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Keystone MicrotechROCO:6683 -8.16%79 Pretax Margin % is 31.80% as of Dec. 2025, which is 0% above its 10-year median of 31.77. GuruFocus rates ROCO:6683 with a GF Score™ of 79/100 and a GF Value™ of NT$486.03 (Significantly Overvalued). The stock has 2 warning signs investors should review. Among 1,023 Semiconductors companies, Keystone Microtech ranks better than 86.31% on this metric.
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.
Keystone Microtech Pretax Margin % Related Terms
Keystone Microtech Pretax Margin % Historical Data
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The historical data trend for Keystone Microtech'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:6683 vs AMAT, LRCX, KLAC: Pretax Margin % Comparison
For the Semiconductor Equipment & Materials subindustry, Keystone Microtech'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.
Keystone Microtech Pretax Margin % vs Semiconductors Industry
For the Semiconductors industry and Technology sector, Keystone Microtech's Pretax Margin % distribution charts can be found below:
* The bar in red indicates where Keystone Microtech'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.
Keystone Microtech (ROCO:6683) has a Pretax Margin % of 31.80% as of Dec. 2025. Pre-Tax margin is the ratio of total pre-tax income to net sales. View historical data on Keystone Microtech and its competitors. This is near median its historical median of 31.77. Over the past decade, Keystone Microtech's Pretax Margin % has ranged from 23.14 to 35.55. According to the industry distribution chart, Keystone Microtech ranks #140 out of 1023 companies in the Semiconductors industry, placing it in the top 13.7%.
Is Keystone Microtech's Pretax Margin % too high?
Keystone Microtech's current Pretax Margin % of 31.80% is near median its 10-year median of 31.77. Over the past 10 years, this metric has ranged from a low of 23.14 to a high of 35.55. The Semiconductors industry median Pretax Margin % is 5.07. Keystone Microtech's value of 31.80% is 527.2% above this industry median. Based on the distribution chart, Keystone Microtech ranks #140 out of 1023 companies in the Semiconductors industry, which is in the top quartile — a strong position relative to peers. Overall, Keystone Microtech has a GF Score™ of 79/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Keystone Microtech's Pretax Margin % compare to AMAT and LRCX?
According to the Semiconductors industry distribution chart, Keystone Microtech ranks #140 out of 1023 companies for Pretax Margin %. This places Keystone Microtech in the top 14% of its industry — outperforming the majority of peers. The industry median Pretax Margin % is 5.07. Keystone Microtech's value of 31.80% is 527.2% above this benchmark. Historically, Keystone Microtech's own Pretax Margin % has ranged from 23.14 to 35.55 over the past decade. While the company's 10-year median is 31.77 vs. the industry median of 5.07, Keystone Microtech 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 Pretax Margin % for a Semiconductors company?
The median Pretax Margin % among Semiconductors companies is 5.07, 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. Keystone Microtech's current Pretax Margin % of 31.80% is 527.2% 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 Keystone Microtech and its competitors. For the Semiconductors industry, the median Pretax Margin % is 5.07 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Keystone Microtech's current Pretax Margin % is 31.80%, which is near median its own 10-year median of 31.77. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Keystone Microtech stock overvalued right now?
Based on GuruFocus' analysis, Keystone Microtech (ROCO:6683) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$486.03, compared to a current price of NT$1,350.00 — trading 177.8% above its estimated fair value. The current Pretax Margin % is 31.80%, which is near median its 10-year median of 31.77 and 527.2% above the Semiconductors industry median of 5.07. Keystone Microtech's overall GF Score™ is 79/100 with 2 warning signs to review. 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 Keystone Microtech (ROCO:6683), the current Pretax Margin % is 31.80% 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 Keystone Microtech (ROCO:6683) Overvalued in 2026?
Based on GuruFocus' analysis, Keystone Microtech stock appears to be overvalued.
The current stock price of NT$1,350.00 is trading 177.8% above its estimated GF Value™ of NT$486.03.
GuruFocus considers Keystone Microtech to be Significantly Overvalued.
Key valuation signals for ROCO:6683:
Pretax Margin %: 31.80% (near median its 10-year median of 31.77)
GF Value™: NT$486.03 vs. price of NT$1,350.00 (177.8% above fair value)
Industry Position: 527.2% above the Semiconductors median (#140 of 1023)
No single metric tells the full story. See the ROCO:6683 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Keystone Microtech Corp operates as a semiconductor device manufacturing company. The company is mainly an important operating department engaged in the manufacture and sale of various circuit testing solutions for semiconductors, including IC front-end test solutions (probe cards and substrates), IC back-end test solutions (load boards and burn-in boards), and other related testing boards. Geographically, it operates in Taiwan and other regions, out of which the majority of its revenue is derived from Taiwan.
79GF Score
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