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© 2026 DataHeimdall. All rights reserved.Data sourced from SEC EDGAR public filings.
Insider Trades

TMO

THERMO FISHER SCIENTIFIC INC.

Superinvestors

Institutional investors holding TMO

Consensus →
InvestorFundWeightSharesValueQuarter
Lindsell TrainLindsell Train9.67%617,211$303.4M2026Q1
Wallace WeitzWeitz Investment Management4.15%121,000$59.5M2026Q1
Stephen MandelLone Pine Capital3.09%587,696$323.6M2022Q4
John ArmitageEgerton Capital3.03%562,479$293.5M2023Q2
William Von MuefflingCantillon Capital Management2.51%769,698$378.3M2026Q1
Viking Global InvestorsViking Global Investors2.29%1,668,025$819.9M2026Q1
Alex RoepersAtlantic Investment Management2.25%370,000$17.7M2010Q3
Chris HohnTCI Fund Management2.22%1,517,639$882.1M2024Q1
David KatzMatrix Asset Advisors1.02%22,547$11.1M2026Q1
Robert OlsteinOlstein Capital Management0.72%6,750$3K2026Q1
Kenneth FisherFisher Asset Management0.48%2,851,579$1.4B2026Q1
Daniel LoebThird Point0.40%50,000$29.0M2025Q4
Hillman Capital ManagementHillman Value Fund0.22%656$322K2026Q1
AKO CapitalAKO Capital0.14%26,427$11K2025Q2
Christopher DavisDavis Selected Advisers0.01%0$8.3M2007Q3
Bill & Melinda Gates FoundationBill & Melinda Gates Foundation Trust0.01%5,675$2.9M2023Q3
Mairs & PowerMairs & Power Growth Fund0.01%1,241$610K2026Q1
Polen Capital ManagementPolen Capital Management0.01%2,307$1.3M2025Q4
Dodge & CoxDodge & Cox0.01%25,741$12.7M2026Q1
Ruane CunniffSequoia Fund0.00%2,873$408K2015Q4
Bill NygrenOakmark Select Fund – Harris Associates0.00%541$313K2025Q4
First Eagle Investment ManagementFirst Eagle Investment Management0.00%200$38K2017Q4

Congressional Activity

Congressional data coming soon

Insider Activity

3

Total trades

$185K

Volume

2

Buys

1

Sells

Last trade: May 20, 2026

Insider Tradeslast 90 days

DateInsiderTypeValue
May 20, 2026Ruby R ChandyBuy–
May 20, 2026Nelson ChaiBuy–

Congressional Tradeslast 90 days

Congressional trade data is being sourced and will appear here shortly.

Apr 27, 2026
Gianluca Pettiti
Sell
$185K