Idexx Laboratories Inc /De (IDXX) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

0Shares Outstanding

533,924Shares held by institutions

$297,395,668Value of institutional holdings

91.83%Institutional ownership %

-0.79%Shares Changed QoQ

1,217No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Idexx Laboratories Inc /De (NASDAQ:IDXX) has 1,341 institutional investors that have filed 13F reports for the period ending December 2025.

Collectively, these holders controlled 103.3% of Idexx Laboratories's outstanding shares in December 2025, up from 91.3% in September 2025.
They increased total shares held in Idexx Laboratories by 16.4% from the prior quarter, while the number of investors in IDXX increased 22.58% year over year.
Of these 1,341 holders, 650 added to their stakes in Idexx Laboratories, 472 trimmed positions, and 219 made no changes.
Institutional investors collectively held 83.38Mn shares in Idexx Laboratories as of December 2025, up by 11.75Mn shares quarter on quarter, and up 8.56Mn shares year over year.
As of December 31, 2025, the biggest holder of Idexx Laboratories is VANGUARD GROUP INC at 9.95Mn shares, representing 12.33% of shares outstanding.
The biggest buyers of Idexx Laboratories for the quarter ending December 2025 included Elyxium Wealth, LLC (5.42Mn), J. Stern & Co. LLP (5.3Mn), NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO (1.44Mn), WELLINGTON MANAGEMENT GROUP LLP (592.83K), NORGES BANK (491.13K).
Leading sellers of Idexx Laboratories shares for the quarter ending December 2025 were Jpmorgan Chase & Co (1.07Mn), Fundsmith LLP (734.42K), MACQUARIE GROUP LTD (509.78K), Bank Of America Corp /De/ (489.32K), Bank of New York Mellon Corp (432.21K).
Per Business Quant data, the top 10 holders of Idexx Laboratories for the quarter ending December 2025 are VANGUARD GROUP INC (9.95Mn), BlackRock, Inc. (8.53Mn), Elyxium Wealth, LLC (5.42Mn), J. Stern & Co. LLP (5.31Mn), State Street Corp (3.66Mn), GEODE CAPITAL MANAGEMENT, LLC (2.58Mn), Fundsmith LLP (1.88Mn), BAMCO INC /NY/ (1.8Mn), Bank of New York Mellon Corp (1.62Mn), Morgan Stanley (1.55Mn).

1,343 Institutional Holders

533,924 Total Shares Held

Rows:

Download Data

Owner Name	Date	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	329,875	4.02%	$0.00
VANGUARD GROUP INC	31 Dec, 2025	-16,697	-0.17%	$0.00
Elyxium Wealth, LLC	31 Dec, 2025	5,419,507	0.00%	$0.00
HSBC HOLDINGS PLC	31 Dec, 2025	126,130	65.30%	$0.00
State Street Corp	31 Dec, 2025	138,956	3.95%	$0.00
J. Stern & Co. LLP	31 Dec, 2025	5,295,551	47,489.47%	$0.00
Barclays Plc	31 Dec, 2025	-477,588	-69.31%	$0.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	86,263	3.45%	$0.00
FUNDSMITH INVESTMENT SERVICES LTD.	31 Dec, 2025	-134,498	-19.54%	$0.00
Rockefeller Capital Management L.P.	31 Dec, 2025	52,465	97.60%	$0.00
Fundsmith LLP	31 Dec, 2025	-734,422	-28.13%	$0.00
Nuveen, LLC	31 Dec, 2025	17,876	3.99%	$0.00
PEAK6 LLC	31 Dec, 2025	2,373	74.37%	$0.00
BAMCO INC /NY/	31 Dec, 2025	-86,088	-4.57%	$0.00
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	31 Dec, 2025	-17,695	-3.85%	$0.00
World Investment Advisors	31 Dec, 2025	2,963	352.32%	$0.00
Bank of New York Mellon Corp	31 Dec, 2025	-432,211	-21.01%	$0.00
Railway Pension Investments Ltd	31 Dec, 2025	29,550	9.97%	$0.00
Painted Porch Advisors LLC	31 Dec, 2025	0	0.00%	$0.00
Morgan Stanley	31 Dec, 2025	-68,759	-4.24%	$0.00

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