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Thermo Fisher Scientific Inc.

TMO
Exchange
NYSE
Industry
Measuring & Controlling Devices, NEC
SEC CIK
0000097745

In the last 90 days, Thermo Fisher Scientific Inc. insiders filed 0 open-market purchases and 11 sales; 2,628 institutions reported holding it in 13F filings for Q2 2026, worth $169.2B in total; 6 superinvestors hold it, including Viking Global Investors and D1 Capital Partners.

13F holders, Q1 2026

Institutional positions in Thermo Fisher Scientific Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
2,612
−56 vs. Q4 2025
Shares held
332.3M
−1.64M (−0.5%) vs. Q4 2025
Total value
$164.1B
−$11.2B (−6.4%) vs. Q4 2025
New holders
173
980 more added
Sold out
229
1,101 more reduced

39 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting TMO on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2026: 2,612 institutions
Q1 2021: 2,046 institutionsQ2 2021: 2,082 institutionsQ3 2021: 2,135 institutionsQ4 2021: 2,347 institutionsQ1 2022: 2,321 institutionsQ2 2022: 2,287 institutionsQ3 2022: 2,270 institutionsQ4 2022: 2,379 institutionsQ1 2023: 2,391 institutionsQ2 2023: 2,392 institutionsQ3 2023: 2,370 institutionsQ4 2023: 2,496 institutionsQ1 2024: 2,535 institutionsQ2 2024: 2,554 institutionsQ3 2024: 2,580 institutionsQ4 2024: 2,625 institutionsQ1 2025: 2,577 institutionsQ2 2025: 2,460 institutionsQ3 2025: 2,515 institutionsQ4 2025: 2,708 institutionsQ1 2026: 2,612 institutionsQ2 2026: 2,628 institutions
Value heldQ1 2026: $164.1B
Q1 2021: $157.2BQ2 2021: $172.9BQ3 2021: $197.5BQ4 2021: $230.1BQ1 2022: $203.3BQ2 2022: $186.4BQ3 2022: $175.3BQ4 2022: $190.1BQ1 2023: $196.1BQ2 2023: $177.8BQ3 2023: $173.1BQ4 2023: $181.6BQ1 2024: $196.3BQ2 2024: $187.5BQ3 2024: $208.3BQ4 2024: $176.4BQ1 2025: $167.8BQ2 2025: $135.6BQ3 2025: $160.7BQ4 2025: $199.1BQ1 2026: $164.1BQ2 2026: $169.2B
Institutions holding TMO and their total value by quarter
QuarterHoldersValue
Q2 20262,628$169.2B
Q1 20262,612$164.1B
Q4 20252,708$199.1B
Q3 20252,515$160.7B
Q2 20252,460$135.6B
Q1 20252,577$167.8B
Q4 20242,625$176.4B
Q3 20242,580$208.3B
Q2 20242,554$187.5B
Q1 20242,535$196.3B
Q4 20232,496$181.6B
Q3 20232,370$173.1B
Q2 20232,392$177.8B
Q1 20232,391$196.1B
Q4 20222,379$190.1B
Q3 20222,270$175.3B
Q2 20222,287$186.4B
Q1 20222,321$203.3B
Q4 20212,347$230.1B
Q3 20212,135$197.5B
Q2 20212,082$172.9B
Q1 20212,046$157.2B

Institutions, Q1 2026

Shares, value and share of portfolio for each institution holding Thermo Fisher Scientific Inc.; share changes are against Q4 2025.

