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Disclosery

TMO THERMO FISHER SCIENTIFIC INC

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COM (common), issuer CIK 97745

2,552 managers (2,613 13F filers) reported a position in TMO shares at 2026-03-31, 332,326,025 shares in all. 138 filers opened a position and 232 filers sold out during the quarter.

Managers
2,552
13F filers
2,613
New
138
Added
981
Reduced
1,101
Sold out
232
Shares held by filers
332,326,025

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
BLAIR WILLIAM & CO/IL172,953$85M0.24%+15,94313F-HRTimeline
BARTLETT & CO. WEALTH MANAGEMENT LLC182,938$84.6M1.08%-11,43113F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\166,108$81.6M0.1%-5,81313F-HRTimelineGroup
MILFORD FUNDS LTD165,244$81.2M1.7%+81,52713F-HRTimeline
Employees Retirement System of Texas163,733$80.5M0.7%-11,82213F-HRTimeline
Canoe Financial LP160,995$79.1M1.08%+160,26313F-HRTimeline
NICHOLAS COMPANY, INC.159,828$78.6M1.54%-14013F-HRTimeline
WATERS PARKERSON & CO., LLC157,772$77.5M3.99%-28213F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…155,228$76.3M0.25%+2,38913F-HRTimeline
Findlay Park Partners LLP154,740$76.1M1.06%+44,00013F-HRTimeline
Aviso Financial Inc.149,740$73.6M2.61%+2,69913F-HRTimeline
KLP KAPITALFORVALTNING AS147,023$72.3M0.28%+4,20013F-HRTimeline
SCOTIA CAPITAL INC.147,090$72.3M0.3%+10,59413F-HRTimeline
Mn Services Vermogensbeheer B.V.146,115$71.8M0.47%-10013F-HRTimeline
HighTower Advisors, LLC145,001$71.3M0.08%-3813F-HRTimeline
Caisse de depot et placement du Quebec144,811$71.2M0.11%-57,41113F-HRTimeline
Calamos Advisors LLCgroup of 2 filers holding141,321$69.5M-30,507Timeline
Harding Loevner LP139,791$68.7M0.71%-5,23413F-HRTimeline
BRIDGES INVESTMENT MANAGEMENT INC139,484$68.6M0.93%-1,95813F-HRTimeline
SUMMITRY LLC139,250$68.4M2.41%-1,23813F-HR/ATimeline
RENAISSANCE TECHNOLOGIES LLC138,964$68.3M0.11%new13F-HRTimeline
Lansforsakringar Fondforvaltning AB (pu…138,295$68M0.36%+17,43813F-HRTimeline
State of Tennessee, Department of Treas…138,004$67.8M0.23%+8,36013F-HRTimeline
T. Rowe Price Investment Management, In…136,654$67.2M0.05%-1,192,19113F-HRTimeline
United Super Pty Ltd in its capacity as…135,932$66.8M1.26%+9,32013F-HRTimeline
SG Americas Securities, LLC143,935$66.7M0.07%+10,21013F-HRTimeline
Federation des caisses Desjardins du Qu…135,749$66.7M0.24%-12,74013F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS134,785$66.3M0.28%+41,00213F-HRTimeline
NORTHWESTERN MUTUAL INVESTMENT MANAGEME…group of 2 filers holding134,750$66.2M+2,906Timeline
WHITTIER TRUST CO135,624$66.2M0.75%+7,93913F-HRTimeline
Formuepleje A/S134,367$66M5.99%-18,63613F-HRTimeline
NEW SOUTH CAPITAL MANAGEMENT INC134,254$66M3.16%-12,20413F-HRTimeline
Raiffeisen Bank International AGin group Raiffeisen Bank International…136,886$66M0.95%-15,49213F-HRTimelineGroup
Tidal Investments LLCin group Tidal Investments LLC133,717$65.7M0.2%new13F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC133,642$65.7M0.08%-20,40713F-HRTimelineGroup
UniSuper Management Pty Ltd133,427$65.6M0.43%+58713F-HRTimeline
Zurich Insurance Group Ltd/FIin group Zurich Insurance Group Ltd/FI133,106$65.4M0.51%+43,79413F-HRTimelineGroup
Tri Locum Partners LP132,413$65.1M9.13%new13F-HRTimeline
Scharf Investments, LLC132,395$65.1M2.01%-7,60913F-HRTimeline
Tredje AP-fonden132,384$65.1M0.36%-22,21013F-HRTimeline
Creative Planningin group Creative Planning129,348$63.6M0.04%+5,09313F-HRTimelineGroup
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…129,235$63.5M0.25%013F-HRTimelineGroup
Bristol Gate Capital Partners Inc.129,062$63.4M4.09%-8,94613F-HRTimeline
ING GROEP NV128,255$63M0.39%+106,12813F-HRTimeline
Evelyn Partners Group Ltdgroup of 3 filers holding127,398$62.6M-8,992Timeline
WESTWOOD HOLDINGS GROUP INCin group WESTWOOD HOLDINGS GROUP INC126,656$62.3M0.45%+28,34313F-HRTimelineGroup
Alyeska Investment Group, L.P.in group Alyeska Investment Group, L.P.124,944$61.4M0.17%-280,60313F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC125,682$61.4M0.03%-19,07013F-HRTimelineGroup
Allspring Global Investments Holdings, …in group Allspring Global Investments …123,675$61.2M0.1%+4,93813F-HRTimelineGroup
DAVIS R M INC122,992$60.5M1.07%-1,13913F-HRTimeline
WEITZ INVESTMENT MANAGEMENT, INC.121,000$59.5M4.15%-13,95013F-HRTimeline
NISA INVESTMENT ADVISORS, LLC120,878$59.5M0.22%-8,98613F-HRTimeline
ABN AMRO INVESTMENT SOLUTIONSgroup of 2 filers holding119,822$58.9M-6,877Timeline
Skye Global Management LP118,500$58.2M1.25%+10,50013F-HRTimeline
Harvest Portfolios Group Inc.118,447$58.2M0.96%+10,87613F-HRTimeline
Impax Asset Management Group plcin group Impax Asset Management Group …117,758$57.9M0.4%-31,37413F-HRTimelineGroup
Janney Montgomery Scott LLC116,856$57.4M0.14%+14,08613F-HRTimeline
TORONTO DOMINION BANKin group TORONTO DOMINION BANK116,473$57.3M0.11%-87,89013F-HRTimelineGroup
CHILTON CAPITAL MANAGEMENT LLC115,397$56.7M1.98%+4,24813F-HRTimeline
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding115,184$56.6M-1,268Timeline
GUYASUTA INVESTMENT ADVISORS INC114,768$56.4M3.26%+77013F-HRTimeline
Resona Asset Management Co.,Ltd.in group Resona Asset Management Co.,L…114,407$56M0.28%+1,83213F-HRTimelineGroup
DNB Asset Management ASin group DNB Asset Management AS113,865$56M0.2%-64213F-HRTimelineGroup
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP112,556$55.3M0.07%-1,61513F-HRTimelineGroup
Groupe la Francaisein group Groupe la Francaise113,485$55.3M0.77%-5,74413F-HRTimelineGroup
Skandinaviska Enskilda Banken AB (publ)112,000$55.1M1.27%-137,60013F-HRTimeline
CALEDONIA INVESTMENTS PLC111,767$55M6.42%013F-HRTimeline
Arvin Capital Management LP111,697$54.9M12.83%+43,89713F-HRTimeline
Danica Pension, Livsforsikringsaktiesel…109,250$53.7M1.01%-10,50713F-HRTimeline
Cetera Investment Advisers107,789$53M0.06%+5,59313F-HRTimeline
COMPASS CAPITAL MANAGEMENT, INC105,632$51.9M3.14%-8,65113F-HRTimeline
ASR Vermogensbeheer N.V.103,533$50.9M0.6%+87113F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM102,966$50.6M0.3%-4,03213F-HRTimeline
Czech National Bank102,322$50.3M0.33%+3,25313F-HRTimeline
Gotham Asset Management, LLC102,065$50.2M0.15%+29,30713F-HRTimeline
CIBC WORLD MARKET INC.100,534$49.4M0.09%-7,89613F-HRTimeline
NISSAY ASSET MANAGEMENT CORP /JAPAN99,415$48.9M0.26%-101,33313F-HRTimeline
Covea Finance98,185$48.3M1.69%+1,66813F-HRTimeline
STATE OF MICHIGAN RETIREMENT SYSTEM98,110$48.2M0.25%-30013F-HRTimeline
SNYDER CAPITAL MANAGEMENT L P97,661$48M0.93%-15,20113F-HRTimeline
M&T Bank Corpin group M&T Bank Corp97,582$48M0.16%-92013F-HR/ATimelineGroup
Dundas Partners LLP97,396$47.9M3.82%-1,01013F-HRTimeline
OPPENHEIMER ASSET MANAGEMENT INC.group of 2 filers holding94,349$46.4M+3,260Timeline
CAPTRUST FINANCIAL ADVISORS94,073$46.2M0.08%+7,34113F-HRTimeline
DF DENT & CO INC93,940$46.2M0.88%-86,04313F-HRTimeline
Marathon Asset Management Ltd93,421$46M1.76%+7,87513F-HRTimeline
FRANKLIN STREET ADVISORS INC /NC93,341$45.9M2.82%-9,76713F-HRTimeline
Crestwood Advisors Group, LLC93,303$45.9M0.77%-2,85513F-HRTimeline
WASHINGTON TRUST Co93,115$45.8M1.55%-64313F-HRTimeline
Guinness Asset Management LTD92,980$45.7M0.79%+8,04913F-HRTimeline
BRAIDWELL LP92,915$45.7M1.52%+12,19013F-HRTimeline
BROWN ADVISORY INCin group BROWN ADVISORY INC92,433$45.4M0.07%+3,21413F-HRTimelineGroup
Cornerstone Investment Partners, LLC92,313$45.4M1.91%-4,99113F-HRTimeline
Ilex Capital Partners (UK) LLP92,014$45.2M1.11%new13F-HRTimeline
ARMISTICE CAPITAL, LLC91,491$45M1.48%+28,65313F-HRTimeline
FJARDE AP-FONDEN /FOURTH SWEDISH NATION…91,418$44.9M0.24%+33,98513F-HRTimeline
Mesirow Financial Investment Management…90,383$44.4M0.72%+5,96313F-HRTimeline
CONFLUENCE INVESTMENT MANAGEMENT LLC90,151$44.3M0.69%-4,91313F-HRTimeline
Midwest Trust Co90,151$44.3M0.55%+8513F-HRTimeline
SILVERCREST ASSET MANAGEMENT GROUP LLC90,091$44.3M0.32%+16,66913F-HRTimeline
Banco Santander, S.A.in group Banco Santander, S.A.89,937$44.2M0.36%-4,77913F-HRTimelineGroup
Welch & Forbes LLC88,934$43.7M0.57%-15013F-HRTimeline
Cannell & Spears LLC88,474$43.5M0.85%-65613F-HR/ATimeline
Border to Coast Pensions Partnership Ltd87,990$43.4M0.73%-112,45213F-HRTimeline
ZWJ INVESTMENT COUNSEL INC87,855$43.2M1.56%+2,32613F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…87,821$43.2M0.22%-2,27913F-HRTimelineGroup
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…87,518$43M0.22%+12613F-HRTimeline
AIA Group Ltdin group AIA Group Ltd86,693$42.6M0.62%-5,75913F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.86,452$42.5M0.06%+1,88313F-HRTimelineGroup
GLENMEDE TRUST CO NAin group GLENMEDE TRUST CO NA85,674$42.1M0.21%+21713F-HRTimelineGroup
TOCQUEVILLE ASSET MANAGEMENT L.P.in group TOCQUEVILLE ASSET MANAGEMENT …85,252$41.9M0.62%+4,52113F-HRTimelineGroup
Magellan Asset Management Ltdin group Magellan Asset Management Ltd83,187$40.9M0.53%+7,60513F-HRTimelineGroup
WestEnd Advisors, LLC82,614$40.6M0.98%-5,03213F-HRTimeline
Henshaw Capital LLC82,609$40.6M1.51%013F-HRTimeline
Americana Partners, LLC81,840$40.2M1.04%-1,52613F-HRTimeline
NORTHEAST INVESTMENT MANAGEMENT81,692$40.2M1.66%-1,14313F-HRTimeline
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…81,049$39.8M0.07%-41,07313F-HRTimeline
Mill Capital Management, LLC80,887$39.8M3.02%+6113F-HRTimeline
JIA INVESTMENT ALLIANCE PTE. LTD.78,800$38.7M4.05%013F-HRTimeline
