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GCS HoldingsROCO:4991 +9.91%62 Operating Margin % is 25.20% as of Mar. 2026, which is 72% above its 10-year median of 14.64. GuruFocus rates ROCO:4991 with a GF Score™ of 62/100 and a GF Value™ of NT$111.20 (Significantly Overvalued). Among 1,023 Semiconductors companies, GCS Holdings ranks better than 79.08% on this metric.
Operating Margin % is calculated as Operating Income divided by its Revenue. GCS Holdings's Operating Income for the
three
months ended in Mar. 2026 was NT$180 Mil. GCS Holdings's Revenue for the
three
months ended in Mar. 2026 was NT$715 Mil. Therefore, GCS Holdings's Operating Margin % for the quarter that ended in Mar. 2026 was 25.20%.
The historical rank and industry rank for GCS Holdings's Operating Margin % or its related term are showing as below:
ROCO:4991'
s Operating Margin % Range Over the Past 10 Years
Min: -17.34 Med: 14.64 Max: 23.34
Current: 22.36
ROCO:4991's Operating Margin % is ranked better than 79.08% of 1023
companies
in the Semiconductors industry
Industry Median: 5.33
vs ROCO:4991: 22.36
GCS Holdings's 5-Year Average Operating Margin % Growth Rate was 0.00% per year.
GCS Holdings's Operating Income for the
three
months ended in Mar. 2026 was NT$180 Mil.
Its Operating Income for the trailing twelve months (TTM) ended in Mar. 2026 was NT$545 Mil.
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.
GCS Holdings Operating Margin % Related Terms
GCS Holdings Operating Margin % Historical Data
* Premium members only.
The historical data trend for GCS Holdings'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.
ROCO:4991 vs AMAT, LRCX, KLAC: Operating Margin % Comparison
For the Semiconductor Equipment & Materials subindustry, GCS Holdings'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.
GCS Holdings Operating Margin % vs Semiconductors Industry
For the Semiconductors industry and Technology sector, GCS Holdings's Operating Margin % distribution charts can be found below:
* The bar in red indicates where GCS Holdings'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.
GCS Holdings'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.
GCS Holdings (ROCO:4991) has a Operating Margin % of 25.20% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on GCS Holdings and its competitors. This is 72% above median its historical median of 14.64. According to the industry distribution chart, GCS Holdings ranks #214 out of 1023 companies in the Semiconductors industry, placing it in the top 20.9%.
Is GCS Holdings' Operating Margin % too high?
GCS Holdings' current Operating Margin % of 25.20% is 72% above median its 10-year median of 14.64. The Semiconductors industry median Operating Margin % is 5.33. GCS Holdings' value of 25.20% is 372.8% above this industry median. Based on the distribution chart, GCS Holdings ranks #214 out of 1023 companies in the Semiconductors industry, which is in the top quartile — a strong position relative to peers. Overall, GCS Holdings has a GF Score™ of 62/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does GCS Holdings' Operating Margin % compare to AMAT and LRCX?
According to the Semiconductors industry distribution chart, GCS Holdings ranks #214 out of 1023 companies for Operating Margin %. This places GCS Holdings in the top 21% of its industry — outperforming the majority of peers. The industry median Operating Margin % is 5.33. GCS Holdings' value of 25.20% is 372.8% above this benchmark. While the company's 10-year median is 14.64 vs. the industry median of 5.33, GCS Holdings 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 Semiconductors company?
The median Operating Margin % among Semiconductors companies is 5.33, based on 1,023 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. GCS Holdings's current Operating Margin % of 25.20% is 372.8% 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 GCS Holdings and its competitors. For the Semiconductors industry, the median Operating Margin % is 5.33 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. GCS Holdings's current Operating Margin % is 25.20%, which is 72% above median its own 10-year median of 14.64. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is GCS Holdings stock overvalued right now?
Based on GuruFocus' analysis, GCS Holdings (ROCO:4991) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$111.20, compared to a current price of NT$382.50 — trading 244% above its estimated fair value. The current Operating Margin % is 25.20%, which is 72% above median its 10-year median of 14.64 and 372.8% above the Semiconductors industry median of 5.33. GCS Holdings' overall GF Score™ is 62/100. 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 GCS Holdings (ROCO:4991), the current Operating Margin % is 25.20% as of Mar. 2026. 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 GCS Holdings (ROCO:4991) Overvalued in 2026?
Based on GuruFocus' analysis, GCS Holdings stock appears to be overvalued.
The current stock price of NT$382.50 is trading 244% above its estimated GF Value™ of NT$111.20.
GuruFocus considers GCS Holdings to be Significantly Overvalued.
Key valuation signals for ROCO:4991:
Operating Margin %: 25.20% (72% above median its 10-year median of 14.64)
GF Value™: NT$111.20 vs. price of NT$382.50 (244% above fair value)
Industry Position: 372.8% above the Semiconductors median (#214 of 1023)
No single metric tells the full story. See the ROCO:4991 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
GCS Holdings Inc through its subsidiaries, is engaged in the manufacturing of compound semiconductor wafers and foundry-related services as well as the licensing of intellectual property. It is also engaged in the research, development, manufacture, and sales of optoelectronics technology products. Its portfolio offerings include Radio Frequency Integrated Circuits (RFIC) and millimeter-wave integrated circuits for the wireless markets, power devices for power electronics, and Photodetectors and Lasers for the optical communications market. Geographically, the company generates a majority of its revenue from China and the rest from the United States, Taiwan, and other markets.
62GF Score
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