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Pre-Tax margin is calculated as Pre-Tax Income divided by its Revenue. GCS Holdings's Pre-Tax Income for the
three
months ended in Mar. 2026 was NT$246 Mil. GCS Holdings's Revenue for the
three
months ended in Mar. 2026 was NT$715 Mil. Therefore, GCS Holdings's pretax margin for the quarter that ended in Mar. 2026 was 34.40%.
The historical rank and industry rank for GCS Holdings's Pretax Margin % or its related term are showing as below:
ROCO:4991'
s Pretax Margin % Range Over the Past 10 Years
Min: -71.35 Med: -3.14 Max: 22.02
Current: 13.88
ROCO:4991's Pretax Margin % is ranked worse than 62.27% of 1023
companies
in the Semiconductors industry
Industry Median: 5.04
vs ROCO:4991: 13.88
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.
GCS Holdings Pretax Margin % Related Terms
GCS Holdings Pretax Margin % Historical Data
* Premium members only.
The historical data trend for GCS Holdings'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.
ROCO:4991 vs AMAT, LRCX, KLAC: Pretax Margin % Comparison
For the Semiconductor Equipment & Materials subindustry, GCS Holdings'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.
GCS Holdings Pretax Margin % vs Semiconductors Industry
For the Semiconductors industry and Technology sector, GCS Holdings's Pretax Margin % distribution charts can be found below:
* The bar in red indicates where GCS Holdings'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.
GCS Holdings (ROCO:4991) has a Pretax Margin % of 34.40% as of Mar. 2026. Pre-Tax margin is the ratio of total pre-tax income to net sales. View historical data on GCS Holdings and its competitors. According to the industry distribution chart, GCS Holdings ranks #637 out of 1023 companies in the Semiconductors industry, placing it in the top 62.3%.
Is GCS Holdings' Pretax Margin % too high?
GCS Holdings' current Pretax Margin % is 34.40%. The Semiconductors industry median Pretax Margin % is 5.04. GCS Holdings' value of 34.40% is 582.5% above this industry median. Based on the distribution chart, GCS Holdings ranks #637 out of 1023 companies in the Semiconductors industry, which is below the industry midpoint. 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' Pretax Margin % compare to AMAT and LRCX?
According to the Semiconductors industry distribution chart, GCS Holdings ranks #637 out of 1023 companies for Pretax Margin %. This places GCS Holdings in the lower half of its industry. The industry median Pretax Margin % is 5.04. GCS Holdings' value of 34.40% is 582.5% above this benchmark. 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 Semiconductors company?
The median Pretax Margin % among Semiconductors companies is 5.04, based on 1,023 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. GCS Holdings's current Pretax Margin % of 34.40% is 582.5% 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 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 GCS Holdings and its competitors. For the Semiconductors industry, the median Pretax Margin % is 5.04 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. GCS Holdings's current Pretax Margin % is 34.40%. 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 Pretax Margin % is 34.40% and 582.5% above the Semiconductors industry median of 5.04. 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 Pretax Margin % calculated?
Pretax Margin % is calculated from a company's financial statements. For GCS Holdings (ROCO:4991), the current Pretax Margin % is 34.40% 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:
Pretax Margin %: 34.40%
GF Value™: NT$111.20 vs. price of NT$382.50 (244% above fair value)
Industry Position: 582.5% above the Semiconductors median (#637 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
Get the complete analysis for ROCO:4991
Pretax Margin % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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