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, Q3 2025
Institutional positions in IDEXX Laboratories Inc as of Sep 30, 2025. 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
- 1,302
- +88 vs. Q2 2025
- Shares held
- 72.2M
- −1.78M (−2.4%) vs. Q2 2025
- Total value
- $46.1B
- +$6.43B (+16.2%) vs. Q2 2025
- New holders
- 162
- 417 more added
- Sold out
- 74
- 490 more reduced
20 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding IDEXX Laboratories Inc; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Toronto Dominion Bank | 32,154 | $20.5M | 0.04% | −4,466−12.2% | Reduced |
| AXA Investment Managers S.A. | 32,588 | $20.8M | 0.06% | +32,588 | New |
| Lountzis Asset Management, LLC | 32,708 | $20.9M | 6.82% | 00.0% | Unchanged |
| Jane Street Group, LLC | 32,795 | $21.0M | 0.02% | +19,566+147.9% | Added |
| Parnassus Investments | 32,877 | $21.0M | 0.05% | −360−1.1% | Reduced |
| KLP Kapitalforvaltning AS | 33,200 | $21.2M | 0.08% | −6,400−16.2% | Reduced |
| Creative Planning | 33,269 | $21.3M | 0.02% | +4,201+14.5% | Added |
| Handelsbanken Fonder AB | 33,595 | $21.5M | 0.07% | +116+0.3% | Added |
| Janney Montgomery Scott LLC | 33,797 | $21.6M | 0.05% | −1,530−4.3% | Reduced |
| TCG Advisory Services, LLC | 34,835 | $22.3M | 0.82% | −4,639−11.8% | Reduced |
| Academy Capital Management Inc | 35,452 | $22.6M | 3.23% | −310−0.9% | Reduced |
| Teacher Retirement System of Texas | 35,466 | $22.7M | 0.09% | +2,344+7.1% | Added |
| Ninety One UK Ltd | 35,562 | $22.7M | 0.05% | −22,366−38.6% | Reduced |
| Adage Capital Partners GP, L.L.C. | 35,670 | $22.8M | 0.04% | −23,531−39.7% | Reduced |
| GW Henssler & Associates Ltd | 35,832 | $22.9M | 1.14% | −559−1.5% | Reduced |
| Toroso Investments, LLC | 36,101 | $23.1M | 0.10% | +25,812+250.9% | Added |
| RMB Capital Management, LLC | 36,272 | $23.2M | 0.43% | +4,627+14.6% | Added |
| Treasurer of the State of North Carolina | 36,280 | $23.2M | 0.07% | −1,414−3.8% | Reduced |
| Marble Harbor Investment Counsel, LLC | 36,655 | $23.4M | 2.45% | −2,263−5.8% | Reduced |
| Franklin Street Advisors Inc | 36,714 | $23.5M | 1.35% | +1,583+4.5% | Added |
| Stifel Financial Corp | 37,025 | $23.7M | 0.02% | +1,621+4.6% | Added |
| Mirae Asset Global Investments Co., Ltd. | 37,209 | $23.8M | 0.07% | +4,905+15.2% | Added |
| Swedbank AB | 37,832 | $24.2M | 0.02% | +2,107+5.9% | Added |
| NS Partners Ltd | 37,910 | $24.2M | 0.94% | −84−0.2% | Reduced |
| Nisa Investment Advisors, LLC | 38,254 | $24.4M | 0.09% | −1,912−4.8% | Reduced |
| Mediolanum International Funds Ltd | 38,761 | $24.4M | 0.26% | +4,909+14.5% | Added |
| Forsta Ap-Fonden | 38,400 | $24.5M | 0.15% | +5,400+16.4% | Added |
| Capital Investment Services of America, Inc. | 39,761 | $25.4M | 2.26% | −101−0.3% | Reduced |
| LPL Financial LLC | 39,823 | $25.4M | 0.01% | +3,731+10.3% | Added |
| Danske Bank A/S | 39,955 | $25.5M | 0.06% | −1,432−3.5% | Reduced |
