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.
AtenorFRA:Z5S -1.97%38 Days Inventory is 1,151.35 as of Dec. 2025, which is 52% below its 10-year median of 2,415.69. GuruFocus rates FRA:Z5S with a GF Score™ of 38/100 and a GF Value™ of €1.84 (Modestly Undervalued). The stock has 3 warning signs investors should review. Among 1,318 Real Estate companies, Atenor ranks worse than 73.98% on this metric.
Days Inventory is also known as Days Sales of Inventory (DSI). Atenor's Average Total Inventories for the
six
months ended in Dec. 2025 was €662.4 Mil. Atenor's Cost of Goods Sold for the
six
months ended in Dec. 2025 was €105.0 Mil.
Hence, Atenor's Days Inventory for the
six
months ended in Dec. 2025 was 1,151.35.
The historical rank and industry rank for Atenor's Days Inventory or its related term are showing as below:
FRA:Z5S'
s Days Inventory Range Over the Past 10 Years
Min: 925.41 Med: 2415.69 Max: 10045.61
Current: 1638.08
During the past 13 years, Atenor's highest Days Inventory was 10045.61. The lowest was 925.41. And the median was 2415.69.
FRA:Z5S's Days Inventory is ranked worse than 73.98% of 1318
companies
in the Real Estate industry
Industry Median: 691.085
vs FRA:Z5S: 1638.08
Atenor's Days Inventory
increased
from Dec. 2024 (920.27) to Dec. 2025 (1,151.35).
It might indicate that Atenor's sales slowed down.
Inventory Turnover measures how fast the company turns over its inventory within a year.
Atenor's Inventory Turnover for the
six
months ended in Dec. 2025 was 0.16.
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.
Atenor's Inventory-to-Revenue for the
six
months ended in Dec. 2025 was 6.80.
Atenor (FRA:Z5S) 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.
Atenor'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.
Atenor'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.
Atenor Days Inventory Related Terms
Atenor Days Inventory Historical Data
* Premium members only.
The historical data trend for Atenor'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.
For the Real Estate - Development subindustry, Atenor'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.
Atenor Days Inventory vs Real Estate Industry
For the Real Estate industry and Real Estate sector, Atenor's Days Inventory distribution charts can be found below:
* The bar in red indicates where Atenor'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.
Atenor (FRA:Z5S) has a Days Inventory of 1,151.35 as of Dec. 2025. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Atenor and its competitors. This is 52% below median its historical median of 2,415.69. Over the past decade, Atenor's Days Inventory has ranged from 925.41 to 10,045.61. According to the industry distribution chart, Atenor ranks #975 out of 1318 companies in the Real Estate industry, placing it in the top 74%.
Is Atenor's Days Inventory too high?
Atenor's current Days Inventory of 1,151.35 is 52% below median its 10-year median of 2,415.69. Over the past 10 years, this metric has ranged from a low of 925.41 to a high of 10,045.61. The Real Estate industry median Days Inventory is 691.09. Atenor's value of 1,151.35 is 66.6% above this industry median. Based on the distribution chart, Atenor ranks #975 out of 1318 companies in the Real Estate industry, which is below the industry midpoint. Overall, Atenor has a GF Score™ of 38/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Atenor's Days Inventory compare to competitors?
According to the Real Estate industry distribution chart, Atenor ranks #975 out of 1318 companies for Days Inventory. This places Atenor in the lower half of its industry. The industry median Days Inventory is 691.09. Atenor's value of 1,151.35 is 66.6% above this benchmark. Historically, Atenor's own Days Inventory has ranged from 925.41 to 10,045.61 over the past decade. While the company's 10-year median is 2,415.69 vs. the industry median of 691.09, Atenor has consistently been above 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 Real Estate company?
The median Days Inventory among Real Estate companies is 691.09, based on 1,318 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. Atenor's current Days Inventory of 1,151.35 is 66.6% above 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 Atenor and its competitors. For the Real Estate industry, the median Days Inventory is 691.09 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Atenor's current Days Inventory is 1,151.35, which is 52% below median its own 10-year median of 2,415.69. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Atenor stock overvalued right now?
Based on GuruFocus' analysis, Atenor (FRA:Z5S) is currently considered Modestly Undervalued. The stock's GF Value™ is €1.84, compared to a current price of €1.50 — trading 18.8% below its estimated fair value. The current Days Inventory is 1,151.35, which is 52% below median its 10-year median of 2,415.69 and 66.6% above the Real Estate industry median of 691.09. Atenor's overall GF Score™ is 38/100 with 3 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 Atenor (FRA:Z5S), the current Days Inventory is 1,151.35 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 Atenor (FRA:Z5S) Overvalued in 2026?
Based on GuruFocus' analysis, Atenor stock appears to be undervalued.
The current stock price of €1.50 is trading 18.8% below its estimated GF Value™ of €1.84.
GuruFocus considers Atenor to be Modestly Undervalued.
Key valuation signals for FRA:Z5S:
Days Inventory: 1,151.35 (52% below median its 10-year median of 2,415.69)
GF Value™: €1.84 vs. price of €1.50 (18.8% below fair value)
Industry Position: 66.6% above the Real Estate median (#975 of 1318)
No single metric tells the full story. See the FRA:Z5S stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Atenor SA is a Belgium-based real estate development company engaged in the business activity of developing real estate projects. Its project portfolio comprises offices, mixed-use, and residential complexes. The company's projects include Up-Site, Hermes Business Campus, Vaci Greens, Victor, Trebel, and South City Hotel. The group operates in Belgium, the Grand Duchy of Luxembourg, Hungary, and Romania.
38GF Score
Get the complete analysis for FRA:Z5S
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
FRA:Z5S has been successfully added to your 
