Inspire Medical SystemsSTU:2DR -0.49%56 Days Inventory is 510.62 as of Mar. 2026, which is 253% above its 10-year median of 144.61. GuruFocus rates STU:2DR with a GF Score™ of 56/100 and a GF Value™ of €188.24 (Possible Value Trap). The stock has 7 warning signs investors should review. Among 786 Medical Devices & Instruments companies, Inspire Medical Systems ranks worse than 84.61% on this metric.
The historical rank and industry rank for Inspire Medical Systems's Days Inventory or its related term are showing as below:
STU:2DR'
s Days Inventory Range Over the Past 10 Years
Min: 80.37 Med: 144.61 Max: 378.31
Current: 378.31
During the past 11 years, Inspire Medical Systems's highest Days Inventory was 378.31. The lowest was 80.37. And the median was 144.61.
STU:2DR's Days Inventory is ranked worse than 84.61% of 786
companies
in the Medical Devices & Instruments industry
Industry Median: 179.6
vs STU:2DR: 378.31
If a company builds up inventory, it may mean it is having difficulties selling its goods.
Inventory Turnover measures how fast the company turns over its inventory within a year.
Inspire Medical Systems's Inventory Turnover for the
three
months ended in Mar. 2026 was 0.18.
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.
Inspire Medical Systems's Inventory-to-Revenue for the
three
months ended in Mar. 2026 was 0.76.
Inspire Medical Systems (STU:2DR) 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.
Inspire Medical Systems'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.
Inspire Medical Systems'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.
Inspire Medical Systems Days Inventory Related Terms
Inspire Medical Systems Days Inventory Historical Data
* 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.
STU:2DR vs ENOV, PRCT, AHCO: Days Inventory Comparison
For the Medical Devices subindustry, Inspire Medical Systems'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.
Inspire Medical Systems Days Inventory vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, Inspire Medical Systems's Days Inventory distribution charts can be found below:
* The bar in red indicates where Inspire Medical Systems'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.
Inspire Medical Systems (STU:2DR) has a Days Inventory of 510.62 as of Mar. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Inspire Medical Systems and its competitors. This is 253% above median its historical median of 144.61. Over the past decade, Inspire Medical Systems' Days Inventory has ranged from 80.37 to 378.31. According to the industry distribution chart, Inspire Medical Systems ranks #665 out of 786 companies in the Medical Devices & Instruments industry, placing it in the top 84.6%.
Is Inspire Medical Systems' Days Inventory too high?
Inspire Medical Systems' current Days Inventory of 510.62 is 253% above median its 10-year median of 144.61. Over the past 10 years, this metric has ranged from a low of 80.37 to a high of 378.31. The Medical Devices & Instruments industry median Days Inventory is 179.60. Inspire Medical Systems' value of 510.62 is 184.3% above this industry median. Based on the distribution chart, Inspire Medical Systems ranks #665 out of 786 companies in the Medical Devices & Instruments industry, which is in the bottom quartile relative to peers. Overall, Inspire Medical Systems has a GF Score™ of 56/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Inspire Medical Systems' Days Inventory compare to ENOV and PRCT?
According to the Medical Devices & Instruments industry distribution chart, Inspire Medical Systems ranks #665 out of 786 companies for Days Inventory. This places Inspire Medical Systems in the lower half of its industry. The industry median Days Inventory is 179.60. Inspire Medical Systems' value of 510.62 is 184.3% above this benchmark. Historically, Inspire Medical Systems' own Days Inventory has ranged from 80.37 to 378.31 over the past decade. While the company's 10-year median is 144.61 vs. the industry median of 179.60, Inspire Medical Systems 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 Medical Devices & Instruments company?
The median Days Inventory among Medical Devices & Instruments companies is 179.60, based on 786 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. Inspire Medical Systems's current Days Inventory of 510.62 is 184.3% 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 Inspire Medical Systems and its competitors. For the Medical Devices & Instruments industry, the median Days Inventory is 179.60 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Inspire Medical Systems's current Days Inventory is 510.62, which is 253% above median its own 10-year median of 144.61. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Inspire Medical Systems stock overvalued right now?
Based on GuruFocus' analysis, Inspire Medical Systems (STU:2DR) is currently considered Possible Value Trap. The stock's GF Value™ is €188.24, compared to a current price of €40.80 — trading 78.3% below its estimated fair value. The current Days Inventory is 510.62, which is 253% above median its 10-year median of 144.61 and 184.3% above the Medical Devices & Instruments industry median of 179.60. Inspire Medical Systems' overall GF Score™ is 56/100 with 7 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 Inspire Medical Systems (STU:2DR), the current Days Inventory is 510.62 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 Inspire Medical Systems (STU:2DR) Overvalued in 2026?
Based on GuruFocus' analysis, Inspire Medical Systems stock appears to be undervalued.
The current stock price of €40.80 is trading 78.3% below its estimated GF Value™ of €188.24.
GuruFocus considers Inspire Medical Systems to be Possible Value Trap.
Key valuation signals for STU:2DR:
Days Inventory: 510.62 (253% above median its 10-year median of 144.61)
GF Value™: €188.24 vs. price of €40.80 (78.3% below fair value)
Industry Position: 184.3% above the Medical Devices & Instruments median (#665 of 786)
No single metric tells the full story. See the STU:2DR stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Inspire Medical Systems Inc operates as a medical technology company. It focuses on the development and commercialization of minimally invasive solutions for patients with obstructive sleep apnea (OSA). It offers Inspire system, a neurostimulation technology that provides a safe and effective treatment for moderate to severe obstructive sleep apnea. The firm has operating footprints in the United States and All other countries wherein, it generates a majority of its revenue from the United States. Its segment revenues are derived from the sales of its product, the Inspire system, to hospitals and ambulatory surgery centers in the U.S. and in selected countries in Europe and the Asia Pacific region.
56GF Score
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