Proto Labs Inc(PRLB)Stock Analysis
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Rank #1,412 of 2,879 stocksTOP 50%
Rankings refresh quarterly once 80% of peers have filed (~45 days after quarter-end). Next update: ~Aug 14, 2026.
Revenue Growth
Profitability
Balance Sheet
Earnings Quality
Free Cash Flow
Institutional Flow
Revenue Scale
Dilution Risk
PRLB Stock Analysis & AI Quality Score
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 51.2/100 on a 32-signal composite quality model, placing it at rank #1,412 of 2,879 stocks — the top half of the AI-ranked universe. Areas of concern include revenue scale (37.8), which score below median versus the broader universe. Shareholder dilution risk is elevated at 34.1/100, reflecting ongoing share issuance or stock-based compensation. Based on the latest XBRL financial filings (Q1 2026), Proto Labs Inc reports quarterly revenue of $139.3M, net income of $8.1M, an operating margin of 7.1%. Top institutional holders of PRLB by reported 13-F value include BlackRock,, DISCIPLINED GROWTH INVESTORS /MN, 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 8 and 56 since 2026, currently 51.2 — an improving long-term trajectory across 36 quarterly and live scoring snapshots.
Revenue
Q1 2026
$139.3M
Net Income
Q1 2026
$8.1M
Free Cash Flow
Q1 2026
$14.0M
Operating Margin
Q1 2026
7.1%
ROIC
Q1 2026
1.4%
Revenue & Net Income
Earnings Per Share
Key Financials Over Time
Export Financial Table · Pro+Revenue
+6.4% YoYNet Income
+28.0% YoYOperating Income
+26.1% YoYEPS (Diluted)
+33.3% YoYTotal Assets
+2.7% YoYOp. Cash Flow
-4.3% YoY| Metric | FY 2025 | FY 2024 | FY 2022 | FY 2021 | FY 2020 | FY 2019 |
|---|---|---|---|---|---|---|
| Revenue | $533.1M +6.4% | $500.9M +2.6% | $488.4M +0.1% | $488.1M +12.4% | $434.4M -5.3% | $458.7M |
| Net Income | $21.2M +28.0% | $16.6M +116.0% | $-103.5M -410.0% | $33.4M -34.4% | $50.9M -20.1% | $63.7M |
| Operating Income | $25.1M +26.1% | $19.9M +120.3% | $-98.0M -342.9% | $40.3M -32.6% | $59.8M -25.1% | $79.9M |
| EPS (Diluted) | $0.88 +33.3% | $0.66 +117.5% | $-3.77 -411.6% | $1.21 -36.0% | $1.89 -19.6% | $2.35 |
| Total Assets | $763.4M +2.7% | $743.5M -7.3% | $802.2M -13.6% | $928.6M +24.8% | $744.2M +10.5% | $673.7M |
| Operating Cash Flow | $74.5M -4.3% | $77.8M +25.4% | $62.1M +12.4% | $55.2M -48.4% | $107.0M -7.8% | $116.1M |
AI Insight: PRLB Financial Trends
Proto Labs notched its highest quarterly revenue ($139M) and operating income ($10M) in Q1 2026, signaling a gradual but durable recovery from the Q4 2024 trough.
• Revenue grew from $122M in Q4 2024 to $139M in Q1 2026, a 14% rise over five quarters.
• Operating income rebounded from -$1M in Q4 2024 to $10M in Q1 2026, the highest in the observed period.
• Operating cash flow reached $29M in Q3 2025 then moderated to $18M in Q1 2026, reflecting typical seasonal variability.
⚠ Equity has only partially recovered to $683M in Q1 2026 after declining from $685M in Q2 2024 — book value erosion persists.
⚠ Operating margins remain thin (~7% in Q1 2026); any demand softness could quickly flip operating income negative as seen in Q4 2024.
⚠ Debt data is absent across all periods — leverage picture is incomplete and warrants scrutiny.
AI Insight: PRLB Ratio Trends
Q1 2026 marks Proto Labs' strongest quarter in the dataset, with operating margin hitting 7.1% and ROIC reaching 5.8% — a clear recovery from the Q4 2024 loss.
• Operating margin rebounded from -1.2% in Q4 2024 to 7.1% in Q1 2026, the highest level across all reported periods.
• ROIC improved from a trough of -0.9% in Q4 2024 to 5.8% in Q1 2026, surpassing the prior Q3 2024 peak of 5.1%.
• ROA expanded from 1.9% in Q1 2025 to 4.2% in Q1 2026, suggesting improving asset efficiency year-over-year.
⚠ Q4 seasonality has produced sharp margin compression two years running; Q4 2025 OpMargin dipped to 5.0% from Q3's 6.5%.
⚠ D/E data is absent across all periods, leaving leverage and balance-sheet risk unquantifiable from this dataset.
⚠ TTM OpMargin of 5.6% trails the Q1 2026 standalone 7.1%, reflecting drag from weaker prior quarters — sustainability of current run-rate unproven.
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Top Institutional Holders of PRLB
BlackRock, Inc.
$209.7M3,677,875 shDISCIPLINED GROWTH INVESTORS INC /MN
$142.4M2,497,355 shVANGUARD PORTFOLIO MANAGEMENT LLC
$87.7M1,538,530 shDIMENSIONAL FUND ADVISORS LP
$72.5M1,272,356 shSTATE STREET CORP
$62.3M1,092,000 shVANGUARD CAPITAL MANAGEMENT LLC
$59.3M1,039,741 shAMERICAN CAPITAL MANAGEMENT INC
$35.8M627,705 shGEODE CAPITAL MANAGEMENT, LLC
$33.1M580,201 shRENAISSANCE TECHNOLOGIES LLC
$29.7M520,251 shRubric Capital Management LP
$27.7M486,400 sh
| Fund | Value | Shares |
|---|---|---|
| BlackRock, Inc. | $209.7M | 3,677,875 |
| DISCIPLINED GROWTH INVESTORS INC /MN | $142.4M | 2,497,355 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $87.7M | 1,538,530 |
| DIMENSIONAL FUND ADVISORS LP | $72.5M | 1,272,356 |
| STATE STREET CORP | $62.3M | 1,092,000 |
| VANGUARD CAPITAL MANAGEMENT LLC | $59.3M | 1,039,741 |
| AMERICAN CAPITAL MANAGEMENT INC | $35.8M | 627,705 |
| GEODE CAPITAL MANAGEMENT, LLC | $33.1M | 580,201 |
| RENAISSANCE TECHNOLOGIES LLC | $29.7M | 520,251 |
| Rubric Capital Management LP | $27.7M | 486,400 |
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Popular Research
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.
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.