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Keystone MicrotechROCO:6683 -9.94%79 PS Ratio is 9.90 as of Jul. 30, 2026, which is 76% above its 10-year median of 5.62. GuruFocus rates ROCO:6683 with a GF Score™ of 79/100 and a GF Value™ of NT$513.77 (Significantly Overvalued). The stock has 2 warning signs investors should review. Among 1,019 Semiconductors companies, Keystone Microtech ranks worse than 79.69% on this metric.
The PS Ratio, or Price-to-Sales ratio, or Price/Sales, is a financial ratio used to compare a company's market price to its Revenue per Share. As of today, Keystone Microtech's share price is NT$843.00.
Keystone Microtech's Revenue per Share for the trailing twelve months (TTM) ended in Mar. 2026 was NT$85.14. Hence, Keystone Microtech's PS Ratio for today is 9.90.
The historical rank and industry rank for Keystone Microtech's PS Ratio or its related term are showing as below:
ROCO:6683'
s PS Ratio Range Over the Past 10 Years
Min: 2.62 Med: 5.62 Max: 25.96
Current: 9.91
During the past 12 years, Keystone Microtech's highest PS Ratio was 25.96. The lowest was 2.62. And the median was 5.62.
ROCO:6683's PS Ratio is ranked worse than 79.69% of 1019
companies
in the Semiconductors industry
Industry Median: 3.42
vs ROCO:6683: 9.91
Keystone Microtech Corp has shown predictable revenue and earnings growth.
During the past 12 months, the average Revenue per Share Growth Rate of Keystone Microtech was 29.50% per year.
During the past 3 years, the average Revenue per Share Growth Rate was 11.60% per year.
During the past 5 years, the average Revenue per Share Growth Rate was 9.20% per year.
During the past 10 years, the average Revenue per Share Growth Rate was 12.80% per year.
During the past 12 years, Keystone Microtech's highest 3-Year average Revenue per Share Growth Rate was 28.00% per year. The lowest was -1.00% per year. And the median was 8.35% per year.
Keystone Microtech (ROCO:6683) PS Ratio Explanation
The PS Ratio is an excellent valuation indicator if you want to compare a stock with its historical valuation or with the stocks in the same industry. The PS Ratio works especially well when you want to compare the stock's current valuation with its historical valuation. The PS Ratio is a great valuation tool for evaluating cyclical businesses where the PE Ratio works poorly. It works the best when comparing the current valuation with the historical valuation because over time, a company's profit margin tends to revert to the mean.
When the PS Ratio is applied to the whole stock market, it can be used to evaluate the current market valuation and projected returns. In this case, the price is the total market cap of all stocks that are traded, and sales are the GDP of the country. This is how Warren Buffett estimates the broad market valuation and project future returns.
The PS Ratio does not tell you how cheap or expensive the stock is. It cannot be used to compare companies in different industries. It works better for companies within the same industry because these companies tend to have similar capital structures and profit margins. It works the best when comparing a company with itself in the past.
Keystone Microtech PS Ratio Related Terms
Keystone Microtech PS Ratio Historical Data
* Premium members only.
The historical data trend for Keystone Microtech's PS Ratio 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: PS Ratio Comparison
For the Semiconductor Equipment & Materials subindustry, Keystone Microtech's PS Ratio, along with its competitors' market caps and PS Ratio 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 PS Ratio vs Semiconductors Industry
For the Semiconductors industry and Technology sector, Keystone Microtech's PS Ratio distribution charts can be found below:
* The bar in red indicates where Keystone Microtech's PS Ratio falls into.
The PS Ratio, or Price-to-Sales ratio, or Price/Sales, is a financial ratio used to compare a company's market price to its Revenue per Share. It is a ratio widely used to value stocks and it was first used by Ken Fisher.
Keystone Microtech's Share Price of today is NT$843.00. Keystone Microtech's Revenue per Share for the trailing twelve months (TTM) ended in Mar. 2026 adds up the quarterly data reported by the company within the most recent 12 months, which was NT$85.14.
* 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.
It can also be calculated from the numbers for the whole company:
Keystone Microtech (ROCO:6683) has a PS Ratio of 9.90 as of Jul. 30, 2026. Price-to-Sales ratio is the ratio of share price to a company's revenue per share. View historical data on Keystone Microtech and its competitors. This is 76% above median its historical median of 5.62. Over the past decade, Keystone Microtech's PS Ratio has ranged from 2.62 to 25.96. According to the industry distribution chart, Keystone Microtech ranks #812 out of 1019 companies in the Semiconductors industry, placing it in the top 79.7%.
Is Keystone Microtech's PS Ratio too high?
Keystone Microtech's current PS Ratio of 9.90 is 76% above median its 10-year median of 5.62. Over the past 10 years, this metric has ranged from a low of 2.62 to a high of 25.96. The Semiconductors industry median PS Ratio is 3.42. Keystone Microtech's value of 9.90 is 189.5% above this industry median. Based on the distribution chart, Keystone Microtech ranks #812 out of 1019 companies in the Semiconductors industry, which is in the bottom quartile 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 PS Ratio compare to AMAT and LRCX?
According to the Semiconductors industry distribution chart, Keystone Microtech ranks #812 out of 1019 companies for PS Ratio. This places Keystone Microtech in the lower half of its industry. The industry median PS Ratio is 3.42. Keystone Microtech's value of 9.90 is 189.5% above this benchmark. Historically, Keystone Microtech's own PS Ratio has ranged from 2.62 to 25.96 over the past decade. While the company's 10-year median is 5.62 vs. the industry median of 3.42, 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 PS Ratio for a Semiconductors company?
The median PS Ratio among Semiconductors companies is 3.42, based on 1,019 companies in the industry. Companies in the top quartile (top 25%) have a PS Ratio significantly above this median, while those in the bottom quartile fall well below. However, PS Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Keystone Microtech's current PS Ratio of 9.90 is 189.5% 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 PS Ratio mean?
A high PS Ratio can signal that a stock is expensive relative to its fundamentals. Price-to-Sales ratio is the ratio of share price to a company's revenue per share. View historical data on Keystone Microtech and its competitors. For the Semiconductors industry, the median PS Ratio is 3.42 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Keystone Microtech's current PS Ratio is 9.90, which is 76% above median its own 10-year median of 5.62. 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$513.77, compared to a current price of NT$843.00 — trading 64.1% above its estimated fair value. The current PS Ratio is 9.90, which is 76% above median its 10-year median of 5.62 and 189.5% above the Semiconductors industry median of 3.42. 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 PS Ratio calculated?
PS Ratio is calculated from a company's financial statements. For Keystone Microtech (ROCO:6683), the current PS Ratio is 9.90 as of Jul. 30, 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 Keystone Microtech (ROCO:6683) Overvalued in 2026?
Based on GuruFocus' analysis, Keystone Microtech stock appears to be overvalued.
The current stock price of NT$843.00 is trading 64.1% above its estimated GF Value™ of NT$513.77.
GuruFocus considers Keystone Microtech to be Significantly Overvalued.
Key valuation signals for ROCO:6683:
PS Ratio: 9.90 (76% above median its 10-year median of 5.62)
GF Value™: NT$513.77 vs. price of NT$843.00 (64.1% above fair value)
Industry Position: 189.5% above the Semiconductors median (#812 of 1019)
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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