Security record · archived quarter
FORM
FormFactor, Inc. · Technology · Semiconductors
112Tracked holders
+3Δ holders
57.86MShares held
$3.23BReported value
+4New positions
−0Exits
Momentum inputs (comparable managers):
holder breadth +2.8% ·
share flow +4.1% ·
net new positions +3.6%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2025
Ownership over time
| 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 | — | — |
Who holds it · Q4 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 11.57M | +3.0% | $645.35M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 11.57M | +3.0% | $645.35M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 11.57M | +3.0% | $645.35M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 11.57M | +3.0% | $645.35M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 11.57M | +3.0% | $645.35M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 11.57M | +3.0% | $645.35M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 11.57M | +3.0% | $645.35M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 11.57M | +3.0% | $645.35M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 11.57M | +3.0% | $645.35M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 11.57M | +3.0% | $645.35M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 11.57M | +3.0% | $645.35M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 11.57M | +3.0% | $645.35M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 11.57M | +3.0% | $645.35M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 11.57M | +3.0% | $645.35M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 11.57M | +3.0% | $645.35M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 11.57M | +3.0% | $645.35M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 11.57M | +3.0% | $645.35M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 18 | The Vanguard Group ✦ (passive) | 10.22M | -0.8% | $570.16M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 19 | The Vanguard Group ✦ (passive) | 10.22M | -0.8% | $570.16M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 20 | The Vanguard Group ✦ (passive) | 10.22M | -0.8% | $570.16M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 21 | The Vanguard Group ✦ (passive) | 10.22M | -0.8% | $570.16M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 22 | The Vanguard Group ✦ (passive) | 10.22M | -0.8% | $570.16M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 23 | State Street Global Advisors ✦ (passive) | 2.87M | -1.6% | $160.06M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 24 | Bank Of America Corp /De/ | 2.52M | — | $140.36M | 0.0% | n/c | 1 | SEC ↗ |
| 25 | Bank Of America Corp /De/ | 2.52M | — | $140.36M | 0.0% | n/c | 1 | SEC ↗ |
| 26 | Bank Of America Corp /De/ | 2.52M | — | $140.36M | 0.0% | n/c | 1 | SEC ↗ |
| 27 | Bank Of America Corp /De/ | 2.52M | — | $140.36M | 0.0% | n/c | 1 | SEC ↗ |
| 28 | Bank Of America Corp /De/ | 2.52M | — | $140.36M | 0.0% | n/c | 1 | SEC ↗ |
| 29 | Bank Of America Corp /De/ | 2.52M | — | $140.36M | 0.0% | n/c | 1 | SEC ↗ |
| 30 | Bank Of America Corp /De/ | 2.52M | — | $140.36M | 0.0% | n/c | 1 | SEC ↗ |
