FormFactor
FORM · NASDAQ
$107.70−$2.46 (−2.23%)TodayMarket closed ·
Prev close $110.16
Who owns FORM
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 42.7% of FORM’s shares.
- BlackRock Institutional Trust Company, N.A.12.0%
- Vanguard Portfolio Management, LLC6.7%
- EARNEST Partners, LLC4.8%
- Vanguard Capital Management, LLC4.5%
- Next 6 largest institutions14.6%
- All other shareholders57.3%
| Holder | Shares | % of shares |
|---|---|---|
| BlackRock Institutional Trust Company, N.A. | 9.38M | 12.04% |
| Vanguard Portfolio Management, LLC | 5.24M | 6.73% |
| EARNEST Partners, LLC | 3.76M | 4.83% |
| Vanguard Capital Management, LLC | 3.52M | 4.51% |
| State Street Investment Management (US) | 2.58M | 3.31% |
| Polar Capital LLP | 2.15M | 2.75% |
| Geode Capital Management, L.L.C. | 1.83M | 2.35% |
| PRIMECAP Management Company | 1.69M | 2.17% |
| Managed Account Advisors LLC | 1.64M | 2.10% |
| Invesco Capital Management LLC | 1.51M | 1.94% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| iShares Core S&P Small-Cap ETF | 4.75M | 6.09% |
| Vanguard Total Stock Market Index Fund | 2.48M | 3.19% |
| Vanguard Small-Cap Index Fund | 1.79M | 2.30% |
| Polar Capital Global Technology Fund | 1.25M | 1.61% |
| Vanguard Information Technology Index Fund | 1.14M | 1.47% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $12.14M (45 trades) of FORM on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| SLESSOR MIKE | Sale | 1.20K | $151.10K |
| SLESSOR MIKE | Sale | 7.70K | $965.65K |
| SLESSOR MIKE | Sale | 2.19K | $272.68K |
| SLESSOR MIKE | Sale | 1.00K | $105.80K |
| SLESSOR MIKE | Sale | 7.77K | $817.10K |
| SLESSOR MIKE | Sale | 8.74K | $910.92K |
| STEVEN-WAISS KELLEY | Sale | 2.10K | $201.81K |
| SLESSOR MIKE | Sale | 686 | $91.46K |
| SLESSOR MIKE | Sale | 5.54K | $733.39K |
| SLESSOR MIKE | Sale | 1.13K | $148.11K |
Short interest
Settled Sep 30, 2026
- Shares short
- 3.27M
- Days to cover
- 2.51
- % of shares outstanding
- 4.19%
- Average daily volume
- 1.30M
- Change since last report
- +1.6%
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