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Luminescence TechnologyROCO:6729 +2.33%77 Operating Margin % is 7.51% as of Dec. 2025, which is 17% above its 10-year median of 6.42. GuruFocus rates ROCO:6729 with a GF Score™ of 77/100 and a GF Value™ of NT$24.68 (Significantly Overvalued). The stock has 2 warning signs investors should review. Among 1,578 Chemicals companies, Luminescence Technology ranks better than 81.5% on this metric.
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.
Luminescence Technology Operating Margin % Related Terms
Luminescence Technology Operating Margin % Historical Data
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The historical data trend for Luminescence Technology's Operating 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 Chemicals subindustry, Luminescence Technology'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.
Luminescence Technology Operating Margin % vs Chemicals Industry
For the Chemicals industry and Basic Materials sector, Luminescence Technology's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Luminescence Technology's Operating Margin % falls into.
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.
Luminescence Technology'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.
Luminescence Technology (ROCO:6729) has a Operating Margin % of 7.51% as of Dec. 2025. Operating margin is the ratio of total operating income to net sales. View historical data on Luminescence Technology and its competitors. This is 17% above median its historical median of 6.42. According to the industry distribution chart, Luminescence Technology ranks #292 out of 1578 companies in the Chemicals industry, placing it in the top 18.5%.
Is Luminescence Technology's Operating Margin % too high?
Luminescence Technology's current Operating Margin % of 7.51% is 17% above median its 10-year median of 6.42. The Chemicals industry median Operating Margin % is 6.03. Luminescence Technology's value of 7.51% is 24.5% above this industry median. Based on the distribution chart, Luminescence Technology ranks #292 out of 1578 companies in the Chemicals industry, which is in the top quartile — a strong position relative to peers. Overall, Luminescence Technology has a GF Score™ of 77/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Luminescence Technology's Operating Margin % compare to DOW?
According to the Chemicals industry distribution chart, Luminescence Technology ranks #292 out of 1578 companies for Operating Margin %. This places Luminescence Technology in the top 19% of its industry — outperforming the majority of peers. The industry median Operating Margin % is 6.03. Luminescence Technology's value of 7.51% is 24.5% above this benchmark. While the company's 10-year median is 6.42 vs. the industry median of 6.03, Luminescence Technology 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 Chemicals company?
The median Operating Margin % among Chemicals companies is 6.03, based on 1,578 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. Luminescence Technology's current Operating Margin % of 7.51% is 24.5% 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 Luminescence Technology and its competitors. For the Chemicals industry, the median Operating Margin % is 6.03 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Luminescence Technology's current Operating Margin % is 7.51%, which is 17% above median its own 10-year median of 6.42. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Luminescence Technology stock overvalued right now?
Based on GuruFocus' analysis, Luminescence Technology (ROCO:6729) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$24.68, compared to a current price of NT$52.70 — trading 113.5% above its estimated fair value. The current Operating Margin % is 7.51%, which is 17% above median its 10-year median of 6.42 and 24.5% above the Chemicals industry median of 6.03. Luminescence Technology's overall GF Score™ is 77/100 with 2 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 Luminescence Technology (ROCO:6729), the current Operating Margin % is 7.51% 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 Luminescence Technology (ROCO:6729) Overvalued in 2026?
Based on GuruFocus' analysis, Luminescence Technology stock appears to be overvalued.
The current stock price of NT$52.70 is trading 113.5% above its estimated GF Value™ of NT$24.68.
GuruFocus considers Luminescence Technology to be Significantly Overvalued.
Key valuation signals for ROCO:6729:
Operating Margin %: 7.51% (17% above median its 10-year median of 6.42)
GF Value™: NT$24.68 vs. price of NT$52.70 (113.5% above fair value)
Industry Position: 24.5% above the Chemicals median (#292 of 1578)
No single metric tells the full story. See the ROCO:6729 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Luminescence Technology Corp is a Taiwan based chemical manufacturing company. The firm's product range consists of OLED material, OPV material, OTFT material, Organic intermediates, Boronic Acid, ITO patterned glass and components among others.
77GF Score
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