Proto Labs (PRLB) Stock Fundamentals, Analysis & Risk Signals

Health score, price, valuation, risk signals, and key metrics at a glance.

Proto Labs

NYSE•Industrials•Metal Fabrication

$83.24+4.15(0.05%)Pre-market

Market Cap

$2.10B

P/E

69.0x

P/S

3.8x

P/B

3.0x

Proto Labs, Inc., together with its subsidiaries, operates as a digital manufacturer of custom parts in the United States and Europe. It offers manufacturing services, such as molding, computer numerical control machining, 3D printing, and sheet metal to developers, engineers, and supply chain teams. The company was incorporated in 1999 and is headquartered in Maple Plain, Minnesota.

How this company scores

GoodMetricSide Score: 71/100

Strongest: Growth (23/25); weakest: Balance Sheet & Red Flags (15/25).

Profitability15/25

Growth23/25

Balance Sheet & Red Flags15/25

Cash & Earnings Quality18/25

Strengths

Rising earningsInterest easily coveredCash-backed earningsConsistent free cash flow

Valuation vs. 5-year range

Today's multiple positioned against its own trailing range — a visual premium/discount check.

P/E · 69.0x5y range 30.6x – 79.9x

Currently above its 16-quarter median.

P/S · 3.8x5y range 1.4x – 4.0x

Currently above its 20-quarter median.

P/B · 3.0x5y range 1.0x – 3.0x

Watch items

Data-driven signals worth keeping an eye on across the last 8 quarters

High Risk

Margin Pressure

Red Flag

The company posted negative operating margins in recent quarters — core operations are unprofitable.

Price & Volume

Market Cap $2.10B

Metrics at a Glance

as of June 2026

Revenue & Profit

Revenue, EBITDA, operating income, net income, EPS, and shares

TTM Revenue: $560.54M
Q. Revenue: $149.34M
TTM EBITDA: $69.52M
TTM Op. Income: $36.81M
Q. Op. Income: $11.36M
TTM Net Income: $30.48M
Q. Net Income: $9.15M
EPS: $0.38
Shares Out.: $23.97M

$560.54M in TTM revenue grew 10.2% YoY, reaching $149.34M last quarter. TTM EBITDA of $69.52M and TTM operating income of $36.81M show growth is flowing through to the bottom line. TTM net income of $30.48M means revenue is converting into profit. Across the last 8 quarters, TTM revenue has risen for 5 consecutive quarters — an improving trend.

Margins

Gross, EBITDA, operating, and net margin trends

Gross Margin: 46.4%
EBITDA Margin: 13.0%
Op. Margin: 7.6%
Net Margin: 6.1%

Op. margin of 7.6% is up 3.9% YoY — cost efficiency is improving. Net margin at 6.1% and gross margin of 46.4% show how much of each revenue dollar survives to profit. Across the last 8 quarters, operating margin has risen for 2 consecutive quarters — an improving trend.

Price Ratios

P/E, P/S, P/B, EV/EBITDA, FCF yield, and earnings yield

P/E Ratio: 69.0x
P/S Ratio: 3.8x
P/B Ratio: 3.0x

At 69.0x P/E, the stock trades above typical market levels — the market expects above-average growth. P/S of 3.8x and P/B of 3.0x provide additional context. Use the growth and margin sections to judge whether the multiple is justified. Over the past year, P/E is up 7% — a weakening trend.

Assets & Liabilities

Total assets, cash, debt, book value, and leverage

Total Assets: $791.30M
Cash: $127.92M
Long-Term Debt: N/A
Book Value: $691.73M
D/E Ratio: N/A
Debt/EBITDA: 0.0

Cash Flow

Operating cash flow, free cash flow, FCF margin, and earnings quality

Op. Cash Flow: $15.44M
TTM Free Cash Flow: $56.66M
FCF Margin: 10.1%
FCF / Net Income: 1.9

TTM FCF of $56.66M on $15.44M in operating cash flow. The FCF / Net Income ratio of 1.9x means free cash flow covers net income — earnings are backed by cash. Over the past year, free cash flow is down 14% — an improving trend.