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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
−57 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
230
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
Balyasny Asset Management LLC555,473$273.0M0.54%+546,969+6,431.9%Added
Natixis Advisors, L.P.550,207$270.4M0.38%−38,598−6.6%Reduced
Adage Capital Partners GP, L.L.C.545,832$268.3M0.41%−18,336−3.3%Reduced
Loring Wolcott & Coolidge Fiduciary Advisors LLP531,221$263.5M2.64%−8,402−1.6%Reduced
FIL Ltd531,867$261.4M0.20%+3,145+0.6%Added
Ensign Peak Advisors, Inc516,570$253.9M0.47%−232,605−31.0%Reduced
Royal London Asset Management Ltd508,538$250.0M0.52%−32,387−6.0%Reduced
Jones Financial Companies LLLP506,040$240.1M0.12%+345,310+214.8%Added
TD Asset Management Inc479,855$235.9M0.19%−217,833−31.2%Reduced
Marshall Wace, LLP477,250$234.6M0.25%−476,578−50.0%Reduced
Kempen Capital Management N.V.440,724$216.6M1.90%−5,405−1.2%Reduced
Veritas Investment Partners (UK) Ltd.438,260$215.5M5.50%−14,738−3.3%Reduced
New York State Common Retirement Fund432,239$212.5M0.30%−1800.0%Reduced
Ci Investments Inc.428,160$210.5M1.02%−119,627−21.8%Reduced
Rockefeller Capital Management L.P.427,331$210.0M0.37%+4,351+1.0%Added
Omers Administration Corp426,690$209.7M1.35%+4,105+1.0%Added
Fifth Third Bancorp418,258$205.6M0.38%+89,478+27.2%Added
Allianz Asset Management GmbH418,106$205.5M0.24%−108,291−20.6%Reduced
Standard Life Aberdeen plc418,065$205.5M0.33%+34,233+8.9%Added
Eurizon Capital SGR S.p.A.418,489$204.8M0.64%−7,946−1.9%Reduced
American Century Companies Inc414,395$203.7M0.10%+41,929+11.3%Added
Railway Pension Investments Ltd408,930$201.0M2.86%−33,440−7.6%Reduced
Southpoint Capital Advisors LP400,000$196.6M4.05%+300,000+300.0%Added
Aviva PLC384,002$188.7M0.32%−22,163−5.5%Reduced
M&G Plc376,718$185.3M0.96%−36,193−8.8%Reduced
Cryder Capital Partners LLP376,681$185.2M12.09%00.0%Unchanged
Great West Life Assurance Co371,628$183.5M0.33%−36,477−8.9%Reduced
Bessemer Group Inc370,265$182.0M0.29%+4,969+1.4%Added
Diamond Hill Capital Management Inc360,652$177.3M1.11%−99,649−21.6%Reduced
Nomura Asset Management International Inc.354,599$174.3M0.30%−34,478−8.9%Reduced
Candriam Luxembourg S.C.A.354,087$174.0M0.90%+56,368+18.9%Added
Point72 Asset Management, L.P.353,541$173.8M0.30%−83,317−19.1%Reduced
Zurcher Kantonalbank (Zurich Cantonalbank)353,363$173.7M0.38%−10,207−2.8%Reduced
Alecta Pensionsforsakring, Omsesidigt352,200$173.2M0.84%−125,700−26.3%Reduced
Van Eck Associates Corp345,752$169.9M0.13%−14,742−4.1%Reduced
Bristol John W & Co Inc342,765$168.5M2.77%−4,260−1.2%Reduced
Local Pensions Partnership Investment Ltd341,705$168.1M3.63%−18,300−5.1%Reduced
Holocene Advisors, LP341,267$167.7M0.41%+124,766+57.6%Added
Perpetual Ltd339,734$167.0M2.56%+67,673+24.9%Added
Brown Brothers Harriman & Co338,619$166.4M0.89%−121,341−26.4%Reduced
Woodline Partners LP337,819$166.0M0.63%+131,470+63.7%Added
LPL Financial LLC337,275$165.8M0.04%+4,283+1.3%Added
State Board of Administration of Florida Retirement System331,552$163.0M0.31%−2,807−0.8%Reduced
Universal- Beteiligungs- und Servicegesellschaft mbH319,489$157.4M0.27%−24,806−7.2%Reduced
Nomura Asset Management Co Ltd319,972$157.3M0.41%+21,719+7.3%Added
Mondrian Investment Partners LTD319,001$156.8M2.71%+21,269+7.1%Added
Credit Agricole S A316,831$155.7M0.51%−209,898−39.8%Reduced
