PDF Solutions Inc (PDFS)
SERVICES-PREPACKAGED SOFTWARE
PDF Solutions Inc (PDFS) is listed on Nasdaq, where it has traded since July 26, 2001.
- Listed On
- Nasdaq
- Listed Since
- July 26, 2001
- Employees
- 600
- Market Cap
- $1.9B
About PDF Solutions Inc
PDF Solutions Inc provides products and services designed to empower organizations across the semiconductor and electronics ecosystem to connect, collect, manage, and analyze data about design, equipment, manufacturing, and test to improve the yield and quality of their products and operational efficiency. The Company's products, services, and solutions include proprietary software, physical intellectual property (IP) for integrated circuit (IC) designs, electrical measurement hardware tools, methodologies, and professional services.
Institutional ownership
In 13F filings for the quarter ended June 30, 2026, 272 institutions reported holding PDFS, with 38.9 million shares worth $2.7 billion in aggregate. The largest reported holder was BlackRock, with 5.6 million shares worth $392.9 million. Of the 5 largest holders listed below, all 5 added shares during the quarter.
| Institution | Shares | Value | Quarter change |
|---|---|---|---|
| BlackRock | 5,550,335 | $393M | Added 14.06% |
| Vanguard | 3,438,968 | $243M | Added 12.35% |
| Needham Investment Management | 2,065,000 | $146M | Added 2.09% |
| State Street | 1,386,498 | $98M | Added 16.28% |
| Wasatch Advisors | 1,380,739 | $98M | Added 171.94% |
Form 13F is a quarterly report that institutional investment managers with at least $100 million in qualifying securities file with the SEC. It lists long positions as of the last day of the quarter and is due within 45 days of quarter end, so these holdings describe that date rather than today.
Frequently asked questions
What is PDFS?
PDF Solutions Inc (PDFS) is listed on Nasdaq, where it has traded since July 26, 2001.
Who are the largest institutional holders of PDFS?
In 13F filings for the quarter ended June 30, 2026, the largest reported holders of PDFS were BlackRock, Vanguard and Needham Investment Management.
How many institutions own PDFS?
272 institutions reported a position in PDFS for the quarter ended June 30, 2026, worth $2.7 billion in total.
Did institutions buy or sell PDFS last quarter?
Of the 5 largest reported holders, all 5 added shares during the quarter. Every reported holder and its change is on the SentiSense ownership page for PDFS.
Every reported institutional holder, plus insider and congressional trades in PDFS, on SentiSense.