Thermo Fisher Scientific

TMO • NYSE

Thermo Fisher Scientific is a medical - diagnostics & research company in the healthcare sector on NYSE, led by Marc N. Casper, with a market cap of $234.69B. As of Q3 2025, 87% of shares are held by 2,428 institutional investors, with VANGUARD GROUP INC as the largest holder at 8.96%.

CEOMarc N. Casper

Market Cap$234.69B

Medical - Diagnostics & Research

Healthcare

Employees122.0K

Websitethermofisher.com

Country

United States of America

Overview

Overview of institutional ownership in TMO as of Q3 2025 with a market cap of $183.15B

All Institutions

Institutions: 2,428
Value Held: $158.87B
Shares Held: 327.9M
Avg Position: $65.4M
Median Position: $1.6M

Hedge Funds

Hedge Funds: 119
Value Held: $4.4B
Shares Held: 9.0M
Avg Position: $36.7M
Median Position: $4.0M

Ownership Breakdown

Institutional (non-HF)

84.36%

$154.51B

Hedge Funds

2.38%

$4.4B

Retail & Other

13.25%

$24.3B

Based on market cap of $183.15B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in TMO as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
VANGUARD GROUP INC Institution	Salim Ramji CEO	$16.4B 0.25% of portfolio	8.96% 33.8M shares	≤ Q2 2013 Held for 12y 6m+	$6.69T
BlackRock, Inc. Institution	Laurence D. Fink CEO	$14.4B 0.25% of portfolio	7.85% 29.6M shares	≤ Q2 2013 Held for 12y 6m+	$5.67T
STATE STREET CORP Institution	Ronald P. O'Hanley CEO	$8.0B 0.28% of portfolio	4.34% 16.4M shares	≤ Q2 2013 Held for 12y 6m+	$2.88T
MORGAN STANLEY RIA/Wealth	Jed Finn CEO	$6.2B 0.37% of portfolio	3.37% 12.7M shares	≤ Q2 2013 Held for 12y 6m+	$1.65T
C Capital World Investors Institution	-	$5.0B 0.68% of portfolio	2.72% 10.3M shares	Q3 2013 Held for 12y 3m	$730.00B
GEODE CAPITAL MANAGEMENT LLC ETF Provider	David Kenneth Lane CEO	$3.9B 0.25% of portfolio	2.16% 8.2M shares	≤ Q2 2013 Held for 12y 6m+	$1.57T
FMR LLC Institution	-	$3.7B 0.19% of portfolio	2.01% 7.6M shares	≤ Q2 2013 Held for 12y 6m+	$1.92T
JPMORGAN CHASE & CO Institution	Jamie Dimon CEO	$3.5B 0.23% of portfolio	1.93% 7.3M shares	≤ Q2 2013 Held for 12y 6m+	$1.56T
PRICE T ROWE ASSOCIATES INC /MD/ Long Only Manager	Robert W Sharps President	$3.1B 0.34% of portfolio	1.71% 6.5M shares	≤ Q2 2013 Held for 12y 6m+	$912.31B
FRANKLIN RESOURCES INC Institution	Gregory E. Johnson CEO	$2.9B 0.73% of portfolio	1.57% 5.9M shares	≤ Q2 2013 Held for 12y 6m+	$395.38B

Net Capital Flow

Institutional buying and selling activity for TMO in Q3 2025

Traded: +$3.6B
Buyers: 1,185
Sellers: 1,072
Total Bought: +$14.4B
Total Sold: −$10.8B
Avg Position: $61.7M

