IDEXX Laboratories Inc

IDXX

Exchange: Nasdaq
Industry: In Vitro & In Vivo Diagnostic Substances
SEC CIK: 0000874716

SEC filings (opens in a new tab)

In the last 90 days, IDEXX Laboratories Inc insiders filed 0 open-market purchases and 1 sale; 1,306 institutions reported holding it in 13F filings for Q2 2026, worth $39.1B in total; 3 superinvestors hold it, including Fundsmith and Weitz Investment Management.

13F holders, Q3 2026

Institutional positions in IDEXX Laboratories Inc as of Sep 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Q3 2026 data is still coming in (13F filing deadline: Nov 16, 2026), so these numbers are incomplete.

Institutional holders: 6; +1 vs. Q2 2026
Shares held: 1.73K; −457 (−20.9%) vs. Q2 2026
Total value: $908.1K; −$242.3K (−21.1%) vs. Q2 2026
New holders: 1; 1 more added
Sold out: 0; 2 more reduced

1,301 institutions that held it in Q2 2026 haven't filed for Q3 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2026: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting IDXX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holders

Value held

Institutions holding IDXX and their total value by quarter
Quarter	Holders	Value
Q2 2026	1,306	$39.1B
Q1 2026	1,318	$41.2B
Q4 2025	1,385	$50.3B
Q3 2025	1,302	$46.1B
Q2 2025	1,234	$40.0B
Q1 2025	1,143	$31.1B
Q4 2024	1,124	$29.8B
Q3 2024	1,117	$36.7B
Q2 2024	1,110	$36.4B
Q1 2024	1,147	$39.1B
Q4 2023	1,155	$40.5B
Q3 2023	1,061	$32.4B
Q2 2023	1,069	$36.7B
Q1 2023	1,058	$36.4B
Q4 2022	1,001	$30.0B
Q3 2022	925	$24.0B
Q2 2022	959	$25.9B
Q1 2022	1,036	$39.7B
Q4 2021	1,110	$47.1B
Q3 2021	1,063	$44.6B
Q2 2021	1,037	$46.1B
Q1 2021	1,015	$35.6B

Institutions, Q3 2026

Shares, value and share of portfolio for each institution holding IDEXX Laboratories Inc; share changes are against Q2 2026.

Institutions holding IDXX in Q3 2026
Institution	Shares	Value	% of portfolio	Change in shares	Action
Achmea Investment Management B.V.	–	–	–	–	Not filed
Citadel Advisors LLC	–	–	–	–	Not filed
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund	–	–	–	–	Not filed
FORA Capital, LLC	–	–	–	–	Not filed
Swiss Life Asset Management Ltd	–	–	–	–	Not filed
Handelsbanken Fonder AB	–	–	–	–	Not filed
HRT Financial LP	–	–	–	–	Not filed
Prudential Financial Inc	–	–	–	–	Not filed
Worldquant Millennium Advisors LLC	–	–	–	–	Not filed
CIBC Asset Management Inc	–	–	–	–	Not filed
Nykredit A/S	–	–	–	–	Not filed
Thrivent Financial for Lutherans	–	–	–	–	Not filed
Swedbank AB	–	–	–	–	Not filed
Zurcher Kantonalbank (Zurich Cantonalbank)	–	–	–	–	Not filed
Weitz Investment Management, Inc.SuperinvestorWeitz Investment Management	–	–	–	–	Not filed
Nisa Investment Advisors, LLC	–	–	–	–	Not filed
Captrust Financial Advisors	–	–	–	–	Not filed
Advisor Group Holdings, Inc.	–	–	–	–	Not filed
Academy Capital Management Inc	–	–	–	–	Not filed
Marble Harbor Investment Counsel, LLC	–	–	–	–	Not filed
Candriam Luxembourg S.C.A.	–	–	–	–	Not filed
SEB Asset Management AB	–	–	–	–	Not filed
Credit Agricole S A	–	–	–	–	Not filed
Rafferty Asset Management, LLC	–	–	–	–	Not filed
Capital Fund Management S.A.	–	–	–	–	Not filed
Villere St Denis J & Co LLC	–	–	–	–	Not filed
Pacer Advisors, Inc.	–	–	–	–	Not filed
Treasurer of the State of North Carolina	–	–	–	–	Not filed
Frontier Capital Management Co LLC	–	–	–	–	Not filed
Bridgewater Associates, LP	–	–	–	–	Not filed
TCG Advisory Services, LLC	–	–	–	–	Not filed
OP Asset Management Ltd	–	–	–	–	Not filed
Bourne Lent Asset Management Inc	–	–	–	–	Not filed
Toronto Dominion Bank	–	–	–	–	Not filed
State of Michigan Retirement System	–	–	–	–	Not filed
GW Henssler & Associates Ltd	–	–	–	–	Not filed
Stifel Financial Corp	–	–	–	–	Not filed
Ensign Peak Advisors, Inc	–	–	–	–	Not filed
Parnassus Investments	–	–	–	–	Not filed
Envestnet Portfolio Solutions, Inc.	–	–	–	–	Not filed
NS Partners Ltd	–	–	–	–	Not filed
HighTower Advisors, LLC	–	–	–	–	Not filed
Cornerstone Advisors, LLC	–	–	–	–	Not filed
Public Employees Retirement System of Ohio	–	–	–	–	Not filed
Boston Family Office LLC	–	–	–	–	Not filed
Eurizon Capital SGR S.p.A.	–	–	–	–	Not filed
First Citizens Bank & Trust Co	–	–	–	–	Not filed
Coalescence Partners Investment Management, LP	–	–	–	–	Not filed
Franklin Street Advisors Inc	–	–	–	–	Not filed
Brasada Capital Management, LP	–	–	–	–	Not filed
F/M Investments LLC	–	–	–	–	Not filed
State of New Jersey Common Pension Fund D	–	–	–	–	Not filed
Korea Investment CORP	–	–	–	–	Not filed
Macquarie Group Ltd	–	–	–	–	Not filed
Xponance, Inc.	–	–	–	–	Not filed
Nutshell Asset Management Ltd	–	–	–	–	Not filed
Tredje AP-fonden	–	–	–	–	Not filed
Umb Bank N A	–	–	–	–	Not filed
Van Eck Associates Corp	–	–	–	–	Not filed
Ossiam	–	–	–	–	Not filed
Lansforsakringar Fondforvaltning AB (publ)	–	–	–	–	Not filed
Resona Asset Management Co.,Ltd.	–	–	–	–	Not filed
Premier Fund Managers Ltd	–	–	–	–	Not filed
Banco Bilbao Vizcaya Argentaria, S.A.	–	–	–	–	Not filed
Entropy Technologies, LP	–	–	–	–	Not filed
Nissay Asset Management Corp	–	–	–	–	Not filed
Daiwa Securities Group Inc.	–	–	–	–	Not filed
Woodstock Corp	–	–	–	–	Not filed
Oppenheimer Asset Management Inc.	–	–	–	–	Not filed
Mn Services Vermogensbeheer B.V.	–	–	–	–	Not filed
Cetera Investment Advisers	–	–	–	–	Not filed
Arizona State Retirement System	–	–	–	–	Not filed
HM Payson & Co	–	–	–	–	Not filed
Lyell Wealth Management, LP	–	–	–	–	Not filed
Fifth Third Bancorp	–	–	–	–	Not filed
Andra AP-fonden	–	–	–	–	Not filed
Czech National Bank	–	–	–	–	Not filed
Nordea Investment Management AB	–	–	–	–	Not filed
Glenview Trust Co	–	–	–	–	Not filed
Mutual of America Capital Management LLC	–	–	–	–	Not filed
Pathstone Holdings, LLC	–	–	–	–	Not filed
MetLife Investment Management	–	–	–	–	Not filed
Lazard Asset Management LLC	–	–	–	–	Not filed
Retail Employees Superannuation Pty Ltd as trustee for Retail Employees Superannuation Trust	–	–	–	–	Not filed
Guggenheim Capital LLC	–	–	–	–	Not filed
Storebrand Asset Management AS	–	–	–	–	Not filed
Progressive Investment Management Corp	–	–	–	–	Not filed
EFG International AG	–	–	–	–	Not filed
Fred Alger Management, LLC	–	–	–	–	Not filed
DnB Asset Management AS	–	–	–	–	Not filed
Rakuten Investment Management, Inc.	–	–	–	–	Not filed
IFM Investors Pty Ltd	–	–	–	–	Not filed
Toroso Investments, LLC	–	–	–	–	Not filed
Sone Capital Management, LLC	–	–	–	–	Not filed
USS Investment Management Ltd	–	–	–	–	Not filed
Ninety One UK Ltd	–	–	–	–	Not filed
State of Tennessee, Treasury Department	–	–	–	–	Not filed
Keybank National Association	–	–	–	–	Not filed
O'Shaughnessy Asset Management, LLC	–	–	–	–	Not filed
CWM Advisors, LLC	–	–	–	–	Not filed