PRLB Proto Labs Inc
Proto Labs Inc (PRLB) Institutional Ownership
What the institutions did with PRLB last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 3.9M | 17.3% |
| DISCIPLINED GROWTH INVESTORS INC /MN | 2.4M | 10.6% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.6M | 7.1% |
| DIMENSIONAL FUND ADVISORS LP | 1.2M | 5.1% |
| STATE STREET CORP | 1.1M | 5.1% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.1M | 4.7% |
| AMERICAN CAPITAL MANAGEMENT INC | 619.8K | 2.8% |
| GEODE CAPITAL MANAGEMENT, LLC | 614.0K | 2.7% |
| RENAISSANCE TECHNOLOGIES LLC | 469.3K | 2.1% |
| PRUDENTIAL FINANCIAL INC | 457.8K | 2.0% |
| FMR LLC | 442.7K | 2.0% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 440.8K | 2.0% |
| Nuveen, LLC | 420.1K | 1.9% |
| GOLDMAN SACHS GROUP INC | 403.2K | 1.8% |
| Driehaus Capital Management LLC | 370.2K | 1.6% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 354.2K | 1.6% |
| MORGAN STANLEY | 314.8K | 1.4% |
| S SQUARED TECHNOLOGY, LLC | 288.1K | 1.3% |
| NORTHERN TRUST CORP | 284.6K | 1.3% |
| FIRST TRUST ADVISORS LP | 224.8K | 1.0% |
| JPMORGAN CHASE & CO | 224.7K | 1.0% |
| D. E. Shaw & Co., Inc. | 211.4K | 0.9% |
| NORDEA INVESTMENT MANAGEMENT AB | 203.9K | 0.9% |
| Hillsdale Investment Management Inc. | 191.6K | 0.9% |
| JUPITER ASSET MANAGEMENT LTD | 188.5K | 0.8% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Rubric Capital Management LP | Reduced | 486.4K | 108.7K | -377.7K |
| GOLDMAN SACHS GROUP INC | Increased | 140.9K | 403.2K | +262.2K |
| BlackRock, Inc. | Increased | 3.7M | 3.9M | +218.3K |
| Qube Research & Technologies Ltd | Sold Out | 148.6K | 0 | -148.6K |
| JPMORGAN CHASE & CO | Increased | 87.6K | 224.7K | +137.1K |
| FIRST TRUST ADVISORS LP | Increased | 92.9K | 224.8K | +131.9K |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 1.3M | 1.2M | -120.1K |
| DISCIPLINED GROWTH INVESTORS INC /MN | Reduced | 2.5M | 2.4M | -116.8K |
| Nuveen, LLC | Increased | 316.9K | 420.1K | +103.1K |
| LAZARD ASSET MANAGEMENT LLC | Reduced | 99.3K | 7.1K | -92.2K |
| JANE STREET GROUP, LLC | Increased | 57.4K | 143.5K | +86.2K |
| ACADIAN ASSET MANAGEMENT LLC | Increased | 24.5K | 99.2K | +74.7K |
| UBS Group AG | Reduced | 168.8K | 97.3K | -71.4K |
| MILLENNIUM MANAGEMENT LLC | Increased | 25.8K | 93.0K | +67.1K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 1.5M | 1.6M | +61.2K |
| Polar Asset Management Partners Inc. | Sold Out | 60.4K | 0 | -60.4K |
| PRUDENTIAL FINANCIAL INC | Increased | 400.2K | 457.8K | +57.6K |
| Roubaix Capital, LLC | New | 0 | 55.4K | +55.4K |
| Trexquant Investment LP | Reduced | 68.7K | 14.2K | -54.5K |
| MARSHALL WACE, LLP | Reduced | 68.4K | 16.9K | -51.4K |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 520.3K | 469.3K | -51.0K |
| Archon Capital Management LLC | Sold Out | 48.5K | 0 | -48.5K |
| Edgestream Partners, L.P. | Increased | 19.0K | 65.8K | +46.8K |
| STATE STREET CORP | Increased | 1.1M | 1.1M | +46.5K |
| CITADEL ADVISORS LLC | Increased | 44.5K | 88.6K | +44.1K |
| GSA CAPITAL PARTNERS LLP | Reduced | 47.0K | 10.6K | -36.4K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 580.2K | 614.0K | +33.8K |
| ExodusPoint Capital Management, LP | New | 0 | 33.7K | +33.7K |
| Integrated Quantitative Investments LLC | Sold Out | 31.5K | 0 | -31.5K |
| AEGON ASSET MANAGEMENT UK Plc | New | 0 | 31.0K | +31.0K |
| ALGERT GLOBAL LLC | Increased | 6.3K | 36.7K | +30.4K |
| Bastion Asset Management Inc. | Sold Out | 28.3K | 0 | -28.3K |
| Campbell & CO Investment Adviser LLC | Increased | 15.2K | 42.8K | +27.6K |
| Squarepoint Ops LLC | Reduced | 41.3K | 16.4K | -24.9K |
| BNP PARIBAS FINANCIAL MARKETS | Increased | 12.6K | 36.5K | +23.9K |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | Increased | 10.3K | 33.8K | +23.4K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Reduced | 463.8K | 440.8K | -23.0K |
| Assenagon Asset Management S.A. | Reduced | 46.8K | 24.5K | -22.3K |
| MORGAN STANLEY | Increased | 293.6K | 314.8K | +21.2K |
| Quantbot Technologies LP | Sold Out | 20.8K | 0 | -20.8K |
| FMR LLC | Increased | 422.4K | 442.7K | +20.3K |
| SG Capital Management LLC | New | 0 | 20.1K | +20.1K |
| Invesco Ltd. | Increased | 88.6K | 108.4K | +19.8K |
| NORTHERN TRUST CORP | Increased | 267.0K | 284.6K | +17.6K |
| Hillsdale Investment Management Inc. | Increased | 174.4K | 191.6K | +17.2K |
| CITIGROUP INC | Increased | 15.2K | 31.3K | +16.1K |
| SEI INVESTMENTS CO | Increased | 8.8K | 24.1K | +15.3K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 1.0M | 1.1M | +14.9K |
| D. E. Shaw & Co., Inc. | Reduced | 225.7K | 211.4K | -14.3K |
| Jackson Creek Investment Advisors LLC | Increased | 8.4K | 22.5K | +14.1K |
| XTX Topco Ltd | Reduced | 15.9K | 2.7K | -13.2K |
| Jump Financial, LLC | New | 0 | 13.2K | +13.2K |
| State of Wyoming | Increased | 3.4K | 16.4K | +12.9K |
| WELLS FARGO & COMPANY/MN | Increased | 11.7K | 24.6K | +12.9K |
| Russell Investments Group, Ltd. | Increased | 5.7K | 18.2K | +12.5K |
| Engineers Gate Manager LP | Increased | 14.5K | 26.8K | +12.3K |
| Legato Capital Management LLC | Sold Out | 12.1K | 0 | -12.1K |
| AMERIPRISE FINANCIAL INC | Increased | 58.5K | 69.8K | +11.2K |
| ROYAL BANK OF CANADA | Reduced | 13.1K | 1.9K | -11.2K |
| Jefferies Financial Group Inc. | New | 0 | 10.7K | +10.7K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.