Artisan Partners Limited Partnership312,822$153.8M0.25%+11,891+4.0%Added
Chevy Chase Trust Holdings, Inc.310,001$152.4M0.44%+9,528+3.2%Added
PGGM Investments309,197$152.0M2.66%−37,174−10.7%Reduced
Menora Mivtachim Holdings Ltd.304,632$149.7M0.71%00.0%Unchanged
SEI Investments Co304,642$149.7M0.14%+94,598+45.0%Added
D. E. Shaw & Co., Inc.302,848$148.9M0.12%+255,305+537.0%Added
Russell Investments Group, Ltd.303,653$148.7M0.16%+21,111+7.5%Added
Select Equity Group, L.P.299,500$147.2M0.78%−15,532−4.9%Reduced
New York State Teachers Retirement System299,262$147.1M0.30%+280.0%Added
Compagnie Lombard Odier SCmA299,245$147.1M1.81%−410−0.1%Reduced
Quilter Plc288,042$141.6M2.49%+8,511+3.0%Added
Keybank National Association279,710$137.5M0.50%−12,685−4.3%Reduced
Bank of Nova Scotia270,009$132.7M0.23%+167,302+162.9%Added
Groupama Asset Managment268,550$132.0M1.93%−7,028−2.6%Reduced
Evercore Wealth Management, LLC266,753$131.1M2.06%−8,002−2.9%Reduced
National Bank of Canada266,176$130.8M0.13%+61,133+29.8%Added
Korea Investment CORP266,151$130.8M0.27%+4,752+1.8%Added
Commerce Bank263,371$129.5M0.63%+31,053+13.4%Added
Liontrust Investment Partners LLP260,666$128.1M2.19%−104,298−28.6%Reduced
Route One Investment Company, L.P.258,700$127.2M5.57%−4,900−1.9%Reduced
Bradley Foster & Sargent Inc256,560$126.1M1.96%−2,415−0.9%Reduced
Prudential Financial Inc252,405$124.1M0.15%−150,910−37.4%Reduced
Glenview Capital Management, LLC250,525$123.1M3.33%+26,578+11.9%Added
Sarasin & Partners LLP249,854$122.8M1.50%−14,675−5.5%Reduced
The PNC Financial Services Group, Inc.243,798$119.8M0.07%−4,604−1.9%Reduced
KBC Group NV242,550$119.2M0.30%−779−0.3%Reduced
Danske Bank A/S241,428$118.7M0.29%−32,763−11.9%Reduced
James Hambro & Partners240,709$118.4M4.64%−630−0.3%Reduced
Jennison Associates LLC238,402$117.2M0.08%−38,709−14.0%Reduced
STRS Ohio238,089$117.0M0.46%−9,988−4.0%Reduced
Voya Investment Management LLC237,334$116.7M0.12%+24,034+11.3%Added
CIBC Asset Management Inc236,892$116.4M0.28%+3,299+1.4%Added
iA Global Asset Management Inc.234,697$115.4M1.63%+5,246+2.3%Added
Haverford Trust Co226,910$111.5M1.02%−260−0.1%Reduced
Jupiter Asset Management Ltd234,020$111.0M0.59%+234,020New
Pinebridge Investments LLC224,642$110.4M0.93%+24,365+12.2%Added
Mackenzie Financial Corp222,589$109.4M0.13%−107,077−32.5%Reduced
First Pacific Advisors, LP221,896$109.1M1.53%+3,324+1.5%Added
Public Employees Retirement Association of Colorado221,025$108.6M0.43%−20,076−8.3%Reduced
PFA Pension, Forsikringsaktieselskab220,719$108.5M0.33%−346−0.2%Reduced
Douglas Lane & Associates, LLC218,297$107.3M1.55%+228+0.1%Added
La Banque Postale Asset Management SA211,481$103.9M1.42%−2,819−1.3%Reduced
Storebrand Asset Management AS210,751$103.6M0.30%−3,514−1.6%Reduced
Dixon Mitchell Investment Counsel Inc.208,627$102.7M3.57%−2,124−1.0%Reduced
Agf Management Ltd208,842$102.7M0.46%+72,331+53.0%Added
Great Lakes Advisors, LLC208,253$102.4M0.85%+6,072+3.0%Added
Baird Financial Group, Inc.207,003$101.7M0.16%−20,537−9.0%Reduced
State of Wisconsin Investment Board205,695$101.1M0.23%+6,160+3.1%Added
Asset Management One Co.,Ltd.203,719$100.1M0.30%−920−0.4%Reduced
Retirement Systems of Alabama201,354$99.0M0.33%−142−0.1%Reduced
Cerity Partners LLC200,486$98.5M0.14%−210,556−51.2%Reduced
Congress Asset Management Co200,288$98.4M0.71%−8,690−4.2%Reduced
Mitsubishi UFJ Trust & Banking Corp199,419$98.0M0.24%−17,309−8.0%Reduced