Idexx LaboratoriesIDXX
13F holders, Q1 2026 (March 31)1,318holders −68
106new positions
171sold out
14famous investors
$561.97avg. 13F price*
At the end of Q1 2026, 1,318 institutions reported holding Idexx Laboratories Inc. (IDXX) in their 13F filings, down 68 from Q4 2025. 106 opened new positions and 171 sold out. The largest holders were BlackRock, Inc. ($4.7B), Vanguard Capital Management LLC ($2.9B) and Vanguard Portfolio Management LLC ($2.2B). 14 famous investors held it, including Terry Smith (6.4% of Fundsmith's portfolio), Ron Baron (2.8% 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 Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 106 | $635.7M |
| Exits | 171 | $182.3M |
All 13F filers, Q4 2025 → Q1 2026: 4,186,587 shares bought and 12,786,011 shares sold, net −8,599,424 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 1,318 holders
| BlackRock, Inc. | 0.08% | Reduce -2.0% | 8,365,553 | $4.7B |
| Vanguard Capital Management LLC | 0.07% | — | 5,182,507 | $2.9B |
| Vanguard Portfolio Management LLC | 0.11% | — | 3,910,863 | $2.2B |
| State Street Corp. | 0.07% | Add +0.5% | 3,674,185 | $2.1B |
| Invesco Ltd. | 0.18% | Add +1.6% | 3,349,677 | $1.9B |
| Geode Capital Management, LLC | 0.09% | Add +3.0% | 2,660,999 | $1.5B |
| Baron Capital (BAMCO) | 2.77% | Reduce -9.2% | 1,633,367 | $917.8M |
| Bank of New York Mellon Corp | 0.16% | Reduce -7.4% | 1,504,532 | $845.4M |
| Fundsmith | 6.42% | Reduce -21.9% | 1,465,786 | $823.6M |
| Morgan Stanley | 0.04% | Reduce -15.3% | 1,315,954 | $739.4M |
| Blair William & Co. | 1.52% | Reduce -5.5% | 946,336 | $531.7M |
| Northern Trust Corp. | 0.07% | Reduce -1.2% | 911,893 | $512.4M |
| Principal Financial Group Inc. | 0.26% | Reduce -9.1% | 881,189 | $495.2M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.10% | Add +1.4% | 871,789 | $489.8M |
| Arrowstreet Capital, Limited Partnership | 0.26% | Add +52.4% | 838,839 | $471.3M |
| Capital Research Global Investors | 0.07% | Add +28.6% | 781,345 | $439.0M |
| JPMorgan Chase & Co. | 0.03% | Add +15.8% | 779,882 | $434.5M |
| Wellington Management Group LLP | 0.08% | Reduce -5.6% | 735,475 | $413.3M |
| Goldman Sachs Group Inc. | 0.05% | Reduce -13.8% | 716,921 | $402.8M |
| Polen Capital Management LLC | 2.70% | Reduce -27.6% | 695,811 | $391.0M |
| Franklin Resources Inc. | 0.09% | Add +5.7% | 662,633 | $372.3M |
| Legal & General Group Plc | 0.08% | Reduce -3.0% | 650,803 | $365.7M |
| T. Rowe Price Associates Inc. | 0.04% | Reduce -33.0% | 638,063 | $358.5M |
| Amundi | 0.09% | Reduce -1.3% | 610,779 | $343.2M |
| Charles Schwab Investment Management Inc. | 0.05% | Add +3.4% | 610,217 | $342.9M |
| American Century Companies Inc. | 0.17% | Reduce -4.6% | 599,931 | $337.1M |
| Dimensional Fund Advisors LP | 0.07% | Add +4.3% | 573,332 | $322.1M |
| Capital World Investors | 0.04% | New | 497,851 | $279.7M |
| Bank of America Corp. | 0.02% | Add +0.1% | 488,017 | $274.2M |
| Fundsmith Investment Services LTD. | 6.14% | Reduce -13.1% | 481,586 | $270.6M |
| Vanguard Fiduciary Trust Co. | 0.07% | — | 460,656 | $258.8M |
| Nuveen, LLC | 0.07% | Reduce -4.4% | 445,804 | $250.5M |
| AustralianSuper Pty Ltd | 1.30% | Add +47.6% | 443,022 | $248.9M |
| Capital Counsel LLC | 10.04% | Reduce -1.6% | 420,195 | $236.1M |
| Nomura Asset Management International Inc. | 0.39% | Reduce -7.6% | 399,376 | $224.4M |
| Royal Bank of Canada | 0.04% | Reduce -1.7% | 391,704 | $220.1M |
| Deutsche Bank AG | 0.07% | Add +8.8% | 388,813 | $218.5M |
| CIBC Bancorp USA Inc. | 0.28% | — | 367,502 | $206.5M |
| William Blair Investment Management, LLC | 0.65% | Reduce -20.3% | 351,621 | $197.6M |
| Neuberger Berman Group LLC | 0.15% | Add +27.3% | 349,707 | $196.5M |
| Montrusco Bolton Investments Inc. | 2.83% | Add +93.4% | 342,120 | $186.7M |
| Bessemer Group Inc. | 0.28% | Add +2.5% | 319,265 | $179.4M |
| Clearbridge Investments, LLC | 0.15% | Add +5.3% | 308,477 | $173.3M |
| UBS Group AG | 0.03% | Add +7.1% | 305,167 | $171.5M |
| Pictet Asset Management Holding SA | 0.17% | Add +67.2% | 287,937 | $161.8M |
| FMR LLC | 0.01% | Add +12.6% | 282,976 | $159.0M |
| Raymond James Financial Inc. | 0.05% | Add +6.5% | 272,955 | $152.5M |
| Williams Jones Wealth Management, LLC. | 1.82% | Reduce -1.6% | 263,513 | $148.1M |
| Caisse de depot et placement du Quebec | 0.24% | Add +5.8% | 263,051 | $147.8M |
| Railway Pension Investments Ltd | 2.05% | Reduce -21.3% | 256,480 | $144.1M |
| TD Asset Management Inc | 0.11% | Reduce -11.7% | 236,531 | $132.9M |
| First Trust Advisors LP | 0.09% | Reduce -0.6% | 234,653 | $131.8M |
| Swiss National Bank | 0.08% | Add +6.9% | 234,380 | $131.7M |
| Los Angeles Capital Management LLC | 0.50% | Add +18.6% | 227,369 | $127.8M |
| Comgest Global Investors S.A.S. | 2.70% | Add +6.4% | 220,354 | $123.8M |
| Wells Fargo & Company | 0.02% | Add +1.6% | 208,847 | $117.3M |
| Allianz Asset Management GmbH | 0.13% | Reduce -4.0% | 207,403 | $116.5M |
| Alyeska Investment Group, L.P. | 0.32% | New | 203,274 | $114.2M |
| Russell Investments Group, Ltd. | 0.12% | Add +4.0% | 201,694 | $113.2M |
| Sumitomo Mitsui Trust Group, Inc. | 0.07% | Reduce -5.4% | 197,871 | $111.2M |
| Robeco Institutional Asset Management B.V. | 0.15% | Add +1.9% | 189,760 | $106.6M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.07% | Add +2.6% | 189,020 | $106.2M |
| Schroder Investment Management Group | 0.09% | Reduce -43.8% | 188,125 | $105.7M |
| Barclays PLC | 0.04% | Reduce -11.2% | 187,715 | $105.5M |
| Victory Capital Management Inc. | 0.07% | Reduce -10.8% | 183,237 | $103.0M |
| Envestnet Asset Management Inc. | 0.03% | Add +1.8% | 183,097 | $102.9M |
| Liontrust Investment Partners LLP | 1.70% | Add +17.6% | 177,337 | $99.6M |
| Vanguard Global Advisers, LLC | 0.05% | — | 174,862 | $98.3M |
| Epoch Investment Partners, Inc. | 0.59% | Reduce -10.8% | 174,602 | $98.1M |
| Rhumbline Advisers | 0.08% | Add +0.1% | 173,731 | $97.6M |
| KBC Group NV | 0.24% | Reduce -44.2% | 172,679 | $97.0M |
| Welch & Forbes LLC | 1.22% | Reduce -0.1% | 168,181 | $94.5M |
| Congress Asset Management Co. | 0.67% | Add +8.3% | 166,686 | $93.7M |
| HSBC Holdings PLC | 0.06% | Add +4.1% | 166,251 | $93.4M |
| American Capital Management Inc. | 5.01% | Reduce -8.6% | 166,056 | $93.3M |
| TimesSquare Capital Management, LLC | 1.56% | Reduce -2.1% | 163,763 | $92.0M |
| Federated Hermes, Inc. | 0.14% | Add +11.7% | 156,675 | $88.0M |
| California Public Employees Retirement System | 0.05% | Reduce -3.7% | 156,525 | $87.9M |
| Holocene Advisors, LP | 0.20% | Add +223.1% | 147,732 | $83.0M |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.07% | — | 139,492 | $78.4M |
| BNP Paribas Financial Markets | 0.05% | Reduce -35.0% | 138,726 | $77.9M |
| Ameriprise Financial Inc. | 0.02% | Reduce -24.1% | 134,296 | $75.4M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.13% | Add +37.2% | 133,891 | $75.2M |
| Westfield Capital Management Co. LP | 0.31% | Reduce -9.9% | 132,860 | $74.7M |
| Point72 Asset Management | 0.13% | Add +1053.9% | 129,284 | $72.6M |
| California State Teachers Retirement System | 0.07% | Reduce -2.2% | 122,654 | $68.9M |
| ProShare Advisors LLC | 0.10% | Reduce -16.8% | 122,618 | $68.9M |
| Loring Wolcott & Coolidge Fiduciary Advisors LLP | 0.69% | Reduce -1.4% | 122,304 | $68.9M |
| National Pension Service | 0.05% | Add +15.1% | 122,420 | $68.8M |
| Corient Private Wealth LP | 0.10% | Add +6.4% | 122,006 | $68.5M |
| Rathbones Group PLC | 0.27% | Add +11.6% | 121,511 | $68.3M |
| Bank Julius Baer & Co. Ltd, Zurich | 0.21% | Reduce -47.6% | 121,515 | $68.1M |
| Citigroup Inc. | 0.04% | Add +2.8% | 120,283 | $67.6M |
| TCW Group Inc. | 0.50% | Add +83.4% | 118,751 | $66.7M |
| Bank of Montreal | 0.03% | Reduce -11.7% | 118,194 | $66.4M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.11% | Add +1.3% | 115,579 | $64.9M |
| Alliancebernstein L.P. | 0.02% | Reduce -4.9% | 94,484 | $63.9M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.07% | Add +3.3% | 113,488 | $63.8M |
| Life Cycle Investment Partners Ltd | 0.39% | Add +54.6% | 109,478 | $61.5M |
| Brown Advisory Inc. | 0.10% | Add +0.4% | 108,049 | $60.7M |
"% of holder's portfolio" is IDXX's weight in each manager's 13F, not the share of Idexx Laboratories Inc. the manager owns.