FIRST MANHATTAN CO. LLC.

Position in TMO — Thermo Fisher Scientific Inc.

CIK 728083 NEW YORK, NY

Position in TMO

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$377,082,154

-$68,462,745 QoQ

Shares Held

767,160

-0.2% QoQ

Ownership

0.206%

of shares outstanding

% of Portfolio

1.59%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 0.ToString("F0")% Shared 100.ToString("F0")% None 0.ToString("F0")%

Healthcare · as of Mar 31, 2026

FIRST MANHATTAN CO. LLC. holds $889,845,439 across 13 Diagnostics & Research names. TMO ranks #2 (42.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	DHR	Danaher Corp /De/	2,338,542	$443,387,563
2	TMO	Thermo Fisher Scientific Inc. This page	767,160	$377,082,154
3	IQV	Iqvia Holdings Inc.	300,056	$51,171,550
4	A	Agilent Technologies, Inc.	67,234	$7,663,331
5	WAT	Waters Corp /De/	10,473	$3,118,859
6	MTD	Mettler Toledo International Inc/	2,291	$2,889,409
7	PSNL	Personalis, Inc.	230,600	$1,468,922
8	ILMN	Illumina, Inc.	9,058	$1,116,489

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$377,082,154	767,160	-0.2%	Shares	Sole	2026-05-15
2025-12-31	$445,544,899	768,910	-0.8%	Shares	Sole	2026-02-17
2025-09-30	$375,977,803	775,180	-19.0%	Shares	Sole	2025-11-14
2025-06-30	$387,905,203	956,704	+0.9%	Shares	Sole	2025-08-14
2025-03-31	$472,004,948	948,563	+6.4%	Shares	Sole	2025-05-15
2024-12-31	$463,691,923	891,321	+0.6%	Shares	Sole	2025-02-14
2024-09-30	$548,257,148	886,330	-2.1%	Shares	Sole	2024-11-14
2024-06-30	$500,814,496	905,632	-0.9%	Shares	Sole	2024-08-15
2024-03-31	$530,945,215	913,517	-0.5%	Shares	Sole	2024-05-15
2023-12-31	$487,164,900	917,811	-10.1%	Shares	Sole	2024-02-13
2023-09-30	$516,515,608	1,020,439	+6.1%	Shares	Sole	2023-11-14
2023-06-30	$501,769,583	961,705	+32.7%	Shares	Sole	2023-08-14
2023-03-31	$417,778,336	724,844	+11.2%	Shares	Sole	2023-05-15
2022-12-31	$359,078,515	652,052	+2.0%	Shares	Sole	2023-02-14
2022-09-30	$324,092,888	638,997	-0.7%	Shares	Sole	2022-11-14
2022-06-30	$349,584,924	643,471	+2.0%	Shares	Sole	2022-08-15
2022-03-31	$372,483,972	630,634	-0.7%	Shares	Sole	2022-05-16
2021-12-31	$423,780,805	635,125	-0.4%	Shares	Sole	2022-02-14
2021-09-30	$364,454,263	637,905	+0.4%	Shares	Sole	2021-11-15
2021-06-30	$320,396,968	635,116	+16.6%	Shares	Sole	2021-08-16
2021-03-31	$248,622,588	544,771	+0.4%	Shares	Sole	2021-05-14
2020-12-31	$252,848,207	542,849	-1.8%	Shares	Sole	2021-02-16
2020-09-30	$244,047,972	552,745	+2.6%	Shares	Sole	2020-11-12
2020-06-30	$195,269,011	538,911	-3.1%	Shares	Sole	2020-08-14
2020-03-31	$157,753,350	556,253	—	Shares	Sole	2020-05-06
No filing history on record for this holder in this stock.