COGNEX CORP (CGNX) Stock Institutional Trading Activity


COGNEX CORP (CGNX) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Mairs & Power Growth Fund, Renaissance Technologies LLC, Disciplined Growth Investors, Engaged Capital, and Sequoia Financial Advisors. 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
Q3 2020Renaissance Technologies LLCBuy68,900145,756$9,489
Q3 2020Disciplined Growth InvestorsSell-45,6501,402,427$91,298
Q2 2020FundsmithBuy93,5941,602,593$95,707
Q2 2020Renaissance Technologies LLCBuy11,05676,856$4,590
Q2 2020Disciplined Growth InvestorsSell-639,8381,448,077$86,479
Q1 2020FundsmithBuy341,1821,508,999$63,710
Q1 2020Joho CapitalSell-80,00028,121$1,187
Q1 2020Disciplined Growth InvestorsBuy63,3162,087,915$88,152
Q4 2019ARK InvestSell-22,95246,649$2,614
Q4 2019Disciplined Growth InvestorsBuy513,8052,024,599$113,459
Q3 2019ARK InvestSell-1,97369,601$3,419
Q3 2019Joho CapitalSell-1,157,000108,121$5,312
Q3 2019Disciplined Growth InvestorsBuy283,2411,510,794$74,225
Q2 2019FundsmithBuy134,6501,167,817$56,032
Q2 2019ARK InvestBuy2,62971,574$3,434
Q2 2019Joho CapitalSell-646,6201,265,121$60,701
Q2 2019Disciplined Growth InvestorsBuy189,4841,227,553$58,898
Q1 2019Renaissance Technologies LLCSell-176,55665,800$3,347
Q1 2019Joho CapitalSell-863,9741,911,741$97,231
Q1 2019Disciplined Growth InvestorsBuy223,0301,038,069$52,796
Q4 2018FundsmithBuy1,033,1671,033,167$39,953
Q4 2018ARK InvestBuy8,64968,945$2,666
Q4 2018Renaissance Technologies LLCSell-17,700242,356$9,372
Q4 2018Viking Global InvestorsBuy884,422884,422$34,201
Q4 2018Joho CapitalBuy508,7982,775,715$107,337
Q4 2018Disciplined Growth InvestorsSell-9,563815,039$31,518
Q3 2018ARK InvestBuy17,12660,296$3,366
Q3 2018Renaissance Technologies LLCSell-209,500260,056$14,516
Q3 2018Joho CapitalSell-802,1072,266,917$126,539
Q3 2018Disciplined Growth InvestorsBuy25,390824,602$46,029

Frequently asked questions about CGNX activity

  • Which institutional owners are buying CGNX?

    Institutional owners buying CGNX 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 CGNX activity?

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

  • Is institutional interest in CGNX increasing?

    Institutional interest in CGNX 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.