PDF Solutions Inc
PDFS- Exchange
- Nasdaq
- Industry
- Services-Prepackaged Software
- SEC CIK
- 0001120914
In the last 90 days, PDF Solutions Inc insiders filed 0 open-market purchases and 2 sales; 283 institutions reported holding it in 13F filings for Q2 2026, worth $2.75B in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in PDF Solutions Inc as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 188
- +6 vs. Q3 2025
- Shares held
- 30.6M
- +1.07M (+3.6%) vs. Q3 2025
- Total value
- $874.0M
- +$110.8M (+14.5%) vs. Q3 2025
- New holders
- 30
- 71 more added
- Sold out
- 24
- 60 more reduced
1 institution that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting PDFS on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 283 | $2.75B |
| Q1 2026 | 208 | $1.05B |
| Q4 2025 | 188 | $874.0M |
| Q3 2025 | 183 | $767.2M |
| Q2 2025 | 173 | $623.7M |
| Q1 2025 | 168 | $528.9M |
| Q4 2024 | 178 | $766.0M |
| Q3 2024 | 176 | $899.0M |
| Q2 2024 | 173 | $1.02B |
| Q1 2024 | 180 | $942.8M |
| Q4 2023 | 198 | $907.8M |
| Q3 2023 | 184 | $891.9M |
| Q2 2023 | 180 | $1.25B |
| Q1 2023 | 178 | $1.15B |
| Q4 2022 | 151 | $752.9M |
| Q3 2022 | 136 | $643.7M |
| Q2 2022 | 127 | $557.5M |
| Q1 2022 | 129 | $742.9M |
| Q4 2021 | 134 | $838.0M |
| Q3 2021 | 112 | $598.3M |
| Q2 2021 | 116 | $508.8M |
| Q1 2021 | 102 | $457.1M |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding PDF Solutions Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Pathstone Holdings, LLC | 0 | $0 | 0.00% | −15,897−100.0% | Sold out |
| Inceptionr LLC | 0 | $0 | 0.00% | −12,648−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −5,446−100.0% | Sold out |
| ISAM Funds (UK) Ltd | 0 | $0 | 0.00% | −3,888−100.0% | Sold out |
| Johnson Financial Group, Inc. | 0 | $0 | 0.00% | −3,200−100.0% | Sold out |
| MAI Capital Management | 0 | $0 | 0.00% | −174−100.0% | Sold out |
| Wealthspire Advisors, LLC | 0 | $0 | 0.00% | −174−100.0% | Sold out |
| National Bank of Canada | 0 | $0 | 0.00% | −152−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −110−100.0% | Sold out |
| Aster Capital Management (DIFC) Ltd | 0 | $0 | 0.00% | −83−100.0% | Sold out |
| Atlantic Trust, LLC | 0 | $0 | 0.00% | −13−100.0% | Sold out |
| Tortoise Investment Management, LLC | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| Kent Lake PR LLC | – | – | – | – | Not filed |