Tempest Security AB (OSTO:TSEC) Days Inventory: 5.11 (As of Dec. 2025) — 10% Below Median

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Charlie Tian
Founder & CEO of GuruFocus
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OSTO:TSEC Tempest Security AB OSTO:TSEC
70 GF Score
Price kr11.20
GF Value kr18.05
Valuation Possible Value Trap
! 4 Warning Signs
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What is Tempest Security AB Days Inventory?

Tempest Security AB OSTO:TSEC +2.75% 70 Days Inventory is 5.11 as of Dec. 2025, which is 10% below its 10-year median of 5.68. GuruFocus rates OSTO:TSEC with a GF Score™ of 70/100 and a GF Value™ of kr18.05 (Possible Value Trap). The stock has 4 warning signs investors should review. Among 673 Business Services companies, Tempest Security AB ranks better than 73.55% on this metric.

Days Inventory is also known as Days Sales of Inventory (DSI). Tempest Security AB's Average Total Inventories for the three months ended in Dec. 2025 was kr0.6 Mil. Tempest Security AB's Cost of Goods Sold for the three months ended in Dec. 2025 was kr10.7 Mil. Hence, Tempest Security AB's Days Inventory for the three months ended in Dec. 2025 was 5.11.

The historical rank and industry rank for Tempest Security AB's Days Inventory or its related term are showing as below:

OSTO:TSEC' s Days Inventory Range Over the Past 10 Years
Min: 1.36   Med: 5.68   Max: 28.54
Current: 6.8

During the past 11 years, Tempest Security AB's highest Days Inventory was 28.54. The lowest was 1.36. And the median was 5.68.

OSTO:TSEC's Days Inventory is ranked better than
73.55% of 673 companies
in the Business Services industry
Industry Median: 25.28 vs OSTO:TSEC: 6.80

Tempest Security AB's Days Inventory declined from Dec. 2024 (9.26) to Dec. 2025 (5.11).

Inventory Turnover measures how fast the company turns over its inventory within a year. Tempest Security AB's Inventory Turnover for the three months ended in Dec. 2025 was 17.86.

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. Tempest Security AB's Inventory-to-Revenue for the three months ended in Dec. 2025 was 0.00.


Tempest Security AB  (OSTO:TSEC) 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.

Tempest Security AB'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.

Tempest Security AB'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.


Tempest Security AB Days Inventory Related Terms


Tempest Security AB Days Inventory Historical Data

* Premium members only.

The historical data trend for Tempest Security AB'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.

Tempest Security AB Days Inventory Chart

Tempest Security AB Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Days Inventory
Get a 7-Day Free Trial Premium Member Only Premium Member Only 3.55 1.61 1.36 4.61 6.74

Tempest Security AB Quarterly Data
Mar21 Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25
Days Inventory Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 9.26 9.30 6.20 7.16 5.11

OSTO:TSEC vs ALLE, MSA, ADT: Days Inventory Comparison

For the Security & Protection Services subindustry, Tempest Security AB'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.


Tempest Security AB Days Inventory vs Business Services Industry

For the Business Services industry and Industrials sector, Tempest Security AB's Days Inventory distribution charts can be found below:

* The bar in red indicates where Tempest Security AB's Days Inventory falls into.


OSTO:TSEC
70GF Score
Tempest Security AB OSTO:TSEC
Days Inventory is just one metric. See GF Score™, valuation, warning signs, and more.
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Tempest Security AB Days Inventory Calculation

Days Inventory indicates the number of days of goods in sales that a company has in the inventory.

Tempest Security AB's Days Inventory for the fiscal year that ended in Dec. 2025 is calculated as

Days Inventory (A: Dec. 2025 )
=Average Total Inventories / Cost of Goods Sold*Days in Period
=( (Total Inventories (A: Dec. 2024 ) + Total Inventories (A: Dec. 2025 )) / count ) / Cost of Goods Sold (A: Dec. 2025 )*Days in Period
=( (0.987 + 0.531) / 2 ) / 41.095*365
=0.759 / 41.095*365
=6.74

Tempest Security AB's Days Inventory for the quarter that ended in Dec. 2025 is calculated as:

Days Inventory (Q: Dec. 2025 )
=Average Total Inventories / Cost of Goods Sold*Days in Period
=( (Total Inventories (Q: Sep. 2025 ) + Total Inventories (Q: Dec. 2025 )) / count ) / Cost of Goods Sold (Q: Dec. 2025 )*Days in Period
=( (0.668 + 0.531) / 2 ) / 10.707*365 / 4
=0.5995 / 10.707*365 / 4
=5.11

* 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.

