FORM
FormFactor, Inc. · Technology · Semiconductors
Momentum inputs (comparable managers):
holder breadth -12.5% ·
share flow -2.6% ·
net new positions -14.3%
— formula
Broad distribution — falling shares and fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 129 | +7 | 49.15M | $7.75B | +15 | −8 |
| Q1 2026 | 125 | +13 | 52.00M | $4.95B | +16 | −4 |
| Q4 2025 | 112 | +3 | 57.86M | $3.23B | +4 | — |
| Q3 2025 | 17 | 0 | 33.04M | $1.20B | +1 | −2 |
| Q2 2025 | 15 | 0 | 30.26M | $1.04B | +2 | −2 |
| Q1 2025 | 12 | -2 | 9.43M | $266.77M | +1 | −3 |
| Q4 2024 | 14 | -2 | 10.58M | $465.48M | +1 | −3 |
| Q3 2024 | 15 | 0 | 7.81M | $359.35M | +1 | −1 |
| Q2 2024 | 15 | — | 8.23M | $498.09M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | State Street Global Advisors ✦ (passive) | 3.05M | — | $134.07M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | PRIMECAP Management ✦ | 2.80M | -1.4% | $123.16M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 2.10M | +1.8% | $92.58M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 4 | Geode Capital Management ✦ (passive) | 2.10M | +1.8% | $92.58M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 5 | Wellington Management ✦ | 1.16M | -2.4% | $50.97M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 6 | Wellington Management ✦ | 1.16M | -2.4% | $50.97M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 7 | Wellington Management ✦ | 1.16M | -2.4% | $50.97M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 8 | T. Rowe Price ✦ | 544.89K | 0.0% | $23.98M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 9 | T. Rowe Price ✦ | 544.89K | 0.0% | $23.98M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 10 | Norges Bank ✦ (passive) | 282.88K | -17.6% | $12.45M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 11 | D. E. Shaw & Co. ✦ | 252.95K | +45.6% | $11.13M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 12 | Fisher Asset Management ✦ | 167.82K | +180.2% | $7.38M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 13 | AQR Capital Management ✦ | 60.71K | -40.7% | $2.67M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 14 | AQR Capital Management ✦ | 60.71K | -40.7% | $2.67M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 15 | AQR Capital Management ✦ | 60.71K | -40.7% | $2.67M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 16 | Two Sigma Investments ✦ | 59.31K | -59.8% | $2.61M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 17 | Citadel Advisors ✦ | 51.51K | +153.2% | $2.27M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 18 | Renaissance Technologies ✦ | 36.57K | -79.6% | $1.61M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 19 | Marshall Wace ✦ | 8.56K | New | $376,860 | 0.0% | New | 1 | SEC ↗ |
| 20 | Marshall Wace ✦ | 8.56K | New | $376,860 | 0.0% | New | 1 | SEC ↗ |
| 21 | Marshall Wace ✦ | 8.56K | New | $376,860 | 0.0% | New | 1 | SEC ↗ |
| 22 | Marshall Wace ✦ | 8.56K | New | $376,860 | 0.0% | New | 1 | SEC ↗ |
| 23 | Gotham Asset Management ✦ | 5.36K | -75.1% | $236,016 | 0.0% | ▼ Trim | 3 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Marshall Wace | $376,860 | 0.0% |
| Marshall Wace | $376,860 | 0.0% |
| Marshall Wace | $376,860 | 0.0% |
| Marshall Wace | $376,860 | 0.0% |
Exited
| Millennium Management | $5.14M | was 0.0% |
| Arrowstreet Capital | $654,672 | was 0.0% |
| Point72 Asset Management | $64,349 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 389 holders, 74.32M shares, $6.80B 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, Director · 2.48K sh · $319,483
Officer, Director · 2.89K sh · $374,659
Officer, Director · 3.28K sh · $428,432
Officer, Director · 1.12K sh · $148,106
Officer, Director · 5.54K sh · $733,388
Officer, Director · 686 sh · $91,464
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology