IDEXX Laboratories Inc
IDXX- Exchange
- Nasdaq
- Industry
- In Vitro & In Vivo Diagnostic Substances
- SEC CIK
- 0000874716
In the last 90 days, IDEXX Laboratories Inc insiders filed 0 open-market purchases and 1 sale; 1,306 institutions reported holding it in 13F filings for Q2 2026, worth $39.1B in total; 3 superinvestors hold it, including Fundsmith and Weitz Investment Management.
13F holders, Q1 2026
Institutional positions in IDEXX Laboratories Inc as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 1,318
- −46 vs. Q4 2025
- Shares held
- 73.3M
- +1.79M (+2.5%) vs. Q4 2025
- Total value
- $41.2B
- −$1.72B (−4.0%) vs. Q4 2025
- New holders
- 125
- 435 more added
- Sold out
- 171
- 517 more reduced
21 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting IDXX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 1,306 | $39.1B |
| Q1 2026 | 1,318 | $41.2B |
| Q4 2025 | 1,385 | $50.3B |
| Q3 2025 | 1,302 | $46.1B |
| Q2 2025 | 1,234 | $40.0B |
| Q1 2025 | 1,143 | $31.1B |
| Q4 2024 | 1,124 | $29.8B |
| Q3 2024 | 1,117 | $36.7B |
| Q2 2024 | 1,110 | $36.4B |
| Q1 2024 | 1,147 | $39.1B |
| Q4 2023 | 1,155 | $40.5B |
| Q3 2023 | 1,061 | $32.4B |
| Q2 2023 | 1,069 | $36.7B |
| Q1 2023 | 1,058 | $36.4B |
| Q4 2022 | 1,001 | $30.0B |
| Q3 2022 | 925 | $24.0B |
| Q2 2022 | 959 | $25.9B |
| Q1 2022 | 1,036 | $39.7B |
| Q4 2021 | 1,110 | $47.1B |
| Q3 2021 | 1,063 | $44.6B |
| Q2 2021 | 1,037 | $46.1B |
| Q1 2021 | 1,015 | $35.6B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding IDEXX Laboratories Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Assenagon Asset Management S.A. | 85,835 | $48.2M | 0.08% | +10,226+13.5% | Added |
| Citadel Advisors LLC | 87,566 | $49.2M | 0.03% | +69,723+390.8% | Added |
| Lord, Abbett & Co. LLC | 88,247 | $49.6M | 0.16% | −98,762−52.8% | Reduced |
| Pictet & Cie (Europe) SA | 89,000 | $50.0M | 1.07% | 00.0% | Unchanged |
| Bellevue Group AG | 89,131 | $50.1M | 1.19% | −5,408−5.7% | Reduced |
| Freestone Grove Partners LP | 90,516 | $50.9M | 0.37% | +90,516 | New |
| Davis R M Inc | 91,963 | $51.7M | 0.92% | −1,520−1.6% | Reduced |
| Standard Life Aberdeen plc | 93,297 | $52.4M | 0.08% | +3,314+3.7% | Added |
| Voya Investment Management LLC | 93,986 | $52.8M | 0.05% | −23,203−19.8% | Reduced |
| SEI Investments Co | 94,486 | $53.1M | 0.05% | −41,390−30.5% | Reduced |
| AQR Capital Management LLC | 96,726 | $53.8M | 0.02% | −18,049−15.7% | Reduced |
| Worldquant Millennium Advisors LLC | 98,355 | $55.3M | 0.21% | +98,355 | New |
| Quantinno Capital Management LP | 99,794 | $56.1M | 0.09% | +44,875+81.7% | Added |
| Squarepoint Ops LLC | 100,309 | $56.4M | 0.12% | +42,885+74.7% | Added |
| Kayne Anderson Rudnick Investment Management LLC | 100,840 | $56.7M | 0.17% | −12,267−10.8% | Reduced |
| Stephens Investment Management Group LLC | 102,097 | $57.4M | 0.79% | +4,715+4.8% | Added |
| Bradley Foster & Sargent Inc | 103,654 | $58.2M | 0.90% | −1,039−1.0% | Reduced |
| LGT Capital Partners Ltd. | 108,016 | $60.7M | 3.22% | +2,018+1.9% | Added |
| Brown Advisory Inc | 108,049 | $60.7M | 0.10% | +477+0.4% | Added |
| Life Cycle Investment Partners Ltd | 109,478 | $61.5M | 0.39% | +38,653+54.6% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 113,488 | $63.8M | 0.07% | +3,627+3.3% | Added |