| 31 | Morgan Stanley ✦ | 2.27M | +98.5% | $126.71M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 32 | Morgan Stanley ✦ | 2.27M | +98.5% | $126.71M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 33 | Morgan Stanley ✦ | 2.27M | +98.5% | $126.71M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 34 | Morgan Stanley ✦ | 2.27M | +98.5% | $126.71M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 35 | Morgan Stanley ✦ | 2.27M | +98.5% | $126.71M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 36 | Morgan Stanley ✦ | 2.27M | +98.5% | $126.71M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 37 | Morgan Stanley ✦ | 2.27M | +98.5% | $126.71M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 38 | Morgan Stanley ✦ | 2.27M | +98.5% | $126.71M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 39 | Morgan Stanley ✦ | 2.27M | +98.5% | $126.71M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 40 | Morgan Stanley ✦ | 2.27M | +98.5% | $126.71M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 41 | PRIMECAP Management ✦ | 2.08M | -10.5% | $116.09M | 0.1% | ▼ Trim | 7 | SEC ↗ |
| 42 | Geode Capital Management ✦ (passive) | 1.89M | +0.4% | $105.21M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 43 | Geode Capital Management ✦ (passive) | 1.89M | +0.4% | $105.21M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 44 | Dimensional Fund Advisors Lp | 1.72M | — | $96.07M | 0.0% | n/c | 1 | SEC ↗ |
| 45 | Dimensional Fund Advisors Lp | 1.72M | — | $96.07M | 0.0% | n/c | 1 | SEC ↗ |
| 46 | Dimensional Fund Advisors Lp | 1.72M | — | $96.07M | 0.0% | n/c | 1 | SEC ↗ |
| 47 | Dimensional Fund Advisors Lp | 1.72M | — | $96.07M | 0.0% | n/c | 1 | SEC ↗ |
| 48 | Dimensional Fund Advisors Lp | 1.72M | — | $96.07M | 0.0% | n/c | 1 | SEC ↗ |
| 49 | Sei Investments Co | 1.69M | — | $93.99M | 0.1% | n/c | 1 | SEC ↗ |
| 50 | Sei Investments Co | 1.69M | — | $93.99M | 0.1% | n/c | 1 | SEC ↗ |
| 51 | Sei Investments Co | 1.69M | — | $93.99M | 0.1% | n/c | 1 | SEC ↗ |
| 52 | Alliancebernstein L.P. | 1.41M | — | $78.91M | 0.0% | n/c | 1 | SEC ↗ |
| 53 | Massachusetts Financial Services Co… | 1.37M | — | $76.36M | 0.0% | n/c | 1 | SEC ↗ |
| 54 | Massachusetts Financial Services Co… | 1.37M | — | $76.36M | 0.0% | n/c | 1 | SEC ↗ |
| 55 | Ameriprise Financial Inc | 1.32M | — | $73.41M | 0.0% | n/c | 1 | SEC ↗ |
| 56 | Ameriprise Financial Inc | 1.32M | — | $73.41M | 0.0% | n/c | 1 | SEC ↗ |
| 57 | Ameriprise Financial Inc | 1.32M | — | $73.41M | 0.0% | n/c | 1 | SEC ↗ |
| 58 | Ameriprise Financial Inc | 1.32M | — | $73.41M | 0.0% | n/c | 1 | SEC ↗ |
| 59 | Ameriprise Financial Inc | 1.32M | — | $73.41M | 0.0% | n/c | 1 | SEC ↗ |
| 60 | Victory Capital Management Inc | 1.26M | — | $70.09M | 0.0% | n/c | 1 | SEC ↗ |
| 61 | T. Rowe Price ✦ | 964.58K | +47.1% | $53.80M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 62 | T. Rowe Price ✦ | 964.58K | +47.1% | $53.80M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 63 | Charles Schwab Investment… | 951.73K | — | $53.09M | 0.0% | n/c | 1 | SEC ↗ |
| 64 | Goldman Sachs Group ✦ | 884.73K | +72.7% | $49.35M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 65 | Goldman Sachs Group ✦ | 884.73K | +72.7% | $49.35M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 66 | Goldman Sachs Group ✦ | 884.73K | +72.7% | $49.35M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 67 | Northern Trust Corp | 824.39K | — | $45.98M | 0.0% | n/c | 1 | SEC ↗ |
| 68 | Northern Trust Corp | 824.39K | — | $45.98M | 0.0% | n/c | 1 | SEC ↗ |
| 69 | Northern Trust Corp | 824.39K | — | $45.98M | 0.0% | n/c | 1 | SEC ↗ |
