FORM
FormFactor, Inc. · Technology · Semiconductors
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 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 | PRIMECAP Management ✦ | 2.88M | — | $174.12M | 0.1% | n/c | 1 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 1.99M | — | $120.67M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 1.99M | — | $120.67M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | Wellington Management ✦ | 1.49M | — | $90.18M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | Wellington Management ✦ | 1.49M | — | $90.18M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | Wellington Management ✦ | 1.49M | — | $90.18M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | T. Rowe Price ✦ | 630.12K | — | $38.14M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | T. Rowe Price ✦ | 630.12K | — | $38.14M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | Norges Bank ✦ (passive) | 411.75K | — | $24.92M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | Renaissance Technologies ✦ | 230.27K | — | $13.94M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | Arrowstreet Capital ✦ | 171.06K | — | $10.35M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | Millennium Management ✦ | 142.41K | — | $8.62M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | Two Sigma Investments ✦ | 86.74K | — | $5.25M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | Fisher Asset Management ✦ | 72.95K | — | $4.42M | 0.0% | n/c | 1 | SEC ↗ |
| 15 | D. E. Shaw & Co. ✦ | 44.71K | — | $2.71M | 0.0% | n/c | 1 | SEC ↗ |
| 16 | AQR Capital Management ✦ | 44.54K | — | $2.70M | 0.0% | n/c | 1 | SEC ↗ |
| 17 | AQR Capital Management ✦ | 44.54K | — | $2.70M | 0.0% | n/c | 1 | SEC ↗ |
| 18 | AQR Capital Management ✦ | 44.54K | — | $2.70M | 0.0% | n/c | 1 | SEC ↗ |
| 19 | Point72 Asset Management ✦ | 18.42K | — | $1.12M | 0.0% | n/c | 1 | SEC ↗ |
| 20 | Marshall Wace ✦ | 10.78K | — | $652,454 | 0.0% | n/c | 1 | SEC ↗ |
| 21 | Marshall Wace ✦ | 10.78K | — | $652,454 | 0.0% | n/c | 1 | SEC ↗ |
| 22 | Gotham Asset Management ✦ | 5.18K | — | $313,727 | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| No tracked exits this quarter. |
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