| Alliancebernstein L.P. | 94,484 | $63.9M | 0.02% | −4,898−4.9% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 115,579 | $64.9M | 0.11% | +1,425+1.2% | Added |
| Bank of Montreal | 118,194 | $66.4M | 0.03% | −15,610−11.7% | Reduced |
| TCW Group Inc | 118,751 | $66.7M | 0.50% | +54,007+83.4% | Added |
| Citigroup Inc | 120,283 | $67.6M | 0.04% | +3,276+2.8% | Added |
| Bank Julius Baer & Co. Ltd, Zurich | 121,515 | $68.1M | 0.21% | −110,293−47.6% | Reduced |
| Rathbone Brothers plc | 121,511 | $68.3M | 0.27% | +12,639+11.6% | Added |
| CI Private Wealth, LLC | 122,006 | $68.5M | 0.10% | +7,381+6.4% | Added |
| National Pension Service | 122,420 | $68.8M | 0.05% | +16,076+15.1% | Added |
| Loring Wolcott & Coolidge Fiduciary Advisors LLP | 122,304 | $68.9M | 0.69% | −1,741−1.4% | Reduced |
| ProShare Advisors LLC | 122,618 | $68.9M | 0.10% | −24,711−16.8% | Reduced |
| California State Teachers Retirement System | 122,654 | $68.9M | 0.07% | −2,748−2.2% | Reduced |
| Point72 Asset Management, L.P. | 129,284 | $72.6M | 0.13% | +118,080+1,053.9% | Added |
| Westfield Capital Management Co LP | 132,860 | $74.7M | 0.31% | −14,587−9.9% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 133,891 | $75.2M | 0.12% | +36,281+37.2% | Added |
| Ameriprise Financial Inc | 134,296 | $75.4M | 0.02% | −42,637−24.1% | Reduced |
| BNP Paribas Arbitrage, SA | 138,726 | $77.9M | 0.05% | −74,836−35.0% | Reduced |
| Vanguard Asset Management, Ltd | 139,492 | $78.4M | 0.07% | +139,492 | New |
| Holocene Advisors, LP | 147,732 | $83.0M | 0.20% | +102,011+223.1% | Added |
| California Public Employees Retirement System | 156,525 | $87.9M | 0.05% | −6,064−3.7% | Reduced |
| Federated Hermes, Inc. | 156,675 | $88.0M | 0.14% | +16,393+11.7% | Added |
| TimesSquare Capital Management, LLC | 163,763 | $92.0M | 1.56% | −3,488−2.1% | Reduced |
| American Capital Management Inc | 166,056 | $93.3M | 5.01% | −15,689−8.6% | Reduced |
| HSBC Holdings PLC | 166,251 | $93.4M | 0.06% | +6,616+4.1% | Added |
| Congress Asset Management Co | 166,686 | $93.7M | 0.67% | +12,778+8.3% | Added |
| Welch & Forbes LLC | 168,181 | $94.5M | 1.22% | −101−0.1% | Reduced |
| KBC Group NV | 172,679 | $97.0M | 0.24% | −136,701−44.2% | Reduced |
| Rhumbline Advisers | 173,731 | $97.6M | 0.08% | +256+0.1% | Added |
| Epoch Investment Partners, Inc. | 174,602 | $98.1M | 0.59% | −21,197−10.8% | Reduced |
| Vanguard Global Advisers, LLC | 174,862 | $98.3M | 0.05% | +174,862 | New |
| Liontrust Investment Partners LLP | 177,337 | $99.6M | 1.70% | +26,557+17.6% | Added |
| Envestnet Asset Management Inc | 183,097 | $102.9M | 0.03% | +3,198+1.8% | Added |
| Victory Capital Management Inc | 183,237 | $103.0M | 0.07% | −22,103−10.8% | Reduced |
| Barclays PLC | 187,715 | $105.5M | 0.04% | −23,723−11.2% | Reduced |
| Schroder Investment Management Group | 188,125 | $105.7M | 0.09% | −146,662−43.8% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 189,020 | $106.2M | 0.07% | +4,852+2.6% | Added |
| Robeco Institutional Asset Management B.V. | 189,760 | $106.6M | 0.15% | +3,633+2.0% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 197,871 | $111.2M | 0.07% | −11,235−5.4% | Reduced |
| Russell Investments Group, Ltd. | 201,694 | $113.2M | 0.12% | +7,697+4.0% | Added |
