Idexx LaboratoriesIDXX
13F holders, Q4 2025 (December 31)1,386holders +83
126new positions
78sold out
12famous investors
$610.16avg. 13F price*
At the end of Q4 2025, 1,386 institutions reported holding Idexx Laboratories Inc. (IDXX) in their 13F filings, up 83 from Q3 2025. 126 opened new positions and 78 sold out. The largest holders were Vanguard Group Inc. ($6.7B), BlackRock, Inc. ($5.8B) and State Street Corp. ($2.5B). 12 famous investors held it, including Terry Smith (7.4% of Fundsmith's portfolio), Ron Baron (3.3% of Baron Capital (BAMCO)'s portfolio) and Joel Greenblatt (0.1% of Gotham Asset Management's portfolio).
- Company
- Idexx Laboratories Inc.
- Sector
- Health Care
- CUSIP
- 45168D104
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 126 | $262.2M |
| Exits | 78 | $310.2M |
All 13F filers, Q3 2025 → Q4 2025: 14,731,678 shares bought and 5,514,680 shares sold, net +9,216,998 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 1,386 holders
| Vanguard Group Inc. | 0.10% | Reduce -0.2% | 9,945,328 | $6.7B |
| BlackRock, Inc. | 0.10% | Add +4.0% | 8,534,886 | $5.8B |
| State Street Corp. | 0.08% | Add +4.0% | 3,656,626 | $2.5B |
| Invesco Ltd. | 0.21% | Add +149.7% | 3,296,177 | $2.2B |
| Geode Capital Management, LLC | 0.11% | Add +3.5% | 2,583,939 | $1.7B |
| Fundsmith | 7.42% | Reduce -28.1% | 1,876,035 | $1.3B |
| Baron Capital (BAMCO) | 3.30% | Reduce -4.6% | 1,798,041 | $1.2B |
| Bank of New York Mellon Corp | 0.19% | Reduce -21.0% | 1,624,469 | $1.1B |
| Morgan Stanley | 0.06% | Reduce -4.2% | 1,553,731 | $1.1B |
| Blair William & Co. | 1.82% | Reduce -3.0% | 1,001,375 | $677.5M |
| Principal Financial Group Inc. | 0.33% | Reduce -26.4% | 968,946 | $655.6M |
| Polen Capital Management LLC | 2.78% | Reduce -14.8% | 960,537 | $649.8M |
| T. Rowe Price Associates Inc. | 0.07% | Add +37.2% | 952,223 | $644.2M |
| Northern Trust Corp. | 0.08% | Reduce -2.0% | 923,152 | $624.5M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.12% | Reduce -1.8% | 859,887 | $581.7M |
| Goldman Sachs Group Inc. | 0.08% | Add +16.9% | 832,189 | $563.0M |
| Wellington Management Group LLP | 0.09% | Add +318.1% | 779,214 | $527.2M |
| JPMorgan Chase & Co. | 0.03% | Reduce -22.6% | 673,228 | $455.5M |
| Legal & General Group Plc | 0.10% | Reduce -0.7% | 670,614 | $453.7M |
| American Century Companies Inc. | 0.21% | Reduce -10.8% | 628,934 | $425.5M |
| Franklin Resources Inc. | 0.11% | Add +9.5% | 627,159 | $424.3M |
| Amundi | 0.13% | Add +4.4% | 618,743 | $418.6M |
| Capital Research Global Investors | 0.08% | Reduce -12.0% | 607,754 | $411.2M |
| Charles Schwab Investment Management Inc. | 0.06% | Add +2.5% | 590,062 | $399.2M |
| Fundsmith Investment Services LTD. | 6.86% | Reduce -19.5% | 553,859 | $374.7M |
| Arrowstreet Capital, Limited Partnership | 0.22% | Add +197.3% | 550,368 | $372.3M |
