What is the 13F Pro Quality Score for PRLB?

13F Pro ranks Proto Labs Inc (PRLB) on the 13F Pro Quality Score, a 0–100 composite of 32 fundamental signals including return on invested capital, free cash flow consistency, balance-sheet strength, earnings quality, growth durability, and valuation discipline. The score refreshes after each 10-K and 10-Q filing on SEC EDGAR. View PRLB's current score at https://13fpro.ai/company/PRLB (free sign-up required for the full ranking).

Which hedge funds own the most PRLB stock?

Based on the most recent Form 13F-HR filings on SEC EDGAR, the largest reported institutional holders of PRLB include BlackRock,, DISCIPLINED GROWTH INVESTORS /MN, VANGUARD PORTFOLIO MANAGEMENT. Holdings are reported quarterly within 45 days of quarter-end and updated on https://13fpro.ai/company/PRLB as soon as new 13F filings post.

Where does 13F Pro source PRLB data?

All Proto Labs Inc fundamentals and ownership data come directly from SEC EDGAR. Proto Labs Inc files with the SEC under CIK 1443669. 13F Pro ingests XBRL financial facts from 10-K and 10-Q filings, Form 13F-HR institutional holdings, and Form 4 insider transactions, with no third-party rewrites or estimates.

What sector is PRLB in?

Proto Labs Inc (PRLB) is classified in the Industrials sector. 13F Pro publishes sector-level fund flow analysis and quality leaders at https://13fpro.ai/research/sector/industrials.

How often is PRLB research updated on 13F Pro?

PRLB's fundamentals refresh within hours of each new 10-K or 10-Q filing on SEC EDGAR. Institutional ownership updates after each quarterly 13F filing window. Insider transactions update after each Form 4 filing. The 13F Pro Quality Score recalculates after every fundamentals refresh.

Proto Labs Inc(PRLB)Stock Analysis

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13F Pro Quality Score

53.5/100

Rank #1,382 of 2,960 stocksTOP 50%

View Industrials peers →

Rankings refresh quarterly once 80% of peers have filed (~45 days after quarter-end). Next update: ~Nov 14, 2026.

Revenue Growth

43.2/100

Profitability

57.7/100

Balance Sheet

64.9/100

Earnings Quality

80.7/100

Free Cash Flow

56.0/100

Institutional Flow

33.6/100

Revenue Scale

38.7/100

Dilution Risk

33.0/100

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Why PRLB Scores 54/100

exact factor attribution · 2026-09-11

PRLB's composite is driven by earnings quality and earnings growth, held back by scale and revenue growth. Bars show each factor's exact push vs. a median company, using the same weights the ranking engine applies.

Earnings quality

+3.1 pts

81th pct

Earnings growth

+1.6 pts

81th pct

Capital efficiency

+1.5 pts

65th pct

Profitability

+1.2 pts

58th pct

Free cash flow

+0.9 pts

56th pct

Institutional flow

-0.8 pts

34th pct

Shareholder dilution

-0.8 pts

33th pct

Revenue growth

-1.4 pts

43th pct

Scale

-1.7 pts

39th pct

Latest change (2026-07-31): 51 → 53 · ↑ Profit margin 50→63; despite ↓ Earnings growth 71→49

Factor percentiles are cross-sectional ranks across the ~2,800-stock scored universe, computed from SEC EDGAR filings. Not investment advice.

PRLB Stock Analysis & AI Quality Score

Data updated 2026-09-11

AI stock analysis and institutional research for Proto Labs Inc (PRLB), a Industrials sector company. 13F Pro's AI-powered ranking engine scores PRLB at 53.5/100 on a 32-signal composite quality model, placing it at rank #1,382 of 2,960 stocks — the top half of the AI-ranked universe. PRLB scores in the top quartile across earnings quality (80.7). Areas of concern include institutional flow (33.6) and revenue scale (38.7), which score below median versus the broader universe. Shareholder dilution risk is elevated at 33.0/100, reflecting ongoing share issuance or stock-based compensation. Based on the latest XBRL financial filings (Q2 2026), Proto Labs Inc reports quarterly revenue of $149.3M, net income of $9.2M, an operating margin of 7.6%. Top institutional holders of PRLB by reported 13-F value include BlackRock, DISCIPLINED GROWTH INVESTORS, VANGUARD PORTFOLIO MANAGEMENT, based on the most recent SEC filings. PRLB trades on the NYSE exchange and files with the SEC under CIK 1443669. 13F Pro's AI research platform runs 10 specialized AI analysts — value, growth, momentum, macro, and activist specialists — that debate PRLB daily and publish AI-generated analysis with cited SEC sources. The platform aggregates historical XBRL financial facts, 10-Q and 10-K filings, insider Form 4 transactions, and institutional 13-F holdings for Proto Labs Inc directly from SEC EDGAR. Proto Labs Inc's 13F Pro composite quality score has ranged between 53 and 57 since 2026, currently 53.5 — a stable long-term trajectory across 48 quarterly and live scoring snapshots.

Revenue

Q2 2026

$149.3M

Net Income

Q2 2026

$9.2M

Free Cash Flow

Q2 2026

$9.2M

Operating Margin

Q2 2026

7.6%

ROIC

Q2 2026

6.6%

Period

Revenue & Net Income

Earnings Per Share

Key Financials Over Time

Export Financial Table · Pro

Revenue

+6.4% YoY

$533.1MFY 2025

FY22 $488.4MFY23 $503.9MFY24 $500.9MFY25 $533.1M

Net Income

+28.0% YoY

$21.2MFY 2025

FY22 $-103.5MFY23 $17.2MFY24 $16.6MFY25 $21.2M

Operating Income

+26.1% YoY

$25.1MFY 2025

FY22 $-98.0MFY23 $28.2MFY24 $19.9MFY25 $25.1M

EPS (Diluted)

+33.3% YoY

$0.88FY 2025

FY22 $-3.77FY23 $0.66FY24 $0.66FY25 $0.88

Total Assets

+2.7% YoY

$763.4MFY 2025

FY22 $802.2MFY23 $772.4MFY24 $743.5MFY25 $763.4M

Op. Cash Flow

-4.3% YoY

$74.5MFY 2025

FY22 $62.1MFY23 $73.3MFY24 $77.8MFY25 $74.5M

Free Cash Flow

-13.1% YoY

$59.7MFY 2025

FY22 $40.4MFY23 $45.2MFY24 $68.7MFY25 $59.7M

Metric	FY 2025	FY 2024	FY 2023	FY 2022	FY 2021	FY 2020
Revenue	$533.1M +6.4%	$500.9M -0.6%	$503.9M +3.2%	$488.4M +0.1%	$488.1M +12.4%	$434.4M
Net Income	$21.2M +28.0%	$16.6M -3.6%	$17.2M +116.6%	$-103.5M -410.0%	$33.4M -34.4%	$50.9M
Operating Income	$25.1M +26.1%	$19.9M -29.3%	$28.2M +128.7%	$-98.0M -342.9%	$40.3M -32.6%	$59.8M
EPS (Diluted)	$0.88 +33.3%	$0.66 +0.0%	$0.66 +117.5%	$-3.77 -411.6%	$1.21 -36.0%	$1.89
Total Assets	$763.4M +2.7%	$743.5M -3.7%	$772.4M -3.7%	$802.2M -13.6%	$928.6M +24.8%	$744.2M
Operating Cash Flow	$74.5M -4.3%	$77.8M +6.2%	$73.3M +18.0%	$62.1M +12.4%	$55.2M -48.4%	$107.0M
Free Cash Flow	$59.7M -13.1%	$68.7M +52.0%	$45.2M +11.8%	$40.4M +92.0%	$21.0M -64.9%	$60.0M

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Available Research

13F Pro tracks comprehensive data for Proto Labs Inc including:

SEC EDGAR filings (10-K, 10-Q, 8-K)

XBRL financial facts (revenue, EPS, margins)

Insider transactions (Form 4)

Institutional 13F holdings

Quality rankings (32 signals)

AI analyst debates & daily meetings

Historical financial trends

Peer comparison & sector analysis

Top Institutional Holders of PRLB

BlackRock, Inc.
$317.6M3,896,222 sh
DISCIPLINED GROWTH INVESTORS INC /MN
$194.0M2,380,514 sh
VANGUARD PORTFOLIO MANAGEMENT LLC
$130.4M1,599,765 sh
DIMENSIONAL FUND ADVISORS LP
$93.9M1,152,305 sh
STATE STREET CORP
$92.8M1,138,462 sh
VANGUARD CAPITAL MANAGEMENT LLC
$86.0M1,054,623 sh
AMERICAN CAPITAL MANAGEMENT INC
$50.5M619,845 sh
GEODE CAPITAL MANAGEMENT, LLC
$50.1M614,028 sh
RENAISSANCE TECHNOLOGIES LLC
$38.2M469,251 sh
PRUDENTIAL FINANCIAL INC
$37.3M457,810 sh

Fund	Value	Shares
BlackRock, Inc.	$317.6M	3,896,222
DISCIPLINED GROWTH INVESTORS INC /MN	$194.0M	2,380,514
VANGUARD PORTFOLIO MANAGEMENT LLC	$130.4M	1,599,765
DIMENSIONAL FUND ADVISORS LP	$93.9M	1,152,305
STATE STREET CORP	$92.8M	1,138,462
VANGUARD CAPITAL MANAGEMENT LLC	$86.0M	1,054,623
AMERICAN CAPITAL MANAGEMENT INC	$50.5M	619,845
GEODE CAPITAL MANAGEMENT, LLC	$50.1M	614,028
RENAISSANCE TECHNOLOGIES LLC	$38.2M	469,251
PRUDENTIAL FINANCIAL INC	$37.3M	457,810

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Is PRLB a good stock to buy?

13F Pro's AI-powered analysis of Proto Labs Inc (PRLB) draws on SEC EDGAR-sourced fundamentals, institutional 13F holdings, and insider Form 4 transactions in the Industrials sector (listed on NYSE). The 32-signal AI Quality Score, current rank, and full bull/bear verdict for PRLB are available on the PRLB stock profile dashboard — with the same data, AI insights, ratios, and institutional activity refreshed after every 10-K, 10-Q, 13F, and Form 4 filing. PRLB is classified as a small company.

Which hedge funds own PRLB?

Institutional investors are required to disclose their holdings quarterly via SEC Form 13F. 13F Pro aggregates these filings to show which hedge funds, mutual funds, and asset managers are buying or selling PRLB. Combined with insider transaction data from Form 4 filings and AI-powered analysis from 10 specialized research agents, 13F Pro provides a comprehensive view of Proto Labs Inc's investment landscape.