Institutions holding TMO in Q1 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Capitolis Liquid Global Markets LLC196,173$96.4M0.61%+196,173New
Treasurer of the State of North Carolina194,138$95.4M0.30%+6,609+3.5%Added
SEB Asset Management AB190,270$93.5M0.40%+190,270New
Qube Research & Technologies Ltd188,774$92.8M0.13%+188,774New
Quantinno Capital Management LP188,243$92.5M0.15%+19,597+11.6%Added
Two Sigma Investments, LP187,893$92.4M0.08%+178,593+1,920.4%Added
Vanguard Investments Australia, Ltd.187,317$92.1M0.27%+187,317New
Assenagon Asset Management S.A.186,436$91.6M0.15%+175,696+1,635.9%Added
HM Payson & Co184,675$90.8M1.31%−28,086−13.2%Reduced
Blair William & Co172,953$85.0M0.24%+15,943+10.2%Added
Bartlett & Co. Wealth Management LLC182,938$84.6M1.08%−11,431−5.9%Reduced
US Bancorp166,108$81.6M0.10%−5,813−3.4%Reduced
Milford Funds Ltd165,244$81.2M1.70%+81,527+97.4%Added
Employees Retirement System of Texas163,733$80.5M0.70%−11,822−6.7%Reduced
Canoe Financial LP160,995$79.1M1.08%+160,263+21,893.9%Added
Nicholas Company, Inc.159,828$78.6M1.54%−140−0.1%Reduced
Waters Parkerson & Co., LLC157,772$77.5M3.99%−282−0.2%Reduced
Public Employees Retirement System of Ohio155,228$76.3M0.25%+2,389+1.6%Added
Findlay Park Partners LLP154,740$76.1M1.06%+44,000+39.7%Added
Aviso Financial Inc.149,740$73.6M2.61%+2,699+1.8%Added
KLP Kapitalforvaltning AS147,023$72.3M0.28%+4,200+2.9%Added
Scotia Capital Inc.147,090$72.3M0.30%+10,594+7.8%Added
Mn Services Vermogensbeheer B.V.146,115$71.8M0.47%−100−0.1%Reduced
HighTower Advisors, LLC145,001$71.3M0.08%−380.0%Reduced
Caisse de Depot Et Placement du Quebec144,811$71.2M0.11%−57,411−28.4%Reduced
Harding Loevner LP139,791$68.7M0.71%−5,234−3.6%Reduced
Bridges Investment Management Inc139,484$68.6M0.93%−1,958−1.4%Reduced
Summitry LLC139,250$68.4M2.41%−1,238−0.9%Reduced
Calamos Advisors LLC139,230$68.4M0.26%−30,670−18.1%Reduced
Renaissance Technologies LLC138,964$68.3M0.11%+138,964New
Lansforsakringar Fondforvaltning AB (publ)138,295$68.0M0.36%+17,438+14.4%Added
State of Tennessee, Treasury Department138,004$67.8M0.23%+8,360+6.4%Added
T. Rowe Price Investment Management, Inc.136,654$67.2M0.05%−1,192,191−89.7%Reduced
United Super Pty Ltd in its capacity as Trustee for the Construction & Building Unions Superannuation Fund135,932$66.8M1.26%+9,320+7.4%Added
SG Americas Securities, LLC143,935$66.7M0.07%+10,210+7.6%Added
Federation des caisses Desjardins du Quebec135,749$66.7M0.24%−12,740−8.6%Reduced
Teacher Retirement System of Texas134,785$66.3M0.28%+41,002+43.7%Added
Whittier Trust Co135,624$66.2M0.75%+7,939+6.2%Added
Formuepleje A/S134,367$66.0M5.99%−18,636−12.2%Reduced
New South Capital Management Inc134,254$66.0M3.16%−12,204−8.3%Reduced
Raiffeisen Bank International AG136,886$66.0M0.95%−15,492−10.2%Reduced
Toroso Investments, LLC133,717$65.7M0.20%+133,717New
Mariner, LLC133,642$65.7M0.08%−20,407−13.2%Reduced
UniSuper Management Pty Ltd133,427$65.6M0.43%+587+0.4%Added
Zurich Insurance Group Ltd133,106$65.4M0.51%+43,794+49.0%Added
Tri Locum Partners LP132,413$65.1M9.13%+132,413New
Scharf Investments, LLC132,395$65.1M2.01%−7,609−5.4%Reduced
Tredje AP-fonden132,384$65.1M0.36%−22,210−14.4%Reduced
Robeco Schweiz AG130,713$64.2M1.36%+15,508+13.5%Added
