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Winston Medical Supply CoROCO:6817 -1.02%85 Days Inventory is 139.74 as of Dec. 2025, which is 7% above its 10-year median of 131.06. GuruFocus rates ROCO:6817 with a GF Score™ of 85/100 and a GF Value™ of NT$102.84 (Significantly Undervalued). The stock has 2 warning signs investors should review. Among 921 Drug Manufacturers companies, Winston Medical Supply Co ranks better than 61.02% on this metric.
The historical rank and industry rank for Winston Medical Supply Co's Days Inventory or its related term are showing as below:
ROCO:6817'
s Days Inventory Range Over the Past 10 Years
Min: 107.01 Med: 131.06 Max: 163.23
Current: 138.69
During the past 9 years, Winston Medical Supply Co's highest Days Inventory was 163.23. The lowest was 107.01. And the median was 131.06.
ROCO:6817's Days Inventory is ranked better than 61.02% of 921
companies
in the Drug Manufacturers industry
Industry Median: 164.48
vs ROCO:6817: 138.69
Inventory Turnover measures how fast the company turns over its inventory within a year.
Winston Medical Supply Co's Inventory Turnover for the
six
months ended in Dec. 2025 was 1.31.
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.
Winston Medical Supply Co's Inventory-to-Revenue for the
six
months ended in Dec. 2025 was 0.44.
Winston Medical Supply Co (ROCO:6817) 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.
Winston Medical Supply Co's Inventory Turnover for the
six
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.
Winston Medical Supply Co's Inventory to Revenue for the
six
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.
Winston Medical Supply Co Days Inventory Related Terms
Winston Medical Supply Co Days Inventory 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.
For the Drug Manufacturers - Specialty & Generic subindustry, Winston Medical Supply Co'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.
Winston Medical Supply Co Days Inventory vs Drug Manufacturers Industry
For the Drug Manufacturers industry and Healthcare sector, Winston Medical Supply Co's Days Inventory distribution charts can be found below:
* The bar in red indicates where Winston Medical Supply Co'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.
Winston Medical Supply Co (ROCO:6817) has a Days Inventory of 139.74 as of Dec. 2025. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Winston Medical Supply Co and its competitors. This is near median its historical median of 131.06. Over the past decade, Winston Medical Supply Co's Days Inventory has ranged from 107.01 to 163.23. According to the industry distribution chart, Winston Medical Supply Co ranks #359 out of 921 companies in the Drug Manufacturers industry, placing it in the top 39%.
Is Winston Medical Supply Co's Days Inventory too high?
Winston Medical Supply Co's current Days Inventory of 139.74 is near median its 10-year median of 131.06. Over the past 10 years, this metric has ranged from a low of 107.01 to a high of 163.23. The Drug Manufacturers industry median Days Inventory is 164.48. Winston Medical Supply Co's value of 139.74 is 15% below this industry median. Based on the distribution chart, Winston Medical Supply Co ranks #359 out of 921 companies in the Drug Manufacturers industry, which is above the industry midpoint. Overall, Winston Medical Supply Co has a GF Score™ of 85/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Winston Medical Supply Co's Days Inventory compare to ZTS and UTHR?
According to the Drug Manufacturers industry distribution chart, Winston Medical Supply Co ranks #359 out of 921 companies for Days Inventory. This puts Winston Medical Supply Co in the upper half of its industry. The industry median Days Inventory is 164.48. Winston Medical Supply Co's value of 139.74 is 15% below this benchmark. Historically, Winston Medical Supply Co's own Days Inventory has ranged from 107.01 to 163.23 over the past decade. While the company's 10-year median is 131.06 vs. the industry median of 164.48, Winston Medical Supply Co 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 Drug Manufacturers company?
The median Days Inventory among Drug Manufacturers companies is 164.48, based on 921 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. Winston Medical Supply Co's current Days Inventory of 139.74 is 15% 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 Winston Medical Supply Co and its competitors. For the Drug Manufacturers industry, the median Days Inventory is 164.48 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Winston Medical Supply Co's current Days Inventory is 139.74, which is near median its own 10-year median of 131.06. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Winston Medical Supply Co stock overvalued right now?
Based on GuruFocus' analysis, Winston Medical Supply Co (ROCO:6817) is currently considered Significantly Undervalued. The stock's GF Value™ is NT$102.84, compared to a current price of NT$58.40 — trading 43.2% below its estimated fair value. The current Days Inventory is 139.74, which is near median its 10-year median of 131.06 and 15% below the Drug Manufacturers industry median of 164.48. Winston Medical Supply Co's overall GF Score™ is 85/100 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 Winston Medical Supply Co (ROCO:6817), the current Days Inventory is 139.74 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 Winston Medical Supply Co (ROCO:6817) Overvalued in 2026?
Based on GuruFocus' analysis, Winston Medical Supply Co stock appears to be undervalued.
The current stock price of NT$58.40 is trading 43.2% below its estimated GF Value™ of NT$102.84.
GuruFocus considers Winston Medical Supply Co to be Significantly Undervalued.
Key valuation signals for ROCO:6817:
Days Inventory: 139.74 (near median its 10-year median of 131.06)
GF Value™: NT$102.84 vs. price of NT$58.40 (43.2% below fair value)
Industry Position: 15% below the Drug Manufacturers median (#359 of 921)
No single metric tells the full story. See the ROCO:6817 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Winston Medical Supply Co Ltd is a manufacturer of medical products. It produces sterile ophthalmic preparations, hormone preparations and healthy products.
85GF Score
Get the complete analysis for ROCO:6817
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