Who owns FormFactor (FORM)?
121 holders named in SEC filings declare between 73.2% and 89.1% of FormFactor's shares outstanding, as of Sep 16, 2026. The largest are BlackRock (13.4%), Vanguard (12.0%) and EARNEST PARTNERS LLC (4.8%); the five largest hold 36.2% together. Another 385 institutions hold small positions worth 3.6%. At least 7.3% of the shares appear in no ownership filing: investors who do not have to report, mostly individuals. From Mar 31, 2026 to Jun 30, 2026, institutions that filed both quarters bought 12.9% and sold 17.7% of the shares, a net sale of 4.8%; 147 opened a position, 137 added, 166 reduced and 39 sold out. Biggest buyers: GF FUND MANAGEMENT CO. LTD. (+764,000 shares) and TREMBLANT CAPITAL GROUP (+713,450 shares). Biggest sellers: BlackRock (-1.8M) and EARNEST PARTNERS LLC (-1.1M). Schedule 13D/G filings since Mar 31, 2026: BlackRock, Inc. crossed 5% (12.4%) on Jun 30, 2026 and EARNEST PARTNERS LLC fell below 5% (4.8% still declared) on Jun 30, 2026. Directors and officers, from their latest Form 4: Mike Slessor (0.60%). Over time, 496 managers declared FormFactor in their 13F for Q2 2026, against 195 for Q4 2019: together at most 92.2% of the shares outstanding, against 91.8%.
| Holder | Filing | Share of capital | As of | Holding since (13F) |
|---|---|---|---|---|
| BlackRock | 13F | 13.4% | Jun 30, 2026 | Q4 2019 or earlier |
| Vanguard | 13F | 12.0% | Jun 30, 2026 | Q4 2019 or earlier |
| EARNEST PARTNERS LLC | 13F | 4.8% | Jun 30, 2026 | Q4 2019 or earlier |
| State Street | 13F | 3.3% | Jun 30, 2026 | Q4 2019 or earlier |
| Polar Capital Holdings Plc | 13F | 2.7% | Jun 30, 2026 | Q1 2026 |
| Geode Capital | 13F | 2.3% | Jun 30, 2026 | Q4 2019 or earlier |
| Bank of America | 13F | 2.3% | Jun 30, 2026 | Q4 2019 or earlier |
| PRIMECAP MANAGEMENT CO/CA/ | 13F | 2.2% | Jun 30, 2026 | Q4 2019 or earlier |
| Invesco | 13F | 2.0% | Jun 30, 2026 | Q4 2019 or earlier |
| ALLIANCEBERNSTEIN L.P. | 13F | 1.9% | Jun 30, 2026 | Q4 2019 or earlier |
| Dimensional | 13F | 1.8% | Jun 30, 2026 | Q4 2019 or earlier |
| SEI INVESTMENTS CO | 13F | 1.7% | Jun 30, 2026 | Q4 2019 or earlier |
| T. Rowe Price | 13F | 1.7% | Jun 30, 2026 | Q4 2019 or earlier |
| Jane Street | 13F | 1.7% | Jun 30, 2026 | Q1 2023 |
| Fuller & Thaler Asset Management, Inc. | 13F | 1.5% | Jun 30, 2026 | Q4 2025 |
| Norges Bank | 13F | 1.3% | Jun 30, 2026 | Q4 2019 or earlier |
| Morgan Stanley | 13F | 1.2% | Jun 30, 2026 | Q4 2019 or earlier |
| GF FUND MANAGEMENT CO. LTD. | 13F | 0.99% | Jun 30, 2026 | Q1 2026 |
| Charles Schwab | 13F | 0.96% | Jun 30, 2026 | Q4 2019 or earlier |
| TREMBLANT CAPITAL GROUP | 13F | 0.91% | Jun 30, 2026 | Q2 2026 |
| Millennium | 13F | 0.86% | Jun 30, 2026 | Q1 2025 |
| Goldman Sachs | 13F | 0.85% | Jun 30, 2026 | Q4 2019 or earlier |
| PICTET ASSET MANAGEMENT SA | 13F | 0.84% | Jun 30, 2026 | Q3 2023 |
| BNY | 13F | 0.83% | Jun 30, 2026 | Q4 2019 or earlier |
| Nuveen | 13F | 0.83% | Jun 30, 2026 | Q4 2019 or earlier |
FormFactor institutional ownership over time
| Quarter | 13F managers | Share of the company (upper bound) | Value declared | Held by stock pickers |
|---|---|---|---|---|
| Q4 2019 | 195 | 91.8% | $1.8B | 58.3% |
| Q4 2020 | 231 | 90.8% | $3.0B | 54.3% |
| Q4 2021 | 225 | 92.7% | $3.3B | 56.1% |
| Q4 2022 | 205 | 95.9% | $1.6B | 54.3% |
| Q4 2023 | 244 | 98.4% | $3.2B | 55.3% |
| Q4 2024 | 296 | 98.2% | $3.3B | 50.6% |
| Q4 2025 | 324 | 98.0% | $4.2B | 49.9% |
| Q2 2026 | 496 | 92.2% | $11.5B | 49.5% |
From SEC Form 13F, every quarter since the end of 2019, read like the current quarter: entities of a house summed, a value contradicting its share count set aside. The share of the company is an upper bound — two managers can declare the same shares — over the shares outstanding at that date.