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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 3,677,875 | $209.7M | 0.00% | +58,871+1.6% | Added |
| Disciplined Growth Investors Inc | 2,497,355 | $142.4M | 2.91% | −176,374−6.6% | Reduced |
| Vanguard Portfolio Management LLC | 1,538,530 | $87.7M | 0.00% | +1,538,530 | New |
| Dimensional Fund Advisors LP | 1,272,356 | $72.5M | 0.02% | −4,205−0.3% | Reduced |
| State Street Corp | 1,092,000 | $62.3M | 0.00% | +3,794+0.3% | Added |
| Vanguard Capital Management LLC | 1,039,741 | $59.3M | 0.00% | +1,039,741 | New |
| American Capital Management Inc | 627,705 | $35.8M | 1.92% | −3,606−0.6% | Reduced |
| Geode Capital Management, LLC | 580,201 | $33.1M | 0.00% | +21,901+3.9% | Added |
| Renaissance Technologies LLC | 520,251 | $29.7M | 0.05% | +26,700+5.4% | Added |
| Rubric Capital Management LP | 486,400 | $27.7M | 0.34% | −636,938−56.7% | Reduced |
| Arrowstreet Capital, Limited Partnership | 463,780 | $26.4M | 0.01% | +3,162+0.7% | Added |
| FMR LLC | 422,356 | $24.1M | 0.00% | +300,256+245.9% | Added |
| Prudential Financial Inc | 400,241 | $22.8M | 0.03% | +217,415+118.9% | Added |
| Driehaus Capital Management LLC | 369,136 | $21.0M | 0.15% | −13,019−3.4% | Reduced |
| Charles Schwab Investment Management Inc | 360,203 | $20.5M | 0.00% | −2,810−0.8% | Reduced |
| Nuveen, LLC | 316,939 | $18.1M | 0.00% | −8,811−2.7% | Reduced |
| S Squared Technology, LLC | 296,103 | $16.9M | 6.39% | −10,000−3.3% | Reduced |
| Morgan Stanley | 293,581 | $16.7M | 0.00% | −12,031−3.9% | Reduced |
| Northern Trust Corp | 266,951 | $15.2M | 0.00% | +10,683+4.2% | Added |
| D. E. Shaw & Co., Inc. | 225,651 | $12.9M | 0.01% | +12,783+6.0% | Added |
| Nordea Investment Management AB | 214,381 | $12.0M | 0.01% | −10,058−4.5% | Reduced |
| Jupiter Asset Management Ltd | 194,832 | $11.1M | 0.06% | 00.0% | Unchanged |
| Panagora Asset Management Inc | 174,698 | $9.96M | 0.04% | −887−0.5% | Reduced |
| Hillsdale Investment Management Inc. | 174,384 | $9.94M | 0.27% | +6,100+3.6% | Added |
| UBS Group AG | 168,750 | $9.62M | 0.00% | −6,666−3.8% | Reduced |
| Vanguard Fiduciary Trust Co | 153,581 | $8.76M | 0.00% | +153,581 | New |
| Qube Research & Technologies Ltd | 148,622 | $8.47M | 0.01% | +133,672+894.1% | Added |
| Goldman Sachs Group Inc | 140,943 | $8.04M | 0.00% | −19,661−12.2% | Reduced |
| Bank of New York Mellon Corp | 139,917 | $7.98M | 0.00% | −3,078−2.2% | Reduced |
| Principal Financial Group Inc | 133,613 | $7.62M | 0.00% | −3,057−2.2% | Reduced |
| Bank of America Corp | 129,113 | $7.36M | 0.00% | +35,784+38.3% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 125,510 | $7.16M | 0.02% | −5,257−4.0% | Reduced |
| Rice Hall James & Associates, LLC | 113,589 | $6.48M | 0.36% | −974−0.9% | Reduced |
| Gagnon Securities LLC | 110,889 | $6.32M | 1.46% | −659−0.6% | Reduced |
| Public Sector Pension Investment Board | 105,560 | $6.02M | 0.02% | −4,791−4.3% | Reduced |
| Lazard Asset Management LLC | 99,333 | $5.66M | 0.01% | +23,759+31.4% | Added |
| First Trust Advisors LP | 92,870 | $5.30M | 0.00% | −13,059−12.3% | Reduced |
| Invesco Ltd. | 88,576 | $5.05M | 0.00% | −19,122−17.8% | Reduced |
| JPMorgan Chase & Co | 87,579 | $4.85M | 0.00% | −31,056−26.2% | Reduced |
| American Century Companies Inc | 78,842 | $4.50M | 0.00% | −303−0.4% | Reduced |
| Trexquant Investment LP | 68,688 | $3.92M | 0.03% | +41,061+148.6% | Added |
| Marshall Wace, LLP | 68,355 | $3.90M | 0.00% | +68,355 | New |
| EAM Investors, LLC | 65,823 | $3.75M | 0.43% | +65,823 | New |
| UBS Asset Management Americas Inc | 65,741 | $3.75M | 0.00% | +1,098+1.7% | Added |
| Rhumbline Advisers | 65,114 | $3.71M | 0.00% | +399+0.6% | Added |
| Polar Asset Management Partners Inc. | 60,369 | $3.44M | 0.08% | −23,033−27.6% | Reduced |
| Ameriprise Financial Inc | 58,539 | $3.34M | 0.00% | +9,822+20.2% | Added |
| Legal & General Group Plc | 58,401 | $3.33M | 0.00% | −5,526−8.6% | Reduced |
| Jane Street Group, LLC | 57,355 | $3.27M | 0.00% | −53,240−48.1% | Reduced |
