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.
Alsok CoTSE:2331 +1.26%93 Days Inventory is 12.09 as of Mar. 2026, which is 53% above its 10-year median of 7.89. GuruFocus rates TSE:2331 with a GF Score™ of 93/100 and a GF Value™ of 円1,174.10 (Fairly Valued). The stock has 4 warning signs investors should review. Among 673 Business Services companies, Alsok Co ranks better than 64.19% on this metric.
Days Inventory is also known as Days Sales of Inventory (DSI). Alsok Co's Average Total Inventories for the
three
months ended in Mar. 2026 was 円15,888 Mil. Alsok Co's Cost of Goods Sold for the
three
months ended in Mar. 2026 was 円119,886 Mil.
Hence, Alsok Co's Days Inventory for the
three
months ended in Mar. 2026 was 12.09.
The historical rank and industry rank for Alsok Co's Days Inventory or its related term are showing as below:
TSE:2331'
s Days Inventory Range Over the Past 10 Years
Min: 6.57 Med: 7.89 Max: 12.33
Current: 12.33
During the past 13 years, Alsok Co's highest Days Inventory was 12.33. The lowest was 6.57. And the median was 7.89.
TSE:2331's Days Inventory is ranked better than 64.19% of 673
companies
in the Business Services industry
Industry Median: 25.28
vs TSE:2331: 12.33
Alsok Co's Days Inventory
increased
from Mar. 2025 (11.68) to Mar. 2026 (12.09).
It might indicate that Alsok Co's sales slowed down.
Inventory Turnover measures how fast the company turns over its inventory within a year.
Alsok Co's Inventory Turnover for the
three
months ended in Mar. 2026 was 7.55.
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.
Alsok Co's Inventory-to-Revenue for the
three
months ended in Mar. 2026 was 0.10.
Alsok Co (TSE:2331) 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.
Alsok Co's Inventory Turnover for the
three
months ended in Mar. 2026 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.
Alsok Co's Inventory to Revenue for the
three
months ended in Mar. 2026 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.
Alsok Co Days Inventory Related Terms
Alsok Co Days Inventory Historical Data
* Premium members only.
The historical data trend for Alsok Co'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:2331 vs ALLE, MSA, ADT: Days Inventory Comparison
For the Security & Protection Services subindustry, Alsok 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.
Alsok Co Days Inventory vs Business Services Industry
For the Business Services industry and Industrials sector, Alsok Co's Days Inventory distribution charts can be found below:
* The bar in red indicates where Alsok 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.
Alsok Co (TSE:2331) has a Days Inventory of 12.09 as of Mar. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Alsok Co and its competitors. This is 53% above median its historical median of 7.89. Over the past decade, Alsok Co's Days Inventory has ranged from 6.57 to 12.33. According to the industry distribution chart, Alsok Co ranks #241 out of 673 companies in the Business Services industry, placing it in the top 35.8%.
Is Alsok Co's Days Inventory too high?
Alsok Co's current Days Inventory of 12.09 is 53% above median its 10-year median of 7.89. Over the past 10 years, this metric has ranged from a low of 6.57 to a high of 12.33. The Business Services industry median Days Inventory is 25.28. Alsok Co's value of 12.09 is 52.2% below this industry median. Based on the distribution chart, Alsok Co ranks #241 out of 673 companies in the Business Services industry, which is above the industry midpoint. Overall, Alsok Co has a GF Score™ of 93/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Alsok Co's Days Inventory compare to ALLE and MSA?
According to the Business Services industry distribution chart, Alsok Co ranks #241 out of 673 companies for Days Inventory. This puts Alsok Co in the upper half of its industry. The industry median Days Inventory is 25.28. Alsok Co's value of 12.09 is 52.2% below this benchmark. Historically, Alsok Co's own Days Inventory has ranged from 6.57 to 12.33 over the past decade. While the company's 10-year median is 7.89 vs. the industry median of 25.28, Alsok 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 Business Services company?
The median Days Inventory among Business Services companies is 25.28, based on 673 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. Alsok Co's current Days Inventory of 12.09 is 52.2% 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 Alsok Co and its competitors. For the Business Services industry, the median Days Inventory is 25.28 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Alsok Co's current Days Inventory is 12.09, which is 53% above median its own 10-year median of 7.89. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Alsok Co stock overvalued right now?
Based on GuruFocus' analysis, Alsok Co (TSE:2331) is currently considered Fairly Valued. The stock's GF Value™ is 円1,174.10, compared to a current price of 円1,128.00 — trading 3.9% below its estimated fair value. The current Days Inventory is 12.09, which is 53% above median its 10-year median of 7.89 and 52.2% below the Business Services industry median of 25.28. Alsok Co's overall GF Score™ is 93/100 with 4 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 Alsok Co (TSE:2331), the current Days Inventory is 12.09 as of Mar. 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 Alsok Co (TSE:2331) Overvalued in 2026?
Based on GuruFocus' analysis, Alsok Co stock appears to be undervalued.
The current stock price of 円1,128.00 is trading 3.9% below its estimated GF Value™ of 円1,174.10.
GuruFocus considers Alsok Co to be Fairly Valued.
Key valuation signals for TSE:2331:
Days Inventory: 12.09 (53% above median its 10-year median of 7.89)
GF Value™: 円1,174.10 vs. price of 円1,128.00 (3.9% below fair value)
Industry Position: 52.2% below the Business Services median (#241 of 673)
No single metric tells the full story. See the TSE:2331 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Alsok Co Ltd is a Japanese security services provider. The services and products offered include home security systems, personal security for senior citizens, children and women, life support such as housework contracting, listening-device inspection and long-term care, online security systems for corporations, electronic security systems with monitoring capabilities, ATM management systems, damage insurance, and housing complexes security services.
93GF Score
Get the complete analysis for TSE:2331
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:2331 has been successfully added to your 
