IDEXX Laboratories Ownership | Who Owns IDEXX Laboratories?
IDEXX Laboratories Ownership Summary
IDEXX Laboratories is owned by 93.22% institutional investors, 0.22% insiders, and 6.56% 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 | 93.22% | 0.22% | 6.56% |
| Sector | Healthcare Stocks | 244.59% | 12.11% | -156.70% |
| Industry | Diagnostics & Research Stocks | 86.12% | 9.74% | 4.14% |
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 | 8.17M | 10.20% | $4.30B |
| Vanguard capital management | 5.15M | 6.43% | $2.71B |
| State street | 3.75M | 4.68% | $1.97B |
| Invesco | 3.61M | 4.51% | $1.90B |
| Geode capital management | 2.56M | 3.20% | $1.35B |
| Bamco inc /ny/ | 1.98M | 2.47% | $1.04B |
| Morgan stanley | 1.36M | 1.69% | $713.91M |
| Bank of new york mellon | 1.19M | 1.49% | $628.22M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Capital counsel llc/ny | 419.15K | 8.62% | $220.66M |
| Manitou investment management | 69.98K | 6.85% | $36.84M |
| Seilern investment management | 97.56K | 6.47% | $51.36M |
| Bourne lent asset management | 31.05K | 5.65% | $16.34M |
| Quantum capital management, llc / nj | 83.63K | 5.52% | $44.03M |
| Haven capital group | 11.49K | 4.86% | $6.05M |
| Nutshell asset management | 25.13K | 4.41% | $13.23M |
| Coalescence partners investment management, lp | 26.78K | 4.14% | $14.10M |
| Fundsmith llp | 1.02M | 3.93% | $536.91M |
| Perkins capital management | 9.70K | 3.84% | $5.11M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Invesco | 3.61M | 0.15% | 1.94M |
| Sixth street partners management company | 650.43K | 0.05% | 650.43K |
| Fmr | 822.64K | 0.02% | 539.67K |
| Blackrock | 9.60M | 0.11% | 395.97K |
| Norges bank | 353.94K | 0.02% | 353.94K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Capital world investors | - | - | -497.85K |
| Fundsmith llp | 1.02M | 3.93% | -445.90K |
| Durable capital partners lp | - | - | -364.76K |
| Bank of new york mellon | 1.19M | 0.10% | -311.19K |
| Generation investment management llp | - | - | -260.39K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Sixth street partners management company | 650.43K | 0.05% | 650.43K | $342.41M |
| Norges bank | 353.94K | 0.02% | 353.94K | $186.33M |
| Baillie gifford | 353.80K | 0.17% | 353.80K | $186.25M |
| Massachusetts financial services co /ma/ | 336.99K | 0.06% | 336.99K | $179.74M |
| Curated wealth partners | 152.30K | 0.07% | 152.30K | $519.59K |
Sold Out
| Holder | Change |
|---|---|
| First premier bank | -1.00 |
| Breakwater investment management | -1.00 |
| Atticus wealth management | -1.00 |
| Tidemark | -1.00 |
| Sittner & nelson | -1.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Jun 30, 2026 | 1,307 | -2.24% | 74,666,492 | 4.31% | 93 | 1.17% | 584 | 6.18% | 501 | -3.84% |
| Mar 31, 2026 | 1,308 | -6.90% | 70,215,093 | -12.89% | 87 | 0.87% | 538 | -19.58% | 511 | 6.24% |
| 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% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard US Total Market Shares ETF | 2.61M | 3.20% | -7.95K |
| Vanguard MStar Total Stk Mkt Idx Invest | 2.51M | 3.19% | 7.26K |
| Vanguard Morn Total Stk Mkt Idx Investor | 2.50M | 3.18% | -29.51K |
| Vanguard Total Stock Mkt Idx Inv | 2.50M | 3.18% | -29.51K |
| R233 Fundsmith Equity (GBP) | 2.52M | 3.10% | - |
| Vanguard Institutional 500 Index Trust | 2.33M | 2.90% | 16.57K |
| Vanguard 500 Index Investor | 2.07M | 2.63% | 21.71K |
| Vanguard Morn Mid Cap Index Instl | 1.71M | 2.17% | -18.05K |
| Vanguard Mid Cap Index Institutional | 1.71M | 2.17% | -18.05K |
| Vanguard MStar Mid Cap Index Instl | 1.71M | 2.17% | -2.27K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Sep 04, 2026 | Kingsley Lawrence D | - | Sell | $1.17M |
| 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 | $713.38K |
| Feb 26, 2026 | MAZELSKY JONATHAN JAY | President and CEO | Sell | $833.51K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q2 | - | - |
| 2026 Q1 | - | 31 |
| 2025 Q4 | - | 4 |
| 2025 Q3 | - | 21 |
| 2025 Q2 | - | 4 |
IDXX Ownership FAQ
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