13F Filings/TMO

THERMO FISHER SCIENTIFIC INC (TMO): Institutional Ownership

Hedge funds and institutional managers reporting a position in TMO · Health Care. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
41
13F filers
Aggregate Value
$6.6B
Across holders
Last Price
$513.03
2026-06-26
Sector
Health Care
GICS
Holder activity13 new16 added11 reduced
Institutional Holders of TMO
↗
41 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
Fisher Asset Management, LLC
CIK 0000850529
Institutional Manager2.85M$1.4B21.1%0.5%Added+$29.1MQ1 2026
Grantham, Mayo, Van Otterloo & Co. LLC
CIK 0001352662
Institutional Manager2.50M$1.2B18.6%3.1%Added+$44.3MQ1 2026
PRIMECAP MANAGEMENT CO/CA/
CIK 0000763212
Institutional Manager1.98M$974.5M14.7%0.8%Reduced$-36.7MQ1 2026
VIKING GLOBAL INVESTORS LP
CIK 0001103804
Hedge Fund1.67M$819.9M12.4%2.3%Added+$430.0MQ1 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund855K$420.1M6.3%0.1%Added+$247.3MQ1 2026
D1 Capital Partners L.P.
CIK 0001747057
Hedge Fund725K$356.4M5.4%3.2%New—Q1 2026
BALYASNY ASSET MANAGEMENT LLC
CIK 0001218710
Hedge Fund555K$273.0M4.1%0.4%Added+$259.9MQ1 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.
CIK 0001165408
Hedge Fund546K$268.3M4.0%0.4%Reduced$-9.0MQ1 2026
Holocene Advisors, LP
CIK 0001700574
Hedge Fund341K$167.7M2.5%0.4%Added+$61.3MQ1 2026
GLENVIEW CAPITAL MANAGEMENT LLC
CIK 0001138995
Hedge Fund251K$123.1M1.9%3.1%Added+$13.1MQ1 2026
Qube Research & Technologies Ltd
CIK 0001729829
Hedge Fund189K$92.8M1.4%0.1%Added+$3.8MQ1 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund188K$92.4M1.4%0.1%Added+$91.4MQ1 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund139K$68.3M1.0%0.1%New—Q1 2026
STEADFAST CAPITAL MANAGEMENT LP
CIK 0001214822
Hedge Fund93K$53.9M0.8%0.9%New—Q4 2025
Gotham Asset Management, LLC
CIK 0001510387
Hedge Fund102K$50.2M0.8%0.2%Added+$14.4MQ1 2026
Soroban Capital Partners LLC
CIK 0001517857
Hedge Fund83K$40.5M0.6%0.3%New—Q3 2025
BAILLIE GIFFORD & CO
CIK 0001088875
Institutional Manager71K$34.9M0.5%0.0%Reduced$-9.7MQ1 2026
MARKEL CORP (MKL)
CIK 0001096343
Hedge Fund67K$33.0M0.5%0.3%Added+$2.1MQ1 2026
Third Point LLC
CIK 0001040273
Hedge Fund50K$29.0M0.4%0.4%New—Q4 2025
Man Group plc
CIK 0001637460
Hedge Fund43K$21.1M0.3%0.0%Added+$16.9MQ1 2026
Fisher Asset Management, LLCAdded
Institutional Manager
$1.4B· 21.1% of total· 0.5% port· 2.85M sh· +$29.1M QoQ· Q1 2026
Grantham, Mayo, Van Otterloo & Co. LLCAdded
Institutional Manager
$1.2B· 18.6% of total· 3.1% port· 2.50M sh· +$44.3M QoQ· Q1 2026
PRIMECAP MANAGEMENT CO/CA/Reduced
Institutional Manager
$974.5M· 14.7% of total· 0.8% port· 1.98M sh· $-36.7M QoQ· Q1 2026
VIKING GLOBAL INVESTORS LPAdded
Hedge Fund
$819.9M· 12.4% of total· 2.3% port· 1.67M sh· +$430.0M QoQ· Q1 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$420.1M· 6.3% of total· 0.1% port· 855K sh· +$247.3M QoQ· Q1 2026
D1 Capital Partners L.P.New
Hedge Fund
$356.4M· 5.4% of total· 3.2% port· 725K sh· — QoQ· Q1 2026
BALYASNY ASSET MANAGEMENT LLCAdded
Hedge Fund
$273.0M· 4.1% of total· 0.4% port· 555K sh· +$259.9M QoQ· Q1 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.Reduced
Hedge Fund
$268.3M· 4.0% of total· 0.4% port· 546K sh· $-9.0M QoQ· Q1 2026
Holocene Advisors, LPAdded
Hedge Fund
$167.7M· 2.5% of total· 0.4% port· 341K sh· +$61.3M QoQ· Q1 2026