| Alyeska Investment Group, L.P. | 203,274 | $114.2M | 0.32% | +203,274 | New |
| Allianz Asset Management GmbH | 207,403 | $116.5M | 0.13% | −8,654−4.0% | Reduced |
| Wells Fargo & Company | 208,847 | $117.3M | 0.02% | +3,360+1.6% | Added |
| Comgest Global Investors S.A.S. | 220,354 | $123.8M | 2.70% | +13,277+6.4% | Added |
| Los Angeles Capital Management LLC | 227,369 | $127.8M | 0.50% | +35,704+18.6% | Added |
| Swiss National Bank | 234,380 | $131.7M | 0.08% | +15,200+6.9% | Added |
| First Trust Advisors LP | 234,653 | $131.8M | 0.09% | −1,458−0.6% | Reduced |
| TD Asset Management Inc | 236,531 | $132.9M | 0.11% | −31,319−11.7% | Reduced |
| Railway Pension Investments Ltd | 256,480 | $144.1M | 2.05% | −69,600−21.3% | Reduced |
| Caisse de Depot Et Placement du Quebec | 263,051 | $147.8M | 0.24% | +14,350+5.8% | Added |
| Williams Jones Wealth Management, LLC. | 263,513 | $148.1M | 1.82% | −4,252−1.6% | Reduced |
| Raymond James Financial Inc | 272,955 | $152.5M | 0.05% | +16,603+6.5% | Added |
| FMR LLC | 282,976 | $159.0M | 0.01% | +31,569+12.6% | Added |
| Pictet Asset Management Holding SA | 287,937 | $161.8M | 0.17% | +115,698+67.2% | Added |
| UBS Group AG | 305,167 | $171.5M | 0.03% | +20,215+7.1% | Added |
| Clearbridge Investments, LLC | 308,477 | $173.3M | 0.15% | +15,529+5.3% | Added |
| Bessemer Group Inc | 319,265 | $179.4M | 0.28% | +7,916+2.5% | Added |
| Montrusco Bolton Investments Inc. | 342,120 | $186.7M | 2.83% | +165,188+93.4% | Added |
| Neuberger Berman Group LLC | 349,707 | $196.5M | 0.15% | +74,910+27.3% | Added |
| William Blair Investment Management, LLC | 351,621 | $197.6M | 0.65% | −89,703−20.3% | Reduced |
| CIBC Bancorp USA Inc. | 367,502 | $206.5M | 0.28% | +367,502 | New |
| Deutsche Bank AG | 388,813 | $218.5M | 0.07% | +31,274+8.7% | Added |
| Royal Bank of Canada | 391,704 | $220.1M | 0.04% | −6,619−1.7% | Reduced |
| Nomura Asset Management International Inc. | 399,376 | $224.4M | 0.38% | −32,683−7.6% | Reduced |
| Capital Counsel LLC | 420,195 | $236.1M | 10.04% | −6,848−1.6% | Reduced |
| AustralianSuper Pty Ltd | 443,022 | $248.9M | 1.30% | +142,825+47.6% | Added |
| Nuveen, LLC | 445,804 | $250.5M | 0.07% | −20,326−4.4% | Reduced |
| Vanguard Fiduciary Trust Co | 460,656 | $258.8M | 0.07% | +460,656 | New |
| Fundsmith Investment Services Ltd. | 481,586 | $270.6M | 6.14% | −72,273−13.0% | Reduced |
| Bank of America Corp | 488,017 | $274.2M | 0.02% | +659+0.1% | Added |
| Capital World Investors | 497,851 | $279.7M | 0.04% | +497,851 | New |
| Dimensional Fund Advisors LP | 573,332 | $322.1M | 0.07% | +23,582+4.3% | Added |
| American Century Companies Inc | 599,931 | $337.1M | 0.17% | −29,003−4.6% | Reduced |
| Charles Schwab Investment Management Inc | 610,217 | $342.9M | 0.05% | +20,155+3.4% | Added |
| Amundi | 610,779 | $343.2M | 0.09% | −7,964−1.3% | Reduced |
| Price T Rowe Associates Inc | 638,063 | $358.5M | 0.04% | −314,160−33.0% | Reduced |
| Legal & General Group Plc | 650,803 | $365.7M | 0.08% | −19,811−3.0% | Reduced |
| Franklin Resources Inc | 662,633 | $372.3M | 0.09% | +35,474+5.7% | Added |
| Polen Capital Management LLC | 695,811 | $391.0M | 2.70% | −264,726−27.6% | Reduced |
| Goldman Sachs Group Inc | 716,921 | $402.8M | 0.05% | −115,268−13.9% | Reduced |