MTU Aero Engines AGMTUAF +2.34%86 Days Inventory is 90.40 as of Dec. 2025, which is 12% below its 10-year median of 102.61. GuruFocus rates MTUAF with a GF Score™ of 86/100 and a GF Value™ of $454.52 (Fairly Valued). The stock has 3 warning signs investors should review. Among 326 Aerospace & Defense companies, MTU Aero Engines AG ranks better than 67.79% on this metric.
The historical rank and industry rank for MTU Aero Engines AG's Days Inventory or its related term are showing as below:
MTUAF'
s Days Inventory Range Over the Past 10 Years
Min: 80.7 Med: 102.61 Max: 132.49
Current: 93.33
During the past 13 years, MTU Aero Engines AG's highest Days Inventory was 132.49. The lowest was 80.70. And the median was 102.61.
MTUAF's Days Inventory is ranked better than 67.79% of 326
companies
in the Aerospace & Defense industry
Industry Median: 141.34
vs MTUAF: 93.33
MTU Aero Engines AG's Days Inventory
declined
from Dec. 2024 (93.16) to Dec. 2025 (90.40).
Inventory Turnover measures how fast the company turns over its inventory within a year.
MTU Aero Engines AG's Inventory Turnover for the
six
months ended in Dec. 2025 was 2.02.
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.
MTU Aero Engines AG's Inventory-to-Revenue for the
six
months ended in Dec. 2025 was 0.40.
MTU Aero Engines AG (OTCPK:MTUAF) 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.
MTU Aero Engines AG'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.
MTU Aero Engines AG'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.
MTU Aero Engines AG Days Inventory Related Terms
MTU Aero Engines AG Days Inventory Historical Data
* Premium members only.
The historical data trend for MTU Aero Engines AG'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 Aerospace & Defense subindustry, MTU Aero Engines AG'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.
MTU Aero Engines AG Days Inventory vs Aerospace & Defense Industry
For the Aerospace & Defense industry and Industrials sector, MTU Aero Engines AG's Days Inventory distribution charts can be found below:
* The bar in red indicates where MTU Aero Engines AG'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.
MTU Aero Engines AG (MTUAF) has a Days Inventory of 90.40 as of Dec. 2025. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on MTU Aero Engines AG and its competitors. This is 12% below median its historical median of 102.61. Over the past decade, MTU Aero Engines AG's Days Inventory has ranged from 80.70 to 132.49. According to the industry distribution chart, MTU Aero Engines AG ranks #105 out of 326 companies in the Aerospace & Defense industry, placing it in the top 32.2%.
Is MTU Aero Engines AG's Days Inventory too high?
MTU Aero Engines AG's current Days Inventory of 90.40 is 12% below median its 10-year median of 102.61. Over the past 10 years, this metric has ranged from a low of 80.70 to a high of 132.49. The Aerospace & Defense industry median Days Inventory is 141.34. MTU Aero Engines AG's value of 90.40 is 36% below this industry median. Based on the distribution chart, MTU Aero Engines AG ranks #105 out of 326 companies in the Aerospace & Defense industry, which is above the industry midpoint. Overall, MTU Aero Engines AG has a GF Score™ of 86/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does MTU Aero Engines AG's Days Inventory compare to SPCX and GE?
According to the Aerospace & Defense industry distribution chart, MTU Aero Engines AG ranks #105 out of 326 companies for Days Inventory. This puts MTU Aero Engines AG in the upper half of its industry. The industry median Days Inventory is 141.34. MTU Aero Engines AG's value of 90.40 is 36% below this benchmark. Historically, MTU Aero Engines AG's own Days Inventory has ranged from 80.70 to 132.49 over the past decade. While the company's 10-year median is 102.61 vs. the industry median of 141.34, MTU Aero Engines AG 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 141.34, based on 326 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. MTU Aero Engines AG's current Days Inventory of 90.40 is 36% 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 MTU Aero Engines AG and its competitors. For the Aerospace & Defense industry, the median Days Inventory is 141.34 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. MTU Aero Engines AG's current Days Inventory is 90.40, which is 12% below median its own 10-year median of 102.61. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is MTU Aero Engines AG stock overvalued right now?
Based on GuruFocus' analysis, MTU Aero Engines AG (MTUAF) is currently considered Fairly Valued. The stock's GF Value™ is $454.52, compared to a current price of $423.54 — trading 6.8% below its estimated fair value. The current Days Inventory is 90.40, which is 12% below median its 10-year median of 102.61 and 36% below the Aerospace & Defense industry median of 141.34. MTU Aero Engines AG's overall GF Score™ is 86/100 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 MTU Aero Engines AG (MTUAF), the current Days Inventory is 90.40 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 MTU Aero Engines AG (MTUAF) Overvalued in 2026?
Based on GuruFocus' analysis, MTU Aero Engines AG stock appears to be undervalued.
The current stock price of $423.54 is trading 6.8% below its estimated GF Value™ of $454.52.
GuruFocus considers MTU Aero Engines AG to be Fairly Valued.
Key valuation signals for MTUAF:
Days Inventory: 90.40 (12% below median its 10-year median of 102.61)
GF Value™: $454.52 vs. price of $423.54 (6.8% below fair value)
Industry Position: 36% below the Aerospace & Defense median (#105 of 326)
No single metric tells the full story. See the MTUAF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
MTU Aero Engines specializes in the development and production of commercial and military aircraft engine components and spare parts. It also performs maintenance, repair, and overhaul services for aircraft engines. More than 30% of commercial aircraft have MTU technology on board. The company is a major assembler of aircraft engines. The commercial and military engine segment develops and manufactures engine components for new engine production and spare parts for the aftermarket. The commercial maintenance business reports MTU's MRO services.
86GF Score
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