E. Ohman J:or Asset Management AB77,071$37.9M1%-15,99813F-HRTimeline
BLI - Banque de Luxembourg Investments65,660$37.7M1.13%013F-HRTimeline
Aureus Asset Management, LLC76,103$37.4M2.49%-73013F-HRTimeline
Polar Capital Holdings Plcin group Polar Capital Holdings Plc75,980$37.3M0.16%+14,81613F-HRTimelineGroup
COMMONWEALTH EQUITY SERVICES, LLC75,436$37.1M0.05%-6,35113F-HRTimeline
Fiera Capital Corpin group Fiera Capital Corp75,286$37M0.13%-48,36713F-HRTimelineGroup
IFM Investors Pty Ltd74,625$36.7M0.31%+2,07113F-HRTimeline
OFI INVEST ASSET MANAGEMENT84,888$36.3M0.48%-12,36113F-HRTimeline
HOWLAND CAPITAL MANAGEMENT LLC72,691$35.8M1.41%-3,51613F-HRTimeline
Daiwa Securities Group Inc.in group Daiwa Securities Group Inc.72,046$35.4M0.1%+2,69113F-HRTimelineGroup
KLINGENSTEIN FIELDS & CO LP71,998$35.4M1.39%-76813F-HRTimeline
PensionDanmark Pensionsforsikringsaktie…71,736$35.3M0.34%-4,97813F-HRTimeline
O'SHAUGHNESSY ASSET MANAGEMENT, LLC71,261$35M0.18%+7,59013F-HRTimeline
Aristotle Atlantic Partners, LLCin group ARISTOTLE INVESTMENT SERVICES…71,042$34.9M1.63%-2,56613F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC70,696$34.7M0.03%+18,43213F-HRTimelineGroup
BNP PARIBASin group BNP PARIBAS71,695$34.6M1.1%+1,93913F-HRTimelineGroup
Pathstone Holdings, LLCin group Pathstone Holdings, LLC70,197$34.5M0.14%-7,94413F-HRTimelineGroup
Munich Reinsurance Co Stock Corp in Mun…70,172$34.5M0.85%+7,92213F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC69,837$34.3M0.07%+59,82513F-HRTimelineGroup
Spinecap SAS69,508$34.2M12.54%-52013F-HRTimeline
TD Waterhouse Canada Inc.68,931$34M0.1%+36,71613F-HRTimeline
Artemis Investment Management LLP68,477$33.7M0.36%+6,30413F-HRTimeline
AMALGAMATED BANK68,447$33.6M0.26%-1,35313F-HRTimeline
FACTORY MUTUAL INSURANCE CO68,285$33.6M0.38%-15,80013F-HRTimeline
XPONANCE LLC68,124$33.5M0.24%+8,82913F-HRTimeline
Boston Trust Walden Corpgroup of 2 filers holding67,285$33.1M+22,792Timeline
Markel Group Inc.in group Markel Group Inc.67,100$33M0.28%+4,30013F-HRTimelineGroup
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK67,021$32.9M0.18%-3,65013F-HRTimelineGroup
Nexus Investment Management ULC66,972$32.9M4.6%-32513F-HRTimeline
ALTA CAPITAL MANAGEMENT LLC/65,914$32.4M2.51%-4,85213F-HRTimeline
USS Investment Management Ltd65,801$32.4M0.13%+2,20813F-HRTimeline
C Partners Holding GmbHin group C Partners Holding GmbH65,362$32.1M10.14%+10,96313F-HRTimelineGroup
Advisors Capital Management, LLC65,254$32.1M0.37%+57413F-HRTimeline
Erste Asset Management GmbHin group Erste Asset Management GmbH66,630$32M0.3%-21,23813F-HRTimelineGroup
Bellevue Group AGin group Bellevue Group AG64,412$31.7M0.75%-66513F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…64,399$31.7M0.04%-129,15613F-HRTimelineGroup
Ironvine Capital Partners, LLC64,085$31.5M3.46%-45313F-HRTimeline
COMMERZBANK AKTIENGESELLSCHAFT /FI64,034$31.5M0.66%+25813F-HRTimeline
BRITISH COLUMBIA INVESTMENT MANAGEMENT …63,996$31.5M0.19%-51,94513F-HRTimeline
Private Wealth Partners, LLC63,285$31.1M2.4%-2913F-HRTimeline
Varma Mutual Pension Insurance Co63,217$31.1M0.18%013F-HR/ATimeline