| Franklin Resources Inc | 56,959 | $3.25M | 0.00% | +24,022+72.9% | Added |
| AQR Capital Management LLC | 55,117 | $3.14M | 0.00% | +3,857+7.5% | Added |
| Hussman Strategic Advisors, Inc. | 52,500 | $2.99M | 0.65% | +52,500 | New |
| Archon Capital Management LLC | 48,500 | $2.77M | 1.56% | +48,500 | New |
| Zacks Investment Management | 47,586 | $2.71M | 0.02% | +41,170+641.7% | Added |
| Swiss National Bank | 47,100 | $2.69M | 0.00% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 46,960 | $2.68M | 0.17% | +46,960 | New |
| Assenagon Asset Management S.A. | 46,776 | $2.67M | 0.00% | +19,031+68.6% | Added |
| ARK Investment Management LLCSuperinvestorARK Invest | 45,704 | $2.61M | 0.02% | −11,040−19.5% | Reduced |
| Citadel Advisors LLC | 44,518 | $2.54M | 0.00% | +32,057+257.3% | Added |
| Squarepoint Ops LLC | 41,320 | $2.36M | 0.01% | +41,320 | New |
| Intech Investment Management LLC | 38,971 | $2.22M | 0.02% | +28,966+289.5% | Added |
| AIMZ Investment Advisors, LLC | 38,728 | $2.21M | 0.68% | −900−2.3% | Reduced |
| Polen Capital Management LLC | 37,594 | $2.14M | 0.01% | +33,446+806.3% | Added |
| Price T Rowe Associates Inc | 33,169 | $1.89M | 0.00% | +5,135+18.3% | Added |
| Point72 Asset Management, L.P. | 32,389 | $1.85M | 0.00% | −7,518−18.8% | Reduced |
| Integrated Quantitative Investments LLC | 31,505 | $1.80M | 0.33% | +31,505 | New |
| Federated Hermes, Inc. | 31,371 | $1.79M | 0.00% | +623+2.0% | Added |
| Voya Investment Management LLC | 30,139 | $1.72M | 0.00% | −79−0.3% | Reduced |
| Deutsche Bank AG | 30,070 | $1.71M | 0.00% | +2,302+8.3% | Added |
| Bastion Asset Management Inc. | 28,270 | $1.60M | 0.49% | +28,270 | New |
| Quantinno Capital Management LP | 27,716 | $1.58M | 0.00% | +13,781+98.9% | Added |
| Millennium Management LLC | 25,829 | $1.47M | 0.00% | −75,703−74.6% | Reduced |
| Acadian Asset Management LLC | 24,497 | $1.39M | 0.00% | −4,971−16.9% | Reduced |
| Virginia Retirement Systems Et Al | 23,000 | $1.31M | 0.01% | −400−1.7% | Reduced |
| California State Teachers Retirement System | 22,967 | $1.31M | 0.00% | −177−0.8% | Reduced |
| Bridgeway Capital Management, LLC | 22,000 | $1.25M | 0.03% | −91,876−80.7% | Reduced |
| Gilder Gagnon Howe & Co LLC | 21,267 | $1.21M | 0.01% | +21,267 | New |
| Gabelli Funds LLC | 21,132 | $1.20M | 0.01% | 00.0% | Unchanged |
| Teacher Retirement System of Texas | 20,920 | $1.19M | 0.00% | −3,439−14.1% | Reduced |
| Quantbot Technologies LP | 20,782 | $1.18M | 0.05% | +20,782 | New |
| Great West Life Assurance Co | 19,845 | $1.13M | 0.00% | 00.0% | Unchanged |
| Edgestream Partners, L.P. | 19,015 | $1.08M | 0.04% | +19,015 | New |
| Alliancebernstein L.P. | 20,740 | $1.05M | 0.00% | 00.0% | Unchanged |
| HRT Financial LP | 18,081 | $1.03M | 0.00% | +18,081 | New |
| State of Tennessee, Treasury Department | 17,728 | $1.01M | 0.00% | 00.0% | Unchanged |
| XTX Topco Ltd | 15,873 | $905.1K | 0.02% | +15,873 | New |
| Thrivent Financial for Lutherans | 15,805 | $901.0K | 0.00% | −466−2.9% | Reduced |
| Captrust Financial Advisors | 15,800 | $900.9K | 0.00% | −49−0.3% | Reduced |
| Toroso Investments, LLC | 15,558 | $887.1K | 0.00% | +2,561+19.7% | Added |
| HSBC Holdings PLC | 15,378 | $867.3K | 0.00% | +1,754+12.9% | Added |
| Citigroup Inc | 15,208 | $867.2K | 0.00% | −105−0.7% | Reduced |
| Campbell & CO Investment Adviser LLC | 15,188 | $866.0K | 0.05% | −26,332−63.4% | Reduced |
| Vanguard Asset Management, Ltd | 14,662 | $836.0K | 0.00% | +14,662 | New |
| Engineers Gate Manager LP | 14,500 | $826.8K | 0.01% | −233−1.6% | Reduced |
| Gabelli & Co Investment Advisers, Inc. | 14,500 | $826.8K | 0.12% | 00.0% | Unchanged |
| Dark Forest Capital Management LP | 14,248 | $812.4K | 0.07% | −1,695−10.6% | Reduced |
| Alps Advisors Inc | 14,160 | $807.4K | 0.00% | −3,553−20.1% | Reduced |
| Amundi | 14,082 | $803.0K | 0.00% | +2,031+16.9% | Added |
| Bailard, Inc. | 13,981 | $797.2K | 0.02% | +700+5.3% | Added |
| Haven Private, LLC | 13,715 | $782.0K | 0.34% | +5,402+65.0% | Added |