IDEXX Laboratories Ownership | Who Owns IDEXX Laboratories?
IDEXX Laboratories Ownership Summary
IDEXX Laboratories is owned by 60.10% institutional investors, 0.68% insiders, and 39.22% retail investors. Vanguard group is the largest institutional shareholder, holding 12.42% of IDXX shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 3.20% of its assets in IDEXX Laboratories shares.
IDXX Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | IDEXX Laboratories | 60.10% | 0.68% | 39.22% |
| Sector | Healthcare Stocks | 232.01% | 10.74% | -142.75% |
| Industry | Diagnostics & Research Stocks | 35.25% | 10.80% | 53.95% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Vanguard group | 9.95M | 12.42% | $6.73B |
| Blackrock | 9.60M | 11.56% | $4.68B |
| Blackrock funding, inc. /de | 8.53M | 10.66% | $5.77B |
| Elyxium wealth | 5.42M | 6.77% | $5.44M |
| State street | 3.52M | 4.37% | $2.25B |
| Fundsmith llp | 2.61M | 3.25% | $1.67B |
| Geode capital management | 2.58M | 3.23% | $1.75B |
| Bamco inc /ny/ | 1.88M | 2.34% | $1.20B |
| Bank of new york mellon | 1.62M | 2.03% | $1.10B |
| Morgan stanley | 1.55M | 1.94% | $1.05B |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Capital counsel llc/ny | 427.04K | 11.03% | $288.91M |
| Fundsmith llp | 2.61M | 8.43% | $1.67B |
| Manitou investment management | 68.99K | 8.18% | $46.68M |
| Haven capital group | 12.14K | 7.70% | $8.21M |
| Bourne lent asset management | 31.13K | 6.99% | $21.06M |
| Fundsmith investment services | 688.36K | 6.85% | $439.78M |
| Quantum capital management, llc / nj | 77.83K | 5.45% | $49.72B |
| Seilern investment management | 100.79K | 5.29% | $68.19M |
| Perkins capital management | 9.70K | 5.21% | $6.56M |
| American capital management | 184.30K | 4.69% | $117.75M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Elyxium wealth | 5.42M | 1.51% | 5.42M |
| Northwestern mutual wealth management | 1.44M | 0.03% | 1.44M |
| Norges bank | 491.13K | 0.04% | 491.13K |
| Blackrock | 9.60M | 0.11% | 395.97K |
| Blackrock funding, inc. /de | 8.53M | 0.10% | 329.88K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Bank of new york mellon | 1.62M | 0.20% | -432.21K |
| Alyeska investment group | - | - | -378.32K |
| Durable capital partners lp | - | - | -364.76K |
| Principal financial group | 968.95K | 0.33% | -346.78K |
| Select equity group | 282.02K | 0.74% | -291.69K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Elyxium wealth | 5.42M | 1.51% | 5.42M | $5.44M |
| Norges bank | 491.13K | 0.04% | 491.13K | $332.26M |
| Zurich insurance group ltd/fi | 224.97K | 1.03% | 224.97K | $143.73M |
| Apg asset management | 45.77K | 0.07% | 45.77K | $26.37M |
| Cibc world markets | 43.04K | 0.14% | 43.04K | $29.12M |
Sold Out
| Holder | Change |
|---|---|
| Sittner & nelson | -1.00 |
| Reston wealth management | -1.00 |
| Atticus wealth management | -1.00 |
| First premier bank | -1.00 |
| Transamerica financial advisors | -1.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 31, 2025 | 954 | -28.22% | 48,136,815 | -33.29% | 60 | 0.75% | 445 | -23.01% | 324 | -34.01% |
| Sep 30, 2025 | 873 | -29.77% | 42,051,138 | -41.34% | 52 | 0.66% | 366 | -40.29% | 327 | -21.20% |
| Jun 30, 2025 | 1,239 | 6.72% | 74,279,521 | 0.96% | 92 | 1.13% | 618 | 5.64% | 407 | 15.95% |
| Mar 31, 2025 | 33 | -97.09% | 6,169,841 | -91.41% | 7 | 0.10% | 16 | -96.76% | 8 | -98.17% |
| Dec 31, 2024 | 802 | -29.21% | 46,571,971 | -35.65% | 56 | 0.73% | 325 | -28.41% | 324 | -24.30% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard US Total Market Shares ETF | 2.61M | 3.20% | -7.95K |
| Vanguard Total Stock Mkt Idx Inv | 2.51M | 3.16% | 5.37K |
| R233 Fundsmith Equity (GBP) | 2.52M | 3.10% | - |
| Vanguard Institutional 500 Index Trust | 2.33M | 2.90% | 16.57K |
| Vanguard 500 Index Investor | 2.03M | 2.55% | 12.43K |
| Fundsmith Equity I Acc | 1.79M | 2.25% | -485.15K |
| Vanguard Mid Cap Index Institutional | 1.73M | 2.17% | -8.98K |
| Invesco QQQ Trust | 1.71M | 2.15% | -3.80K |
| iShares Core S&P 500 ETF | 1.02M | 1.28% | 154.36K |
| Fidelity 500 Index | 1.01M | 1.27% | -560.00 |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Mar 03, 2026 | Hunt Nimrata | Executive Vice President | Sell | $1.12M |
| Feb 26, 2026 | MAZELSKY JONATHAN JAY | President and CEO | Sell | $765.45K |
| Feb 26, 2026 | MAZELSKY JONATHAN JAY | President and CEO | Sell | $833.51K |
| Feb 26, 2026 | MAZELSKY JONATHAN JAY | President and CEO | Sell | $713.38K |
| Feb 26, 2026 | MAZELSKY JONATHAN JAY | President and CEO | Sell | $1.09M |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q1 | - | 31 |
| 2025 Q4 | - | 4 |
| 2025 Q3 | - | 21 |
| 2025 Q2 | - | 4 |
| 2025 Q1 | - | 2 |
IDXX Ownership FAQ
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