PDFS PDF SOLUTIONS INC: institutional ownership and insider trading
295 funds reported holding $2.91B of PDF SOLUTIONS INC in their latest 13F filings; in Q2 2026 funds net bought $500M, with 93 new positions and 20 funds selling out; over the last 12 months insiders bought $0 and sold $228K on the open market.
Famous investors holding PDFS
- Ken Griffin (Citadel Advisors): $8.04M, 0.0% of the portfolio
- Izzy Englander (Millennium Management): $3.25M, 0.0% of the portfolio
- Two Sigma (Two Sigma Investments): $396K, 0.0% of the portfolio
- Ray Dalio (Bridgewater Associates): $340K, 0.0% of the portfolio
Largest institutional holders of PDFS
- BlackRock, Inc. (BLK) — $393M
- NEEDHAM INVESTMENT MANAGEMENT LLC — $146M
- WASATCH ADVISORS LP — $135M
- VANGUARD CAPITAL MANAGEMENT LLC — $118M
- VANGUARD PORTFOLIO MANAGEMENT LLC — $103M
- STATE STREET CORP (STT, STT-PG) — $98.2M
- BARROW HANLEY MEWHINNEY & STRAUSS LLC — $93.4M
- VANGUARD GROUP INC — $88.1M
- Ranger Investment Management, L.P. — $81.4M
- SNYDER CAPITAL MANAGEMENT L P — $73.2M
Recent PDFS insider trades
- Aug 31, 2026: Strojwas Andrzej sold 3,394 shares ($151K)
- Aug 12, 2026: Zhang Shuo sold 1,501 shares ($77.3K)
- May 13, 2025: Gustafson Michael B bought 7,500 shares ($146K)
- Feb 25, 2025: Kibarian John Kachig bought 50,000 shares ($1.13M)
5%+ owners
- Wasatch Advisors LP: 6.3% (Schedule 13G, filed Oct 9, 2026)
- Needham Investment Management L.L.C.: 5.1% (Schedule 13G, filed May 14, 2026)