Bollard Group LLC62,107$30.5M0.93%+10713F-HRTimeline
ROCKLAND TRUST CO62,093$30.5M1.22%+2,96013F-HRTimeline
NORTH STAR ASSET MANAGEMENT INC61,741$30.3M1.32%-813F-HRTimeline
Utah Retirement Systems61,398$30.2M0.31%-99613F-HRTimeline
MAI Capital Management61,039$30M0.17%+1,83713F-HRTimeline
Public Sector Pension Investment Board60,839$29.9M0.09%+11,97613F-HRTimeline
Spear Holdings RSC Ltd60,638$29.8M3.19%new13F-HRTimeline
PBCay One RSC Ltd60,635$29.8M3.19%new13F-HRTimeline
Fiduciary Trust Coin group Fiduciary Trust Co60,170$29.6M0.35%-3,71513F-HRTimelineGroup
Williams Jones Wealth Management, LLC.60,073$29.5M0.36%-17,67913F-HRTimeline
MKP Capital Management, L.L.C.60,000$29.5M0.97%new13F-HRTimeline
ONTARIO TEACHERS PENSION PLAN BOARDin group ONTARIO TEACHERS PENSION PLAN…59,473$29.2M0.85%+36,79313F-HRTimelineGroup
Smith Salley Wealth Management59,398$29.2M1.47%+67113F-HRTimeline
PROFESSIONAL ADVISORY SERVICES INC59,015$29M4%+7,99513F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
ASSETMARK, INCin group ASSETMARK, INC58,741$28.9M0.06%+21,08713F-HRTimelineGroup
REGIONS FINANCIAL CORPin group REGIONS FINANCIAL CORP58,636$28.8M0.19%-3,86713F-HRTimelineGroup
BANCO BILBAO VIZCAYA ARGENTARIA, S.A.58,459$28.7M0.2%+24,07213F-HRTimeline
Police & Firemen's Retirement System of…58,256$28.6M0.24%+33613F-HRTimeline
Howard Capital Management Group, LLC57,879$28.4M1.89%+1,30413F-HRTimeline
Andra AP-fonden57,814$28.4M0.34%+53,99013F-HRTimeline
ProShare Advisors LLC57,741$28.4M0.04%-13,55913F-HRTimeline
SHUFRO ROSE & CO LLC57,739$28.4M1.93%+50213F-HRTimeline
Cohen Capital Management, Inc.57,539$28.3M4.39%-1,18913F-HRTimeline
WHITTIER TRUST CO OF NEVADA INC57,900$28.3M0.58%+3,36713F-HRTimeline
NEVILLE RODIE & SHAW INC57,096$28.1M2.04%+21013F-HRTimeline
HERITAGE INVESTORS MANAGEMENT CORP56,987$28M0.85%+55413F-HRTimeline
AVITY INVESTMENT MANAGEMENT INC.56,726$27.9M2.03%+13,07213F-HRTimeline
BI Asset Management Fondsmaeglerselskab…in group BI Asset Management Fondsmaeg…63,614$27.8M0.29%-47,68913F-HRTimelineGroup
National Mutual Insurance Federation of…in group National Mutual Insurance Fed…55,900$27.5M0.21%013F-HRTimelineGroup
New York Life Investment Management LLCin group New York Life Investment Mana…55,871$27.5M0.23%+1,37913F-HRTimelineGroup
Ilmarinen Mutual Pension Insurance Co55,300$27.2M0.21%-12,00013F-HRTimeline
NEOS Investment Management LLC54,991$27M0.14%-4,05613F-HRTimeline
Sanctuary Advisors, LLC54,969$27M0.15%+1,55913F-HRTimeline
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.54,886$27M0.33%+53,43613F-HRTimelineGroup
J. Stern & Co. LLP54,849$27M2.61%-31,454,48313F-HRTimeline
Rakuten Group, Inc.group of 2 filers holding55,820$26.8M+6,248Timeline
Banque Transatlantique SAin group Banque Transatlantique SA54,181$26.7M0.64%-2,10113F-HRTimelineGroup
ATWOOD & PALMER INC54,303$26.7M1.51%+12613F-HRTimeline
Sumitomo Mitsui DS Asset Management Com…in group SUMITOMO MITSUI FINANCIAL GRO…53,878$26.5M0.21%+74513F-HRTimelineGroup
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.53,199$26.1M0.04%-1,87913F-HRTimelineGroup