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.
13F holders, Q1 2026
Institutional positions in Proto Labs Inc as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 263
- +33 vs. Q4 2025
- Shares held
- 22.1M
- +3.00M (+15.7%) vs. Q4 2025
- Total value
- $1.26B
- +$293.1M (+30.3%) vs. Q4 2025
- New holders
- 53
- 75 more added
- Sold out
- 20
- 80 more reduced
4 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting PRLB on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 277 | $1.83B |
| Q1 2026 | 263 | $1.26B |
| Q4 2025 | 234 | $1.10B |
| Q3 2025 | 213 | $1.09B |
| Q2 2025 | 202 | $866.4M |
| Q1 2025 | 188 | $764.5M |
| Q4 2024 | 199 | $837.2M |
| Q3 2024 | 193 | $634.3M |
| Q2 2024 | 204 | $662.3M |
| Q1 2024 | 203 | $774.1M |
| Q4 2023 | 219 | $845.8M |
| Q3 2023 | 185 | $571.4M |
| Q2 2023 | 193 | $775.6M |
| Q1 2023 | 199 | $745.6M |
| Q4 2022 | 199 | $593.9M |
| Q3 2022 | 210 | $881.5M |
| Q2 2022 | 227 | $1.16B |
| Q1 2022 | 236 | $1.31B |
| Q4 2021 | 245 | $1.31B |
| Q3 2021 | 264 | $1.89B |
| Q2 2021 | 273 | $2.65B |
| Q1 2021 | 316 | $3.49B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Proto Labs Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Polen Capital Management LLC | 37,594 | $2.14M | 0.01% | +33,446+806.3% | Added |
| AIMZ Investment Advisors, LLC | 38,728 | $2.21M | 0.68% | −900−2.3% | Reduced |
| Intech Investment Management LLC | 38,971 | $2.22M | 0.02% | +28,966+289.5% | Added |
| Squarepoint Ops LLC | 41,320 | $2.36M | 0.01% | +41,320 | New |
| Citadel Advisors LLC | 44,518 | $2.54M | 0.00% | +32,057+257.3% | Added |
| ARK Investment Management LLCSuperinvestorARK Invest | 45,704 | $2.61M | 0.02% | −11,040−19.5% | Reduced |
| Assenagon Asset Management S.A. | 46,776 | $2.67M | 0.00% | +19,031+68.6% | Added |
| Gsa Capital Partners LLP | 46,960 | $2.68M | 0.17% | +46,960 | New |
| Swiss National Bank | 47,100 | $2.69M | 0.00% | 00.0% | Unchanged |
| Zacks Investment Management | 47,586 | $2.71M | 0.02% | +41,170+641.7% | Added |
| Archon Capital Management LLC | 48,500 | $2.77M | 1.56% | +48,500 | New |
| Hussman Strategic Advisors, Inc. | 52,500 | $2.99M | 0.65% | +52,500 | New |
| AQR Capital Management LLC | 55,117 | $3.14M | 0.00% | +3,857+7.5% | Added |
| Franklin Resources Inc | 56,959 | $3.25M | 0.00% | +24,022+72.9% | Added |
| Jane Street Group, LLC | 57,355 | $3.27M | 0.00% | −53,240−48.1% | Reduced |
| Legal & General Group Plc | 58,401 | $3.33M | 0.00% | −5,526−8.6% | Reduced |
| Ameriprise Financial Inc | 58,539 | $3.34M | 0.00% | +9,822+20.2% | Added |
| Polar Asset Management Partners Inc. | 60,369 | $3.44M | 0.08% | −23,033−27.6% | Reduced |
| Rhumbline Advisers | 65,114 | $3.71M | 0.00% | +399+0.6% | Added |
| UBS Asset Management Americas Inc | 65,741 | $3.75M | 0.00% | +1,098+1.7% | Added |
| EAM Investors, LLC | 65,823 | $3.75M | 0.43% | +65,823 | New |
| Marshall Wace, LLP | 68,355 | $3.90M | 0.00% | +68,355 | New |
| Trexquant Investment LP | 68,688 | $3.92M | 0.03% | +41,061+148.6% | Added |
| American Century Companies Inc | 78,842 | $4.50M | 0.00% | −303−0.4% | Reduced |
| JPMorgan Chase & Co | 87,579 | $4.85M | 0.00% | −31,056−26.2% | Reduced |
| Invesco Ltd. | 88,576 | $5.05M | 0.00% | −19,122−17.8% | Reduced |
| First Trust Advisors LP | 92,870 | $5.30M | 0.00% | −13,059−12.3% | Reduced |
| Lazard Asset Management LLC | 99,333 | $5.66M | 0.01% | +23,759+31.4% | Added |
| Public Sector Pension Investment Board | 105,560 | $6.02M | 0.02% | −4,791−4.3% | Reduced |
| Gagnon Securities LLC | 110,889 | $6.32M | 1.46% | −659−0.6% | Reduced |
| Rice Hall James & Associates, LLC | 113,589 | $6.48M | 0.36% | −974−0.9% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 125,510 | $7.16M | 0.02% | −5,257−4.0% | Reduced |
| Bank of America Corp | 129,113 | $7.36M | 0.00% | +35,784+38.3% | Added |
| Principal Financial Group Inc | 133,613 | $7.62M | 0.00% | −3,057−2.2% | Reduced |
