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.
Zen VoceROCO:3581 -6.48%56 OCF Margin % is 5.95% as of Dec. 2025, which is 18% above its 10-year median of 5.03. GuruFocus rates ROCO:3581 with a GF Score™ of 56/100 and a GF Value™ of NT$38.01 (Significantly Overvalued). The stock has 2 warning signs investors should review. Among 1,022 Semiconductors companies, Zen Voce ranks worse than 69.67% on this metric.
The historical rank and industry rank for Zen Voce's OCF Margin % or its related term are showing as below:
ROCO:3581'
s OCF Margin % Range Over the Past 10 Years
Min: -7.38 Med: 5.03 Max: 9.2
Current: -0.85
During the past 13 years, the highest OCF Margin % of Zen Voce was 9.20%. The lowest was -7.38%. And the median was 5.03%.
ROCO:3581's OCF Margin % is ranked worse than 69.67% of 1022
companies
in the Semiconductors industry
Industry Median: 9.5
vs ROCO:3581: -0.85
Zen Voce OCF Margin % Related Terms
Zen Voce OCF Margin % Historical Data
* Premium members only.
The historical data trend for Zen Voce's OCF 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.
ROCO:3581 vs NVDA, AVGO, MU: OCF Margin % Comparison
For the Semiconductors subindustry, Zen Voce's OCF Margin %, along with its competitors' market caps and OCF 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.
Zen Voce OCF Margin % vs Semiconductors Industry
For the Semiconductors industry and Technology sector, Zen Voce's OCF Margin % distribution charts can be found below:
* The bar in red indicates where Zen Voce's OCF 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.
Zen Voce (ROCO:3581) has a OCF Margin % of 5.95% as of Dec. 2025. OCF Margin is the ratio of Cash Flow from Operations to Total Revenue. View historical data on Zen Voce and its competitors. This is 18% above median its historical median of 5.03. According to the industry distribution chart, Zen Voce ranks #712 out of 1022 companies in the Semiconductors industry, placing it in the top 69.7%.
Is Zen Voce's OCF Margin % too high?
Zen Voce's current OCF Margin % of 5.95% is 18% above median its 10-year median of 5.03. The Semiconductors industry median OCF Margin % is 9.50. Zen Voce's value of 5.95% is 37.4% below this industry median. Based on the distribution chart, Zen Voce ranks #712 out of 1022 companies in the Semiconductors industry, which is below the industry midpoint. Overall, Zen Voce has a GF Score™ of 56/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Zen Voce's OCF Margin % compare to NVDA and AVGO?
According to the Semiconductors industry distribution chart, Zen Voce ranks #712 out of 1022 companies for OCF Margin %. This places Zen Voce in the lower half of its industry. The industry median OCF Margin % is 9.50. Zen Voce's value of 5.95% is 37.4% below this benchmark. While the company's 10-year median is 5.03 vs. the industry median of 9.50, Zen Voce has consistently been below 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 OCF Margin % for a Semiconductors company?
The median OCF Margin % among Semiconductors companies is 9.50, based on 1,022 companies in the industry. Companies in the top quartile (top 25%) have a OCF Margin % significantly above this median, while those in the bottom quartile fall well below. However, OCF Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Zen Voce's current OCF Margin % of 5.95% is 37.4% below 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 OCF Margin % mean?
A high OCF Margin % can signal that a stock is expensive relative to its fundamentals. OCF Margin is the ratio of Cash Flow from Operations to Total Revenue. View historical data on Zen Voce and its competitors. For the Semiconductors industry, the median OCF Margin % is 9.50 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Zen Voce's current OCF Margin % is 5.95%, which is 18% above median its own 10-year median of 5.03. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Zen Voce stock overvalued right now?
Based on GuruFocus' analysis, Zen Voce (ROCO:3581) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$38.01, compared to a current price of NT$115.50 — trading 203.9% above its estimated fair value. The current OCF Margin % is 5.95%, which is 18% above median its 10-year median of 5.03 and 37.4% below the Semiconductors industry median of 9.50. Zen Voce's overall GF Score™ is 56/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is OCF Margin % calculated?
OCF Margin % is calculated from a company's financial statements. For Zen Voce (ROCO:3581), the current OCF Margin % is 5.95% 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 Zen Voce (ROCO:3581) Overvalued in 2026?
Based on GuruFocus' analysis, Zen Voce stock appears to be overvalued.
The current stock price of NT$115.50 is trading 203.9% above its estimated GF Value™ of NT$38.01.
GuruFocus considers Zen Voce to be Significantly Overvalued.
Key valuation signals for ROCO:3581:
OCF Margin %: 5.95% (18% above median its 10-year median of 5.03)
GF Value™: NT$38.01 vs. price of NT$115.50 (203.9% above fair value)
Industry Position: 37.4% below the Semiconductors median (#712 of 1022)
No single metric tells the full story. See the ROCO:3581 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Zen Voce Corp is a Taiwan based company engaged in the business of providing semiconductor, optoelectronics and MEMS and LCD's equipment. It offers equipment products which include IC packaging machine design and manufacture of bumping, wafer cutting machine and cleaning machine design and manufacturing, and board cutting machine and cleaning machine design and manufacturing. The test products provided by the company includes Wafer test probe card PCB design and manufacturing, IC test HIFIX and CHANG KIT design and manufacturing, SOCKET IC design and manufacturing test, Acting IC HANDLER, and Acting SOCKET IC burn-in test.
56GF Score
Get the complete analysis for ROCO:3581
OCF 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:3581 has been successfully added to your 
