PRLB Proto Labs Inc: institutional ownership and insider trading
294 funds reported holding $1.97B of Proto Labs Inc in their latest 13F filings; in Q2 2026 funds net bought $21.2M, with 37 new positions and 26 funds selling out; over the last 12 months insiders bought $0 and sold $3.34M on the open market.
Famous investors holding PRLB
- Renaissance Technologies (Renaissance Technologies): $38.2M, 0.1% of the portfolio
- Cathie Wood (ARK Investment Management): $2.89M, 0.0% of the portfolio
- D. E. Shaw (D. E. Shaw & Co.): $17.2M, 0.0% of the portfolio
- Ken Griffin (Citadel Advisors): $8.06M, 0.0% of the portfolio
- Izzy Englander (Millennium Management): $7.58M, 0.0% of the portfolio
- Two Sigma (Two Sigma Investments): $1.04M, 0.0% of the portfolio
Largest institutional holders of PRLB
- BlackRock, Inc. (BLK) — $318M
- DISCIPLINED GROWTH INVESTORS INC /MN — $194M
- VANGUARD GROUP INC — $135M
- VANGUARD PORTFOLIO MANAGEMENT LLC — $130M
- DIMENSIONAL FUND ADVISORS LP — $93.9M
- STATE STREET CORP (STT, STT-PG) — $92.8M
- VANGUARD CAPITAL MANAGEMENT LLC — $86.0M
- AMERICAN CAPITAL MANAGEMENT INC — $50.5M
- GEODE CAPITAL MANAGEMENT, LLC — $50.1M
- RENAISSANCE TECHNOLOGIES LLC — $38.2M
Recent PRLB insider trades
- Sep 24, 2026: Schumacher Daniel sold 5,000 shares ($477K)
- Sep 17, 2026: Schumacher Daniel sold 5,000 shares ($426K)
- Jun 2, 2026: Wehrwein Sven sold 2,000 shares ($155K)
- May 12, 2026: Kenison Michael R. sold 23,463 shares ($1.64M)
5%+ owners
- DISCIPLINED GROWTH INVESTORS INC /MN: 10.0% (Schedule 13G/A, filed Aug 14, 2026)
- Vanguard Portfolio Management: 6.5% (Schedule 13G, filed Apr 29, 2026)
- Vanguard Capital Management: 5.1% (Schedule 13G, filed Apr 30, 2026)