FORMFACTOR INC (FORM) Stock Institutional Trading Activity


FORMFACTOR INC (FORM) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q3 2025), investors with some of the largest reported share count changes include First Eagle U.S. Value, Renaissance Technologies LLC, and Ariel Appreciation Fund. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2020Renaissance Technologies LLCBuy348,3001,203,969$24,188
Q4 2019Renaissance Technologies LLCBuy525,584855,669$22,222
Q3 2019Renaissance Technologies LLCBuy107,917330,085$6,154
Q2 2019Renaissance Technologies LLCBuy83,800222,168$3,481
Q1 2019Renaissance Technologies LLCBuy70,600138,368$2,226
Q4 2018Renaissance Technologies LLCBuy21,37267,768$955
Q3 2018Renaissance Technologies LLCSell-633,55846,396$638
Q1 2018Renaissance Technologies LLCSell-464,468679,954$9,281
Q4 2017Renaissance Technologies LLCSell-405,4001,144,422$17,910
Q3 2017Renaissance Technologies LLCSell-121,5001,549,822$26,115
Q2 2017Renaissance Technologies LLCBuy78,8681,671,322$20,724
Q1 2017Renaissance Technologies LLCSell-442,0001,592,454$18,871
Q4 2016Renaissance Technologies LLCSell-451,0682,034,454$22,786
Q3 2016Renaissance Technologies LLCBuy95,9002,485,522$26,968
Q2 2016Renaissance Technologies LLCBuy684,8222,389,622$21,483
Q1 2016Renaissance Technologies LLCBuy159,4111,704,800$12,394
Q4 2015Renaissance Technologies LLCBuy103,4891,545,389$13,909
Q3 2015Renaissance Technologies LLCBuy177,3001,441,900$9,776
Q2 2015Renaissance Technologies LLCBuy102,4001,264,600$11,634
Q1 2015Renaissance Technologies LLCBuy123,2001,162,200$10,309
Q4 2014Renaissance Technologies LLCBuy202,7001,039,000$8,935
Q3 2014Renaissance Technologies LLCBuy204,600836,300$5,996
Q2 2014Ariel Appreciation FundSell-240,200164,475$1,368
Q2 2014Renaissance Technologies LLCSell-107,717631,700$5,256
Q1 2014Ariel Appreciation FundBuy94,000404,675$2,586
Q1 2014Renaissance Technologies LLCBuy64,802739,417$4,725
Q4 2013Ariel Appreciation FundBuy310,675310,675$1,867
Q4 2013Renaissance Technologies LLCSell-70,685674,615$4,054
Q3 2013Renaissance Technologies LLCSell-226,300745,300$5,113
Q2 2013Renaissance Technologies LLCBuy971,600971,600$6,558

Frequently asked questions about FORM activity

  • Which institutional owners are buying FORM?

    Institutional owners buying FORM include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in FORM activity?

    "Buy" means an investor increased their reported position in FORM compared to the prior reporting period. This reflects growing exposure to FORMFACTOR INC (FORM) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in FORM increasing?

    Institutional interest in FORM can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.