PDFS — PDF SOLUTIONS INC
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2016-01-04.
Performance
Technicals
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Measured signals that fired on PDFS
| date | signal | measured base rate |
|---|---|---|
| 2026-08-19 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-07-29 | Equal lows taken out structure | -0.64% over 21 days · t = -4.75 · n = 55,661 statistically distinguishable from its control group |
| 2026-07-06 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-06-04 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-06-02 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-04-28 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-08-12 | Zhang Shuo Director | Open-market sale | 1.5K | 51.47 | 77.3K |
| 2026-07-01 | Raza Adnan EVP, Finance and CFO | Shares withheld for tax | 6.0K | 66.88 | 401.9K |
| 2026-07-01 | Strojwas Andrzej Chief Technology Officer | Shares withheld for tax | 1.4K | 66.88 | 90.7K |
| 2026-07-01 | CHAN CHI-FOON Director | Grant or award | 2.7K | — | — |
| 2026-07-01 | Li Ye Jane Director | Grant or award | 2.7K | — | — |
| 2026-07-01 | GUSTAFSON MICHAEL B Director | Grant or award | 2.7K | — | — |
| 2026-07-01 | Zhang Shuo Director | Grant or award | 2.7K | — | — |
| 2026-07-01 | Raza Adnan EVP, Finance and CFO | Grant or award | 23.4K | — | — |
| 2026-07-01 | Erba Nancy Director | Grant or award | 2.7K | — | — |
| 2026-07-01 | BRONSON JOSEPH R Director | Grant or award | 2.7K | — | — |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| BlackRock, Inc. | 159.2M | 4.9M |
| NEEDHAM INVESTMENT MANAGEMENT LLC | 66.2M | 2.0M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 45.8M | 1.4M |
| VANGUARD CAPITAL MANAGEMENT LLC | 45.4M | 1.4M |
| Ranger Investment Management, L.P. | 41.9M | 1.3M |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 41.1M | 1.3M |
| STATE STREET CORP | 39.0M | 1.2M |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC | 37.3M | 1.1M |
| Ophir Asset Management Pty Ltd | 37.2M | 1.1M |
| SNYDER CAPITAL MANAGEMENT L P | 34.7M | 1.1M |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Latest SEC filings
| form | filed | period | |
|---|---|---|---|
| 4 | 2026-08-12 | 2026-08-12 | on EDGAR ↗ |
| 144 | 2026-08-12 | — | on EDGAR ↗ |
| S-8 | 2026-08-06 | — | on EDGAR ↗ |
| 10-Q | 2026-08-06 | 2026-06-30 | on EDGAR ↗ |
| 8-K | 2026-08-06 | 2026-08-06 | on EDGAR ↗ |
| 4 | 2026-07-02 | 2026-07-01 | on EDGAR ↗ |
| 4 | 2026-07-02 | 2026-07-01 | on EDGAR ↗ |
| 4 | 2026-07-02 | 2026-07-01 | on EDGAR ↗ |
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Ask the AI about PDFS
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