Proto Labs Inc (PRLB) stock

PRLBNYSEFabricated Structural Metal ProductsFiscal year ends December 31

Financials through Q3 FY2026, quarter ended Sep 30, 2026Last filing: 10-Q on Oct 29, 2026Score 14/3048% above fair value

$69.11+1.18 (+1.74%)

Close on Nov 11, 2026Market cap $1.65BP/E 48.3Yield –

Proto Labs statistics

99 measures from SEC filings and the closing price. Hover a name for the formula; the last column is the median of companies in the same industry group.

Important dates

Next earnings: Feb 5, 2027 (estimated, before the open)
Last ex-dividend date: No dividends
Fundamentals through: Sep 30, 2026
Share price as of: Nov 11, 2026

Valuation ratiosIndustry

Market Cap: $1.65B; $843.81M
Enterprise Value: $1.50B; $742.42M
PE Ratio: 48.33; 22.25
PS Ratio: 2.85; 1.59
PB Ratio: 2.35; 2.49
P/TBV Ratio: 4.00; 3.63
P/FCF Ratio: 33.94; 20.28
P/OCF Ratio: 22.85; 14.32

Enterprise valuationIndustry

EV / Sales: 2.59; 1.69
EV / EBITDA: 20.03; 12.57
EV / EBIT: 35.31; 17.90
EV / FCF: 30.83; 22.89

Share statisticsIndustry

Shares Outstanding: 24M; 38M
Shares Change (YoY): -0.06%; -0.03%
Shares Change (QoQ): -0.21%; 0.00%
Float: 23M; 29M
Shares Held by Insiders: 1.90%; 11.1%
Shares Held by Institutions: 94.2%; 80.6%

Short sellingIndustry

Short Interest: 616,285; –
Short Interest Change: -5.65%; 1.01%
Short % of Float: 2.63%; 3.35%
Short % of Shares Outstanding: 2.58%; 2.90%
Days to Cover: 2.41; 3.41

Stock price statisticsIndustry

52-Week High: $99.96; –
52-Week Low: $46.07; –
20-Day Moving Average: $77.94; –
50-Day Moving Average: $84.39; –
200-Day Moving Average: $73.72; –
Average True Range (14): $4.54; –
Price Change (1 Week): 3.96%; -1.39%
Price Change (1 Month): -24.7%; -2.56%
Price Change (3 Months): -25.1%; -8.12%
Price Change (6 Months): -3.81%; 6.00%
Price Change (YTD): 36.6%; 8.75%
Price Change (1 Year): 41.0%; 9.20%
Price Change (3 Years): 99.9%; 35.9%
Price Change (5 Years): 16.6%; -2.08%
Price Change (10 Years): 33.5%; 77.3%
Average Volume (10 Days): 403,036; –
Average Volume (20 Days): 296,442; –
Average Volume (90 Days): 226,282; –
Relative Volume: 1.11; 0.80
Relative Strength Index (14): 37.3; 50.2
Volatility (1 Year): 50.3%; 41.1%
Beta (5 Years): 1.29; 0.97

MarginsIndustry

Gross Margin: 45.2%; 28.4%
Operating Margin: 7.32%; 6.60%
Pretax Margin: 8.33%; 6.29%
Profit Margin: 6.04%; 4.44%
EBITDA Margin: 12.9%; 12.0%
FCF Margin: 8.39%; 5.02%

Returns on capitalIndustry

Return on Equity (ROE): 5.13%; 8.74%
Return on Assets (ROA): 4.48%; 4.50%
Return on Invested Capital (ROIC): 5.62%; 7.64%
Return on Capital Employed (ROCE): 5.80%; 6.65%

Financial positionIndustry

Current Ratio: 3.65; 2.59
Quick Ratio: 3.27; 1.05

GrowthIndustry

Revenue Growth (YoY): 11.8%; 9.61%
Net Income Growth (YoY): 136.0%; 19.8%
EPS Growth (YoY): 134.4%; 22.0%
FCF Growth (YoY): -28.2%; -1.14%
Revenue Growth (3Y CAGR): 2.96%; 0.40%
Revenue Growth (5Y CAGR): 4.18%; 6.17%
EPS Growth (5Y CAGR): -14.2%; 9.56%

