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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 8,365,553 | $4.70B | 0.08% | −169,333−2.0% | Reduced |
| Vanguard Capital Management LLC | 5,182,507 | $2.91B | 0.07% | +5,182,507 | New |
| Vanguard Portfolio Management LLC | 3,910,863 | $2.20B | 0.11% | +3,910,863 | New |
| State Street Corp | 3,674,185 | $2.06B | 0.07% | +17,559+0.5% | Added |
| Invesco Ltd. | 3,349,677 | $1.88B | 0.18% | +53,500+1.6% | Added |
| Geode Capital Management, LLC | 2,660,999 | $1.50B | 0.09% | +77,060+3.0% | Added |
| Bamco Inc | 1,633,367 | $917.8M | 2.77% | −164,674−9.2% | Reduced |
| Bank of New York Mellon Corp | 1,504,532 | $845.4M | 0.16% | −119,937−7.4% | Reduced |
| Fundsmith LLPSuperinvestorFundsmith | 1,465,786 | $823.6M | 6.42% | −410,249−21.9% | Reduced |
| Morgan Stanley | 1,315,954 | $739.4M | 0.04% | −237,777−15.3% | Reduced |
| Blair William & Co | 946,336 | $531.7M | 1.52% | −55,039−5.5% | Reduced |
| Northern Trust Corp | 911,893 | $512.4M | 0.07% | −11,259−1.2% | Reduced |
| Principal Financial Group Inc | 881,189 | $495.2M | 0.26% | −87,757−9.1% | Reduced |
| UBS Asset Management Americas Inc | 871,789 | $489.8M | 0.10% | +11,902+1.4% | Added |
| Arrowstreet Capital, Limited Partnership | 838,839 | $471.3M | 0.26% | +288,471+52.4% | Added |
| Capital Research Global Investors | 781,345 | $439.0M | 0.07% | +173,591+28.6% | Added |
| JPMorgan Chase & Co | 779,882 | $434.5M | 0.03% | +106,654+15.8% | Added |
| Wellington Management Group LLP | 735,475 | $413.3M | 0.08% | −43,739−5.6% | Reduced |
| Goldman Sachs Group Inc | 716,921 | $402.8M | 0.05% | −115,268−13.9% | Reduced |
| Polen Capital Management LLC | 695,811 | $391.0M | 2.70% | −264,726−27.6% | Reduced |
| Franklin Resources Inc | 662,633 | $372.3M | 0.09% | +35,474+5.7% | Added |
| Legal & General Group Plc | 650,803 | $365.7M | 0.08% | −19,811−3.0% | Reduced |
| Price T Rowe Associates Inc | 638,063 | $358.5M | 0.04% | −314,160−33.0% | Reduced |
| Amundi | 610,779 | $343.2M | 0.09% | −7,964−1.3% | Reduced |
| Charles Schwab Investment Management Inc | 610,217 | $342.9M | 0.05% | +20,155+3.4% | Added |
| American Century Companies Inc | 599,931 | $337.1M | 0.17% | −29,003−4.6% | Reduced |
| Dimensional Fund Advisors LP | 573,332 | $322.1M | 0.07% | +23,582+4.3% | Added |
| Capital World Investors | 497,851 | $279.7M | 0.04% | +497,851 | New |
| Bank of America Corp | 488,017 | $274.2M | 0.02% | +659+0.1% | Added |
| Fundsmith Investment Services Ltd. | 481,586 | $270.6M | 6.14% | −72,273−13.0% | Reduced |
| Vanguard Fiduciary Trust Co | 460,656 | $258.8M | 0.07% | +460,656 | New |
| Nuveen, LLC | 445,804 | $250.5M | 0.07% | −20,326−4.4% | Reduced |
| AustralianSuper Pty Ltd | 443,022 | $248.9M | 1.30% | +142,825+47.6% | Added |
| Capital Counsel LLC | 420,195 | $236.1M | 10.04% | −6,848−1.6% | Reduced |
| Nomura Asset Management International Inc. | 399,376 | $224.4M | 0.38% | −32,683−7.6% | Reduced |
| Royal Bank of Canada | 391,704 | $220.1M | 0.04% | −6,619−1.7% | Reduced |
| Deutsche Bank AG | 388,813 | $218.5M | 0.07% | +31,274+8.7% | Added |
| CIBC Bancorp USA Inc. | 367,502 | $206.5M | 0.28% | +367,502 | New |
| William Blair Investment Management, LLC | 351,621 | $197.6M | 0.65% | −89,703−20.3% | Reduced |
| Neuberger Berman Group LLC | 349,707 | $196.5M | 0.15% | +74,910+27.3% | Added |
| Montrusco Bolton Investments Inc. | 342,120 | $186.7M | 2.83% | +165,188+93.4% | Added |
| Bessemer Group Inc | 319,265 | $179.4M | 0.28% | +7,916+2.5% | Added |
| Clearbridge Investments, LLC | 308,477 | $173.3M | 0.15% | +15,529+5.3% | Added |
| UBS Group AG | 305,167 | $171.5M | 0.03% | +20,215+7.1% | Added |
| Pictet Asset Management Holding SA | 287,937 | $161.8M | 0.17% | +115,698+67.2% | Added |
| FMR LLC | 282,976 | $159.0M | 0.01% | +31,569+12.6% | Added |
| Raymond James Financial Inc | 272,955 | $152.5M | 0.05% | +16,603+6.5% | Added |
| Williams Jones Wealth Management, LLC. | 263,513 | $148.1M | 1.82% | −4,252−1.6% | Reduced |
| Caisse de Depot Et Placement du Quebec | 263,051 | $147.8M | 0.24% | +14,350+5.8% | Added |
| Railway Pension Investments Ltd | 256,480 | $144.1M | 2.05% | −69,600−21.3% | Reduced |