Frequently Asked Questions Learn more about Days Inventory →
What does a Days Inventory of 5.11 mean?
Tempest Security AB (OSTO:TSEC) has a Days Inventory of 5.11 as of Dec. 2025. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Tempest Security AB and its competitors. This is 10% below median its historical median of 5.68. Over the past decade, Tempest Security AB's Days Inventory has ranged from 1.36 to 28.54. According to the industry distribution chart, Tempest Security AB ranks #178 out of 673 companies in the Business Services industry, placing it in the top 26.4%.
Is Tempest Security AB's Days Inventory too high?
Tempest Security AB's current Days Inventory of 5.11 is 10% below median its 10-year median of 5.68. Over the past 10 years, this metric has ranged from a low of 1.36 to a high of 28.54. The Business Services industry median Days Inventory is 25.28. Tempest Security AB's value of 5.11 is 79.8% below this industry median. Based on the distribution chart, Tempest Security AB ranks #178 out of 673 companies in the Business Services industry, which is above the industry midpoint. Overall, Tempest Security AB has a GF Score™ of 70/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Tempest Security AB's Days Inventory compare to ALLE and MSA?
According to the Business Services industry distribution chart, Tempest Security AB ranks #178 out of 673 companies for Days Inventory. This puts Tempest Security AB in the upper half of its industry. The industry median Days Inventory is 25.28. Tempest Security AB's value of 5.11 is 79.8% below this benchmark. Historically, Tempest Security AB's own Days Inventory has ranged from 1.36 to 28.54 over the past decade. While the company's 10-year median is 5.68 vs. the industry median of 25.28, Tempest Security AB 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. Tempest Security AB's current Days Inventory of 5.11 is 79.8% 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 Tempest Security AB 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. Tempest Security AB's current Days Inventory is 5.11, which is 10% below median its own 10-year median of 5.68. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Tempest Security AB stock overvalued right now?
Based on GuruFocus' analysis, Tempest Security AB (OSTO:TSEC) is currently considered Possible Value Trap. The stock's GF Value™ is kr18.05, compared to a current price of kr11.20 — trading 38% below its estimated fair value. The current Days Inventory is 5.11, which is 10% below median its 10-year median of 5.68 and 79.8% below the Business Services industry median of 25.28. Tempest Security AB's overall GF Score™ is 70/100 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 Tempest Security AB (OSTO:TSEC), the current Days Inventory is 5.11 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 Tempest Security AB (OSTO:TSEC) Overvalued in 2026?

Based on GuruFocus' analysis, Tempest Security AB stock appears to be undervalued. The current stock price of kr11.20 is trading 38% below its estimated GF Value™ of kr18.05. GuruFocus considers Tempest Security AB to be Possible Value Trap.

Key valuation signals for OSTO:TSEC:

  • Days Inventory: 5.11 (10% below median its 10-year median of 5.68)
  • GF Value™: kr18.05 vs. price of kr11.20 (38% below fair value)
  • GF Score™: 70/100 with 4 warning signs
  • Industry Position: 79.8% below the Business Services median (#178 of 673)

No single metric tells the full story. See the OSTO:TSEC stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Tempest Security AB Business Description

Address Ralambsvagen 17, 18th Floor, Stockholm, SWE, 112 59
Tempest Security AB provides solutions for security, protection, and service. The company has two segments: Security Solutions and Risk Solutions. The company gains the majority of revenue from Security Solutions, where it provides security guards, orderlies, and shop control. Risk Solutions includes Consulting, training, personal protection, and other specialized services. Geographically, the business activities function through the regions of Sweden, Denmark, and the United Kingdom.
70GF Score

Get the complete analysis for OSTO:TSEC

Days Inventory is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

kr11.20
Price
kr18.05
GF Value