EfficiencyIndustry

Asset Turnover: 0.74; 0.87
Inventory Turnover: 20.75; 3.69
Revenue Per Employee: $254.16K; $422.68K
Profits Per Employee: $15.36K; $30.44K
Employee Count: 2,280; 2,200
WACC: 11.3%; 9.30%

Income statement (TTM)Industry

Revenue: $579.49M; $898.20M
Gross Profit: $261.97M; $261.97M
Operating Income: $42.44M; $45.72M
Pretax Income: $48.28M; $48.28M
Net Income: $35.02M; $34.96M
EBITDA: $74.83M; $72.78M
EPS (Diluted): $1.43; $1.89

Balance sheetIndustry

Cash & Short-Term Investments: $151.15M; $74.66M
Net Cash (Debt): $151.15M; $1.57M
Net Cash Per Share: $6.33; $0.07
Equity (Book Value): $701.80M; $324.12M
Book Value Per Share: $29.40; $10.46
Tangible Book Value: $412.15M; $83.75M
Working Capital: $202.91M; $220.05M

Cash flow (TTM)Industry

Operating Cash Flow: $72.20M; $65.60M
Capital Expenditures: -$23.59M; -$23.37M
Free Cash Flow: $48.61M; $38.12M
FCF Per Share: $2.04; $1.39

Dividends and yieldsIndustry

Earnings Yield: 2.12%; 3.71%
FCF Yield: 2.95%; 3.27%
Buyback Yield: 0.99%; 0.91%
Shareholder Yield: 0.99%; 2.15%

Taxes and interestIndustry

Income Tax: $13.26M; $9.88M
Effective Tax Rate: 27.5%; 23.4%

Scores and fair valueIndustry

Graham Number: $30.76; $39.16
Graham Upside: -55.5%; -42.3%
Altman Z-Score: 10.97; 4.05
Piotroski F-Score: 7; 6
Beneish M-Score: -2.74; -2.60

Total return vs. the S&P 500

Price change plus reinvested dividends, to the close on Nov 11, 2026. The S&P 500 is measured by the SPY fund.

Period	PRLB	S&P 500	Difference	PRLB per year	S&P 500 per year
1 month	-26.4%	-2.4%	−23.9 pts
3 months	-23.6%	-1.2%	−22.4 pts
Year to date	+36.6%	+12.3%	+24.3 pts
1 year	+39.6%	+12.4%	+27.1 pts
3 years	+99.9%	+78.8%	+21.0 pts	+26.0%	+21.4%
5 years	+18.5%	+75.2%	−56.7 pts	+3.4%	+11.9%
10 years	+33.5%	+311.1%	−277.6 pts	+2.9%	+15.2%

Short interest

Shares sold short and not yet covered, reported by brokers to FINRA twice a month. Latest settlement date Oct 30, 2026.

1M PRLB shares were sold short on Oct 30, 2026, down 5.7% from the previous report, or 2.63% of the shares available to trade. At recent volumes it would take 2.4 days to buy them back. Over the last 20 sessions, 57.0% of the volume reported to FINRA was short selling.

Settlement date	Shares short	Change	Avg. daily volume	Days to cover
Oct 30, 2026	616,285	-5.7%	255,670	2.4
Oct 15, 2026	653,218	-11.7%	206,201	3.2
Sep 30, 2026	739,819	-1.9%	300,784	2.5
Sep 15, 2026	753,948	+22.5%	156,444	4.8
Aug 31, 2026	615,345	-6.2%	174,870	3.5
Aug 14, 2026	656,363	-2.8%	219,185	3.0
Jul 31, 2026	675,490	-0.1%	164,302	4.1
Jul 15, 2026	676,418	-0.5%	245,151	2.8
Jun 30, 2026	679,916	-2.9%	307,334	2.2
Jun 15, 2026	700,174	+8.7%	210,085	3.3
May 29, 2026	644,067	+0.1%	192,703	3.3
May 15, 2026	643,691	+5.0%	223,294	2.9