GLENVIEW CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$123.1M· 1.9% of total· 3.1% port· 251K sh· +$13.1M QoQ· Q1 2026
Qube Research & Technologies LtdAdded
Hedge Fund
$92.8M· 1.4% of total· 0.1% port· 189K sh· +$3.8M QoQ· Q1 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$92.4M· 1.4% of total· 0.1% port· 188K sh· +$91.4M QoQ· Q1 2026
RENAISSANCE TECHNOLOGIES LLCNew
Hedge Fund
$68.3M· 1.0% of total· 0.1% port· 139K sh· — QoQ· Q1 2026
STEADFAST CAPITAL MANAGEMENT LPNew
Hedge Fund
$53.9M· 0.8% of total· 0.9% port· 93K sh· — QoQ· Q4 2025
Gotham Asset Management, LLCAdded
Hedge Fund
$50.2M· 0.8% of total· 0.2% port· 102K sh· +$14.4M QoQ· Q1 2026
Soroban Capital Partners LLCNew
Hedge Fund
$40.5M· 0.6% of total· 0.3% port· 83K sh· — QoQ· Q3 2025
BAILLIE GIFFORD & COReduced
Institutional Manager
$34.9M· 0.5% of total· 0.0% port· 71K sh· $-9.7M QoQ· Q1 2026
MARKEL CORP (MKL)Added
Hedge Fund
$33.0M· 0.5% of total· 0.3% port· 67K sh· +$2.1M QoQ· Q1 2026
Third Point LLCNew
Hedge Fund
$29.0M· 0.4% of total· 0.4% port· 50K sh· — QoQ· Q4 2025
Man Group plcAdded
Hedge Fund
$21.1M· 0.3% of total· 0.0% port· 43K sh· +$16.9M QoQ· Q1 2026
Rokos Capital Management LLPNew
Hedge Fund
$18.5M· 0.3% of total· 0.1% port· 32K sh· — QoQ· Q4 2025
DODGE & COXUnchanged
Institutional Manager
$12.7M· 0.2% of total· 0.0% port· 26K sh· +$0 QoQ· Q1 2026
Verition Fund Management LLCAdded
Hedge Fund
$10.5M· 0.2% of total· 0.1% port· 21K sh· +$2.0M QoQ· Q1 2026
ExodusPoint Capital Management, LPNew
Hedge Fund
$8.1M· 0.1% of total· 0.1% port· 20K sh· — QoQ· Q2 2025
Bridgewater Associates, LPAdded
Hedge Fund
$7.1M· 0.1% of total· 0.0% port· 14K sh· +$6.3M QoQ· Q1 2026
TUDOR INVESTMENT CORP ET ALAdded
Hedge Fund
$6.7M· 0.1% of total· 0.0% port· 14K sh· +$2.2M QoQ· Q1 2026
Duquesne Family Office LLCNew
Family Office
$4.9M· 0.1% of total· 0.1% port· 12K sh· — QoQ· Q2 2025
GAMCO INVESTORS, INC. ET ALReduced
Institutional Manager
$2.2M· 0.0% of total· 0.0% port· 5K sh· $-56K QoQ· Q1 2026
Walleye Capital LLCReduced
Hedge Fund
$1.9M· 0.0% of total· 0.0% port· 4K sh· $-23.2M QoQ· Q1 2026
Bridgewater Advisors Inc.Reduced
Hedge Fund
$1.1M· 0.0% of total· 0.1% port· 2K sh· $-19K QoQ· Q1 2026
CAXTON ASSOCIATES LLPNew
Hedge Fund
$996K· 0.0% of total· 0.0% port· 2K sh· — QoQ· Q2 2025
Ancora Advisors, LLCAdded
Hedge Fund
$873K· 0.0% of total· 0.0% port· 2K sh· +$667K QoQ· Q1 2026
Politan Capital Management LPNew
Hedge Fund
$873K· 0.0% of total· 0.1% port· 2K sh· — QoQ· Q3 2025
ICONIQ Capital, LLCNew
Family Office
$457K· 0.0% of total· 0.0% port· 1K sh· — QoQ· Q2 2025
Eisler Capital (UK) Ltd.Reduced
Hedge Fund
$435K· 0.0% of total· 0.0% port· 703 sh· $-47.9M QoQ· Q3 2024
Hudson Bay Capital Management LPNew
Hedge Fund
$376K· 0.0% of total· 0.0% port· 775 sh· — QoQ· Q3 2025
Brevan Howard Capital Management LPReduced
Hedge Fund
$362K· 0.0% of total· 0.0% port· 736 sh· $-3.8M QoQ· Q1 2026
HARRIS ASSOCIATES L PNew
Institutional Manager
$313K· 0.0% of total· 0.0% port· 541 sh· — QoQ· Q4 2025
Schonfeld Strategic Advisors LLCReduced
Hedge Fund
$249K· 0.0% of total· 0.0% port· 507 sh· $-369K QoQ· Q1 2026
MARSHALL WACE, LLPReduced
Hedge Fund
$216K· 0.0% of total· 0.0% port· 439 sh· $-215.7M QoQ· Q1 2026
AQR CAPITAL MANAGEMENT LLCReduced
Hedge Fund
$3K· 0.0% of total· 0.0% port· 7 sh· $-47K QoQ· Q1 2026
1–20 of 41
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