THERMO FISHER SCIENTIFIC INC (TMO) Stock Institutional Trading Activity


THERMO FISHER SCIENTIFIC INC (TMO) 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 Viking Global Investors, Third Point, Lindsell Train, Polen Capital Management, and Cantillon Capital Management. 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 2025Matrix Advisors Value FundSell-3,74415,712$7,818,291
Q1 2025Sequoia Financial AdvisorsBuy5,620100,191$49,855,119
Q1 2025Renaissance Technologies LLCSell-26,100155,244$77,249,414
Q1 2025Lindsell TrainBuy101,550508,790$253,173,904
Q1 2025Cantillon Capital ManagementSell-28,097901,773$448,722,245
Q1 2025Parnassus Endeavor FundBuy9,4741,420,431$706,806,466
Q1 2025Polen Capital ManagementSell-138,7132,322,482$1,155,666,992
Q4 2024Dodge & Cox Stock FundSell-64526,121$13,588,928
Q4 2024AKO CapitalSell-109,689313,784$163,240
Q4 2024Mairs & Power Growth FundSell-491,616$840,692
Q4 2024Matrix Advisors Value FundSell-29719,456$10,121,595
Q4 2024Sequoia Financial AdvisorsBuy5,30394,571$49,198,676
Q4 2024Renaissance Technologies LLCBuy132,393181,344$94,340,589
Q4 2024Third PointSell-1,200,000350,000$182,080,500
Q4 2024Lindsell TrainBuy407,240407,240$211,858,465
Q4 2024Cantillon Capital ManagementBuy130,870929,870$483,746,270
Q4 2024Parnassus Endeavor FundBuy283,0871,410,957$734,022,160
Q4 2024Polen Capital ManagementSell-345,5912,461,195$1,280,387,702
Q3 2024Torray FundBuy403403$249,284
Q3 2024Dodge & Cox Stock FundSell-2526,766$16,556,645
Q3 2024AKO CapitalSell-100,775423,473$261,948
Q3 2024Eagle Capital ManagementSell-180683$422,483
Q3 2024Mairs & Power Growth FundSell-1451,665$1,029,919
Q3 2024Matrix Advisors Value FundSell-43619,753$12,218,613
Q3 2024Renaissance Technologies LLCSell-186,89848,951$30,279,779
Q3 2024Sequoia Financial AdvisorsBuy4,87989,268$55,218,466
Q3 2024Cantillon Capital ManagementSell-23,838799,000$494,237,430
Q3 2024Parnassus Endeavor FundSell-35,8371,127,870$697,666,546
Q3 2024Polen Capital ManagementSell-295,2242,806,786$1,736,193,727
Q2 2024Dodge & Cox Stock FundSell-726,791$14,815,423

Frequently asked questions about TMO activity

  • Which institutional owners are buying TMO?

    Institutional owners buying TMO 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 TMO activity?

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

  • Is institutional interest in TMO increasing?

    Institutional interest in TMO 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.