908 DevicesMASS -2.23%70 Days Inventory is 184.14 as of Mar. 2026, which is 15% above its 10-year median of 159.77. GuruFocus rates MASS with a GF Score™ of 70/100 and a GF Value™ of $6.92 (Modestly Overvalued). The stock has 9 warning signs investors should review. Among 786 Medical Devices & Instruments companies, 908 Devices ranks worse than 50.89% on this metric.
Days Inventory is also known as Days Sales of Inventory (DSI). 908 Devices's Average Total Inventories for the
three
months ended in Mar. 2026 was $13.12 Mil. 908 Devices's Cost of Goods Sold for the
three
months ended in Mar. 2026 was $6.50 Mil.
Hence, 908 Devices's Days Inventory for the
three
months ended in Mar. 2026 was 184.14.
The historical rank and industry rank for 908 Devices's Days Inventory or its related term are showing as below:
MASS'
s Days Inventory Range Over the Past 10 Years
Min: 120.1 Med: 159.77 Max: 202.74
Current: 181.62
During the past 8 years, 908 Devices's highest Days Inventory was 202.74. The lowest was 120.10. And the median was 159.77.
MASS's Days Inventory is ranked worse than 50.89% of 786
companies
in the Medical Devices & Instruments industry
Industry Median: 179.86
vs MASS: 181.62
908 Devices's Days Inventory
increased
from Mar. 2025 (172.84) to Mar. 2026 (184.14).
It might indicate that 908 Devices's sales slowed down.
Inventory Turnover measures how fast the company turns over its inventory within a year.
908 Devices's Inventory Turnover for the
three
months ended in Mar. 2026 was 0.50.
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.
908 Devices's Inventory-to-Revenue for the
three
months ended in Mar. 2026 was 0.98.
908 Devices (NAS:MASS) 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.
908 Devices'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.
908 Devices'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.
908 Devices Days Inventory Related Terms
908 Devices Days Inventory Historical Data
* Premium members only.
The historical data trend for 908 Devices'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 Medical Devices subindustry, 908 Devices'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.
908 Devices Days Inventory vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, 908 Devices's Days Inventory distribution charts can be found below:
* The bar in red indicates where 908 Devices'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.
908 Devices (MASS) has a Days Inventory of 184.14 as of Mar. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on 908 Devices and its competitors. This is 15% above median its historical median of 159.77. Over the past decade, 908 Devices' Days Inventory has ranged from 120.10 to 202.74. According to the industry distribution chart, 908 Devices ranks #400 out of 786 companies in the Medical Devices & Instruments industry, placing it in the top 50.9%.
Is 908 Devices' Days Inventory too high?
908 Devices' current Days Inventory of 184.14 is 15% above median its 10-year median of 159.77. Over the past 10 years, this metric has ranged from a low of 120.10 to a high of 202.74. The Medical Devices & Instruments industry median Days Inventory is 179.86. 908 Devices' value of 184.14 is 2.4% above this industry median. Based on the distribution chart, 908 Devices ranks #400 out of 786 companies in the Medical Devices & Instruments industry, which is below the industry midpoint. Overall, 908 Devices has a GF Score™ of 70/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does 908 Devices' Days Inventory compare to ELMD and SI?
According to the Medical Devices & Instruments industry distribution chart, 908 Devices ranks #400 out of 786 companies for Days Inventory. This places 908 Devices in the lower half of its industry. The industry median Days Inventory is 179.86. 908 Devices' value of 184.14 is 2.4% above this benchmark. Historically, 908 Devices' own Days Inventory has ranged from 120.10 to 202.74 over the past decade. While the company's 10-year median is 159.77 vs. the industry median of 179.86, 908 Devices 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 179.86, 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. 908 Devices's current Days Inventory of 184.14 is 2.4% 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 908 Devices and its competitors. For the Medical Devices & Instruments industry, the median Days Inventory is 179.86 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. 908 Devices's current Days Inventory is 184.14, which is 15% above median its own 10-year median of 159.77. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is 908 Devices stock overvalued right now?
Based on GuruFocus' analysis, 908 Devices (MASS) is currently considered Modestly Overvalued. The stock's GF Value™ is $6.92, compared to a current price of $8.78 — trading 26.9% above its estimated fair value. The current Days Inventory is 184.14, which is 15% above median its 10-year median of 159.77 and 2.4% above the Medical Devices & Instruments industry median of 179.86. 908 Devices' overall GF Score™ is 70/100 with 9 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 908 Devices (MASS), the current Days Inventory is 184.14 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 908 Devices (MASS) Overvalued in 2026?
Based on GuruFocus' analysis, 908 Devices stock appears to be overvalued.
The current stock price of $8.78 is trading 26.9% above its estimated GF Value™ of $6.92.
GuruFocus considers 908 Devices to be Modestly Overvalued.
Key valuation signals for MASS:
Days Inventory: 184.14 (15% above median its 10-year median of 159.77)
GF Value™: $6.92 vs. price of $8.78 (26.9% above fair value)
Industry Position: 2.4% above the Medical Devices & Instruments median (#400 of 786)
No single metric tells the full story. See the MASS stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
908 Devices Inc develops a suite of purpose-built handheld devices for point-of-need chemical analysis. Leveraging mass spectrometry, optical spectroscopy, analytics and machine learning technologies, the company makes devices that are smaller and more accessible than conventional laboratory instruments. Its devices, including MX908, ThreatID, XplorIR and VipIR, are used to analyze unknown materials and provide actionable answers in health, safety and defense technology applications, addressing the fentanyl and illicit drug crisis, toxic carcinogen exposure and security threats. The company reimagines mass spectrometry technology by developing smaller, lower-cost and simpler-to-operate devices compared to conventional instruments, and generates maximum revenue from the United States.
70GF Score
Get the complete analysis for MASS
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
MASS has been successfully added to your 