Creative Planning129,348$63.6M0.04%+5,093+4.1%Added
State of New Jersey Common Pension Fund D129,235$63.5M0.25%00.0%Unchanged
Bristol Gate Capital Partners Inc.129,062$63.4M4.09%−8,946−6.5%Reduced
ING Groep NV128,255$63.0M0.39%+106,128+479.6%Added
Westwood Holdings Group Inc.126,656$62.3M0.45%+28,343+28.8%Added
Alyeska Investment Group, L.P.124,944$61.4M0.17%−280,603−69.2%Reduced
AQR Capital Management LLC125,682$61.4M0.03%−19,070−13.2%Reduced
Allspring Global Investments Holdings, LLC123,675$61.2M0.10%+4,938+4.2%Added
Davis R M Inc122,992$60.5M1.07%−1,139−0.9%Reduced
Northwestern Mutual Wealth Management Co122,728$60.3M0.04%+2,889+2.4%Added
Weitz Investment Management, Inc.SuperinvestorWeitz Investment Management121,000$59.5M4.15%−13,950−10.3%Reduced
Nisa Investment Advisors, LLC120,878$59.5M0.22%−8,986−6.9%Reduced
Abn Amro Investment Solutions119,822$58.9M0.77%−6,877−5.4%Reduced
Skye Global Management LP118,500$58.2M1.25%+10,500+9.7%Added
Harvest Portfolios Group Inc.118,447$58.2M0.96%+10,876+10.1%Added
Impax Asset Management Group plc117,758$57.9M0.40%−31,374−21.0%Reduced
Janney Montgomery Scott LLC116,856$57.4M0.14%+14,086+13.7%Added
Toronto Dominion Bank116,473$57.3M0.11%−87,890−43.0%Reduced
Chilton Capital Management LLC115,397$56.7M1.98%+4,248+3.8%Added
Guyasuta Investment Advisors Inc114,768$56.4M3.26%+770+0.7%Added
Resona Asset Management Co.,Ltd.114,407$56.0M0.28%+1,832+1.6%Added
DnB Asset Management AS113,865$56.0M0.20%−642−0.6%Reduced
Truist Financial Corp112,556$55.3M0.07%−1,615−1.4%Reduced
Groupe la Francaise113,485$55.3M0.77%−5,744−4.8%Reduced
Skandinaviska Enskilda Banken AB (publ)112,000$55.1M1.27%−137,600−55.1%Reduced
Caledonia Investments PLC111,767$55.0M6.42%00.0%Unchanged
Arvin Capital Management LP111,697$54.9M12.83%+43,897+64.7%Added
Danica Pension, Livsforsikringsaktieselskab109,250$53.7M1.01%−10,507−8.8%Reduced
Evelyn Partners Investment Management LLP109,140$53.6M1.46%+4,783+4.6%Added
Cetera Investment Advisers107,789$53.0M0.06%+5,593+5.5%Added
Cincinnati Insurance Co106,200$52.2M0.79%+106,200New
Compass Capital Management, Inc105,632$51.9M3.14%−8,651−7.6%Reduced
ASR Vermogensbeheer N.V.103,533$50.9M0.60%+871+0.8%Added
Arizona State Retirement System102,966$50.6M0.30%−4,032−3.8%Reduced
Czech National Bank102,322$50.3M0.33%+3,253+3.3%Added
Gotham Asset Management, LLC102,065$50.2M0.15%+29,307+40.3%Added
CIBC World Markets Inc.100,534$49.4M0.09%−7,896−7.3%Reduced
Nissay Asset Management Corp99,415$48.9M0.26%−101,333−50.5%Reduced
Covea Finance98,185$48.3M1.69%+1,668+1.7%Added
State of Michigan Retirement System98,110$48.2M0.25%−300−0.3%Reduced
Snyder Capital Management L P97,661$48.0M0.93%−15,201−13.5%Reduced
M&T Bank Corp97,582$48.0M0.16%−920−0.9%Reduced
Dundas Partners LLP97,396$47.9M3.82%−1,010−1.0%Reduced
Captrust Financial Advisors94,073$46.2M0.08%+7,341+8.5%Added
DF Dent & Co Inc93,940$46.2M0.88%−86,043−47.8%Reduced
Marathon Asset Mgmt Ltd93,421$46.0M1.76%+7,875+9.2%Added
Franklin Street Advisors Inc93,341$45.9M2.82%−9,767−9.5%Reduced
Crestwood Advisors Group LLC93,303$45.9M0.77%−2,855−3.0%Reduced
Washington Trust Co93,115$45.8M1.55%−643−0.7%Reduced
Guinness Asset Management LTD92,980$45.7M0.79%+8,049+9.5%Added
Braidwell LP92,915$45.7M1.52%+12,190+15.1%Added