| Dimensional Fund Advisors LP | 0.08% | Add +1.0% | 549,750 | $371.9M |
| Norges Bank | 0.04% | — | 491,131 | $332.3M |
| Bank of America Corp. | 0.02% | Reduce -0.2% | 487,358 | $329.7M |
| Nuveen, LLC | 0.08% | Add +4.0% | 466,130 | $315.4M |
| William Blair Investment Management, LLC | 0.83% | Reduce -3.9% | 441,324 | $298.6M |
| Nomura Asset Management International Inc. | 0.44% | — | 432,059 | $292.3M |
| Capital Counsel LLC | 11.03% | Reduce -1.3% | 427,043 | $288.9M |
| Royal Bank of Canada | 0.05% | Add +17.9% | 398,323 | $269.5M |
| CIBC Private Wealth Group LLC | 0.41% | Reduce -2.1% | 362,871 | $245.5M |
| Deutsche Bank AG | 0.08% | Add +1.4% | 357,539 | $241.9M |
| Schroder Investment Management Group | 0.17% | Add +3.5% | 334,787 | $226.5M |
| Railway Pension Investments Ltd | 2.59% | Add +10.0% | 326,080 | $220.6M |
| Bessemer Group Inc. | 0.32% | Reduce -11.6% | 311,349 | $210.6M |
| KBC Group NV | 0.48% | Add +76.9% | 309,380 | $209.3M |
| AustralianSuper Pty Ltd | 0.94% | Add +213.1% | 300,197 | $203.1M |
| Clearbridge Investments, LLC | 0.16% | Add +4.3% | 292,948 | $198.2M |
| UBS Group AG | 0.04% | Reduce -18.8% | 284,952 | $192.8M |
| Neuberger Berman Group LLC | 0.14% | Add +0.2% | 274,797 | $185.9M |
| TD Asset Management Inc | 0.15% | Reduce -11.9% | 267,850 | $181.2M |
| Williams Jones Wealth Management, LLC. | 2.05% | Reduce -1.9% | 267,765 | $181.2M |
| Raymond James Financial Inc. | 0.05% | Reduce -6.0% | 256,352 | $174.3M |
| FMR LLC | 0.01% | Add +7.9% | 251,407 | $170.1M |
| Caisse de depot et placement du Quebec | 0.29% | Add +61.3% | 248,701 | $168.3M |
| First Trust Advisors LP | 0.12% | Add +2.6% | 236,111 | $159.7M |
| Bank Julius Baer & Co. Ltd, Zurich | 0.43% | Add +0.6% | 231,808 | $157.1M |
| Swiss National Bank | 0.09% | Reduce -5.5% | 219,180 | $148.3M |
| Allianz Asset Management GmbH | 0.17% | Add +191.6% | 216,057 | $146.2M |
| BNP Paribas Financial Markets | 0.09% | Add +32.6% | 213,562 | $144.5M |
| Barclays PLC | 0.06% | Reduce -10.7% | 211,438 | $143.0M |
| Sumitomo Mitsui Trust Group, Inc. | 0.08% | Add +4.3% | 209,106 | $141.5M |
| Comgest Global Investors S.A.S. | 2.50% | Reduce -15.2% | 207,077 | $140.1M |
| Wells Fargo & Company | 0.03% | Add +11.5% | 205,487 | $139.0M |
| Victory Capital Management Inc. | 0.08% | Add +3.4% | 205,340 | $138.9M |
| Epoch Investment Partners, Inc. | 0.75% | Reduce -15.6% | 195,799 | $132.5M |
| Russell Investments Group, Ltd. | 0.14% | Add +12.1% | 193,997 | $131.4M |
| Lord, Abbett & Co. LLC | 0.41% | Add +175.7% | 187,009 | $126.5M |
| Robeco Institutional Asset Management B.V. | 0.18% | Reduce -9.9% | 186,127 | $125.9M |
| Canada Pension Plan Investment Board | 0.08% | Add +17.1% | 184,447 | $124.8M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.08% | Add +0.2% | 184,168 | $123.4M |
| American Capital Management Inc. | 5.42% | Reduce -1.4% | 181,745 | $123.0M |
| Envestnet Asset Management Inc. | 0.04% | Reduce -10.9% | 179,899 | $121.7M |
| Los Angeles Capital Management LLC | 0.41% | Add +41.5% | 191,665 | $120.5M |
| Ameriprise Financial Inc. | 0.03% | Reduce -10.2% | 176,933 | $119.7M |
| Rhumbline Advisers | 0.09% | Reduce -0.3% | 173,475 | $117.4M |
| Montrusco Bolton Investments Inc. | 1.46% | Reduce -23.8% | 176,932 | $117.1M |
| Pictet Asset Management Holding SA | 0.11% | Reduce -38.4% | 172,239 | $116.6M |
| Welch & Forbes LLC | 1.38% | Reduce -0.4% | 168,282 | $113.8M |
| TimesSquare Capital Management, LLC | 1.70% | Reduce -13.3% | 167,251 | $113.2M |
| California Public Employees Retirement System | 0.06% | Add +3.2% | 162,589 | $110.0M |
| HSBC Holdings PLC | 0.06% | Reduce -17.4% | 159,635 | $108.1M |
| Prudential Financial Inc. | 0.13% | Reduce -11.2% | 158,617 | $107.3M |
| Congress Asset Management Co. | 0.73% | Add +9894.0% | 153,908 | $104.1M |
| Liontrust Investment Partners LLP | 1.51% | Reduce -9.0% | 150,780 | $102.0M |
| Westfield Capital Management Co. LP | 0.42% | Add +56.6% | 147,447 | $99.8M |
| ProShare Advisors LLC | 0.18% | Add +35.2% | 147,329 | $99.7M |
| Federated Hermes, Inc. | 0.16% | Add +28.9% | 140,282 | $94.9M |
| Sei Investments Co. | 0.09% | Add +31.4% | 135,876 | $91.9M |
| Bank of Montreal | 0.04% | Reduce -3.8% | 133,804 | $90.5M |
| Select Equity Group, L.P. | 0.41% | Reduce -53.4% | 131,386 | $88.9M |
| Loring Wolcott & Coolidge Fiduciary Advisors LLP | 0.78% | Reduce -2.4% | 124,045 | $86.2M |
| EULAV Asset Management | 2.28% | Reduce 0.0% | 126,218 | $85.4M |
| California State Teachers Retirement System | 0.08% | Reduce -1.0% | 125,402 | $84.8M |
| Voya Investment Management LLC | 0.09% | Add +2.6% | 117,189 | $79.3M |
| Citigroup Inc. | 0.05% | Reduce -19.0% | 117,007 | $79.2M |
| AQR Capital Management | 0.04% | Reduce -15.1% | 114,775 | $77.6M |
| Corient Private Wealth LP | 0.11% | Reduce -1.3% | 114,625 | $77.6M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.13% | Add +0.8% | 114,154 | $77.4M |
| Kayne Anderson Rudnick Investment Management LLC | 0.21% | Reduce -13.1% | 113,107 | $76.5M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.09% | Add +8.9% | 109,861 | $74.3M |
| Rathbones Group PLC | 0.29% | Reduce -7.4% | 108,872 | $73.7M |
| Brown Advisory Inc. | 0.10% | Reduce -1.1% | 107,572 | $72.8M |
| National Pension Service | 0.05% | Reduce -9.2% | 106,344 | $71.9M |
| LGT Capital Partners LTD. | 3.56% | Reduce -11.9% | 105,998 | $71.7M |
| Bradley Foster & Sargent Inc. | 1.04% | Reduce -0.4% | 104,693 | $70.8M |
"% of holder's portfolio" is IDXX's weight in each manager's 13F, not the share of Idexx Laboratories Inc. the manager owns.