PDF Solutions (PDFS)
Connects, analyzes, and inspects semiconductor manufacturing data to improve yield and process control.
$48.44
After hours−0.03 (−0.06%)
At close$48.47(+3.77%)
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13F · 13D/G · Form 4
| Institutions | ≈ 91.17% | 38.50M shares | |
|---|---|---|---|
| 292 holders · as of Jun 30, 2026 · largest filers plus last quarter's tail | |||
| Insiders | 6.87% | 2.90M shares | |
| 9 holders · as of Sep 1, 2026 | |||
| Strategic holders | 8.52% | 3.60M shares | |
| 2 holders · as of May 14, 2026 | |||
| Adds to | 106.56% | ||
42.23M company shares as of Sep 22, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing
This quarter's institutional total failed a plausibility check; shown: the largest filers plus last quarter's remainder.
These groups come from separate filings that can overlap, so they add to 106.56%; nothing is left for Other.
13F, as of Jun 30, 2026
292 holders · 38.50M shares · 101 new positions · 192 increased · 65 reduced · 23 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 5.55M | 13.14% | +684.2K | Aug 7, 2026 |
| Needham Investment Management LLC | 2.07M | 4.89% | +42.3K | Aug 14, 2026 |
| Vanguard Capital Management LLC | 1.66M | 3.94% | +276.1K | Aug 13, 2026 |
| Vanguard Portfolio Management LLC | 1.46M | 3.45% | +57.0K | Aug 13, 2026 |
| State Street Corp | 1.39M | 3.28% | +194.1K | Aug 7, 2026 |
| Wasatch Advisors LP | 1.38M | 3.27% | +873.0K | Jul 10, 2026 |
| Barrow Hanley Mewhinney & Strauss LLC | 1.32M | 3.13% | +179.1K | Aug 12, 2026 |
| Ranger Investment Management, L.P. | 1.15M | 2.72% | −130.0K | Aug 13, 2026 |
13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Kibarian John Kachig | 6.50% | 2.56M | 13G | Feb 17, 2026 |
| John Kachig Kibarian | 6.50% | 2.51M | 13G | Feb 12, 2025 |
| Needham Investment Management L.L.C. | 5.10% | 2.02M | 13G | May 14, 2026 |
Form 4
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 31, 2026 | Andrzej Strojwasofficer: Chief Technology Officer | Sale | 3,394 | $44.41 | 90,965 |
| Aug 12, 2026 | Shuo Zhangdirector | Sale | 1,501 | $51.47 | 23,380 |
House and Senate disclosures
Not reported.