FORMFACTOR INC FORM
COM · Common Stock · CUSIP 346375108 · ISIN US3463751087
Company in Livermore, United States
- SectorTechnology
- IndustrySemiconductors & Related Devices
- HeadquartersLivermore, CA
- Founded1993
- Websiteformfactor.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($766.4k this quarter). Holder counts are more reliable. Shares outstanding: 77.1m as of 2025-07-30, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $34.42. Options: 12 managers hold calls ($10.1m notional), 5 hold puts ($2.6m).
Trends to Q2 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 239 |
| Q4 2022 | 209 |
| Q1 2023 | 224 |
| Q2 2023 | 233 |
| Q3 2023 | 232 |
| Q4 2023 | 246 |
| Q1 2024 | 265 |
| Q2 2024 | 311 |
| Q3 2024 | 321 |
| Q4 2024 | 299 |
| Q1 2025 | 278 |
| Q2 2025 | 302 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2023 | 104 | 114 |
| Q4 2023 | 102 | 129 |
| Q1 2024 | 139 | 115 |
| Q2 2024 | 154 | 137 |
| Q3 2024 | 177 | 148 |
| Q4 2024 | 148 | 162 |
| Q1 2025 | 141 | 151 |
| Q2 2025 | 163 | 130 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2024 | $5.9m | $671.6k | 0.11 |
| Q4 2024 | $25.3m | $3.5m | 0.14 |
| Q1 2025 | $11.0m | $4.2m | 0.38 |
| Q2 2025 | $10.1m | $2.6m | 0.25 |
Biggest buyers
| Bank of New York Mellon Corp | Added | +1.3m |
| ROYAL BANK OF CANADA | Added | +1.2m |
| VOYA INVESTMENT MANAGEMENT LLC | Added | +784.2k |
| REINHART PARTNERS, LLC. | Added | +749.1k |
| HAWK RIDGE CAPITAL MANAGEMENT LP | New | +467.0k |
| First Eagle Investment Management, LLC | New | +281.4k |
| Select Equity Group, L.P. | Added | +271.8k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Added | +253.5k |
| BNP PARIBAS FINANCIAL MARKETS | Added | +231.2k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Added | +205.2k |
Biggest sellers
| Channing Capital Management, LLC | Sold out | -1.1m |
| WESTFIELD CAPITAL MANAGEMENT CO LP | Sold out | -913.3k |
| ALLIANCEBERNSTEIN L.P. | Reduced | -773.5k |
| Invesco Ltd. | Reduced | -550.1k |
| PRIMECAP MANAGEMENT CO/CA/ | Reduced | -462.9k |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | -456.9k |
| BlackRock, Inc. | Reduced | -339.2k |
| NEUMEIER POMA INVESTMENT COUNSEL LLC | Sold out | -305.4k |
| NEW YORK STATE COMMON RETIREMENT FUND | Reduced | -255.9k |
| COMERICA BANK | Reduced | -251.8k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $3.5m100.9k shares |
| CITADEL ADVISORS LLC | Reduced | $2.6m74.5k shares |
| Caption Management, LLC | Unchanged | $860.2k25.0k shares |
| JANE STREET GROUP, LLC | Reduced | $681.3k19.8k shares |
| SIMPLEX TRADING, LLC | Reduced | $554.0k16.1k shares |
| GROUP ONE TRADING LLC | Reduced | $457.7k13.3k shares |
| IMC-Chicago, LLC | Reduced | $454.2k13.2k shares |
| PEAK6 LLC | Added | $351.0k10.2k shares |
| WOLVERINE TRADING, LLC | Reduced | $335.1k9.6k shares |
| Belvedere Trading LLC | Unchanged | $323.5k9.4k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $1.5m43.7k shares |
| CITADEL ADVISORS LLC | Reduced | $929.1k27.0k shares |
| SIMPLEX TRADING, LLC | Added | $96.0k2.8k shares |
| GROUP ONE TRADING LLC | Reduced | $41.3k1.2k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution filed 2026-07-28 | 12.4% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 7.6% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.2% |
Fell to 5% or below in the last year: EARNEST PARTNERS LLC (4.8%, 2026-08-14), VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC)
Insider purchases and sales in Q2 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2023 | 0 | — | 0 | — | — |
| Q4 2023 | 0 | — | 3 | $2.0m | — |
| Q1 2024 | 0 | — | 2 | $1.0m | $173.5k |
| Q2 2024 | 0 | — | 8 | $8.3m | $576.3k |
| Q3 2024 | 0 | — | 2 | $908.9k | $625.0k |
| Q4 2024 | 0 | — | 2 | $619.9k | $498.7k |
| Q1 2025 | 0 | — | 2 | $586.0k | $465.9k |
| Q2 2025 | 0 | — | 2 | $452.9k | $359.2k |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-06-02 | SLESSOR MIKE CEO, director | Sold plan | $119.3k4.0k shares |
| 2025-05-29 | St Dennis Thomas Director | Sold | $93.7k3.0k shares |
| 2025-05-01 | SLESSOR MIKE CEO, director | Sold plan | $126.9k4.0k shares |
| 2025-04-01 | SLESSOR MIKE CEO, director | Sold plan | $113.0k4.0k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2025
