PI IMPINJ INC: institutional ownership and insider trading
353 funds reported holding $5.44B of IMPINJ INC in their latest 13F filings; in Q2 2026 funds net bought $122M, with 62 new positions and 38 funds selling out; over the last 12 months insiders bought $0 and sold $163M on the open market.
Famous investors holding PI
- Izzy Englander (Millennium Management): $120M, 0.0% of the portfolio
- Ken Griffin (Citadel Advisors): $27.4M, 0.0% of the portfolio
- D. E. Shaw (D. E. Shaw & Co.): $2.68M, 0.0% of the portfolio
- George Soros (Soros Fund Management): $305K, 0.0% of the portfolio
Largest institutional holders of PI
- FMR LLC — $654M
- BlackRock, Inc. (BLK) — $637M
- VANGUARD GROUP INC — $603M
- VANGUARD PORTFOLIO MANAGEMENT LLC — $314M
- STATE STREET CORP (STT, STT-PG) — $244M
- Capital International Investors — $207M
- VANGUARD CAPITAL MANAGEMENT LLC — $184M
- Capital World Investors — $161M
- MILLENNIUM MANAGEMENT LLC — $120M
- AMERICAN CENTURY COMPANIES INC — $115M
Recent PI insider trades
- Sep 21, 2026: Baker Cary sold 8,892 shares ($1.65M)
- Sep 15, 2026: Washington Miron sold 800 shares ($139K)
- Aug 10, 2026: Baker Cary sold 1,429 shares ($264K)
- Jun 9, 2026: Sylebra Capital Llc sold 64,633 shares ($8.30M)
Members of Congress trading PI
- May 14, 2025: Marjorie Taylor Greene bought $1.00K–$15.0K
- May 5, 2025: Marjorie Taylor Greene bought $1.00K–$15.0K
- Apr 4, 2025: Marjorie Taylor Greene bought $1.00K–$15.0K
- Mar 3, 2025: Marjorie Taylor Greene bought $1.00K–$15.0K
5%+ owners
- Vanguard Portfolio Management: 7.2% (Schedule 13G, filed Apr 29, 2026)
- STATE STREET CORPORATION: 5.6% (Schedule 13G, filed Aug 7, 2026)