Idexx Laboratories IDXX Institutional Ownership

NASDAQ IDXX

$506.48 -7.14 (-1.39%)

At close: Sep 17, 2026 · 4:00 PM EDT

Institutions by Trading Activity

1,285 Institutions

Increased 586 45.6%

Unchanged 204 15.9%

Reduced 495 38.5%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

94.54%

▲+5.23 pp QoQ

Shares Held by Institutions

74.64Mn

of 78.95Mn outstanding

▲+6.24% QoQ

Shares Outstanding

78.95Mn

4.31Mn held outside 13F filers

Institutional Investors

1,285

filed 13F for Jun 2026

▼-14 vs prior quarter

Net Shares Added (QoQ)

+4.39Mn

accumulated since last quarter

Value of Holdings

$37.67Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Idexx Laboratories Inc /De (NASDAQ:IDXX) has 1,285 institutional investors that have filed 13F reports for the period ending June 2026.

Collectively, these holders controlled 94.5% of Idexx Laboratories's outstanding shares in June 2026, up from 89.3% in March 2026.
Their total shares held in IDXX increased 6.24% quarter over quarter, and separately, investors owning Idexx Laboratories increased 5.07% from a year ago.
During the quarter, 586 of these 1,285 funds increased positions in IDXX, 495 reduced exposure, and 204 held steady.
Combined, these investors held 74.64Mn shares in IDXX for June 2026, up by 4.39Mn shares quarter on quarter, and up 187.79K shares year over year.
BlackRock, Inc. is the top holder of Idexx Laboratories as of June 30, 2026, with 8.17Mn shares representing 10.35% of outstanding stock.
Leading buyers of Idexx Laboratories shares for the quarter ending June 2026 were Invesco Ltd. (1.93Mn), Sixth Street Partners Management Company, L.P. (650.43K), FMR LLC (539.67K), NORGES BANK (353.94K), BAILLIE GIFFORD & CO (353.8K).
Top sellers of IDXX stock for the quarter ending June 2026 included Fundsmith LLP (445.9K), Bank of New York Mellon Corp (311.19K), Railway Pension Investments Ltd (211.12K), LOS ANGELES CAPITAL MANAGEMENT LLC (209.77K), BlackRock, Inc. (195.38K).
Per Business Quant, the top 10 investors in IDXX for the quarter ending June 2026 include BlackRock, Inc. (8.17Mn), VANGUARD CAPITAL MANAGEMENT LLC (5.15Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (3.9Mn), State Street Corp (3.75Mn), Invesco Ltd. (3.61Mn), GEODE CAPITAL MANAGEMENT, LLC (2.56Mn), BAMCO INC /NY/ (1.98Mn), Morgan Stanley (1.36Mn), Bank of New York Mellon Corp (1.19Mn), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (1.07Mn).

Form 13F Holdings

1,285 Institutional Holders

Report period 30 Jun, 2026

Total shares held 74.64Mn

Of outstanding 94.54%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	8,170,178	10.35%	▼195,375	-2.34%	$4.30Bn
2	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	5,152,213	6.53%	▼30,294	-0.58%	$2.71Bn
3	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	3,896,521	4.94%	▼14,342	-0.37%	$2.05Bn
4	State Street Corp	0000093751	3,748,660	4.75%	▲74,475	+2.03%	$1.97Bn
5	Invesco Ltd.	0000914208	3,611,416	4.57%	▲1,933,371	+115.22%	$1.90Bn
6	GEODE CAPITAL MANAGEMENT, LLC	0001214717	2,562,886	3.25%	▼98,113	-3.69%	$1.35Bn
7	BAMCO INC /NY/	0001017918	1,976,778	2.50%	▲343,411	+21.02%	$1.04Bn
8	Morgan Stanley	0000895421	1,356,103	1.72%	▲40,149	+3.05%	$713.91Mn
9	Bank of New York Mellon Corp	0001390777	1,193,343	1.51%	▼311,189	-20.68%	$628.22Mn
10	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	0001164508	1,067,078	1.35%	▲228,239	+27.21%	$561.75Mn
11	Fundsmith LLP	0001569205	1,019,887	1.29%	▼445,899	-30.42%	$536.91Mn
12	BLAIR WILLIAM & CO/IL	0000902367	918,556	1.16%	▼27,780	-2.94%	$483.56Mn
13	Northern Trust Corp	0000073124	918,137	1.16%	▲6,244	+0.68%	$483.34Mn
14	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	0000861177	911,489	1.15%	▲39,700	+4.55%	$479.84Mn
15	FMR LLC	0000315066	822,643	1.04%	▲539,667	+190.71%	$433.07Mn
16	AMERICAN CENTURY COMPANIES INC	0000748054	808,358	1.02%	▲208,427	+34.74%	$425.55Mn
17	Capital Research Global Investors	0001422848	789,111	1.00%	▲7,766	+0.99%	$415.47Mn
18	Jpmorgan Chase & Co	0000019617	755,791	0.96%	▼24,091	-3.09%	$405.05Mn
19	Principal Financial Group Inc	0001126328	743,246	0.94%	▼137,943	-15.65%	$391.30Mn
20	Goldman Sachs Group Inc	0000886982	738,708	0.94%	▲21,787	+3.04%	$388.89Mn

Showing 1 to 20 of 1,285 holders