STATE OF WISCONSIN INVESTMENT BOARD

Position in TMO — Thermo Fisher Scientific Inc.

CIK 854157 MADISON, WI

Position in TMO

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

Position Value

$101,105,263

-$14,515,292 QoQ

Shares Held

205,695

+3.1% QoQ

Ownership

0.055%

of shares outstanding

% of Portfolio

0.27%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

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

Healthcare · as of Mar 31, 2026

STATE OF WISCONSIN INVESTMENT BOARD holds $358,537,463 across 25 Diagnostics & Research names. TMO ranks #1 (28.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	TMO	Thermo Fisher Scientific Inc. This page	205,695	$101,105,263
2	DHR	Danaher Corp /De/	341,842	$64,813,243
3	IDXX	Idexx Laboratories Inc /De	51,378	$28,868,784
4	A	Agilent Technologies, Inc.	151,816	$17,303,987
5	WAT	Waters Corp /De/	52,777	$15,716,990
6	IQV	Iqvia Holdings Inc.	91,193	$15,552,054
7	DGX	Quest Diagnostics Inc	73,355	$14,376,112
8	MTD	Mettler Toledo International Inc/	11,239	$14,174,626

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$101,105,263	205,695	+3.1%	Shares	Sole	2026-05-15
2025-12-31	$115,620,555	199,535	-1.8%	Shares	Sole	2026-02-17
2025-09-30	$98,509,987	203,105	-2.2%	Shares	Sole	2025-11-14
2025-06-30	$84,197,823	207,660	-9.4%	Shares	Sole	2025-08-14
2025-03-31	$113,997,174	229,094	+3.8%	Shares	Sole	2025-05-15
2024-12-31	$114,873,026	220,812	-3.5%	Shares	Sole	2025-02-14
2024-09-30	$141,485,516	228,730	-25.5%	Shares	Sole	2024-11-14
2024-06-30	$169,871,646	307,182	-17.3%	Shares	Sole	2024-08-14
2024-03-31	$215,984,029	371,611	-0.8%	Shares	Sole	2024-05-14
2023-12-31	$198,914,614	374,752	-0.4%	Shares	Sole	2024-02-12
2023-09-30	$190,359,401	376,078	+1.7%	Shares	Sole	2023-11-14
2023-06-30	$192,889,409	369,697	+14.1%	Shares	Sole	2023-08-14
2023-03-31	$186,700,652	323,925	-2.0%	Shares	Sole	2023-05-15
2022-12-31	$182,042,694	330,572	-8.5%	Shares	Sole	2023-02-14
2022-09-30	$183,239,124	361,283	-8.9%	Shares	Sole	2022-11-14
2022-06-30	$215,431,707	396,539	-2.7%	Shares	Sole	2022-08-15
2022-03-31	$240,607,184	407,360	-9.7%	Shares	Sole	2022-05-13
2021-12-31	$300,869,859	450,917	-3.0%	Shares	Sole	2022-02-11
2021-09-30	$265,538,186	464,772	-6.1%	Shares	Sole	2021-11-12
2021-06-30	$249,612,260	494,801	-1.5%	Shares	Sole	2021-08-12
2021-03-31	$229,333,231	502,505	+18.9%	Shares	Sole	2021-05-17
2020-12-31	$196,844,683	422,613	-5.6%	Shares	Sole	2021-02-03
2020-09-30	$197,572,694	447,483	-3.9%	Shares	Sole	2020-11-16
2020-06-30	$168,802,611	465,868	+1.2%	Shares	Sole	2020-08-12
2020-03-31	$130,591,844	460,479	—	Shares	Sole	2020-05-06
No filing history on record for this holder in this stock.