| 70 | Northern Trust Corp | 824.39K | — | $45.98M | 0.0% | n/c | 1 | SEC ↗ |
| 71 | Northern Trust Corp | 824.39K | — | $45.98M | 0.0% | n/c | 1 | SEC ↗ |
| 72 | Northern Trust Corp | 824.39K | — | $45.98M | 0.0% | n/c | 1 | SEC ↗ |
| 73 | Northern Trust Corp | 824.39K | — | $45.98M | 0.0% | n/c | 1 | SEC ↗ |
| 74 | Bank of New York Mellon Corp | 751.35K | — | $41.91M | 0.0% | n/c | 1 | SEC ↗ |
| 75 | Bank of New York Mellon Corp | 751.35K | — | $41.91M | 0.0% | n/c | 1 | SEC ↗ |
| 76 | Bank of New York Mellon Corp | 751.35K | — | $41.91M | 0.0% | n/c | 1 | SEC ↗ |
| 77 | Bank of New York Mellon Corp | 751.35K | — | $41.91M | 0.0% | n/c | 1 | SEC ↗ |
| 78 | Bank of New York Mellon Corp | 751.35K | — | $41.91M | 0.0% | n/c | 1 | SEC ↗ |
| 79 | Bank of New York Mellon Corp | 751.35K | — | $41.91M | 0.0% | n/c | 1 | SEC ↗ |
| 80 | Bank of New York Mellon Corp | 751.35K | — | $41.91M | 0.0% | n/c | 1 | SEC ↗ |
| 81 | Bank of New York Mellon Corp | 751.35K | — | $41.91M | 0.0% | n/c | 1 | SEC ↗ |
| 82 | Bank of New York Mellon Corp | 751.35K | — | $41.91M | 0.0% | n/c | 1 | SEC ↗ |
| 83 | Bank of New York Mellon Corp | 751.35K | — | $41.91M | 0.0% | n/c | 1 | SEC ↗ |
| 84 | Bank of New York Mellon Corp | 751.35K | — | $41.91M | 0.0% | n/c | 1 | SEC ↗ |
| 85 | Nuveen, LLC | 705.93K | — | $39.38M | 0.0% | n/c | 1 | SEC ↗ |
| 86 | Nuveen, LLC | 705.93K | — | $39.38M | 0.0% | n/c | 1 | SEC ↗ |
| 87 | Nuveen, LLC | 705.93K | — | $39.38M | 0.0% | n/c | 1 | SEC ↗ |
| 88 | Arrowstreet Capital ✦ | 601.76K | New | $33.57M | 0.0% | New | 1 | SEC ↗ |
| 89 | Royal Bank Of Canada | 586.65K | — | $32.72M | 0.0% | n/c | 1 | SEC ↗ |
| 90 | Royal Bank Of Canada | 586.65K | — | $32.72M | 0.0% | n/c | 1 | SEC ↗ |
| 91 | Royal Bank Of Canada | 586.65K | — | $32.72M | 0.0% | n/c | 1 | SEC ↗ |
| 92 | Royal Bank Of Canada | 586.65K | — | $32.72M | 0.0% | n/c | 1 | SEC ↗ |
| 93 | Royal Bank Of Canada | 586.65K | — | $32.72M | 0.0% | n/c | 1 | SEC ↗ |
| 94 | Royal Bank Of Canada | 586.65K | — | $32.72M | 0.0% | n/c | 1 | SEC ↗ |
| 95 | Royal Bank Of Canada | 586.65K | — | $32.72M | 0.0% | n/c | 1 | SEC ↗ |
| 96 | Royal Bank Of Canada | 586.65K | — | $32.72M | 0.0% | n/c | 1 | SEC ↗ |
| 97 | Norges Bank ✦ (passive) | 563.84K | New | $31.45M | 0.0% | New | 1 | SEC ↗ |
| 98 | Assenagon Asset Management S.A. | 562.77K | — | $31.39M | 0.0% | n/c | 1 | SEC ↗ |
| 99 | Voya Investment Management Llc | 562.69K | — | $31.39M | 0.0% | n/c | 1 | SEC ↗ |
| 100 | Voya Investment Management Llc | 562.69K | — | $31.39M | 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
| Arrowstreet Capital | $33.57M | 0.0% |
| Norges Bank | $31.45M | 0.0% |
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.
Frequently co-owned
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)
Aug 14
SLESSOR MIKE
Officer, Director · 2.48K sh · $319,483
Aug 14
SLESSOR MIKE
Officer, Director · 2.89K sh · $374,659
Aug 14
SLESSOR MIKE
Officer, Director · 3.28K sh · $428,432
Aug 14
SLESSOR MIKE
Officer, Director · 1.12K sh · $148,106
Aug 14
SLESSOR MIKE
Officer, Director · 5.54K sh · $733,388
Aug 14
SLESSOR MIKE
Officer, Director · 686 sh · $91,464
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Aug 14
SC 13G/A — EARNEST PARTNERS LLC
Jul 28
SC 13G/A — BlackRock, Inc.
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q4 2025 ·
Methodology ·
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