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.01% of their portfolio | 11.4m $391.1m | Reduced -339.2k |
| VANGUARD GROUP INC 0.01% of their portfolio | 10.3m $354.1m | Reduced -127.2k |
| EARNEST PARTNERS LLC 0.94% of their portfolio | 6.1m $209.5m | Added +34.1k |
| STATE STREET CORP 0.00% of their portfolio | 2.9m $100.2m | Added +4.5k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 2.8m $96.6m | Added +108.5k |
| ALLIANCEBERNSTEIN L.P. 0.03% of their portfolio | 2.3m $80.0m | Reduced -773.5k |
| PRIMECAP MANAGEMENT CO/CA/ 0.06% of their portfolio | 2.3m $79.9m | Reduced -462.9k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.02% of their portfolio | 2.2m $76.3m | Added +253.5k |
| DIMENSIONAL FUND ADVISORS LP 0.02% of their portfolio | 2.2m $75.0m | Reduced -47.1k |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 2.2m $74.1m | Reduced -793 |
| Bank of New York Mellon Corp 0.01% of their portfolio | 2.1m $72.1m | Added +1.3m |
| REINHART PARTNERS, LLC. 2.24% of their portfolio | 1.9m $65.5m | Added +749.1k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 1.8m $61.2m | Added +1.2m |
| ROYCE & ASSOCIATES LP 0.58% of their portfolio | 1.6m $56.5m | Reduced -226.9k |
| SEI INVESTMENTS CO 0.06% of their portfolio | 1.6m $54.5m | Added +26.7k |
| AMERIPRISE FINANCIAL INC 0.01% of their portfolio | 1.1m $38.8m | Added +104.5k |
| MORGAN STANLEY 0.00% of their portfolio | 1.1m $36.8m | Added +174.9k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 951.4k $32.7m | Added +46.6k |
| SILVERCREST ASSET MANAGEMENT GROUP LLC 0.21% of their portfolio | 908.4k $31.3m | Reduced -63.9k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 877.0k $30.2m | Added +16.4k |
| VOYA INVESTMENT MANAGEMENT LLC 0.03% of their portfolio | 867.6k $29.9m | Added +784.2k |
| NEEDHAM INVESTMENT MANAGEMENT LLC 1.80% of their portfolio | 655.0k $22.5m | Reduced -10.0k |
| Select Equity Group, L.P. 0.09% of their portfolio | 617.5k $21.2m | Added +271.8k |
| EMERALD ADVISERS, LLC 0.60% of their portfolio | 474.0k $16.3m | Reduced -96.5k |
| HAWK RIDGE CAPITAL MANAGEMENT LP 0.67% of their portfolio | 467.0k $16.1m | New |
| Allspring Global Investments Holdings, LLC 0.03% of their portfolio | 459.3k $16.0m | Added +176.0k |
| BESSEMER GROUP INC 0.02% of their portfolio | 431.3k $14.8m | Added +86.3k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 424.2k $14.6m | Added +16.7k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 406.9k $14.0m | Reduced -83.5k |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 400.2k $13.8m | Reduced -74.3k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 382.4k $13.2m | Reduced -4.3k |
| BNP PARIBAS FINANCIAL MARKETS 0.01% of their portfolio | 365.2k $12.6m | Added +231.2k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.04% of their portfolio | 341.5k $11.8m | Added +205.2k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 338.2k $11.6m | Reduced -173.1k |
| NATIXIS ADVISORS, LLC 0.02% of their portfolio | 306.9k $10.6m | Added +100.9k |
| Invesco Ltd. 0.00% of their portfolio | 298.9k $10.3m | Reduced -550.1k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 283.9k $9.8m | Reduced -5.6k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 282.6k $9.7m | Added +108.6k |
| First Eagle Investment Management, LLC 0.02% of their portfolio | 281.4k $9.7m | New |
| Cubist Systematic Strategies, LLC 0.10% of their portfolio | 275.0k $9.5m | Added +93.8k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 273.4k $9.4m | Reduced -32.4k |
| EMERALD MUTUAL FUND ADVISERS TRUST 0.57% of their portfolio | 272.8k $9.4m | Reduced -101.8k |
| PINNACLE ASSOCIATES LTD 0.13% of their portfolio | 267.5k $9.2m | Reduced -107.3k |
| Public Sector Pension Investment Board 0.04% of their portfolio | 262.8k $9.0m | Added +17.1k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 256.5k $8.8m | Added +82.8k |
| PARADIGM CAPITAL MANAGEMENT INC/NY 0.43% of their portfolio | 255.5k $8.8m | Reduced -40.0k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 222.8k $7.7m | Added +2.6k |
| Legal & General Group Plc 0.00% of their portfolio | 215.0k $7.4m | Added +3.9k |
| PEREGRINE CAPITAL MANAGEMENT LLC 0.22% of their portfolio | 213.2k $7.3m | Added +3.5k |
| UBS Group AG 0.00% of their portfolio | 199.6k $6.9m | Added +2.9k |
| AQR CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 194.5k $6.7m | Added +155.2k |
| Qube Research & Technologies Ltd 0.01% of their portfolio | 189.1k $6.5m | Added +4.7k |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 173.4k $6.0m | Reduced -35.8k |
| Nuveen, LLC 0.00% of their portfolio | 172.5k $5.9m | Reduced -30.0k |
| HARBOR CAPITAL ADVISORS, INC. 0.23% of their portfolio | 162.5k $5.6m | Added +57.5k |
| BARCLAYS PLC 0.00% of their portfolio | 152.8k $5.3m | Added +44.2k |
| Fisher Asset Management, LLC 0.00% of their portfolio | 151.2k $5.2m | Reduced -9.1k |
| Madison Asset Management, LLC 0.06% of their portfolio | 149.5k $5.1m | Added +503 |
| Swiss National Bank 0.00% of their portfolio | 147.2k $5.1m | Reduced -2.9k |
| RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio | 143.0k $4.9m | New |
| Edgestream Partners, L.P. 0.13% of their portfolio | 137.0k $4.7m | New |
| Connor, Clark & Lunn Investment Management Ltd. 0.02% of their portfolio | 135.0k $4.6m | Reduced -22.7k |
| Mirador Capital Partners LP 0.71% of their portfolio | 127.6k $4.4m | Added +7.3k |
| Montanaro Asset Management Ltd 1.11% of their portfolio | 125.0k $4.3m | Added +10.5k |
| 4D Advisors, LLC 2.31% of their portfolio | 125.0k $4.3m | New |
| HERALD INVESTMENT MANAGEMENT Ltd 0.60% of their portfolio | 118.3k $4.1m | Unchanged |
| Assenagon Asset Management S.A. 0.01% of their portfolio | 115.7k $4.0m | Reduced -50.6k |
| SORA INVESTORS LLC 0.35% of their portfolio | 112.2k $3.9m | Reduced -81.7k |
| Coppell Advisory Solutions LLC 0.28% of their portfolio | 111.6k $3.9m | New |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 110.4k $3.8m | Added +76.6k |
| LAZARD ASSET MANAGEMENT LLC 0.01% of their portfolio | 109.6k $3.8m | Added +20.8k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio | 101.5k $3.5m | Added +14.8k |
| California Public Employees Retirement System 0.00% of their portfolio | 99.6k $3.4m | Added +5.7k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.01% of their portfolio | 96.3k $3.3m | Reduced -24.5k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 90.8k $3.1m | Reduced -456.9k |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 86.9k $3.0m | Added +507 |
| NORGES BANK 0.00% of their portfolio | 83.5k $2.9m | Reduced -73.7k |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 0.08% of their portfolio | 81.9k $2.8m | Reduced -17.0k |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 80.7k $2.8m | Added +4.6k |
| Susquehanna Portfolio Strategies, LLC 0.06% of their portfolio | 77.6k $2.7m | Added +63.7k |
| Verition Fund Management LLC 0.01% of their portfolio | 74.3k $2.6m | Added +33.4k |
| CITIGROUP INC 0.00% of their portfolio | 72.6k $2.5m | Reduced -40.2k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 71.6k $2.5m | Added +521 |
| PDT Partners, LLC 0.14% of their portfolio | 71.2k $2.4m | Added +43.2k |
| Squarepoint Ops LLC 0.01% of their portfolio | 70.7k $2.4m | Reduced -36.3k |
| TWINBEECH CAPITAL LP 0.05% of their portfolio | 69.2k $2.4m | Reduced -84.9k |
| State of New Jersey Common Pension Fund D 0.01% of their portfolio | 61.2k $2.1m | Added +5.3k |
| MACQUARIE GROUP LTD 0.00% of their portfolio | 59.8k $2.1m | Reduced -728 |
| OPPENHEIMER ASSET MANAGEMENT INC. 0.02% of their portfolio | 59.4k $2.0m | Added +4.3k |
| Thrivent Financial for Lutherans 0.00% of their portfolio | 56.7k $1.9m | Reduced -213 |
| Pathstone Holdings, LLC 0.01% of their portfolio | 56.0k $1.9m | Reduced -11.7k |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 55.7k $1.9m | Reduced -81.9k |
| CAPITAL FUND MANAGEMENT S.A. 0.02% of their portfolio | 54.5k $1.9m | Reduced -9.0k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 54.3k $1.9m | New |
| Campbell & CO Investment Adviser LLC 0.11% of their portfolio | 52.0k $1.8m | New |
| Sapience Investments, LLC 1.08% of their portfolio | 47.1k $1.6m | New |
| State of Alaska, Department of Revenue 0.02% of their portfolio | 45.9k $1.6m | Added +2.9k |
| MetLife Investment Management, LLC 0.01% of their portfolio | 45.8k $1.6m | Unchanged |
| MIRABELLA FINANCIAL SERVICES LLP 0.16% of their portfolio | 44.3k $1.5m | New |
| Knights of Columbus Asset Advisors LLC 0.09% of their portfolio | 44.1k $1.5m | Reduced -486 |