IDEXX Laboratories, Inc.

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TickerIDXX

Sector · IndustryHealthcareDiagnostics & Research

13D/G

SecurityCommon Stock · US

CUSIP45168D104

Ask AIAsk AI about IDXX

IDXX institutional ownership changes in Q2 2026: 160 institutions opened or added positions, 177 trimmed or exited. IDXX (IDEXX Laboratories, Inc.) is held by 328 institutional investors as of Q2 2026. Top institutional shareholders: BlackRock, Inc. ($4.3B), Vanguard Capital Management LLC ($2.7B), Vanguard Portfolio Management LLC ($2.1B). Net institutional sentiment: Mixed.

328

Holders

(18 Elite)

$34.9B

Total Value

47% (337)

Consensus

160 buying - 177 selling

Fund holdings as of Jun 30, 2026

Smart Money Verdict

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Institutional (13F)77

Insider (Form 4)28

Activist (13D/13G)84

Congressional (STOCK Act)82

Holder Quality

46

★★★★★

Elite

32

★★★★

Strong

54

★★★

Solid

12

★★

Below

49

★

Weak

Held by 328 funds

18 elite

Who's Trading

Latest move

Source dates: Price Nov 5, 2026 · Insiders Nov 5, 2026 · Activists Oct 30, 2026 · Congress Feb 2, 2026

InsiderInsMJMAZELSKY JONATHAN JAYSell $1.2MNov 4, 2026

InsiderInsMJMAZELSKY JONATHAN JAYSell $2.8MNov 4, 2026

InsiderInsMJMAZELSKY JONATHAN JAYSell $3.2MNov 4, 2026

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Top Holders

FundsInsidersCongressActivists

Holdings (328)History

AllNewIncreasedHeldDecreasedExitedFirst report

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Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BlackRock, Inc.	Decreased	8.2M(-2.3%)	$4.3B	0.1%	+31.86%	0
VAVanguard Capital Management LLC	Decreased	5.2M(-0.6%)	$2.7B	0.1%	+19.60%	0
VPVanguard Portfolio Management LLC	Decreased	3.9M(-0.4%)	$2.1B	0.1%	+19.60%	0
State Street Corp.	Increased	3.7M(+2.0%)	$2B	0.1%	+106.71%	33
Invesco Ltd.	Increased	3.6M(+7.8%)	$1.9B	0.2%	+15.75%	41
Geode Capital Management, LLC	Decreased	2.6M(-3.7%)	$1.3B	0.1%	+93.03%	0
BAMCO Inc.	Increased	2M(+21.0%)	$1B	1.6%	+158.63%	60
Morgan Stanley	Increased	1.4M(+3.0%)	$713.9M	0.0%	+43.44%	33
Bank of New York Mellon Corp	Decreased	1.2M(-20.7%)	$628.2M	0.1%	+30.10%	0
Arrowstreet Capital, Limited Partnership	Increased	1.1M(+27.2%)	$561.8M	0.2%	+14.04%	47
Fundsmith LLP	Decreased	1M(-30.4%)	$536.9M	3.9%	+249.86%	0
William Blair & Co.	Decreased	918,556(-2.9%)	$483.6M	1.3%	+254.07%	0
Northern Trust Corp.	Increased	918,137(+0.7%)	$483.3M	0.1%	+127.53%	31
UBS Asset Management Americas LLC	Increased	911,489(+4.5%)	$479.8M	0.1%	+70.62%	33
FMR LLC	Increased	822,643(+190.7%)	$433.1M	0.0%	+32.76%	50
American Century Companies Inc.	Increased	808,358(+34.7%)	$425.6M	0.2%	+58.78%	48
Capital Research Global Investors	Increased	789,111(+1.0%)	$415.5M	0.1%	+31.68%	31
JPMorgan Chase & Co.	Decreased	755,791(-3.1%)	$405.1M	0.0%	+20.14%	0
Principal Financial Group Inc.	Decreased	743,246(-15.7%)	$391.3M	0.2%	+36.11%	0
Goldman Sachs Group Inc.	Increased	738,708(+3.0%)	$388.9M	0.0%	+31.68%	32

Showing 1-20 of 344

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IDXXIDEXX Laboratories, Inc.

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Questions investors ask about IDXX

Who owns IDXX?

328 institutional investors held IDXX on June 30, 2026, led by BlackRock, Inc. ($4.3B), Vanguard Capital Management LLC ($2.7B) and Vanguard Portfolio Management LLC ($2.1B).

How many hedge funds hold IDXX?

328 institutional investors reported IDXX in their 13F filings for the quarter ended June 30, 2026, $34.9B in all. 18 of them are rated Elite.

Are institutions buying or selling IDXX?

Selling, on balance. In Q2 2026, 177 institutions trimmed or exited IDXX and 160 institutions opened or added to positions.

High Conviction Moves-Smart Money Convergence-Fund Consensus-Double-Down Detection

Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer