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IDEXX Laboratories Inc

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

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 2025

Institutional positions in IDEXX Laboratories Inc as of Sep 30, 2025. 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

Institutional holders
1,302
+88 vs. Q2 2025
Shares held
72.2M
−1.78M (−2.4%) vs. Q2 2025
Total value
$46.1B
+$6.43B (+16.2%) vs. Q2 2025
New holders
162
417 more added
Sold out
74
490 more reduced

20 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2025: 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 holdersQ3 2025: 1,302 institutions
Q1 2021: 1,015 institutionsQ2 2021: 1,037 institutionsQ3 2021: 1,063 institutionsQ4 2021: 1,110 institutionsQ1 2022: 1,036 institutionsQ2 2022: 959 institutionsQ3 2022: 925 institutionsQ4 2022: 1,001 institutionsQ1 2023: 1,058 institutionsQ2 2023: 1,069 institutionsQ3 2023: 1,061 institutionsQ4 2023: 1,155 institutionsQ1 2024: 1,147 institutionsQ2 2024: 1,110 institutionsQ3 2024: 1,117 institutionsQ4 2024: 1,124 institutionsQ1 2025: 1,143 institutionsQ2 2025: 1,234 institutionsQ3 2025: 1,302 institutionsQ4 2025: 1,385 institutionsQ1 2026: 1,318 institutionsQ2 2026: 1,306 institutions
Value heldQ3 2025: $46.1B
Q1 2021: $35.6BQ2 2021: $46.1BQ3 2021: $44.6BQ4 2021: $47.1BQ1 2022: $39.7BQ2 2022: $25.9BQ3 2022: $24.0BQ4 2022: $30.0BQ1 2023: $36.4BQ2 2023: $36.7BQ3 2023: $32.4BQ4 2023: $40.5BQ1 2024: $39.1BQ2 2024: $36.4BQ3 2024: $36.7BQ4 2024: $29.8BQ1 2025: $31.1BQ2 2025: $40.0BQ3 2025: $46.1BQ4 2025: $50.3BQ1 2026: $41.2BQ2 2026: $39.1B
Institutions holding IDXX and their total value by quarter
QuarterHoldersValue
Q2 20261,306$39.1B
Q1 20261,318$41.2B
Q4 20251,385$50.3B
Q3 20251,302$46.1B
Q2 20251,234$40.0B
Q1 20251,143$31.1B
Q4 20241,124$29.8B
Q3 20241,117$36.7B
Q2 20241,110$36.4B
Q1 20241,147$39.1B
Q4 20231,155$40.5B
Q3 20231,061$32.4B
Q2 20231,069$36.7B
Q1 20231,058$36.4B
Q4 20221,001$30.0B
Q3 2022925$24.0B
Q2 2022959$25.9B
Q1 20221,036$39.7B
Q4 20211,110$47.1B
Q3 20211,063$44.6B
Q2 20211,037$46.1B
Q1 20211,015$35.6B

Institutions, Q3 2025

Shares, value and share of portfolio for each institution holding IDEXX Laboratories Inc; share changes are against Q2 2025.

