCO:6173:
Operating Margin %: 18.59% (17% above median its 10-year median of 15.84)
GF Value™: NT$55.44 vs. price of NT$194.00 (249.9% above fair value)
Industry Position: 387.9% above the Hardware median (#275 of 2476)
No single metric tells the full story. See the ROCO:6173 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Prosperity Dielectrics Co Ltd mainly manufactures, processes and sells multilayer ceramic capacitors (MLCC), chip resistors and ceramic dielectric powders. The company has two segment Taiwan segment, and China segment. The company generates majority of revenue from Taiwan segment. The Group operates in three principal geographical areas - Asia, America and Europe. Its products are Multilayer Ceramic Capacitors includes FK/FH Safety Certified Capacitor, FV High Voltage Capacitor; Chip Resistors includes Current Sensing, Wide Terminal, Automotive, High Voltage; Inductor includes Air Wound Coil, Wire-Wound Ceramic, Chip Inductor, Common Mode Choke; Ceramic Dielectric Powders includes Barium Titanate Powder, MLCC Formulations, Microwave; Varistor includes MutiLayer Varistor Varistor, etc.
52GF Score
Get the complete analysis for ROCO:6173
Operating 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:6173 has been successfully added to your 
