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

$85.61+1.25(0.01%)After hours

Market Cap

$1.66B

P/E

47.3x

P/S

2.9x

P/B

2.4x

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: 69/100

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

Profitability15/25

Growth23/25

Balance Sheet & Red Flags15/25

Cash & Earnings Quality16/25

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 · 47.3x5y range 30.6x – 79.9x

Currently near its 16-quarter median.

P/S · 2.9x5y range 1.4x – 3.4x

Currently above its 20-quarter median.

P/B · 2.4x5y range 1.0x – 2.8x

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 $1.66B

Metrics at a Glance

as of September 2026

Revenue & Profit

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

TTM Revenue: $579.49M
Q. Revenue: $154.32M
TTM EBITDA: $74.83M
TTM Op. Income: $42.44M
Q. Op. Income: $14.44M
TTM Net Income: $35.02M
Q. Net Income: $11.76M
EPS: $0.49
Shares Out.: $24.02M

$579.49M in TTM revenue grew 11.8% YoY, reaching $154.32M last quarter. TTM EBITDA of $74.83M and TTM operating income of $42.44M show growth is flowing through to the bottom line. TTM net income of $35.02M means revenue is converting into profit. Across the last 8 quarters, TTM revenue has risen for 6 consecutive quarters — an improving trend.

Margins

Gross, EBITDA, operating, and net margin trends

Gross Margin: 44.5%
EBITDA Margin: 14.6%
Op. Margin: 9.4%
Net Margin: 7.6%

Op. margin of 9.4% is up 2.8% YoY — cost efficiency is improving. Net margin at 7.6% and gross margin of 44.5% show how much of each revenue dollar survives to profit. Across the last 8 quarters, operating margin has risen for 3 consecutive quarters — an improving trend.

Price Ratios

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

P/E Ratio: 47.3x
P/S Ratio: 2.9x
P/B Ratio: 2.4x

At 47.3x P/E, the stock trades above typical market levels — the market expects above-average growth. P/S of 2.9x and P/B of 2.4x provide additional context. Use the growth and margin sections to judge whether the multiple is justified. Over the past year, P/E is down 41% — an improving trend.

Assets & Liabilities

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

Total Assets: $808.02M
Cash: $133.78M
Long-Term Debt: N/A
Book Value: $701.80M
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: $22.77M
TTM Free Cash Flow: $48.61M
FCF Margin: 8.4%
FCF / Net Income: 1.4

TTM FCF of $48.61M on $22.77M in operating cash flow. The FCF / Net Income ratio of 1.4x means free cash flow covers net income — earnings are backed by cash. Over the past year, free cash flow is down 28% — a weakening trend.