IDEXX Laboratories Ownership | Who Owns IDEXX Laboratories?
IDEXX Laboratories Ownership Summary
IDEXX Laboratories is owned by 87.66% institutional investors, 0.69% insiders, and 11.65% 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 | 87.66% | 0.69% | 11.65% |
| Sector | Healthcare Stocks | 35.64% | 12.08% | 52.28% |
| Industry | Diagnostics & Research Stocks | 52.69% | 10.16% | 37.15% |
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 | 8.37M | 10.44% | $4.70B |
| State street | 3.67M | 4.59% | $2.06B |
| Geode capital management | 2.66M | 3.32% | $1.50B |
| Invesco | 1.68M | 2.10% | $943.16M |
| Bamco inc /ny/ | 1.63M | 2.04% | $917.77M |
| Bank of new york mellon | 1.50M | 1.88% | $845.38M |
| Fundsmith llp | 1.47M | 1.83% | $823.61M |
| Morgan stanley | 1.32M | 1.64% | $739.42M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Capital counsel llc/ny | 420.19K | 10.04% | $236.10M |
| Manitou investment management | 69.98K | 6.85% | $36.84M |
| Seilern investment management | 97.56K | 6.47% | $51.36M |
| Bourne lent asset management | 31.13K | 6.43% | $17.49M |
| Fundsmith llp | 1.47M | 6.42% | $823.61M |
| Fundsmith investment services | 481.59K | 6.14% | $270.60M |
| American capital management | 166.06K | 5.01% | $93.31M |
| Haven capital group | 11.49K | 4.86% | $6.05M |
| Quantum capital management, llc / nj | 56.21K | 4.04% | $31.58M |
| Perkins capital management | 9.70K | 3.84% | $5.11M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Capital world investors | 497.85K | 0.04% | 497.85K |
| Norges bank | 491.13K | 0.04% | 491.13K |
| Vanguard fiduciary trust | 460.66K | 0.07% | 460.66K |
| Blackrock | 9.60M | 0.11% | 395.97K |
| Arrowstreet capital, limited partnership | 838.84K | 0.26% | 288.47K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Elyxium wealth | 12.97K | 2.34% | -5.41M |
| J. stern & co. llp | 4.69K | 0.26% | -2.65M |
| Fundsmith llp | 1.47M | 6.42% | -410.25K |
| Durable capital partners lp | - | - | -364.76K |
| Price t rowe associates inc /md/ | 638.06K | 0.04% | -314.16K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Capital world investors | 497.85K | 0.04% | 497.85K | $279.74M |
| Norges bank | 491.13K | 0.04% | 491.13K | $332.26M |
| Vanguard fiduciary trust | 460.66K | 0.07% | 460.66K | $258.84M |
| Alyeska investment group | 203.27K | 0.32% | 203.27K | $114.22M |
| Vanguard global advisers | 174.86K | 0.05% | 174.86K | $98.25M |
Sold Out
| Holder | Change |
|---|---|
| Sittner & nelson | -1.00 |
| Reston wealth management | -1.00 |
| First premier bank | -1.00 |
| Atticus wealth management | -1.00 |
| Cbiz investment advisory services | -1.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| 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% |
| Mar 31, 2025 | 33 | -97.09% | 6,169,841 | -91.41% | 7 | 0.10% | 16 | -96.76% | 8 | -98.17% |
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 | 2.50M | 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 | 2.05M | 2.60% | -43.22K |
| Vanguard Mid Cap Index Institutional | 1.71M | 2.17% | -18.05K |
| Invesco QQQ Trust | 1.67M | 2.12% | -13.10K |
| Fundsmith Equity I Acc | 1.41M | 1.79% | - |
| iShares Core S&P 500 ETF | 1.09M | 1.38% | 3.45K |
| Fidelity 500 Index | 1.02M | 1.30% | -1.43K |
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 Q2 | - | - |
| 2026 Q1 | - | 31 |
| 2025 Q4 | - | 4 |
| 2025 Q3 | - | 21 |
| 2025 Q2 | - | 4 |
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