| Glenview Trust Co | 40,729 | $26.0M | 0.41% | +2,312+6.0% | Added |
| Chevy Chase Trust Holdings, Inc. | 40,845 | $26.1M | 0.07% | −1,636−3.9% | Reduced |
| Geneva Capital Management LLC | 41,967 | $26.8M | 0.46% | −2,052−4.7% | Reduced |
| Villere St Denis J & Co LLC | 42,204 | $27.0M | 2.59% | −14,037−25.0% | Reduced |
| The PNC Financial Services Group, Inc. | 42,697 | $27.3M | 0.02% | −224−0.5% | Reduced |
| Quantinno Capital Management LP | 43,143 | $27.6M | 0.08% | +18,365+74.1% | Added |
| Waycross Partners, LLC | 43,471 | $27.8M | 2.39% | +961+2.3% | Added |
| DF Dent & Co Inc | 44,447 | $28.4M | 0.37% | −1,769−3.8% | Reduced |
| BI Asset Management Fondsmaeglerselskab A/S | 45,029 | $28.8M | 0.26% | +17,848+65.7% | Added |
| SG Americas Securities, LLC | 45,033 | $28.8M | 0.11% | −7,247−13.9% | Reduced |
| Allspring Global Investments Holdings, LLC | 46,489 | $28.8M | 0.05% | +42,816+1,165.7% | Added |
| Ensign Peak Advisors, Inc | 45,330 | $29.0M | 0.05% | +5,080+12.6% | Added |
| Factory Mutual Insurance Co | 45,800 | $29.3M | 0.28% | −15,300−25.0% | Reduced |
| Prudential PLC | 46,202 | $29.5M | 0.22% | −3,556−7.1% | Reduced |
| Natixis Advisors, L.P. | 46,245 | $29.5M | 0.04% | −1,163−2.5% | Reduced |
| Howland Capital Management LLC | 46,651 | $29.8M | 1.14% | −449−1.0% | Reduced |
| National Bank of Canada | 46,708 | $29.8M | 0.03% | −33,446−41.7% | Reduced |
| Korea Investment CORP | 47,264 | $30.2M | 0.06% | −16,049−25.3% | Reduced |
| Gotham Asset Management, LLC | 48,643 | $31.1M | 0.14% | +13,986+40.4% | Added |
| Investment Management Corp of Ontario | 48,795 | $31.2M | 0.47% | +44,376+1,004.2% | Added |
| Pinebridge Investments, L.P. | 49,500 | $31.6M | 0.24% | −37,606−43.2% | Reduced |
| Schaper Benz & Wise Investment Counsel Inc | 49,555 | $31.7M | 2.35% | −618−1.2% | Reduced |
| Baird Financial Group, Inc. | 50,526 | $32.3M | 0.05% | +123+0.2% | Added |
| Assetmark, Inc | 51,251 | $32.7M | 0.07% | −13,534−20.9% | Reduced |
| State of Wisconsin Investment Board | 51,687 | $33.0M | 0.08% | +3,318+6.9% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 51,868 | $33.1M | 0.05% | −6,186−10.7% | Reduced |
| Colony Group, LLC | 51,918 | $33.2M | 0.05% | +724+1.4% | Added |
| Biondo Investment Advisors, LLC | 52,269 | $33.4M | 4.18% | −718−1.4% | Reduced |
| Harvey Investment Co LLC | 52,399 | $33.5M | 3.57% | −244−0.5% | Reduced |
| Nomura Asset Management Co Ltd | 53,102 | $33.9M | 0.09% | −7,459−12.3% | Reduced |
| Rockefeller Capital Management L.P. | 53,753 | $34.3M | 0.07% | −1,072−2.0% | Reduced |
| DekaBank Deutsche Girozentrale | 54,792 | $34.5M | 0.06% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 54,596 | $34.9M | 0.03% | +577+1.1% | Added |
| Raiffeisen Bank International AG | 55,617 | $35.1M | 0.47% | −11,831−17.5% | Reduced |
| Asset Management One Co.,Ltd. | 55,837 | $35.7M | 0.10% | +217+0.4% | Added |
| Assenagon Asset Management S.A. | 55,868 | $35.7M | 0.05% | −6,863−10.9% | Reduced |
