PDFS
PDF Solutions, Inc. · Technology · Software - Application
Momentum inputs (comparable managers):
holder breadth +10.0% ·
share flow +10.1% ·
net new positions +9.1%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 91 | +23 | 19.98M | $1.41B | +25 | −3 |
| Q1 2026 | 72 | 0 | 15.57M | $509.11M | +5 | −5 |
| Q4 2025 | 72 | -1 | 16.81M | $479.65M | — | −1 |
| Q3 2025 | 16 | -1 | 11.09M | $286.43M | +1 | −2 |
| Q2 2025 | 14 | 0 | 10.71M | $229.05M | — | — |
| Q1 2025 | 11 | +1 | 2.47M | $47.13M | +2 | −1 |
| Q4 2024 | 10 | +1 | 2.24M | $60.66M | +1 | — |
| Q3 2024 | 8 | 0 | 977.78K | $30.98M | +1 | −1 |
| Q2 2024 | 8 | — | 999.80K | $36.38M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | State Street Global Advisors ✦ (passive) | 1.15M | -4.4% | $21.96M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 740.06K | +0.6% | $14.15M | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 3 | D. E. Shaw & Co. ✦ | 178.71K | +129.3% | $3.42M | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 4 | Marshall Wace ✦ | 89.31K | New | $1.71M | 0.0% | New | 1 | SEC ↗ ×2 |
| 5 | Millennium Management ✦ | 73.92K | +350.3% | $1.41M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 6 | Citadel Advisors ✦ | 53.42K | +156.7% | $1.02M | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 7 | Renaissance Technologies ✦ | 52.80K | -36.5% | $1.01M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 8 | Fisher Asset Management ✦ | 47.31K | -0.2% | $904,074 | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 9 | Arrowstreet Capital ✦ | 40.05K | New | $765,298 | 0.0% | New | 1 | SEC ↗ |
| 10 | AQR Capital Management ✦ | 27.74K | -12.7% | $530,111 | 0.0% | ▼ Trim | 4 | SEC ↗ ×5 |
| 11 | T. Rowe Price ✦ | 13.71K | +14.0% | $262,000 | 0.0% | ▲ Add | 4 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Marshall Wace | $1.71M | 0.0% |
| Arrowstreet Capital | $765,298 | 0.0% |
Exited
| Two Sigma Investments | $331,838 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 207 holders, 32.20M shares, $1.04B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer · 3.39K sh · $150,728
Director · 1.50K sh · $77,256
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology