FORMFACTOR INC (FORM)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
Institutions report 72,317,179 shares against 78,120,725 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. A figure this high can overstate: where an adviser and a sub-adviser both report the same shares, both are counted.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $1.7B | 10,484,409 | 0.02% | 8q | -14.4%-$282.0M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $838.4M | 5,242,203 | 0.04% | 2q | -10.8%-$102.0M |
| EARNEST PARTNERS LLC | $601.9M | 3,763,214 | 2.17% | 31q | -22.8%-$177.8M |
| VANGUARD CAPITAL MANAGEMENT LLC | $562.2M | 3,515,254 | 0.01% | 2q | +1.2%+$6.8M |
| STATE STREET CORP | $412.9M | 2,581,477 | 0.01% | 31q | -11.8%-$55.4M |
| Polar Capital Holdings Plc | $343.2M | 2,146,098 | 0.81% | 2q | -6.4%-$23.4M |
| JANE STREET GROUP, LLC | $325.6M incl. $116.1M options CALL+PUT | 1,309,873 | 0.03% | 14q | +41.5%+$95.5M |
| GEODE CAPITAL MANAGEMENT, LLC | $294.5M | 1,833,001 | 0.02% | 31q | -16.2%-$57.0M |
| BANK OF AMERICA CORP /DE/ | $285.3M | 1,783,638 | 0.02% | 31q | -28.1%-$111.5M |
| PRIMECAP MANAGEMENT CO/CA/ | $270.3M | 1,690,114 | 0.16% | 31q | -5.5%-$15.8M |
| Invesco Ltd. | $252.5M | 1,578,533 | 0.02% | 31q | +27.5%+$54.4M |
| DIMENSIONAL FUND ADVISORS LP | $226.8M | 1,418,910 | 0.04% | 31q | HELD |
| SEI INVESTMENTS CO | $214.8M | 1,343,056 | 0.19% | 31q | -20.2%-$54.3M |
| FULLER & THALER ASSET MANAGEMENT, INC. | $189.5M | 1,184,611 | 0.52% | 3q | +4.2%+$7.6M |
| NORGES BANK | $163.8M | 1,024,043 | 0.02% | 32q | +81.6%+$73.6M |
| MORGAN STANLEY | $143.9M | 899,947 | 0.01% | 35q | -31.2%-$65.4M |
| ALLIANCEBERNSTEIN L.P. | $141.3M | 1,457,060 | 0.05% | 31q | -34.7%-$75.1M |
| GF FUND MANAGEMENT CO. LTD. | $124.1M | 776,000 | 1.49% | 2q | +6366.7%+$122.2M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $120.0M | 750,027 | 0.02% | 31q | -20.8%-$31.6M |
| PRICE T ROWE ASSOCIATES INC /MD/ | $115.4M | 721,754 | 0.01% | 31q | -14.1%-$19.0M |
| TREMBLANT CAPITAL GROUP | $114.1M | 713,450 | 3.28% | new | NEW |
| MILLENNIUM MANAGEMENT LLC | $108.9M incl. $1.6M options CALL | 670,867 | 0.04% | 6q | +270.8%+$79.5M |
| GOLDMAN SACHS GROUP INC | $105.8M | 661,399 | 0.01% | 31q | -24.3%-$33.9M |
| Pictet Asset Management Holding SA | $104.3M | 653,999 | 0.10% | 12q | +5215.8%+$102.4M |
| Bank of New York Mellon Corp | $103.8M | 649,307 | 0.02% | 31q | +2.5%+$2.5M |
| Nuveen, LLC | $103.8M | 649,293 | 0.02% | 6q | -23.6%-$32.1M |
| REINHART PARTNERS, LLC. | $102.3M | 639,922 | 2.34% | 15q | -44.8%-$83.1M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $98.3M incl. $36.0M options CALL+PUT | 389,826 | 0.01% | 31q | +770.6%+$87.0M |
| T. Rowe Price Investment Management, Inc. | $94.8M | 592,746 | 0.06% | 4q | -30.5%-$41.6M |
| NORTHERN TRUST CORP | $94.0M | 588,018 | 0.01% | 31q | -29.6%-$39.5M |
| CITADEL ADVISORS LLC | $93.2M incl. $54.7M options CALL+PUT | 240,276 | 0.01% | 30q | +19.6%+$15.3M |
| NEEDHAM INVESTMENT MANAGEMENT LLC | $87.6M | 547,500 | 2.63% | 31q | -9.3%-$9.0M |
| WT Asset Management Ltd | $85.5M | 534,492 | 1.69% | new | NEW |
| Assenagon Asset Management S.A. | $83.0M | 519,036 | 0.05% | 9q | +22.8%+$15.4M |
| VANGUARD FIDUCIARY TRUST CO | $80.6M | 504,235 | 0.02% | 2q | -5.0%-$4.2M |
| HRT FINANCIAL LP | $79.0M incl. $767.0K options OPT | 493,865 | 0.14% | 3q | +378.0%+$62.5M |
| AMERIPRISE FINANCIAL INC | $69.7M | 435,956 | 0.01% | 31q | -69.0%-$154.9M |
| TWO SIGMA INVESTMENTS, LP | $68.1M | 425,688 | 0.05% | 17q | +99.4%+$33.9M |
| D. E. Shaw & Co., Inc. | $67.4M | 421,377 | 0.03% | 17q | +73.7%+$28.6M |
| BESSEMER GROUP INC | $66.2M | 414,090 | 0.09% | 22q | +5.6%+$3.5M |
| PRINCIPAL FINANCIAL GROUP INC | $66.2M | 413,690 | 0.03% | 31q | +9.3%+$5.6M |
| Capital World Investors | $65.7M | 411,030 | 0.01% | new | NEW |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | $65.3M | 408,428 | 0.03% | 3q | +583368.6%+$65.3M |
| NATIXIS ADVISORS, LLC | $63.0M | 393,987 | 0.07% | 26q | -13.6%-$10.0M |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $61.0M | 381,320 | 0.02% | 14q | -48.0%-$56.3M |
| Connor, Clark & Lunn Investment Management Ltd. | $60.5M | 378,075 | 0.11% | 16q | +13.5%+$7.2M |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $60.2M | 376,376 | 0.03% | 3q | -26.0%-$21.2M |
| ROYAL BANK OF CANADA | $53.4M | 334,072 | 0.01% | 31q | -22.1%-$15.2M |
| Fisher Asset Management, LLC | $50.2M | 313,652 | 0.01% | 31q | -26.4%-$18.0M |
| JONES FINANCIAL COMPANIES LLLP | $48.6M | 371,323 | 0.02% | 9q | -13.6%-$7.7M |
| UBS Group AG | $47.4M | 296,102 | 0.01% | 31q | +47.8%+$15.3M |
| RENAISSANCE TECHNOLOGIES LLC | $47.3M | 295,568 | 0.07% | new | NEW |
| Select Equity Group, L.P. | $45.7M | 285,686 | 0.23% | 7q | +11.0%+$4.5M |
| Public Sector Pension Investment Board | $42.8M | 267,868 | 0.11% | 31q | -3.4%-$1.5M |
| Allspring Global Investments Holdings, LLC | $40.4M | 274,250 | 0.06% | 19q | +228.4%+$28.1M |
| TUDOR INVESTMENT CORP ET AL | $40.3M | 251,905 | 0.06% | 3q | +78.3%+$17.7M |
| NEUBERGER BERMAN GROUP LLC | $38.1M | 238,532 | 0.03% | 10q | +2695.1%+$36.8M |
| ROYCE & ASSOCIATES LP | $37.5M | 234,556 | 0.30% | 31q | -48.1%-$34.8M |
| JPMORGAN CHASE & CO | $36.7M incl. $14.4K options CALL | 250,700 | 0.00% | 31q | -5.4%-$2.1M |
| Panview Capital Ltd | $36.6M | 228,647 | 6.44% | new | NEW |
| NOMURA ASSET MANAGEMENT CO LTD | $36.0M | 224,980 | 0.08% | 2q | -6.2%-$2.4M |
| ENVESTNET ASSET MANAGEMENT INC | $35.2M | 220,319 | 0.01% | 31q | -21.6%-$9.7M |
| FRANKLIN RESOURCES INC | $34.7M | 217,063 | 0.01% | 13q | -56.0%-$44.3M |
| AQR CAPITAL MANAGEMENT LLC | $34.3M | 214,217 | 0.01% | 31q | HELD |
| First Eagle Investment Management, LLC | $33.9M | 212,274 | 0.03% | 5q | +18.0%+$5.2M |
| Mawer Investment Management Ltd. | $32.4M | 202,824 | 0.22% | new | NEW |
| MARSHALL WACE, LLP | $30.5M | 191,010 | 0.02% | 3q | +91.5%+$14.6M |
| Legal & General Group Plc | $29.1M | 181,745 | 0.01% | 31q | -1.8%-$534.0K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $28.9M | 180,478 | 0.01% | 31q | +14.4%+$3.6M |
| PINNACLE ASSOCIATES LTD | $28.2M | 176,497 | 0.31% | 31q | -6.9%-$2.1M |
| WELLS FARGO & COMPANY/MN | $27.3M | 170,844 | 0.00% | 31q | -23.9%-$8.6M |
| FIRST TRUST ADVISORS LP | $26.2M | 163,706 | 0.02% | 10q | +63.1%+$10.1M |
| Bridgewater Associates, LP | $26.0M | 162,592 | 0.11% | 3q | +223.8%+$18.0M |
| Russell Investments Group, Ltd. | $25.9M | 162,464 | 0.02% | 14q | +76.1%+$11.2M |
| Swiss National Bank | $25.0M | 156,400 | 0.01% | 31q | +2.0%+$479.8K |
| RHUMBLINE ADVISERS | $24.9M | 155,993 | 0.02% | 31q | -23.9%-$7.8M |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | $24.0M | 150,000 | 0.03% | new | NEW |
| LOS ANGELES CAPITAL MANAGEMENT LLC | $23.6M | 147,480 | 0.09% | 3q | +693.3%+$20.6M |
| DEUTSCHE BANK AG\ | $22.5M | 140,509 | 0.01% | 34q | -12.2%-$3.1M |
| PRUDENTIAL FINANCIAL INC | $22.1M | 138,467 | 0.02% | 31q | -42.0%-$16.0M |
| Point72 Asset Management, L.P. | $21.9M incl. $2.0M options CALL+PUT | 124,472 | 0.02% | 4q | +342.0%+$16.9M |
| IMC-Chicago, LLC | $20.9M incl. $13.7M options CALL+PUT | 45,135 | 0.01% | 2q | HELD |
| OBERWEIS ASSET MANAGEMENT INC/ | $20.4M | 127,330 | 0.42% | new | NEW |
| Man Group plc | $20.1M | 125,828 | 0.03% | 3q | -21.9%-$5.6M |
| FEDERATED HERMES, INC. | $19.9M | 124,709 | 0.03% | 15q | -37.8%-$12.1M |
| Jump Financial, LLC | $19.8M | 123,645 | 0.16% | 2q | +104.0%+$10.1M |
| ACADIAN ASSET MANAGEMENT LLC | $17.9M | 112,186 | 0.02% | 3q | -34.9%-$9.6M |
| BNP PARIBAS FINANCIAL MARKETS | $17.5M | 109,114 | 0.01% | 31q | -9.7%-$1.9M |
| CANADA LIFE ASSURANCE Co | $17.3M | 107,903 | 0.03% | 27q | +23.0%+$3.2M |
| Allianz Asset Management GmbH | $16.8M | 105,081 | 0.01% | new | NEW |
| California Public Employees Retirement System | $16.6M | 103,703 | 0.01% | 2q | -11.3%-$2.1M |
| CITIGROUP INC | $15.5M | 96,984 | 0.01% | 31q | -37.3%-$9.2M |
| PEREGRINE CAPITAL MANAGEMENT LLC | $15.1M | 94,420 | 0.49% | 11q | -28.0%-$5.9M |
| CANADA PENSION PLAN INVESTMENT BOARD | $14.8M | 92,400 | 0.01% | 3q | +323.9%+$11.3M |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $14.5M | 90,452 | 0.01% | 31q | +0.9%+$131.6K |
| Temasek Holdings (Private) Ltd | $14.1M | 88,197 | 0.04% | new | NEW |
| Weiss Asset Management LP | $13.1M | 81,760 | 0.14% | new | NEW |
| Balyasny Asset Management L.P. | $13.0M | 81,279 | 0.02% | 2q | +441.1%+$10.6M |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $12.0M | 74,850 | 0.02% | 4q | +5.3%+$606.9K |
| Grand Alliance Asset Management Ltd | $11.9M | 74,650 | 7.17% | new | NEW |
Showing the largest 100 of 513 reported holders.
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-14 | SLESSOR MIKE | CEO | Sold | 16,002 | $2.1M ×6 |
| 2026-09-16 | SLESSOR MIKE | CEO | Sold | 17,510 | $1.8M ×3 |
| 2026-06-10 | SLESSOR MIKE | CEO | Sold | 11,890 | $1.4M ×7 |
| 2026-10-14 | SLESSOR MIKE | CEO | Sold | 11,098 | $1.4M ×3 |
| 2026-05-13 | SLESSOR MIKE | CEO | Sold | 9,438 | $1.2M ×12 |
| 2026-06-02 | Rhodes Sheri | Director | Sold | 6,328 | $793.5K |
| 2026-05-15 | STEVEN-WAISS KELLEY | Director | Sold | 5,400 | $678.2K |
| 2026-07-15 | SLESSOR MIKE | CEO | Sold | 4,735 | $560.2K ×6 |
| 2026-05-13 | Titinger Jorge | Director | Sold | 4,009 | $516.3K |
| 2026-05-21 | Obregon-Jimenez Rebeca | Director | Sold | 3,828 | $484.1K |
| 2026-06-15 | St Dennis Thomas | Director | Sold | 2,800 | $424.2K |
| 2026-05-20 | WHITE BRIAN C | Director | Sold | 3,250 | $409.5K |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 126 | $312.1M | 2,114,493 | 23 | 46 | 37 | 0.0% |
| Q2 2026 | 513 | $11.7B | 72,317,179 | 155 | 144 | 168 | 2.0% |
| Q1 2026 | 404 | $7.2B | 74,610,259 | 101 | 128 | 116 | 0.7% |
| Q4 2025 | 341 | $4.3B | 77,255,380 | 85 | 96 | 103 | 0.3% |
| Q3 2025 | 279 | $2.8B | 75,263,703 | 41 | 84 | 97 | 0.6% |
| Q2 2025 | 305 | $2.6B | 76,394,568 | 54 | 102 | 98 | 0.5% |
| Q1 2025 | 282 | $2.2B | 75,717,442 | 37 | 101 | 91 | 0.7% |
| Q4 2024 | 305 | $3.4B | 76,033,452 | 35 | 115 | 96 | 0.9% |
| Q3 2024 | 321 | $3.4B | 74,358,372 | 55 | 121 | 99 | 0.2% |
| Q2 2024 | 313 | $4.6B | 75,484,600 | 66 | 86 | 112 | 0.2% |
| Q1 2024 | 267 | $3.6B | 78,129,429 | 46 | 88 | 85 | 0.1% |
| Q4 2023 | 247 | $3.3B | 78,438,078 | 33 | 67 | 96 | 0.0% |
| Q3 2023 | 233 | $2.7B | 76,403,258 | 26 | 70 | 84 | 0.0% |
| Q2 2023 | 233 | $2.5B | 74,218,102 | 36 | 75 | 70 | 0.0% |
| Q1 2023 | 224 | $2.4B | 75,956,628 | 36 | 68 | 83 | 0.0% |
| Q4 2022 | 212 | $1.7B | 74,907,276 | 23 | 73 | 80 | 0.0% |
| Q3 2022 | 229 | $2.0B | 78,004,808 | 44 | 70 | 71 | 0.2% |
| Q2 2022 | 230 | $3.1B | 80,110,469 | 22 | 64 | 92 | 0.0% |
| Q1 2022 | 232 | $3.3B | 79,266,221 | 26 | 73 | 85 | 0.1% |
| Q4 2021 | 230 | $4.3B | 94,178,706 | 25 | 79 | 78 | 0.1% |
| Q3 2021 | 222 | $3.5B | 92,576,398 | 23 | 77 | 74 | 0.2% |
| Q2 2021 | 227 | $3.4B | 93,491,368 | 29 | 75 | 85 | 0.2% |
| Q1 2021 | 243 | $4.2B | 93,434,332 | 31 | 67 | 96 | 0.3% |
| Q4 2020 | 238 | $4.0B | 93,390,879 | 41 | 59 | 90 | 0.5% |
| Q3 2020 | 216 | $2.3B | 93,950,455 | 29 | 75 | 76 | 0.2% |
| Q2 2020 | 224 | $2.8B | 95,396,112 | 46 | 70 | 80 | 0.2% |
| Q1 2020 | 202 | $2.6B | 129,523,244 | 42 | 60 | 67 | 0.1% |
| Q4 2019 | 202 | $2.6B | 98,408,773 | 48 | 72 | 52 | 0.2% |
| Q3 2019 | 175 | $1.8B | 96,799,168 | 21 | 59 | 52 | 0.2% |
| Q2 2019 | 168 | $1.5B | 94,830,745 | 30 | 54 | 47 | 0.3% |
| Q1 2019 | 162 | $1.5B | 94,273,103 | 13 | 56 | 52 | 0.3% |
| Q4 2018 | 166 | $1.4B | 96,098,725 | 4 | 1 | 6 | 0.2% |