Biggest Buyers

Institution	Net Bought	Current Position
FMR LLC Institution	+$1.7B +3.6M shares	$3.7B 7.6M shares
BlackRock, Inc. Institution	+$1.1B +2.3M shares	$14.4B 29.6M shares
D DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main Institution	+$955.5M +2.0M shares	$1.2B 2.5M shares
BANK OF AMERICA CORP /DE/ Institution	+$701.0M +1.4M shares	$2.6B 5.4M shares
WELLINGTON MANAGEMENT CO LLP Long Only Manager	+$616.1M +1.3M shares	$1.3B 2.7M shares
Bank of New York Mellon Corp Institution	+$612.6M +1.3M shares	$1.7B 3.6M shares
FRANKLIN RESOURCES INC Institution	+$498.7M +1.0M shares	$2.9B 5.9M shares
PRICE T ROWE ASSOCIATES INC /MD/ Long Only Manager	+$442.3M +911.8K shares	$3.1B 6.5M shares
C Capital World Investors Institution	+$342.7M +706.6K shares	$5.0B 10.3M shares
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ Long Only Manager	+$288.2M +594.2K shares	$1.4B 2.9M shares

Biggest Sellers

Institution	Net Sold	Current Position
Capital Research Global Investors RIA/Wealth	−$1.1B −2.3M shares	$1.5B 3.2M shares
JPMORGAN CHASE & CO Institution	−$912.2M −1.9M shares	$3.5B 7.3M shares
Q Qube Research & Technologies Ltd Institution	−$765.6M −1.6M shares	$145.3M 299.6K shares
A Amundi Institution	−$430.9M −792.2K shares	$863.2M 1.6M shares
B BNP PARIBAS ARBITRAGE, SA Institution	−$366.0M −754.6K shares	$192.9M 397.7K shares
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	−$362.4M −747.1K shares	$169.6M 349.7K shares
UBS GLOBAL ASSET MANAGEMENT AMERICAS INC Long Only Manager	−$319.2M −658.0K shares	$1.2B 2.4M shares
PRINCIPAL FINANCIAL GROUP INC Institution	−$303.8M −626.4K shares	$277.2M 571.5K shares
R ROYAL BANK OF CANADA Institution	−$287.8M −593.4K shares	$1.3B 2.7M shares
H HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Institution	−$256.4M −528.7K shares	$29.0M 59.7K shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited TMO in Q3 2025

New Positions: 57
New Value: $493.2M
Exited Positions: 146
Exited Value: $1.2B

New Positions

Institution	Position Value
S Southpoint Capital Advisors LP Hedge Fund•Long/Short	$194.0M 400.0K shares
S Spear Holdings RSC Ltd Institution	$109.8M 226.3K shares
F Freestone Grove Partners LP Hedge Fund•Multi-Strategy	$82.5M 170.1K shares
Soroban Capital Partners LLC Hedge Fund•Long/Short	$40.5M 83.4K shares
M Meridiem Capital Partners LP Hedge Fund•Long/Short	$18.7M 38.6K shares
Teca Partners, LP Hedge Fund•Long/Short	$12.3M 25.4K shares
Whitebark Investors LP Hedge Fund•Long/Short	$7.7M 15.8K shares
R Resolute Capital Asset Partners LLC Hedge Fund•Long/Short	$7.3M 15.0K shares
M MONIMUS CAPITAL MANAGEMENT, LP Hedge Fund•Long/Short	$3.0M 6.2K shares
SUMMIT WEALTH GROUP LLC / CO RIA/Wealth	$1.9M 3.7K shares

Exited Positions

Institution	Previous Position
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant	$186.1M 459.0K shares
TWO SIGMA ADVISERS, LLC Hedge Fund•Multi-Strategy	$159.2M 392.7K shares
B BNP Paribas Investment Partners S.A. Institution	$142.6M 351.8K shares
VOLORIDGE INVESTMENT MANAGEMENT, LLC Hedge Fund•Multi-Strategy	$121.7M 300.1K shares
BALYASNY ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy	$99.0M 244.1K shares
CAPITAL FUND MANAGEMENT S.A. Hedge Fund•Quant Macro	$53.5M 131.8K shares
A Atalan Capital Partners, LP Hedge Fund•Long/Short	$44.6M 110.0K shares
C CAPITAL ADVISORS INC/OK Institution	$40.6M 100.2K shares
WORLDQUANT MILLENNIUM QUANTITATIVE STRATEGIES LLC Hedge Fund•Multi-Strategy	$35.0M 86.4K shares
TUDOR INVESTMENT CORP ET AL Hedge Fund•Multi-Strategy	$34.6M 85.3K shares

