RHUMBLINE ADVISERS

Position in IDXX — Idexx Laboratories Inc /De

CIK 1115418 BOSTON, MA

Position in IDXX

as of Mar 31, 2026 · filed May 12, 2026 Compact

Position Value

$97,617,711

-$19,743,330 QoQ

Shares Held

173,731

+0.1% QoQ

Ownership

0.220%

of shares outstanding

% of Portfolio

0.09%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 60.039371211815975.ToString("F0")% Shared 0.ToString("F0")% None 39.96062878818403.ToString("F0")%

Healthcare · as of Mar 31, 2026

RHUMBLINE ADVISERS holds $1,138,138,827 across 32 Diagnostics & Research names. IDXX ranks #3 (8.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	TMO	Thermo Fisher Scientific Inc.	611,950	$300,791,783
2	DHR	Danaher Corp /De/	1,012,199	$191,912,930
3	IDXX	Idexx Laboratories Inc /De This page	173,731	$97,617,711
4	ILMN	Illumina, Inc.	609,802	$75,164,194
5	A	Agilent Technologies, Inc.	499,389	$56,920,358
6	IQV	Iqvia Holdings Inc.	324,104	$55,272,696
7	WAT	Waters Corp /De/	178,037	$53,019,418
8	MTD	Mettler Toledo International Inc/	42,022	$52,998,146

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$97,617,711	173,731	+0.1%	Shares	Sole	2026-05-12
2025-12-31	$117,361,041	173,475	-0.3%	Shares	Sole	2026-02-13
2025-09-30	$111,183,471	174,026	-3.1%	Shares	Sole	2025-11-06
2025-06-30	$96,282,684	179,518	-2.0%	Shares	Sole	2025-08-12
2025-03-31	$76,932,740	183,195	+4.1%	Shares	Sole	2025-05-29
2024-12-31	$72,753,036	175,970	-3.8%	Shares	Sole	2025-05-29
2024-09-30	$92,405,243	182,901	-0.5%	Shares	Sole	2024-11-12
2024-06-30	$89,581,464	183,870	+2.6%	Shares	Sole	2024-08-01
2024-03-31	$96,731,159	179,155	+1.1%	Shares	Sole	2024-05-09
2023-12-31	$98,333,768	177,162	-2.7%	Shares	Sole	2024-02-08
2023-09-30	$79,590,136	182,016	+1.0%	Shares	Sole	2023-11-09
2023-06-30	$90,474,725	180,146	+2.0%	Shares	Sole	2023-08-08
2023-03-31	$88,293,624	176,559	+7.2%	Shares	Sole	2023-05-11
2022-12-31	$67,219,569	164,770	+5.4%	Shares	Sole	2023-02-14
2022-09-30	$50,908,204	156,256	+0.4%	Shares	Sole	2022-11-10
2022-06-30	$54,566,573	155,580	+3.3%	Shares	Sole	2022-08-11
2022-03-31	$82,397,630	150,619	-2.9%	Shares	Sole	2022-05-12
2021-12-31	$102,144,924	155,127	-1.6%	Shares	Sole	2022-02-10
2021-09-30	$98,055,594	157,671	+3.1%	Shares	Sole	2021-11-12
2021-06-30	$96,545,048	152,870	-2.7%	Shares	Sole	2021-08-05
2021-03-31	$76,904,363	157,169	-6.4%	Shares	Sole	2021-05-06
2020-12-31	$83,973,661	167,991	-3.2%	Shares	Sole	2021-02-10
2020-09-30	$68,212,447	173,520	-2.5%	Shares	Sole	2020-11-12
2020-06-30	$58,760,226	177,975	+0.8%	Shares	Sole	2020-08-13
2020-03-31	$42,763,838	176,535	—	Shares	Sole	2020-05-06
No filing history on record for this holder in this stock.