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Summa Defence OyjOSTO:SUMMAS +0.15%53 Days Inventory is 34.81 as of Dec. 2025, which is 58% below its 10-year median of 83.70. GuruFocus rates OSTO:SUMMAS with a GF Score™ of 53/100 and a GF Value™ of kr13.57 (Possible Value Trap). The stock has 6 warning signs investors should review. Among 327 Aerospace & Defense companies, Summa Defence Oyj ranks better than 88.07% on this metric.
The historical rank and industry rank for Summa Defence Oyj's Days Inventory or its related term are showing as below:
OSTO:SUMMAS'
s Days Inventory Range Over the Past 10 Years
Min: 15.07 Med: 83.7 Max: 186.92
Current: 31.91
During the past 13 years, Summa Defence Oyj's highest Days Inventory was 186.92. The lowest was 15.07. And the median was 83.70.
OSTO:SUMMAS's Days Inventory is ranked better than 88.07% of 327
companies
in the Aerospace & Defense industry
Industry Median: 139.44
vs OSTO:SUMMAS: 31.91
Summa Defence Oyj's Days Inventory
increased
from Dec. 2024 (9.42) to Dec. 2025 (34.81).
It might indicate that Summa Defence Oyj's sales slowed down.
Inventory Turnover measures how fast the company turns over its inventory within a year.
Summa Defence Oyj's Inventory Turnover for the
six
months ended in Dec. 2025 was 5.24.
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.
Summa Defence Oyj's Inventory-to-Revenue for the
six
months ended in Dec. 2025 was 0.23.
Summa Defence Oyj (OSTO:SUMMAS) 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.
Summa Defence Oyj'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.
Summa Defence Oyj'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.
Summa Defence Oyj Days Inventory Related Terms
Summa Defence Oyj Days Inventory Historical Data
* Premium members only.
The historical data trend for Summa Defence Oyj'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.
OSTO:SUMMAS vs SPCX, GE, RTX: Days Inventory Comparison
For the Aerospace & Defense subindustry, Summa Defence Oyj'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.
Summa Defence Oyj Days Inventory vs Aerospace & Defense Industry
For the Aerospace & Defense industry and Industrials sector, Summa Defence Oyj's Days Inventory distribution charts can be found below:
* The bar in red indicates where Summa Defence Oyj'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.
Summa Defence Oyj (OSTO:SUMMAS) has a Days Inventory of 34.81 as of Dec. 2025. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Summa Defence Oyj and its competitors. This is 58% below median its historical median of 83.70. Over the past decade, Summa Defence Oyj's Days Inventory has ranged from 15.07 to 186.92. According to the industry distribution chart, Summa Defence Oyj ranks #39 out of 327 companies in the Aerospace & Defense industry, placing it in the top 11.9%.
Is Summa Defence Oyj's Days Inventory too high?
Summa Defence Oyj's current Days Inventory of 34.81 is 58% below median its 10-year median of 83.70. Over the past 10 years, this metric has ranged from a low of 15.07 to a high of 186.92. The Aerospace & Defense industry median Days Inventory is 139.44. Summa Defence Oyj's value of 34.81 is 75% below this industry median. Based on the distribution chart, Summa Defence Oyj ranks #39 out of 327 companies in the Aerospace & Defense industry, which is in the top quartile — a strong position relative to peers. Overall, Summa Defence Oyj has a GF Score™ of 53/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Summa Defence Oyj's Days Inventory compare to SPCX and GE?
According to the Aerospace & Defense industry distribution chart, Summa Defence Oyj ranks #39 out of 327 companies for Days Inventory. This places Summa Defence Oyj in the top 12% of its industry — outperforming the majority of peers. The industry median Days Inventory is 139.44. Summa Defence Oyj's value of 34.81 is 75% below this benchmark. Historically, Summa Defence Oyj's own Days Inventory has ranged from 15.07 to 186.92 over the past decade. While the company's 10-year median is 83.70 vs. the industry median of 139.44, Summa Defence Oyj 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 an Aerospace & Defense company?
The median Days Inventory among Aerospace & Defense companies is 139.44, based on 327 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. Summa Defence Oyj's current Days Inventory of 34.81 is 75% 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 Summa Defence Oyj and its competitors. For the Aerospace & Defense industry, the median Days Inventory is 139.44 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Summa Defence Oyj's current Days Inventory is 34.81, which is 58% below median its own 10-year median of 83.70. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Summa Defence Oyj stock overvalued right now?
Based on GuruFocus' analysis, Summa Defence Oyj (OSTO:SUMMAS) is currently considered Possible Value Trap. The stock's GF Value™ is kr13.57, compared to a current price of kr6.54 — trading 51.8% below its estimated fair value. The current Days Inventory is 34.81, which is 58% below median its 10-year median of 83.70 and 75% below the Aerospace & Defense industry median of 139.44. Summa Defence Oyj's overall GF Score™ is 53/100 with 6 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 Summa Defence Oyj (OSTO:SUMMAS), the current Days Inventory is 34.81 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 Summa Defence Oyj (OSTO:SUMMAS) Overvalued in 2026?
Based on GuruFocus' analysis, Summa Defence Oyj stock appears to be undervalued.
The current stock price of kr6.54 is trading 51.8% below its estimated GF Value™ of kr13.57.
GuruFocus considers Summa Defence Oyj to be Possible Value Trap.
Key valuation signals for OSTO:SUMMAS:
Days Inventory: 34.81 (58% below median its 10-year median of 83.70)
GF Value™: kr13.57 vs. price of kr6.54 (51.8% below fair value)
Industry Position: 75% below the Aerospace & Defense median (#39 of 327)
No single metric tells the full story. See the OSTO:SUMMAS stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Summa Defence Oyj is a Finnish defense and security technology group supporting industry growth and strengthening industrial production capacity amid geopolitical change. Summa Defence focuses on dual-use technologies related to security of supply, situational awareness, mobility, and defense, which benefit the civilian, security, and defense sectors while strengthening comprehensive security, security of supply, and crisis management capabilities. Its products includes Multipurpose vessels, Multipurpose machinery, Watermaster, containers and modular spaces, Drones, XR near-eye display solutions, Griselda - Intelligence data fusion platform, and Renewable energy.
53GF Score
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