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
Q3 2020Cantillon Capital ManagementSell-11,867968,981$427,824
Q3 2020Viking Global InvestorsSell-356,9211,377,223$608,071
Q2 2020Eagle Capital ManagementSell-29428,785$10,430
Q2 2020Dodge & Cox Stock FundSell-32035,970$13,033
Q2 2020Sound Shore ManagementSell-128,524188,409$68,268
Q2 2020Mairs & Power Growth FundSell-311,425$516
Q2 2020Sequoia Financial AdvisorsSell-2,6130$996
Q2 2020Olstein Capital ManagementSell-2,5007,000$2,536
Q2 2020Matrix Advisors Value FundSell-8,16324,578$8,906
Q2 2020Renaissance Technologies LLCBuy65,500191,917$69,539
Q2 2020Cantillon Capital ManagementBuy10,323980,848$355,400
Q2 2020Viking Global InvestorsBuy588,1071,734,144$628,350
Q1 2020Eagle Capital ManagementSell-13629,079$8,247
Q1 2020Dodge & Cox Stock FundSell-6536,290$10,292
Q1 2020Sound Shore ManagementSell-41,748316,933$89,882
Q1 2020Mairs & Power Growth FundSell-751,456$413
Q1 2020Sequoia Financial AdvisorsBuy412,613$741
Q1 2020Matrix Advisors Value FundSell-5,61432,741$9,285
Q1 2020Renaissance Technologies LLCSell-236,327126,417$35,852
Q1 2020Cantillon Capital ManagementSell-1,256970,525$275,241
Q4 2019Mairs & Power Growth FundSell-2291,531$497
Q4 2019Eagle Capital ManagementSell-7229,215$9,491
Q4 2019Dodge & Cox Stock FundSell-28836,355$11,811
Q4 2019Sound Shore ManagementSell-90,338358,681$116,525
Q4 2019Sequoia Financial AdvisorsBuy4812,572$836
Q4 2019Olstein Capital ManagementSell-1,0009,500$3,086
Q4 2019Matrix Advisors Value FundSell-2,16038,355$12,460
Q4 2019Meritage GroupSell-88,162821,795$266,977
Q4 2019Egerton Capital UKBuy619,097934,456$303,577
Q4 2019Cantillon Capital ManagementSell-21,083971,781$315,702

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.