Proto LabsSTU:PRZ -1.14%71 Beneish M-Score is -2.69 as of Jul. 13, 2026. GuruFocus rates STU:PRZ with a GF Score™ of 71/100 and a GF Value™ of €38.20 (Significantly Overvalued). The stock has 7 warning signs investors should review. Among 2,913 Industrial Products companies, Proto Labs ranks better than 71.51% on this metric.
The zones of discrimination for M-Score is as such:
An M-Score of equal or less than -1.78 suggests that the company is unlikely to be a manipulator.
An M-Score of greater than -1.78 signals that the company is likely to be a manipulator.
Good Sign:
Beneish M-Score -2.69 no higher than -1.78, which implies that the company is unlikely to be a manipulator.
The historical rank and industry rank for Proto Labs's Beneish M-Score or its related term are showing as below:
STU:PRZ'
s Beneish M-Score Range Over the Past 10 Years
Min: -3.09 Med: -2.79 Max: -1.83
Current: -2.69
During the past 13 years, the highest Beneish M-Score of Proto Labs was -1.83. The lowest was -3.09. And the median was -2.79.
Proto Labs Beneish M-Score Related Terms
Proto Labs Beneish M-Score Historical Data
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The historical data trend for Proto Labs's Beneish M-Score 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.
STU:PRZ vs RYZ, WOR, MEC: Beneish M-Score Comparison
For the Metal Fabrication subindustry, Proto Labs's Beneish M-Score, along with its competitors' market caps and Beneish M-Score 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 Beneish M-Score vs Industrial Products Industry
For the Industrial Products industry and Industrials sector, Proto Labs's Beneish M-Score distribution charts can be found below:
* The bar in red indicates where Proto Labs's Beneish M-Score falls into.
The M-score was created by Professor Messod Beneish. Instead of measuring the bankruptcy risk (Altman Z-Score) or business trend (Piotroski F-Score), M-score can be used to detect the risk of earnings manipulation. This is the original research paper on M-score.
The M-Score Variables:
The M-score of Proto Labs for today is based on a combination of the following eight different indices:
M
=
-4.84
+
0.92 * DSRI
+
0.528 * GMI
+
0.404 * AQI
+
0.892 * SGI
+
0.115 * DEPI
=
-4.84
+
0.92 * 1.0694
+
0.528 * 0.9884
+
0.404 * 0.944
+
0.892 * 1.0143
+
0.115 * 1.0161
-
0.172 * SGAI
+
4.679 * TATA
-
0.327 * LVGI
-
0.172 * 0.9822
+
4.679 * -0.063817
-
0.327 * 1.0706
=
-2.75
* 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.
Sales growth is not itself a measure of manipulation. However, growth companies are likely to find themselves under pressure to manipulate in order to keep up appearances.
DEPI greater than 1 indicates that assets are being depreciated at a slower rate. This suggests that the firm might be revising useful asset life assumptions upwards, or adopting a new method that is income friendly.
DEPI
=
(Depreciation_t-1 / (Depreciaton_t-1 + PPE_t-1))
/
(Depreciation_t / (Depreciaton_t + PPE_t))
=
(32.831 / (32.831 + 207.471))
/
(28.53 / (28.53 + 183.648))
=
0.136624
/
0.134463
=
1.0161
Note: If the Depreciation, Depletion and Amortization data is not available, we assume that the depreciation rate is constant and set the Depreciation Index to 1.
6. SGAI = Sales, General and Administrative expenses Index
Total accruals calculated as the change in working capital accounts other than cash less depreciation.
TATA
=
(IncomefromContinuingOperations_t
-
CashFlowsfromOperations_t)
/
TotalAssets_t
=
(NetIncome_t - NonOperatingIncome_t
-
CashFlowsfromOperations_t)
/
TotalAssets_t
=
(22.125 - 1.924
-
63.179)
/
673.461
=
-0.063817
An M-Score of equal or less than -1.78 suggests that the company is unlikely to be a manipulator. An M-Score of greater than -1.78 signals that the company is likely to be a manipulator.
Proto Labs has a M-score of -2.75 suggests that the company is unlikely to be a manipulator.
Proto Labs (STU:PRZ) has a Beneish M-Score of -2.69 as of Jul. 13, 2026. The Beneish M-score measures the likelihood of earnings manipulation. View historical data on Proto Labs and its competitors. According to the industry distribution chart, Proto Labs ranks #830 out of 2913 companies in the Industrial Products industry, placing it in the top 28.5%.
Is Proto Labs' Beneish M-Score too high?
Proto Labs' current Beneish M-Score is -2.69. Based on the distribution chart, Proto Labs ranks #830 out of 2913 companies in the Industrial Products industry, which is above the industry midpoint. Overall, Proto Labs has a GF Score™ of 71/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Proto Labs' Beneish M-Score compare to RYZ and WOR?
According to the Industrial Products industry distribution chart, Proto Labs ranks #830 out of 2913 companies for Beneish M-Score. This puts Proto Labs in the upper half of its industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Beneish M-Score for an Industrial Products company?
A good Beneish M-Score depends on the Industrial Products industry context. However, Beneish M-Score 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 Beneish M-Score mean?
A high Beneish M-Score can signal that a stock is expensive relative to its fundamentals. The Beneish M-score measures the likelihood of earnings manipulation. View historical data on Proto Labs and its competitors. Proto Labs's current Beneish M-Score is -2.69. 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 (STU:PRZ) is currently considered Significantly Overvalued. The stock's GF Value™ is €38.20, compared to a current price of €64.80 — trading 69.6% above its estimated fair value. The current Beneish M-Score is -2.69. Proto Labs' overall GF Score™ is 71/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Beneish M-Score calculated?
Beneish M-Score is calculated from a company's financial statements. For Proto Labs (STU:PRZ), the current Beneish M-Score is -2.69 as of Jul. 13, 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 (STU:PRZ) Overvalued in 2026?
Based on GuruFocus' analysis, Proto Labs stock appears to be overvalued.
The current stock price of €64.80 is trading 69.6% above its estimated GF Value™ of €38.20.
GuruFocus considers Proto Labs to be Significantly Overvalued.
Key valuation signals for STU:PRZ:
Beneish M-Score: -2.69
GF Value™: €38.20 vs. price of €64.80 (69.6% above fair value)
No single metric tells the full story. See the STU:PRZ 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.
71GF Score
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