Options Activity

Institutions with the largest Call and Put options positions in TMO as of Q3 2025

Call Positions: 51
Call Value: $2.0B
Put Positions: 49
Put Value: $1.6B

Call Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$453.9M 9.4K contracts
Aptus Capital Advisors, LLC ETF Provider	$291.0M 6.0K contracts
J JANE STREET GROUP, LLC Institution	$242.5M 5.0K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$167.1M 3.4K contracts
BARCLAYS PLC Institution	$152.8M 3.2K contracts
CAPITAL FUND MANAGEMENT S.A. Hedge Fund•Quant Macro	$89.0M 1.8K contracts
W WOLVERINE TRADING, LLC Institution	$88.4M 1.9K contracts
UBS Group AG Institution	$66.6M 1.4K contracts
S SIG BROKERAGE, LP Institution	$57.0M 1.2K contracts
Q Qube Research & Technologies Ltd Institution	$55.7M 1.1K contracts

Put Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$562.3M 11.6K contracts
J JANE STREET GROUP, LLC Institution	$187.0M 3.9K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$141.9M 2.9K contracts
UBS Group AG Institution	$126.6M 2.6K contracts
Q Qube Research & Technologies Ltd Institution	$111.4M 2.3K contracts
CAPITAL FUND MANAGEMENT S.A. Hedge Fund•Quant Macro	$73.7M 1.5K contracts
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	$43.6M 899.0 contracts
W WOLVERINE TRADING, LLC Institution	$43.5M 942.0 contracts
S Squarepoint Ops LLC Hedge Fund•Quant	$38.5M 794.0 contracts
CAPSTONE INVESTMENT ADVISORS, LLC Hedge Fund•Multi-Strategy	$25.9M 534.0 contracts

Most Committed Institutions

Institutions with TMO as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
Lindsell Train Ltd Long Only Manager	Jocelyn Arthur Saunders COO	9.73% $396.5M	0.22% 817.5K shares	Q4 2024 Held for 1 year	$4.1B
Arvin Capital Management LP Hedge Fund•Long/Short	Rohan Arvin Varavadekar CIO	9.26% $40.0M	0.02% 82.5K shares	Q2 2025 Held for 6 months	$432.0M
C Cryder Capital Partners LLP Institution	-	9.23% $167.2M	0.09% 344.7K shares	Q1 2015 Held for 10y 9m	$1.8B
U Unisphere Establishment Institution	-	7.83% $999.1M	0.55% 2.1M shares	Q4 2023 Held for 2 years	$12.8B
Teca Partners, LP Hedge Fund•Long/Short	Fernando Vigil CIO	7.76% $12.3M	0.01% 25.4K shares	Q3 2025 Held for 3 months	$158.5M
A aeris Capital Holding GmbH Institution	-	7.56% $28.8M	0.02% 59.4K shares	Q1 2025 Held for 9 months	$381.2M
C CAM Group Holding A/S Institution	-	6.36% $364.3M	0.20% 751.1K shares	Q3 2014 Held for 11y 3m	$5.7B
Veritas Asset Management LLP Long Only Manager	Antony Paul Burgess Managing Partner	6.31% $590.8M	0.32% 1.2M shares	Q1 2017 Held for 8y 9m	$9.4B
B BlueSpruce Investments, LP Hedge Fund•Value	Timothy Marc Hurd President	6.29% $273.8M	0.15% 564.5K shares	Q3 2023 Held for 2y 3m	$4.4B
R.H. Dinel Investment Counsel, Inc. RIA/Wealth	Joyce Korsmeyer Dinel President	6.18% $9.6M	0.01% 19.7K shares	Q4 2018 Held for 7 years	$155.0M

Hedge Fund Spotlight

Discover hedge funds investing in TMO

Voleon Capital Management LP

Hedge Fund • Quant

Portfolio ManagerMichael Kharitonov

Portfolio Value: $4.1B
Positions: 884
Last Reported: Q3 2025

Sector Allocation

Position in Thermo Fisher Scientific

Market Value: $1.9M
Shares Held: 3.9K
Portfolio Weight: 0.05%
Owned Since: 2025-Q1

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