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Proto LabsPRLB -3.30%67 Shiller PE Ratio is 62.18 as of Aug. 20, 2026, which is 118% above its 10-year median of 28.49. GuruFocus rates PRLB with a GF Score™ of 67/100 and a GF Value™ of $46.27 (Significantly Overvalued). The stock has 7 warning signs investors should review. Among 1,815 Industrial Products companies, Proto Labs ranks worse than 77.13% on this metric.
As of today (2026-08-20), Proto Labs's current share price is $82.08. Proto Labs's E10 for the quarter that ended in Jun. 2026 was $1.32. Proto Labs's Shiller PE Ratio for today is 62.18.
The historical rank and industry rank for Proto Labs's Shiller PE Ratio or its related term are showing as below:
PRLB'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 11.54 Med: 28.49 Max: 120.31
Current: 62.18
During the past years, Proto Labs's highest Shiller PE Ratio was 120.31. The lowest was 11.54. And the median was 28.49.
PRLB's Shiller PE Ratio is ranked worse than 77.13% of 1815
companies
in the Industrial Products industry
Industry Median: 29
vs PRLB: 62.18
E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.
Proto Labs's adjusted earnings per share data for the three months ended in Jun. 2026 was $0.370. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $1.32 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Proto Labs (NYSE:PRLB) Shiller PE Ratio Explanation
Compared with the regular PE Ratio, which works poorly for cyclical businesses, the Shiller PE Ratio smoothed out the fluctuations of profit margins during business cycles. Therefore it is more accurate in reflecting the valuation of the company.
If a company has consistent business performance, the Shiller PE Ratio should give similar results to regular PE Ratio.
Compared with the PS Ratio, the Shiller PE Ratio makes the comparison between different industries more meaningful.
Be Aware
Shiller PE Ratio assumes that over the long term, businesses and profitability revert to their means. If a company's business model does not work in the future compared with the past, Shiller PE Ratio and PS Ratio will give false valuations.
Proto Labs Shiller PE Ratio Related Terms
Proto Labs Shiller PE Ratio Historical Data
* Premium members only.
The historical data trend for Proto Labs's Shiller PE Ratio 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.
PRLB vs RYZ, WOR, MEC: Shiller PE Ratio Comparison
For the Metal Fabrication subindustry, Proto Labs's Shiller PE Ratio, along with its competitors' market caps and Shiller PE Ratio 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 Shiller PE Ratio vs Industrial Products Industry
For the Industrial Products industry and Industrials sector, Proto Labs's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Proto Labs's Shiller PE Ratio falls into.
For Shiller PE Ratio, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller PE Ratio is also called PE10.
The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.
Proto Labs's Shiller PE Ratio for today 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's E10 for the quarter that ended in Jun. 2026 is calculated as:
For example, Proto Labs's adjusted earnings per share data for the three months ended in Jun. 2026 was:
Add all the adjusted EPS together and divide 10 will get our E10.
Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.
Proto Labs (PRLB) has a Shiller PE Ratio of 62.18 as of Aug. 20, 2026. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on Proto Labs and its competitors. This is 118% above median its historical median of 28.49. Over the past decade, Proto Labs' Shiller PE Ratio has ranged from 11.54 to 120.31. According to the industry distribution chart, Proto Labs ranks #1400 out of 1815 companies in the Industrial Products industry, placing it in the top 77.1%.
Is Proto Labs' Shiller PE Ratio too high?
Proto Labs' current Shiller PE Ratio of 62.18 is 118% above median its 10-year median of 28.49. Over the past 10 years, this metric has ranged from a low of 11.54 to a high of 120.31. The Industrial Products industry median Shiller PE Ratio is 29.00. Proto Labs' value of 62.18 is 114.4% above this industry median. Based on the distribution chart, Proto Labs ranks #1400 out of 1815 companies in the Industrial Products industry, which is in the bottom quartile relative to peers. Overall, Proto Labs has a GF Score™ of 67/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Proto Labs' Shiller PE Ratio compare to RYZ and WOR?
According to the Industrial Products industry distribution chart, Proto Labs ranks #1400 out of 1815 companies for Shiller PE Ratio. This places Proto Labs in the lower half of its industry. The industry median Shiller PE Ratio is 29.00. Proto Labs' value of 62.18 is 114.4% above this benchmark. Historically, Proto Labs' own Shiller PE Ratio has ranged from 11.54 to 120.31 over the past decade. While the company's 10-year median is 28.49 vs. the industry median of 29.00, 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 Shiller PE Ratio for an Industrial Products company?
The median Shiller PE Ratio among Industrial Products companies is 29.00, based on 1,815 companies in the industry. Companies in the top quartile (top 25%) have a Shiller PE Ratio significantly above this median, while those in the bottom quartile fall well below. However, Shiller PE Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Proto Labs's current Shiller PE Ratio of 62.18 is 114.4% 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 Shiller PE Ratio mean?
A high Shiller PE Ratio can signal that a stock is expensive relative to its fundamentals. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on Proto Labs and its competitors. For the Industrial Products industry, the median Shiller PE Ratio is 29.00 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Proto Labs's current Shiller PE Ratio is 62.18, which is 118% above median its own 10-year median of 28.49. 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 (PRLB) is currently considered Significantly Overvalued. The stock's GF Value™ is $46.27, compared to a current price of $82.08 — trading 77.4% above its estimated fair value. The current Shiller PE Ratio is 62.18, which is 118% above median its 10-year median of 28.49 and 114.4% above the Industrial Products industry median of 29.00. Proto Labs' overall GF Score™ is 67/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Shiller PE Ratio calculated?
Shiller PE Ratio is calculated from a company's financial statements. For Proto Labs (PRLB), the current Shiller PE Ratio is 62.18 as of Aug. 20, 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 (PRLB) Overvalued in 2026?
Based on GuruFocus' analysis, Proto Labs stock appears to be overvalued.
The current stock price of $82.08 is trading 77.4% above its estimated GF Value™ of $46.27.
GuruFocus considers Proto Labs to be Significantly Overvalued.
Key valuation signals for PRLB:
Shiller PE Ratio: 62.18 (118% above median its 10-year median of 28.49)
GF Value™: $46.27 vs. price of $82.08 (77.4% above fair value)
Industry Position: 114.4% above the Industrial Products median (#1400 of 1815)
No single metric tells the full story. See the 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.
67GF Score
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