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, Q1 2026
Institutional positions in PDF Solutions Inc as of Mar 31, 2026. 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
- 208
- +24 vs. Q4 2025
- Shares held
- 32.2M
- +4.69M (+17.0%) vs. Q4 2025
- Total value
- $1.05B
- +$268.2M (+34.1%) vs. Q4 2025
- New holders
- 40
- 72 more added
- Sold out
- 16
- 59 more reduced
4 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding PDF Solutions Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| MAI Capital Management | 8 | $262 | 0.00% | +8 | New |
| Ankerstar Wealth, LLC | 6 | $196 | 0.00% | 00.0% | Unchanged |
| Assetmark, Inc | 5 | $164 | 0.00% | 00.0% | Unchanged |
| Cedar Mountain Advisors, LLC | 5 | $164 | 0.00% | 00.0% | Unchanged |
| Abound Wealth Management | 4 | $131 | 0.00% | +4 | New |
| Gilpin Wealth Management, LLC | 3 | $99 | 0.00% | 00.0% | Unchanged |
| Covestor Ltd | 3 | $0 | 0.00% | −30−90.9% | Reduced |
| Capital Advisors, Ltd. LLC | 8 | $0 | 0.00% | 00.0% | Unchanged |
| Mutual of America Capital Management LLC | 0 | $0 | 0.00% | −107,649−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −64,986−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −49,156−100.0% | Sold out |
| Arrowstreet Capital, Limited Partnership | 0 | $0 | 0.00% | −48,553−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −37,536−100.0% | Sold out |
| Susquehanna Fundamental Investments, LLC | 0 | $0 | 0.00% | −32,230−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −30,900−100.0% | Sold out |
| Prescott Group Capital Management, L.L.C. | 0 | $0 | 0.00% | −20,000−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −13,785−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −13,005−100.0% | Sold out |
| Guggenheim Capital LLC | 0 | $0 | 0.00% | −11,757−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −10,152−100.0% | Sold out |
| Kestra Advisory Services, LLC | 0 | $0 | 0.00% | −2,874−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −540−100.0% | Sold out |
| SRS Capital Advisors, Inc. | 0 | $0 | 0.00% | −131−100.0% | Sold out |
| Flagship Harbor Advisors, LLC | 0 | $0 | 0.00% | −6−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Comerica Bank | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |
| CIBC Private Wealth Group, LLC | – | – | – | – | Not filed |