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.
Soiken HoldingsTSE:2385 -2.21%58 Days Inventory is 137.31 as of Dec. 2025, which is 17% above its 10-year median of 117.75. GuruFocus rates TSE:2385 with a GF Score™ of 58/100 and a GF Value™ of 円118.58 (Significantly Overvalued). The stock has 1 warning sign investors should review. Among 637 Biotechnology companies, Soiken Holdings ranks better than 62.01% on this metric.
The historical rank and industry rank for Soiken Holdings's Days Inventory or its related term are showing as below:
TSE:2385'
s Days Inventory Range Over the Past 10 Years
Min: 96.77 Med: 117.75 Max: 164.83
Current: 132.42
During the past 13 years, Soiken Holdings's highest Days Inventory was 164.83. The lowest was 96.77. And the median was 117.75.
TSE:2385's Days Inventory is ranked better than 62.01% of 637
companies
in the Biotechnology industry
Industry Median: 180.38
vs TSE:2385: 132.42
Soiken Holdings's Days Inventory
increased
from Dec. 2024 (0.00) to Dec. 2025 (137.31).
It might indicate that Soiken Holdings's sales slowed down.
Inventory Turnover measures how fast the company turns over its inventory within a year.
Soiken Holdings's Inventory Turnover for the
three
months ended in Dec. 2025 was 0.66.
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.
Soiken Holdings's Inventory-to-Revenue for the
three
months ended in Dec. 2025 was 0.77.
Soiken Holdings (TSE:2385) 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.
Soiken Holdings'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.
Soiken Holdings'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.
Soiken Holdings Days Inventory Related Terms
Soiken Holdings Days Inventory Historical Data
* Premium members only.
The historical data trend for Soiken Holdings'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.
TSE:2385 vs VRTX, REGN, RVMD: Days Inventory Comparison
For the Biotechnology subindustry, Soiken Holdings'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.
Soiken Holdings Days Inventory vs Biotechnology Industry
For the Biotechnology industry and Healthcare sector, Soiken Holdings's Days Inventory distribution charts can be found below:
* The bar in red indicates where Soiken Holdings'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.
Soiken Holdings (TSE:2385) has a Days Inventory of 137.31 as of Dec. 2025. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Soiken Holdings and its competitors. This is 17% above median its historical median of 117.75. Over the past decade, Soiken Holdings' Days Inventory has ranged from 96.77 to 164.83. According to the industry distribution chart, Soiken Holdings ranks #242 out of 637 companies in the Biotechnology industry, placing it in the top 38%.
Is Soiken Holdings' Days Inventory too high?
Soiken Holdings' current Days Inventory of 137.31 is 17% above median its 10-year median of 117.75. Over the past 10 years, this metric has ranged from a low of 96.77 to a high of 164.83. The Biotechnology industry median Days Inventory is 180.38. Soiken Holdings' value of 137.31 is 23.9% below this industry median. Based on the distribution chart, Soiken Holdings ranks #242 out of 637 companies in the Biotechnology industry, which is above the industry midpoint. Overall, Soiken Holdings has a GF Score™ of 58/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Soiken Holdings' Days Inventory compare to VRTX and REGN?
According to the Biotechnology industry distribution chart, Soiken Holdings ranks #242 out of 637 companies for Days Inventory. This puts Soiken Holdings in the upper half of its industry. The industry median Days Inventory is 180.38. Soiken Holdings' value of 137.31 is 23.9% below this benchmark. Historically, Soiken Holdings' own Days Inventory has ranged from 96.77 to 164.83 over the past decade. While the company's 10-year median is 117.75 vs. the industry median of 180.38, Soiken Holdings 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 Biotechnology company?
The median Days Inventory among Biotechnology companies is 180.38, based on 637 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. Soiken Holdings's current Days Inventory of 137.31 is 23.9% 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 Soiken Holdings and its competitors. For the Biotechnology industry, the median Days Inventory is 180.38 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Soiken Holdings's current Days Inventory is 137.31, which is 17% above median its own 10-year median of 117.75. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Soiken Holdings stock overvalued right now?
Based on GuruFocus' analysis, Soiken Holdings (TSE:2385) is currently considered Significantly Overvalued. The stock's GF Value™ is 円118.58, compared to a current price of 円221.00 — trading 86.4% above its estimated fair value. The current Days Inventory is 137.31, which is 17% above median its 10-year median of 117.75 and 23.9% below the Biotechnology industry median of 180.38. Soiken Holdings' overall GF Score™ is 58/100 with 1 warning sign 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 Soiken Holdings (TSE:2385), the current Days Inventory is 137.31 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 Soiken Holdings (TSE:2385) Overvalued in 2026?
Based on GuruFocus' analysis, Soiken Holdings stock appears to be overvalued.
The current stock price of 円221.00 is trading 86.4% above its estimated GF Value™ of 円118.58.
GuruFocus considers Soiken Holdings to be Significantly Overvalued.
Key valuation signals for TSE:2385:
Days Inventory: 137.31 (17% above median its 10-year median of 117.75)
GF Value™: 円118.58 vs. price of 円221.00 (86.4% above fair value)
Industry Position: 23.9% below the Biotechnology median (#242 of 637)
No single metric tells the full story. See the TSE:2385 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Soiken Holdings Inc operates as a biotechnology company in Japan. It provides clinical testing for pharmaceutical and food manufacturers that develop drugs and health food products based on biomarkers. It is involved in the marketing research and post-marketing surveillance of health supplements.
58GF Score
Get the complete analysis for TSE:2385
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
TSE:2385 has been successfully added to your 
