AMERICAN CAPITAL MANAGEMENT INC

Position in IDXX — Idexx Laboratories Inc /De

CIK 1320168 NEW YORK, NY

Back to IDXX Full portfolio

Position in IDXX

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$85,341,188

-$7,964,017 QoQ

Shares Held

162,110

-2.4% QoQ

Ownership

0.206%

of shares outstanding

% of Portfolio

3.84%

of 13F equity value

Holder Rank

#79

of 1,286 holders

Holding Since

Mar 2020

26 quarters on record

Voting authority Sole 48% Shared 0% None 52%

Common Shares in IDXX Over Time

Shares Held

Position Value (USD)

Position in Diagnostics & Research

Healthcare · as of Jun 30, 2026

AMERICAN CAPITAL MANAGEMENT INC holds $230,198,879 across 5 Diagnostics & Research names. IDXX ranks #2 (37.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MEDP	Medpace Holdings, Inc.	210,217	$111,328,821
2	IDXX	Idexx Laboratories Inc /De This page	162,110	$85,341,188
3	NEO	Neogenomics Inc	2,237,707	$32,648,145
4	ICLR	Icon PLC	2,823	$490,383
5	ILMN	Illumina, Inc.	2,220	$390,342

All Filings in IDXX

Export CSV

26 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$85,341,188	162,110	-2.4%	Shares	Sole	2026-08-14
2026-03-31	$93,305,205	166,056	-8.6%	Shares	Sole	2026-05-15
2025-12-31	$122,955,944	181,745	-1.4%	Shares	Sole	2026-02-17
2025-09-30	$117,746,149	184,298	-2.5%	Shares	Sole	2025-11-14
2025-06-30	$101,368,260	189,000	-14.7%	Shares	Sole	2025-08-14
2025-03-31	$93,063,439	221,606	+7.5%	Shares	Sole	2025-05-15
2024-12-31	$85,194,273	206,062	-17.2%	Shares	Sole	2025-02-11
2024-09-30	$125,725,512	248,853	-14.6%	Shares	Sole	2024-11-14
2024-06-30	$141,905,282	291,267	-0.6%	Shares	Sole	2024-08-14
2024-03-31	$158,282,099	293,153	-3.0%	Shares	Sole	2024-05-15
2023-12-31	$167,791,615	302,300	-1.3%	Shares	Sole	2024-02-14
2023-09-30	$133,968,596	306,375	-7.3%	Shares	Sole	2023-11-14
2023-06-30	$165,995,050	330,516	-9.1%	Shares	Sole	2023-08-14
2023-03-31	$181,780,080	363,502	-5.1%	Shares	Sole	2023-05-03
2022-12-31	$156,317,625	383,169	-0.0%	Shares	Sole	2023-02-14
2022-09-30	$124,894,452	383,347	-0.3%	Shares	Sole	2022-11-14
2022-06-30	$134,912,503	384,662	-0.5%	Shares	Sole	2022-08-15
2022-03-31	$211,524,578	386,657	-1.8%	Shares	Sole	2022-05-16
2021-12-31	$259,202,120	393,649	-0.1%	Shares	Sole	2022-02-14
2021-09-30	$245,031,087	394,004	-7.4%	Shares	Sole	2021-11-15
2021-06-30	$268,780,101	425,588	-0.4%	Shares	Sole	2021-08-13
2021-03-31	$209,118,371	427,374	-2.1%	Shares	Sole	2021-05-17
2020-12-31	$218,272,234	436,658	-2.6%	Shares	Sole	2021-02-16
2020-09-30	$176,195,046	448,208	-5.4%	Shares	Sole	2020-11-16
2020-06-30	$156,468,766	473,918	-0.4%	Shares	Sole	2020-08-13
2020-03-31	$115,291,221	475,938	—	Shares	Sole	2020-05-15
No filing history on record for this holder in this stock.