IDXX Idexx Laboratories
Health Care, filed as IDEXX LABS INC (COM), Equity As of 2026 Q2 among managers we track Quote on Google Finance, opens in a new tab
Bought by 3 managers in 2026 Q2, sold by 3
In 2026 Q2, 1 manager opened a position, 2 added, and 3 trimmed.
Who owns this now
Largest portfolio weights among holders, up to 3.9% (Terry Smith, Fundsmith). Not free-float ownership.
Who owns IDXX
Sorted by value, long equity only, as of 2026 Q2.
| History | |||||
|---|---|---|---|---|---|
| Ron Baron, Bamco Inc. (Baron Capital) | Add +21.0% | 1,976,778 | $1B | History | |
| Terry Smith, Fundsmith | Reduce −30.4% | 1,019,887 | $537M | History | |
| Polen Capital Management | Reduce −23.5% | 532,384 | $280M | History | |
| Jensen Investment Management | Add +2861.0% | 105,709 | $56M | History | |
| Wallace Weitz, Weitz Investment Management | Hold | 35,300 | $19M | History | |
| Farallon Capital Management | New 0.02% | 9,000 | $4.7M | History | |
| Mairs & Power | Hold | 2,080 | $1.1M | History | |
| Bill Nygren / Oakmark, Harris Associates L P | Reduce −5.6% | 455 | $240K | History |
Insider trades
Open-market buys and sales by IDXX's executives, directors and 10% owners in the last 12 months, from their Form 4s
- None no insider bought on the open market
- $37.7M sold by 6 insiders outside a trading plan
- None no planned (10b5-1) sales
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Lawrence D Kingsley DirectorSale$1.2M 2,203 shares at $532.08 19% of stakeTraded Sep 4 Filed Sep 9
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Nimrata Hunt Executive Vice PresidentSale$1.1M 1,758 shares at $634.57 8.8% of stakeTraded Mar 3 Filed Mar 5
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Jonathan Jay Mazelsky CEOSale$15.3M 23,326 shares at $657.55 22% of stakeTraded Feb 26 Filed Mar 2
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Nimrata Hunt Executive Vice PresidentSale$1.8M 2,693 shares at $661.54 12% of stakeTraded Feb 26 Filed Feb 27
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Michael G Erickson Executive Vice PresidentSale$3.4M 5,371 shares at $627.38 30% of stakeTraded Feb 17 Filed Feb 19
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Sophie V. Vandebroek DirectorSale$920K 1,464 shares at $628.62 69% of stakeTraded Feb 17 Filed Feb 19
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George Fennell Executive Vice PresidentSale$7.3M 11,345 shares at $646.72 54% of stakeTraded Feb 10 Filed Feb 11
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Nimrata Hunt Executive Vice PresidentSale$6.6M 9,425 shares at $703.34 31% of stakeTraded Nov 7, 2025 Filed Nov 10, 2025
Also filed in the last 12 months, not counted as buying or selling: 67 option exercises, 12 share withholdings for taxes, and 4 stock grants.
Congress
5 members of Congress traded IDXX in the last three years: 11 buys and 10 sales. 4 members listed it in 2025 annual reports.
-
April McClain Delaney
Sell
$1K–$15K
Jan 13
filed Feb 2
-
April McClain Delaney
Partial sale
$1K–$15K
Dec 2, 2025
filed Jan 5
-
April McClain Delaney
Partial sale
$1K–$15K
Oct 29, 2025
filed Nov 4, 2025
-
April McClain Delaney
Partial sale
$1K–$15K
Oct 16, 2025
filed Nov 4, 2025
-
Byron Donalds
Buy
$1K–$15K
Sep 4, 2025
filed Oct 7, 2025
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Byron Donalds
Buy
$1K–$15K
Sep 4, 2025
filed Oct 7, 2025
SEC filings
Recent issuer filings from EDGAR, 11 shown.
Financials
US-GAAP annual figures by fiscal year, as tagged in Form 10-K. Each value links to its SEC filing.
Income statement
Balance sheet
Ownership over time
13Fs that reported it each quarter. Click a bar for that quarter’s holders.