Institutions holding IDXX in Q3 2025
InstitutionSharesValue% of portfolioChange in sharesAction
BlackRock, Inc.8,205,011$5.24B0.09%−168,971−2.0%Reduced
Vanguard Group Inc9,962,025$6.36B0.10%+86,040+0.9%Added
Champlain Investment Partners, LLC0$00.00%−192,226−100.0%Sold out
Two Creeks Capital Management, LP0$00.00%−114,459−100.0%Sold out
AXA S.A.0$00.00%−59,141−100.0%Sold out
Worldquant Millennium Advisors LLC0$00.00%−47,227−100.0%Sold out
Trexquant Investment LP0$00.00%−41,173−100.0%Sold out
Wilson Asset Management (International) Pty Ltd0$00.00%−31,034−100.0%Sold out
HRT Financial LP0$00.00%−22,887−100.0%Sold out
Bell Asset Management Ltd0$00.00%−7,515−100.0%Sold out
Nutshell Asset Management Ltd0$00.00%−6,223−100.0%Sold out
Campbell & CO Investment Adviser LLC0$00.00%−5,051−100.0%Sold out
Virtu Financial LLC0$00.00%−3,792−100.0%Sold out
Oak Thistle LLC0$00.00%−2,843−100.0%Sold out
FORA Capital, LLC0$00.00%−2,626−100.0%Sold out
Capstone Investment Advisors, LLC0$00.00%−2,310−100.0%Sold out
V-Square Quantitative Management LLC0$00.00%−2,117−100.0%Sold out
BlueSpruce Investments, LP0$00.00%−2,053−100.0%Sold out
Investidor Profissional Gestao de Recursos Ltda.0$00.00%−1,956−100.0%Sold out
Sargent Investment Group, LLC0$00.00%−1,424−100.0%Sold out
Scientech Research LLC0$00.00%−1,596−100.0%Sold out
Eqis Capital Management, Inc.0$00.00%−1,418−100.0%Sold out
Farmers & Merchants Trust Co of Long Beach0$00.00%−1,368−100.0%Sold out
Dearborn Partners LLC0$00.00%−1,081−100.0%Sold out
Connor, Clark & Lunn Investment Management Ltd.0$00.00%−969−100.0%Sold out
Altfest L J & Co Inc0$00.00%−967−100.0%Sold out
Tectonic Advisors LLC0$00.00%−907−100.0%Sold out
Financial Advocates Investment Management0$00.00%−850−100.0%Sold out
Baader Bank INC0$00.00%−777−100.0%Sold out
Penn Davis McFarland Inc0$00.00%−761−100.0%Sold out
Cornerstone Advisors, LLC0$00.00%−700−100.0%Sold out
Landscape Capital Management, L.L.C.0$00.00%−675−100.0%Sold out
Gitterman Wealth Management, LLC0$00.00%−652−100.0%Sold out
MBB Public Markets I LLC0$00.00%−630−100.0%Sold out
DRW Securities, LLC0$00.00%−611−100.0%Sold out
Marex Group plc0$00.00%−577−100.0%Sold out
Union Bancaire Privee, UBP SA0$00.00%−578−100.0%Sold out
Boothbay Fund Management, LLC0$00.00%−506−100.0%Sold out
Three Bridge Wealth Advisors, LLC0$00.00%−454−100.0%Sold out
New England Research & Management, Inc.0$00.00%−445−100.0%Sold out
Dynasty Wealth Management, LLC0$00.00%−425−100.0%Sold out
Proficio Capital Partners LLC0$00.00%−424−100.0%Sold out
Gryphon Financial Partners LLC0$00.00%−406−100.0%Sold out
Balentine LLC0$00.00%−402−100.0%Sold out
Principal Street Partners, LLC0$00.00%−402−100.0%Sold out
Voloridge Investment Management, LLC0$00.00%−385−100.0%Sold out
City National Bank of Florida0$00.00%−374−100.0%Sold out
GeoWealth Management, LLC0$00.00%−297−100.0%Sold out
Quarry LP0$00.00%−254−100.0%Sold out
NewSquare Capital LLC0$00.00%−75−100.0%Sold out
Ameritas Advisory Services, LLC0$00.00%−67−100.0%Sold out
MorganRosel Wealth Management, LLC0$00.00%−63−100.0%Sold out
Ridgewood Investments LLC0$00.00%−55−100.0%Sold out
Opal Wealth Advisors, LLC0$00.00%−55−100.0%Sold out
Whipplewood Advisors, LLC0$00.00%−54−100.0%Sold out
Front Row Advisors LLC0$00.00%−40−100.0%Sold out
Twin Peaks Wealth Advisors, LLC0$00.00%−32−100.0%Sold out
Kestra Investment Management, LLC0$00.00%−49−100.0%Sold out
Spurstone Advisory Services, LLC0$00.00%−35−100.0%Sold out
Park Square Financial Group, LLC0$00.00%−32−100.0%Sold out
Sierra Ocean, LLC0$00.00%−31−100.0%Sold out
Clal Insurance Enterprises Holdings Ltd0$00.00%−20−100.0%Sold out
Thurston, Springer, Miller, Herd & Titak, Inc.0$00.00%−20−100.0%Sold out
Pineridge Advisors LLC0$00.00%−12−100.0%Sold out
Riggs Asset Managment Co. Inc.0$00.00%−10−100.0%Sold out
Carolina Wealth Advisors, LLC0$00.00%−4−100.0%Sold out
Evergreen Private Wealth LLC0$00.00%−4−100.0%Sold out
Stephens Consulting, LLC0$00.00%−3−100.0%Sold out
WealthTrak Capital Management LLC0$00.00%−3−100.0%Sold out
Longfellow Investment Management Co LLC0$00.00%−3−100.0%Sold out
Total Investment Management Inc0$00.00%−2−100.0%Sold out
Curio Wealth, LLC0$00.00%−2−100.0%Sold out
Wood Tarver Financial Group, LLC0$00.00%−2−100.0%Sold out
Atticus Wealth Management, LLC0$00.00%−1−100.0%Sold out
Sittner & Nelson, LLC0$00.00%−1−100.0%Sold out
LGT Financial Advisors LLC0$00.00%−1−100.0%Sold out
Norges Bank––––Not filed
Martin Currie Ltd––––Not filed
CIBC World Markets Corp––––Not filed
MEAG MUNICH ERGO, Kapitalanlagegesellschaft mbH––––Not filed
Congress Wealth Management LLC––––Not filed
EP Wealth Advisors, LLC––––Not filed
Union Savings Bank––––Not filed
E Fund Management Co., Ltd.––––Not filed
Scott Marsh Financial, LLC––––Not filed
Avantax Advisory Services, Inc.––––Not filed
Oliver Lagore Vanvalin Investment Group––––Not filed
Atria Wealth Solutions, Inc.––––Not filed
Graypoint LLC––––Not filed
J. W. Coons Advisors, LLC––––Not filed
Wambolt & Associates, LLC––––Not filed
Keudell/Morrison Wealth Management––––Not filed
First Horizon Advisors, Inc.––––Not filed
Centricity Wealth Management, LLC––––Not filed
Capital A Wealth Management, LLC––––Not filed
Parkworth Wealth Management, Inc.––––Not filed