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.
Bioptik TechnologyROCO:4161 -0.65%70 Days Inventory is 112.09 as of Dec. 2025, which is 13% below its 10-year median of 129.16. GuruFocus rates ROCO:4161 with a GF Score™ of 70/100 and a GF Value™ of NT$27.80 (Modestly Undervalued). The stock has 2 warning signs investors should review. Among 787 Medical Devices & Instruments companies, Bioptik Technology ranks better than 70.39% on this metric.
The historical rank and industry rank for Bioptik Technology's Days Inventory or its related term are showing as below:
ROCO:4161'
s Days Inventory Range Over the Past 10 Years
Min: 119.89 Med: 129.16 Max: 167.68
Current: 127.43
During the past 13 years, Bioptik Technology's highest Days Inventory was 167.68. The lowest was 119.89. And the median was 129.16.
ROCO:4161's Days Inventory is ranked better than 70.39% of 787
companies
in the Medical Devices & Instruments industry
Industry Median: 179.47
vs ROCO:4161: 127.43
Bioptik Technology's Days Inventory
declined
from Dec. 2024 (126.34) to Dec. 2025 (112.09).
Inventory Turnover measures how fast the company turns over its inventory within a year.
Bioptik Technology's Inventory Turnover for the
three
months ended in Dec. 2025 was 0.81.
Inventory-to-Revenue determines the ability of a company to manage their inventory levels. It measures the percentage of Inventories the company currently has on hand to support the current amount of Revenue.
Bioptik Technology's Inventory-to-Revenue for the
three
months ended in Dec. 2025 was 0.86.
Bioptik Technology (ROCO:4161) Days Inventory Explanation
Days Inventory indicates the liquidity of the inventory. Generally, a lower Days Inventory is preferred as it indicates a shorter duration to clear off the inventory. An increase of the ratio may indicate the company's sales slowed. Similar ratios related to Days Inventory are:
1. Inventory Turnover measures how fast the company turns over its inventory within a year.
Bioptik Technology's Inventory Turnover for the
three
months ended in Dec. 2025 is calculated as
2. Inventory-to-Revenue determines the ability of a company to manage their inventory levels. It measures the percentage of Inventories the company currently has on hand to support the current amount of Revenue.
Bioptik Technology's Inventory to Revenue for the
three
months 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.
Be Aware
A lot of business are seasonable. It makes more sense to compare Days Inventory from the same period in the previous year instead of from the previous quarter.
Bioptik Technology Days Inventory Related Terms
Bioptik Technology Days Inventory Historical Data
* Premium members only.
The historical data trend for Bioptik Technology's Days Inventory 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:4161 vs ABT, SYK, MDT: Days Inventory Comparison
For the Medical Devices subindustry, Bioptik Technology's Days Inventory, along with its competitors' market caps and Days Inventory 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.
Bioptik Technology Days Inventory vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, Bioptik Technology's Days Inventory distribution charts can be found below:
* The bar in red indicates where Bioptik Technology's Days Inventory 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.
Bioptik Technology (ROCO:4161) has a Days Inventory of 112.09 as of Dec. 2025. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Bioptik Technology and its competitors. This is 13% below median its historical median of 129.16. Over the past decade, Bioptik Technology's Days Inventory has ranged from 119.89 to 167.68. According to the industry distribution chart, Bioptik Technology ranks #233 out of 787 companies in the Medical Devices & Instruments industry, placing it in the top 29.6%.
Is Bioptik Technology's Days Inventory too high?
Bioptik Technology's current Days Inventory of 112.09 is 13% below median its 10-year median of 129.16. Over the past 10 years, this metric has ranged from a low of 119.89 to a high of 167.68. The Medical Devices & Instruments industry median Days Inventory is 179.47. Bioptik Technology's value of 112.09 is 37.5% below this industry median. Based on the distribution chart, Bioptik Technology ranks #233 out of 787 companies in the Medical Devices & Instruments industry, which is above the industry midpoint. Overall, Bioptik Technology has a GF Score™ of 70/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Bioptik Technology's Days Inventory compare to ABT and SYK?
According to the Medical Devices & Instruments industry distribution chart, Bioptik Technology ranks #233 out of 787 companies for Days Inventory. This puts Bioptik Technology in the upper half of its industry. The industry median Days Inventory is 179.47. Bioptik Technology's value of 112.09 is 37.5% below this benchmark. Historically, Bioptik Technology's own Days Inventory has ranged from 119.89 to 167.68 over the past decade. While the company's 10-year median is 129.16 vs. the industry median of 179.47, Bioptik Technology has consistently been below 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 Days Inventory for a Medical Devices & Instruments company?
The median Days Inventory among Medical Devices & Instruments companies is 179.47, based on 787 companies in the industry. Companies in the top quartile (top 25%) have a Days Inventory significantly above this median, while those in the bottom quartile fall well below. However, Days Inventory should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Bioptik Technology's current Days Inventory of 112.09 is 37.5% below 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 Days Inventory mean?
A high Days Inventory can signal that a stock is expensive relative to its fundamentals. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Bioptik Technology and its competitors. For the Medical Devices & Instruments industry, the median Days Inventory is 179.47 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Bioptik Technology's current Days Inventory is 112.09, which is 13% below median its own 10-year median of 129.16. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Bioptik Technology stock overvalued right now?
Based on GuruFocus' analysis, Bioptik Technology (ROCO:4161) is currently considered Modestly Undervalued. The stock's GF Value™ is NT$27.80, compared to a current price of NT$22.85 — trading 17.8% below its estimated fair value. The current Days Inventory is 112.09, which is 13% below median its 10-year median of 129.16 and 37.5% below the Medical Devices & Instruments industry median of 179.47. Bioptik Technology's overall GF Score™ is 70/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Days Inventory calculated?
Days Inventory is calculated from a company's financial statements. For Bioptik Technology (ROCO:4161), the current Days Inventory is 112.09 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 Bioptik Technology (ROCO:4161) Overvalued in 2026?
Based on GuruFocus' analysis, Bioptik Technology stock appears to be undervalued.
The current stock price of NT$22.85 is trading 17.8% below its estimated GF Value™ of NT$27.80.
GuruFocus considers Bioptik Technology to be Modestly Undervalued.
Key valuation signals for ROCO:4161:
Days Inventory: 112.09 (13% below median its 10-year median of 129.16)
GF Value™: NT$27.80 vs. price of NT$22.85 (17.8% below fair value)
Industry Position: 37.5% below the Medical Devices & Instruments median (#233 of 787)
No single metric tells the full story. See the ROCO:4161 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Bioptik Technology Inc is a Taiwan-based company engaged in the research, development, production, and sale of medical devices and reagents. The company is also focused on developing skin care products and aims to engage in developing bioenergy, Astaxanthin, and Cellulose Bioethanol. It is involved in the business areas of Home care medical devices, Skincare- Its own brand, Dietary supplement OEM and ODM, Skincare- OEM and ODM, and Biodiesel. In the Home care business area, the company provides Easy Touch blood glucose monitoring, and blood cholesterol and uric acid monitoring systems, as well as its strips.
70GF Score
Get the complete analysis for ROCO:4161
Days Inventory 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:4161 has been successfully added to your 