| Beacon Investment Advisory Services, Inc. | 56,241 | $35.9M | 1.51% | +7,616+15.7% | Added |
| Vantage Investment Partners, LLC | 56,707 | $36.2M | 2.48% | −8,058−12.4% | Reduced |
| Weitz Investment Management, Inc.SuperinvestorWeitz Investment Management | 56,800 | $36.3M | 1.97% | −3,500−5.8% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 59,590 | $38.1M | 0.08% | −15,176−20.3% | Reduced |
| New York State Common Retirement Fund | 60,225 | $38.5M | 0.05% | +3,820+6.8% | Added |
| Thrivent Financial for Lutherans | 60,538 | $38.7M | 0.08% | −29,268−32.6% | Reduced |
| Aware Super Pty Ltd as trustee of Aware Super | 62,291 | $39.8M | 0.55% | 00.0% | Unchanged |
| Millennium Management LLC | 63,519 | $40.6M | 0.03% | −15,259−19.4% | Reduced |
| New York State Teachers Retirement System | 67,349 | $43.0M | 0.08% | −268−0.4% | Reduced |
| Lord, Abbett & Co. LLC | 67,827 | $43.3M | 0.13% | +51,899+325.8% | Added |
| Aviva PLC | 68,282 | $43.6M | 0.08% | +6,783+11.0% | Added |
| BLI - Banque de Luxembourg Investments | 69,823 | $44.1M | 1.28% | −29,077−29.4% | Reduced |
| Local Pensions Partnership Investment Ltd | 72,326 | $46.2M | 0.79% | −3,500−4.6% | Reduced |
| Allianz Asset Management GmbH | 74,090 | $47.3M | 0.06% | −52,200−41.3% | Reduced |
| State Board of Administration of Florida Retirement System | 75,749 | $48.4M | 0.08% | −5,073−6.3% | Reduced |
| Great West Life Assurance Co | 77,255 | $48.7M | 0.07% | +2,520+3.4% | Added |
| Bellevue Group AG | 76,587 | $48.9M | 1.02% | +39+0.1% | Added |
| Virginia Retirement Systems Et Al | 76,808 | $49.1M | 0.32% | +17,500+29.5% | Added |
| Quantum Capital Management, LLC | 77,825 | $49.7M | 5.45% | −26,602−25.5% | Reduced |
| Lazard Freres Gestion S.A.S. | 78,699 | $50.3M | 0.96% | −12,205−13.4% | Reduced |
| Premier Fund Managers Ltd | 83,102 | $52.4M | 2.15% | −63,026−43.1% | Reduced |
| Mogy Joel R Investment Counsel Inc | 85,273 | $54.5M | 2.98% | +92+0.1% | Added |
| Chicago Capital, LLC | 85,796 | $54.8M | 1.35% | −526−0.6% | Reduced |
| Pictet & Cie (Europe) SA | 89,000 | $56.9M | 1.14% | 00.0% | Unchanged |
| Royal London Asset Management Ltd | 90,153 | $57.6M | 0.12% | −826−0.9% | Reduced |
| Standard Life Aberdeen plc | 91,263 | $58.3M | 0.09% | −1,374−1.5% | Reduced |
| Westfield Capital Management Co LP | 94,129 | $60.1M | 0.25% | +94,129 | New |
| Manitou Investment Management Ltd. | 95,077 | $60.7M | 10.60% | −410−0.4% | Reduced |
| Riverbridge Partners LLC | 95,433 | $61.0M | 1.03% | −3,897−3.9% | Reduced |
| Davis R M Inc | 95,588 | $61.1M | 1.07% | −5,775−5.7% | Reduced |
| Stephens Investment Management Group LLC | 95,601 | $61.1M | 0.79% | −7,752−7.5% | Reduced |
| AustralianSuper Pty Ltd | 95,890 | $61.3M | 0.29% | +77,438+419.7% | Added |
| Alliancebernstein L.P. | 99,111 | $63.3M | 0.02% | −9,687−8.9% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 100,907 | $64.4M | 0.17% | +1,080+1.1% | Added |