| TD Asset Management Inc | 236,531 | $132.9M | 0.11% | −31,319−11.7% | Reduced |
| First Trust Advisors LP | 234,653 | $131.8M | 0.09% | −1,458−0.6% | Reduced |
| Swiss National Bank | 234,380 | $131.7M | 0.08% | +15,200+6.9% | Added |
| Los Angeles Capital Management LLC | 227,369 | $127.8M | 0.50% | +35,704+18.6% | Added |
| Comgest Global Investors S.A.S. | 220,354 | $123.8M | 2.70% | +13,277+6.4% | Added |
| Wells Fargo & Company | 208,847 | $117.3M | 0.02% | +3,360+1.6% | Added |
| Allianz Asset Management GmbH | 207,403 | $116.5M | 0.13% | −8,654−4.0% | Reduced |
| Alyeska Investment Group, L.P. | 203,274 | $114.2M | 0.32% | +203,274 | New |
| Russell Investments Group, Ltd. | 201,694 | $113.2M | 0.12% | +7,697+4.0% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 197,871 | $111.2M | 0.07% | −11,235−5.4% | Reduced |
| Robeco Institutional Asset Management B.V. | 189,760 | $106.6M | 0.15% | +3,633+2.0% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 189,020 | $106.2M | 0.07% | +4,852+2.6% | Added |
| Schroder Investment Management Group | 188,125 | $105.7M | 0.09% | −146,662−43.8% | Reduced |
| Barclays PLC | 187,715 | $105.5M | 0.04% | −23,723−11.2% | Reduced |
| Victory Capital Management Inc | 183,237 | $103.0M | 0.07% | −22,103−10.8% | Reduced |
| Envestnet Asset Management Inc | 183,097 | $102.9M | 0.03% | +3,198+1.8% | Added |
| Liontrust Investment Partners LLP | 177,337 | $99.6M | 1.70% | +26,557+17.6% | Added |
| Vanguard Global Advisers, LLC | 174,862 | $98.3M | 0.05% | +174,862 | New |
| Epoch Investment Partners, Inc. | 174,602 | $98.1M | 0.59% | −21,197−10.8% | Reduced |
| Rhumbline Advisers | 173,731 | $97.6M | 0.08% | +256+0.1% | Added |
| KBC Group NV | 172,679 | $97.0M | 0.24% | −136,701−44.2% | Reduced |
| Welch & Forbes LLC | 168,181 | $94.5M | 1.22% | −101−0.1% | Reduced |
| Congress Asset Management Co | 166,686 | $93.7M | 0.67% | +12,778+8.3% | Added |
| HSBC Holdings PLC | 166,251 | $93.4M | 0.06% | +6,616+4.1% | Added |
| American Capital Management Inc | 166,056 | $93.3M | 5.01% | −15,689−8.6% | Reduced |
| TimesSquare Capital Management, LLC | 163,763 | $92.0M | 1.56% | −3,488−2.1% | Reduced |
| Federated Hermes, Inc. | 156,675 | $88.0M | 0.14% | +16,393+11.7% | Added |
| California Public Employees Retirement System | 156,525 | $87.9M | 0.05% | −6,064−3.7% | Reduced |
| Holocene Advisors, LP | 147,732 | $83.0M | 0.20% | +102,011+223.1% | Added |
| Vanguard Asset Management, Ltd | 139,492 | $78.4M | 0.07% | +139,492 | New |
| BNP Paribas Arbitrage, SA | 138,726 | $77.9M | 0.05% | −74,836−35.0% | Reduced |
| Ameriprise Financial Inc | 134,296 | $75.4M | 0.02% | −42,637−24.1% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 133,891 | $75.2M | 0.12% | +36,281+37.2% | Added |
| Westfield Capital Management Co LP | 132,860 | $74.7M | 0.31% | −14,587−9.9% | Reduced |
| Point72 Asset Management, L.P. | 129,284 | $72.6M | 0.13% | +118,080+1,053.9% | Added |
| California State Teachers Retirement System | 122,654 | $68.9M | 0.07% | −2,748−2.2% | Reduced |
| ProShare Advisors LLC | 122,618 | $68.9M | 0.10% | −24,711−16.8% | Reduced |
| Loring Wolcott & Coolidge Fiduciary Advisors LLP | 122,304 | $68.9M | 0.69% | −1,741−1.4% | Reduced |
| National Pension Service | 122,420 | $68.8M | 0.05% | +16,076+15.1% | Added |
| CI Private Wealth, LLC | 122,006 | $68.5M | 0.10% | +7,381+6.4% | Added |
| Rathbone Brothers plc | 121,511 | $68.3M | 0.27% | +12,639+11.6% | Added |
| Bank Julius Baer & Co. Ltd, Zurich | 121,515 | $68.1M | 0.21% | −110,293−47.6% | Reduced |
| Citigroup Inc | 120,283 | $67.6M | 0.04% | +3,276+2.8% | Added |
| TCW Group Inc | 118,751 | $66.7M | 0.50% | +54,007+83.4% | Added |
| Bank of Montreal | 118,194 | $66.4M | 0.03% | −15,610−11.7% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 115,579 | $64.9M | 0.11% | +1,425+1.2% | Added |
| Alliancebernstein L.P. | 94,484 | $63.9M | 0.02% | −4,898−4.9% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 113,488 | $63.8M | 0.07% | +3,627+3.3% | Added |
| Life Cycle Investment Partners Ltd | 109,478 | $61.5M | 0.39% | +38,653+54.6% | Added |
| Brown Advisory Inc | 108,049 | $60.7M | 0.10% | +477+0.4% | Added |