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Proto Labs's change in inventory for the quarter that ended in Mar. 2026 was €-0.5 Mil. It means Proto Labs's inventory
increased by €0.5 Mil
from Dec. 2025 to Mar. 2026 .
Proto Labs's change in inventory for the fiscal year that ended in Dec. 2025 was €-1.8 Mil. It means Proto Labs's inventory
increased by €1.8 Mil
from Dec. 2024 to Dec. 2025 .
Days Inventory indicates the number of days of goods in sales that a company has in the inventory.
Proto Labs's Days Inventory for the quarter that ended in Mar. 2026 was 17.52.
Inventory Turnover measures how fast the company turns over its inventory within a year.
Proto Labs's Inventory Turnover for the quarter that ended in Mar. 2026 was 5.21.
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.
Proto Labs's Inventory-to-Revenue for the quarter that ended in Mar. 2026 was 0.10.
Proto Labs (WBO:PRLB) Change In Inventory Explanation
1. Days Inventory indicates the number of days of goods in sales that a company has in the inventory.
Proto Labs's Days Inventory for the quarter that ended in is calculated as:
3. 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.
Proto Labs's Inventory to Revenue for the quarter that 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.
Proto Labs Change In Inventory Related Terms
Proto Labs Change In Inventory Historical Data
* Premium members only.
The historical data trend for Proto Labs's Change In 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.
Change In Inventory is the difference between last period's ending inventory and the current period's ending inventory.
Change In Inventory for the trailing twelve months (TTM) ended in Mar. 2026 adds up the quarterly data reported by the company within the most recent 12 months, which was €-1.7 Mil.
* 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.
What does a Change In Inventory of €-1.7 Mil mean?
Proto Labs (WBO:PRLB) has a Change In Inventory of €-1.7 Mil as of Mar. 2026. Change in Inventory is the difference between current-period inventory and past-period inventory. View historical data for Proto Labs and its competitors.
Is Proto Labs' Change In Inventory too high?
Proto Labs' current Change In Inventory is €-1.7 Mil. Overall, Proto Labs has a GF Score™ of 66/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Proto Labs' Change In Inventory compare to RYZ and WOR?
Proto Labs' Change In Inventory of €-1.7 Mil can be compared against companies in the Industrial Products industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Change In Inventory for an Industrial Products company?
A good Change In Inventory depends on the Industrial Products industry context. However, Change In Inventory should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Change In Inventory mean?
A high Change In Inventory can signal that a stock is expensive relative to its fundamentals. Change in Inventory is the difference between current-period inventory and past-period inventory. View historical data for Proto Labs and its competitors. Proto Labs's current Change In Inventory is €-1.7 Mil. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Proto Labs stock overvalued right now?
Based on GuruFocus' analysis, Proto Labs (WBO:PRLB) is currently considered Significantly Overvalued. The stock's GF Value™ is €38.14, compared to a current price of €66.30 — trading 73.8% above its estimated fair value. The current Change In Inventory is €-1.7 Mil. Proto Labs' overall GF Score™ is 66/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Change In Inventory calculated?
Change In Inventory is calculated from a company's financial statements. For Proto Labs (WBO:PRLB), the current Change In Inventory is €-1.7 Mil 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 Proto Labs (WBO:PRLB) Overvalued in 2026?
Based on GuruFocus' analysis, Proto Labs stock appears to be overvalued.
The current stock price of €66.30 is trading 73.8% above its estimated GF Value™ of €38.14.
GuruFocus considers Proto Labs to be Significantly Overvalued.
Key valuation signals for WBO:PRLB:
Change In Inventory: €-1.7 Mil
GF Value™: €38.14 vs. price of €66.30 (73.8% above fair value)
No single metric tells the full story. See the WBO:PRLB stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Proto Labs Inc is an on-demand manufacturer of custom parts for prototyping and short-run production. The company offers developers and engineers quick-turn production services to reduce the time to market. The Lab uses injection molding, computer numerical control machining, and 3-D printing, and sheet metal to manufacture custom parts for its clients. The company services clients' needs for prototype solutions, parts for testing procedures, bridge production capabilities during disruptions in manufacturing processes, limited-quantity requests, and end-of-life production support. Geographically, a majority of the company's revenue is derived from the United States and the rest from Europe.
66GF Score
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Change In Inventory is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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