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.
Proto LabsWBO:PRLB -4.30%66 EV-to-OCF is 21.74 as of Jul. 30, 2026, which is 9% above its 10-year median of 19.88. GuruFocus rates WBO:PRLB with a GF Score™ of 66/100 and a GF Value™ of €39.51 (Significantly Overvalued). The stock has 4 warning signs investors should review. Among 3,076 Industrial Products companies, Proto Labs ranks worse than 66.87% on this metric.
EV-to-OCF is calculated as enterprise value divided by its cash flow from operations. As of today, Proto Labs's Enterprise Value is €1,373.7 Mil.
Proto Labs's Cash Flow from Operations for the trailing twelve months (TTM) ended in Mar. 2026 was €63.2 Mil. Therefore, Proto Labs's EV-to-OCF for today is 21.74.
The historical rank and industry rank for Proto Labs's EV-to-OCF or its related term are showing as below:
WBO:PRLB'
s EV-to-OCF Range Over the Past 10 Years
Min: 7.35 Med: 19.88 Max: 53.27
Current: 21.23
During the past 13 years, the highest EV-to-OCF of Proto Labs was 53.27. The lowest was 7.35. And the median was 19.88.
WBO:PRLB's EV-to-OCF is ranked worse than 66.87% of 3076
companies
in the Industrial Products industry
Industry Median: 11.46
vs WBO:PRLB: 21.23
EV-to-OCF is a valuation multiple that allows analysts and investors to compare stocks, preferably in the same sector or industry. This important multiple is often used in conjunction with, or as an alternative to, the PE Ratio (TTM) to determine the fair market value of a company.
EV-to-OCF is a valuation multiple that allows analysts and investors to compare stocks, preferably in the same sector or industry. This important multiple is often used in conjunction with, or as an alternative to, the PE Ratio (TTM) to determine the fair market value of a company.
Proto Labs's share price for today is €63.50.
Proto Labs's Earnings per Share (Diluted) 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 €0.910.
* 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.
Enterprise Value is used because it is a more complete measure in reflecting how much an investor pays when buying a company. Cash Flow from Operations is an important financial metric because it represents the cash generated from operating activities at a company's disposal. Companies with a low EV-to-OCF ratio, combined with a strong balance sheet are generally considered as undervalued.
Proto Labs EV-to-OCF Related Terms
Proto Labs EV-to-OCF Historical Data
* Premium members only.
The historical data trend for Proto Labs's EV-to-OCF 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 Metal Fabrication subindustry, Proto Labs's EV-to-OCF, along with its competitors' market caps and EV-to-OCF 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.
Proto Labs EV-to-OCF vs Industrial Products Industry
For the Industrial Products industry and Industrials sector, Proto Labs's EV-to-OCF distribution charts can be found below:
* The bar in red indicates where Proto Labs's EV-to-OCF falls into.
Proto Labs's current Enterprise Value is €1,373.7 Mil.
Proto Labs's Cash Flow from Operations 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 €63.2 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.
Proto Labs (WBO:PRLB) has a EV-to-OCF of 21.74 as of Jul. 30, 2026. This is near median its historical median of 19.88. Over the past decade, Proto Labs' EV-to-OCF has ranged from 7.35 to 53.27. According to the industry distribution chart, Proto Labs ranks #2057 out of 3076 companies in the Industrial Products industry, placing it in the top 66.9%.
Is Proto Labs' EV-to-OCF too high?
Proto Labs' current EV-to-OCF of 21.74 is near median its 10-year median of 19.88. Over the past 10 years, this metric has ranged from a low of 7.35 to a high of 53.27. The Industrial Products industry median EV-to-OCF is 11.46. Proto Labs' value of 21.74 is 89.7% above this industry median. Based on the distribution chart, Proto Labs ranks #2057 out of 3076 companies in the Industrial Products industry, which is below the industry midpoint. 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' EV-to-OCF compare to RYZ and WOR?
According to the Industrial Products industry distribution chart, Proto Labs ranks #2057 out of 3076 companies for EV-to-OCF. This places Proto Labs in the lower half of its industry. The industry median EV-to-OCF is 11.46. Proto Labs' value of 21.74 is 89.7% above this benchmark. Historically, Proto Labs' own EV-to-OCF has ranged from 7.35 to 53.27 over the past decade. While the company's 10-year median is 19.88 vs. the industry median of 11.46, Proto Labs 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 EV-to-OCF for an Industrial Products company?
The median EV-to-OCF among Industrial Products companies is 11.46, based on 3,076 companies in the industry. Companies in the top quartile (top 25%) have a EV-to-OCF significantly above this median, while those in the bottom quartile fall well below. However, EV-to-OCF should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Proto Labs's current EV-to-OCF of 21.74 is 89.7% 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 EV-to-OCF mean?
A high EV-to-OCF can signal that a stock is expensive relative to its fundamentals. For the Industrial Products industry, the median EV-to-OCF is 11.46 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Proto Labs's current EV-to-OCF is 21.74, which is near median its own 10-year median of 19.88. 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 €39.51, compared to a current price of €63.50 — trading 60.7% above its estimated fair value. The current EV-to-OCF is 21.74, which is near median its 10-year median of 19.88 and 89.7% above the Industrial Products industry median of 11.46. Proto Labs' overall GF Score™ is 66/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is EV-to-OCF calculated?
EV-to-OCF is calculated from a company's financial statements. For Proto Labs (WBO:PRLB), the current EV-to-OCF is 21.74 as of Jul. 30, 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 €63.50 is trading 60.7% above its estimated GF Value™ of €39.51.
GuruFocus considers Proto Labs to be Significantly Overvalued.
Key valuation signals for WBO:PRLB:
EV-to-OCF: 21.74 (near median its 10-year median of 19.88)
GF Value™: €39.51 vs. price of €63.50 (60.7% above fair value)
Industry Position: 89.7% above the Industrial Products median (#2057 of 3076)
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
Get the complete analysis for WBO:PRLB
EV-to-OCF is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
WBO:PRLB has been successfully added to your 
