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Livermore
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Proto Labs Inc

PRLB
Exchange
NYSE
Industry
Fabricated Structural Metal Products
SEC CIK
0001443669

In the last 90 days, Proto Labs Inc insiders filed 0 open-market purchases and 2 sales; 277 institutions reported holding it in 13F filings for Q2 2026, worth $1.83B in total; ARK Invest is the only superinvestor holding it.

Q1 2026 vs. Q4 2025

How the institutions holding Proto Labs Inc changed between Q4 2025 and Q1 2026.

All holders in Q1 2026All holders in Q4 2025

13F holders of PRLB: Q4 2025 compared with Q1 2026
MeasureQ4 2025Of which not filed for Q1 2026Q1 2026Change
Holders2344263+33
Shares21.8M2.67M22.1M+3.00M (+15.7%)
Value$1.10B$135.2M$1.26B+$293.1M (+30.3%)

4 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (53)

Institutions that held Proto Labs Inc at the end of Q1 2026 but not at the end of Q4 2025.

Institutions new to PRLB in Q1 2026
InstitutionSharesValue% of portfolio
Vanguard Portfolio Management LLC1,538,530$87.7M0.00%
Vanguard Capital Management LLC1,039,741$59.3M0.00%
Vanguard Fiduciary Trust Co153,581$8.76M0.00%
Marshall Wace, LLP68,355$3.90M0.00%
EAM Investors, LLC65,823$3.75M0.43%
Hussman Strategic Advisors, Inc.52,500$2.99M0.65%
Archon Capital Management LLC48,500$2.77M1.56%
Gsa Capital Partners LLP46,960$2.68M0.17%
Squarepoint Ops LLC41,320$2.36M0.01%
Integrated Quantitative Investments LLC31,505$1.80M0.33%
Bastion Asset Management Inc.28,270$1.60M0.49%
Gilder Gagnon Howe & Co LLC21,267$1.21M0.01%
Quantbot Technologies LP20,782$1.18M0.05%
Edgestream Partners, L.P.19,015$1.08M0.04%
HRT Financial LP18,081$1.03M0.00%
XTX Topco Ltd15,873$905.1K0.02%
Vanguard Asset Management, Ltd14,662$836.0K0.00%
Two Sigma Investments, LP12,200$695.6K0.00%
Legato Capital Management LLC12,113$690.7K0.06%
Susquehanna International Group, LLP12,060$687.7K0.00%
Simplex Trading, LLC10,779$614.6K0.02%
CI Private Wealth, LLC10,704$610.3K0.00%
Vanguard Global Advisers, LLC10,439$595.2K0.00%
Susquehanna Fundamental Investments, LLC10,325$588.7K0.02%
SEI Investments Co8,819$502.9K0.00%
Bridgewater Associates, LP7,690$438.5K0.00%
Winton Group Ltd7,564$431.3K0.02%
Independent Financial Group, LLC6,915$394.3K0.01%
Universal- Beteiligungs- und Servicegesellschaft mbH5,640$321.6K0.00%
Vanguard Investments Australia, Ltd.5,397$307.7K0.00%
Man Group plc5,114$291.6K0.00%
Centiva Capital, LP5,064$288.7K0.01%
Schonfeld Strategic Advisors LLC4,794$273.4K0.00%
Quadrature Capital Ltd4,611$262.9K0.00%
Angeles Wealth Management, LLC4,490$256.0K0.01%
Dynamic Technology Lab Private Ltd4,380$249.7K0.04%
Mirabella Financial Services LLP4,296$245.0K0.02%
LPL Financial LLC3,934$224.3K0.00%
Pictet Asset Management Holding SA3,774$215.2K0.00%
Victory Capital Management Inc3,699$210.9K0.00%
HighTower Advisors, LLC3,611$205.9K0.00%
Aquatic Capital Management LLC2,960$168.8K0.00%
USA Financial Portformulas Corp917$52.3K0.01%
Cullen/Frost Bankers, Inc.430$24.5K0.00%
Advisory Services Network, LLC367$20.9K0.00%
National Bank of Canada196$11.2K0.00%
Twin Peaks Wealth Advisors, LLC110$6.27K0.00%
Harbour Investments, Inc.85$4.85K0.00%
TD Waterhouse Canada Inc.75$4.36K0.00%
Barrow Hanley Mewhinney & Strauss LLC67$3.82K0.00%
Keating Financial Advisory Services, Inc.66$3.76K0.00%
Zions Bancorporation, National Association41$2.34K0.00%
Root Financial Partners, LLC7$3990.00%

Sold out (20)

Institutions that held Proto Labs Inc at the end of Q4 2025 and filed for Q1 2026 without it.

Institutions that sold out of PRLB in Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
CWA Asset Management Group, LLC41,508$2.10M
Essex Investment Management Co LLC15,504$784.3K
Verition Fund Management LLC14,600$738.6K
Versor Investments LP14,599$738.6K
OP Asset Management Ltd12,429$628.8K
Select Equity Group, L.P.11,919$603.0K
Guggenheim Capital LLC9,826$497.1K
Quest Partners LLC8,881$449.3K
ExodusPoint Capital Management, LP7,247$366.6K
Brevan Howard Capital Management LP6,800$344.0K
Two Sigma Advisers, LP6,100$308.6K
Everence Capital Management Inc4,100$207.0K
Modus Advisors, LLC1,133$57.3K
Aster Capital Management (DIFC) Ltd129$6.53K
Maseco LLP108$5.46K
Optiver Holding B.V.38$1.92K
SageView Advisory Group, LLC18$911
Optima Capital LLC10$506
Flagship Harbor Advisors, LLC6$304
Clearstead Advisors, LLC2$102

Not filed for Q1 2026 yet (4)

Institutions that held Proto Labs Inc at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding PRLB in Q4 2025 that haven't filed for Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
Vanguard Group Inc2,666,227$134.9M
Comerica Bank5,082$257.1K
CIBC Private Wealth Group, LLC173$8.75K
Global Retirement Partners, LLC3$152