Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.
This valuation method assumes that the stock valuation will revert to its historical (10-Year) median in terms of PS Ratio. The reason we use PS Ratio instead of PE Ratio or PB Ratio is because PS Ratio is independent of profit margin, and can be applied to a broader range of situations.
The historical rank and industry rank for Diamond Biotechnology Co's Median PS Value or its related term are showing as below:
ROCO:6815's Price-to-Median-PS-Value is not ranked *
in the Medical Devices & Instruments industry.
Industry Median: 0.71 * Ranked among companies with meaningful Price-to-Median-PS-Value only.
Diamond Biotechnology Co (ROCO:6815) Median PS Value Explanation
This valuation method assumes that the stock valuation will revert to its historical (10-Year) mean in terms of PS Ratio. The reason we use PS Ratio instead of PE Ratio or PB Ratio
is because PS Ratio is independent of profit margin, and can be applied to a broader range of situations.
It also assumes that over time the profit margin is constant. If a company increases its profit margin to a sustainable level, this value might under-estimate its value. If it has permanent declined profit margins, this may over-estimate the company's value.
Diamond Biotechnology Co's Price to Median PS Value for today is calculated as
Price to Median PS Value
=
Share Price
/
Median PS Value
=
29.70
/
0.00
=
* 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.
Diamond Biotechnology Co Median PS Value Related Terms
Diamond Biotechnology Co Median PS Value Historical Data
* 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:6815 vs ABT, SYK, MDT: Median PS Value Comparison
For the Medical Devices subindustry, Diamond Biotechnology Co's Price-to-Median-PS-Value, along with its competitors' market caps and Price-to-Median-PS-Value 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.
Diamond Biotechnology Co Price-to-Median-PS-Value vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, Diamond Biotechnology Co's Price-to-Median-PS-Value distribution charts can be found below:
* The bar in red indicates where Diamond Biotechnology Co's Price-to-Median-PS-Value falls into.
10-Year Median PS Ratio is 0.
For company reported semi-annually, GuruFocus uses latest annual data as the TTM data. Diamond Biotechnology Co's Revenue per Share for the trailing twelve months (TTM) ended in Dec. 2025 was NT$12.697.
* 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.
Diamond Biotechnology Co (ROCO:6815) has a Median PS Value of NT$0.00 as of Jul. 18, 2026. Median price-sales value is the stock value based on a company's 10-year median price-sales ratio, View historical data on Diamond Biotechnology Co and its competitors. According to the industry distribution chart, Diamond Biotechnology Co ranks #999999 out of 336 companies in the Medical Devices & Instruments industry.
Is Diamond Biotechnology Co's Median PS Value too high?
Diamond Biotechnology Co's current Median PS Value is NT$0.00. Based on the distribution chart, Diamond Biotechnology Co ranks #999999 out of 336 companies in the Medical Devices & Instruments industry, which is in the bottom quartile relative to peers. Overall, Diamond Biotechnology Co has a GF Score™ of 80/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Diamond Biotechnology Co's Median PS Value compare to ABT and SYK?
According to the Medical Devices & Instruments industry distribution chart, Diamond Biotechnology Co ranks #999999 out of 336 companies for Median PS Value. This places Diamond Biotechnology Co in the lower half of its industry. The industry median Median PS Value is 0.71. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Median PS Value for a Medical Devices & Instruments company?
The median Median PS Value among Medical Devices & Instruments companies is 0.71, based on 336 companies in the industry. Companies in the top quartile (top 25%) have a Median PS Value significantly above this median, while those in the bottom quartile fall well below. However, Median PS Value should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Median PS Value mean?
A high Median PS Value can signal that a stock is expensive relative to its fundamentals. Median price-sales value is the stock value based on a company's 10-year median price-sales ratio, View historical data on Diamond Biotechnology Co and its competitors. For the Medical Devices & Instruments industry, the median Median PS Value is 0.71 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Diamond Biotechnology Co's current Median PS Value is NT$0.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Diamond Biotechnology Co stock overvalued right now?
Based on GuruFocus' analysis, Diamond Biotechnology Co (ROCO:6815) is currently considered Possible Value Trap. The stock's GF Value™ is NT$48.10, compared to a current price of NT$29.70 — trading 38.3% below its estimated fair value. The current Median PS Value is NT$0.00. Diamond Biotechnology Co's overall GF Score™ is 80/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Median PS Value calculated?
Median PS Value is calculated from a company's financial statements. For Diamond Biotechnology Co (ROCO:6815), the current Median PS Value is NT$0.00 as of Jul. 18, 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 Diamond Biotechnology Co (ROCO:6815) Overvalued in 2026?
Based on GuruFocus' analysis, Diamond Biotechnology Co stock appears to be undervalued.
The current stock price of NT$29.70 is trading 38.3% below its estimated GF Value™ of NT$48.10.
GuruFocus considers Diamond Biotechnology Co to be Possible Value Trap.
Key valuation signals for ROCO:6815:
Median PS Value: NT$0.00
GF Value™: NT$48.10 vs. price of NT$29.70 (38.3% below fair value)
No single metric tells the full story. See the ROCO:6815 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Diamond Biotechnology Co Ltd is engaged in the research and development of medical equipment, and medical consumables. It also manufactures and sells medical beauty-level skincare products.
80GF Score
Get the complete analysis for ROCO:6815
Median PS Value is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
ROCO:6815 has been successfully added to your 