| Bank of New York Mellon Corp | 139,917 | $7.98M | 0.00% | −3,078−2.2% | Reduced |
| Goldman Sachs Group Inc | 140,943 | $8.04M | 0.00% | −19,661−12.2% | Reduced |
| Qube Research & Technologies Ltd | 148,622 | $8.47M | 0.01% | +133,672+894.1% | Added |
| Vanguard Fiduciary Trust Co | 153,581 | $8.76M | 0.00% | +153,581 | New |
| UBS Group AG | 168,750 | $9.62M | 0.00% | −6,666−3.8% | Reduced |
| Hillsdale Investment Management Inc. | 174,384 | $9.94M | 0.27% | +6,100+3.6% | Added |
| Panagora Asset Management Inc | 174,698 | $9.96M | 0.04% | −887−0.5% | Reduced |
| Jupiter Asset Management Ltd | 194,832 | $11.1M | 0.06% | 00.0% | Unchanged |
| Nordea Investment Management AB | 214,381 | $12.0M | 0.01% | −10,058−4.5% | Reduced |
| D. E. Shaw & Co., Inc. | 225,651 | $12.9M | 0.01% | +12,783+6.0% | Added |
| Northern Trust Corp | 266,951 | $15.2M | 0.00% | +10,683+4.2% | Added |
| Morgan Stanley | 293,581 | $16.7M | 0.00% | −12,031−3.9% | Reduced |
| S Squared Technology, LLC | 296,103 | $16.9M | 6.39% | −10,000−3.3% | Reduced |
| Nuveen, LLC | 316,939 | $18.1M | 0.00% | −8,811−2.7% | Reduced |
| Charles Schwab Investment Management Inc | 360,203 | $20.5M | 0.00% | −2,810−0.8% | Reduced |
| Driehaus Capital Management LLC | 369,136 | $21.0M | 0.15% | −13,019−3.4% | Reduced |
| Prudential Financial Inc | 400,241 | $22.8M | 0.03% | +217,415+118.9% | Added |
| FMR LLC | 422,356 | $24.1M | 0.00% | +300,256+245.9% | Added |
| Arrowstreet Capital, Limited Partnership | 463,780 | $26.4M | 0.01% | +3,162+0.7% | Added |
| Rubric Capital Management LP | 486,400 | $27.7M | 0.34% | −636,938−56.7% | Reduced |
| Renaissance Technologies LLC | 520,251 | $29.7M | 0.05% | +26,700+5.4% | Added |
| Geode Capital Management, LLC | 580,201 | $33.1M | 0.00% | +21,901+3.9% | Added |
| American Capital Management Inc | 627,705 | $35.8M | 1.92% | −3,606−0.6% | Reduced |
| Vanguard Capital Management LLC | 1,039,741 | $59.3M | 0.00% | +1,039,741 | New |
| State Street Corp | 1,092,000 | $62.3M | 0.00% | +3,794+0.3% | Added |
| Dimensional Fund Advisors LP | 1,272,356 | $72.5M | 0.02% | −4,205−0.3% | Reduced |
| Vanguard Portfolio Management LLC | 1,538,530 | $87.7M | 0.00% | +1,538,530 | New |
| Disciplined Growth Investors Inc | 2,497,355 | $142.4M | 2.91% | −176,374−6.6% | Reduced |
| BlackRock, Inc. | 3,677,875 | $209.7M | 0.00% | +58,871+1.6% | Added |
| CWA Asset Management Group, LLC | 0 | $0 | 0.00% | −41,508−100.0% | Sold out |
| Essex Investment Management Co LLC | 0 | $0 | 0.00% | −15,504−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −14,600−100.0% | Sold out |
| Versor Investments LP | 0 | $0 | 0.00% | −14,599−100.0% | Sold out |
| OP Asset Management Ltd | 0 | $0 | 0.00% | −12,429−100.0% | Sold out |
| Select Equity Group, L.P. | 0 | $0 | 0.00% | −11,919−100.0% | Sold out |
| Guggenheim Capital LLC | 0 | $0 | 0.00% | −9,826−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −8,881−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −7,247−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −6,800−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −6,100−100.0% | Sold out |
| Everence Capital Management Inc | 0 | $0 | 0.00% | −4,100−100.0% | Sold out |
| Modus Advisors, LLC | 0 | $0 | 0.00% | −1,133−100.0% | Sold out |
| Aster Capital Management (DIFC) Ltd | 0 | $0 | 0.00% | −129−100.0% | Sold out |
| Maseco LLP | 0 | $0 | 0.00% | −108−100.0% | Sold out |
| Optiver Holding B.V. | 0 | $0 | 0.00% | −38−100.0% | Sold out |
| SageView Advisory Group, LLC | 0 | $0 | 0.00% | −18−100.0% | Sold out |
| Optima Capital LLC | 0 | $0 | 0.00% | −10−100.0% | Sold out |
| Flagship Harbor Advisors, LLC | 0 | $0 | 0.00% | −6−100.0% | Sold out |
| Clearstead Advisors, LLC | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Comerica Bank | – | – | – | – | Not filed |
| CIBC Private Wealth Group, LLC | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |