THERMO FISHER SCIENTIFIC INC (TMO) Institutional Ownership Changes & 13F Activity

THERMO FISHER SCIENTIFIC INC (TMO). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings. This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Viking Global Investors, Renaissance Technologies LLC, Cantillon Capital Management, Parnassus Endeavor Fund, and Lindsell Train.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2021Mairs & Power Growth FundBuy541,204$803
Q3 2021Viking Global InvestorsSell-829,164182,237$104,117
Q3 2021AKO CapitalBuy158,0241,142,461$652,722
Q3 2021Cantillon Capital ManagementSell-15,459901,211$514,889
Q3 2021Sequoia Financial AdvisorsSell-2,809684$391
Q3 2021ARK InvestSell-313999$571
Q3 2021Mairs & Power Growth FundSell-51,150$657
Q3 2021Matrix Advisors Value FundBuy222,064$12,606
Q2 2021Renaissance Technologies LLCSell-261,20061,344$30,946
Q2 2021AKO CapitalBuy248,578984,437$496,619
Q2 2021ARK InvestSell-240,4791,312$662
Q2 2021Viking Global InvestorsBuy149,5141,011,401$510,221
Q2 2021Cantillon Capital ManagementSell-12,734916,670$462,433
Q2 2021Sequoia Financial AdvisorsBuy1,1613,493$1,762
Q2 2021Dodge & Cox Stock FundSell-92531,931$16,108
Q2 2021Matrix Advisors Value FundBuy23322,062$11,130
Q2 2021Mairs & Power Growth FundSell-2001,155$583
Q2 2021Eagle Capital ManagementSell-9428,691$14,474
Q1 2021Viking Global InvestorsBuy784,070861,887$393,348
Q1 2021Renaissance Technologies LLCBuy251,700322,544$147,203
Q1 2021AKO CapitalBuy206,585735,859$335,831
Q1 2021ARK InvestBuy51,522241,791$110,349
Q1 2021Cantillon Capital ManagementSell-34,796929,404$424,161
Q1 2021Dodge & Cox Stock FundSell-1,98932,856$14,995
Q1 2021Sequoia Financial AdvisorsSell-5342,332$1,064
Q1 2021Matrix Advisors Value FundSell-1121,829$9,962
Q4 2020Viking Global InvestorsSell-1,299,40677,817$36,246
Q4 2020ARK InvestBuy190,192190,269$88,623
Q4 2020Renaissance Technologies LLCSell-121,07370,844$32,998
Q4 2020AKO CapitalBuy93,897529,274$246,525

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.

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