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 |
|---|---|---|---|---|---|
| Mackenzie Financial Corp | 103,734 | $66.3M | 0.08% | −45,788−30.6% | Reduced |
| SEI Investments Co | 103,396 | $66.1M | 0.07% | −17,191−14.3% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 100,907 | $64.4M | 0.17% | +1,080+1.1% | Added |
| Alliancebernstein L.P. | 99,111 | $63.3M | 0.02% | −9,687−8.9% | Reduced |
| AustralianSuper Pty Ltd | 95,890 | $61.3M | 0.29% | +77,438+419.7% | Added |
| Stephens Investment Management Group LLC | 95,601 | $61.1M | 0.79% | −7,752−7.5% | Reduced |
| Davis R M Inc | 95,588 | $61.1M | 1.07% | −5,775−5.7% | Reduced |
| Riverbridge Partners LLC | 95,433 | $61.0M | 1.03% | −3,897−3.9% | Reduced |
| Manitou Investment Management Ltd. | 95,077 | $60.7M | 10.60% | −410−0.4% | Reduced |
| Westfield Capital Management Co LP | 94,129 | $60.1M | 0.25% | +94,129 | New |
| Standard Life Aberdeen plc | 91,263 | $58.3M | 0.09% | −1,374−1.5% | Reduced |
| Royal London Asset Management Ltd | 90,153 | $57.6M | 0.12% | −826−0.9% | Reduced |
| Pictet & Cie (Europe) SA | 89,000 | $56.9M | 1.14% | 00.0% | Unchanged |
| Chicago Capital, LLC | 85,796 | $54.8M | 1.35% | −526−0.6% | Reduced |
| Mogy Joel R Investment Counsel Inc | 85,273 | $54.5M | 2.98% | +92+0.1% | Added |
| Premier Fund Managers Ltd | 83,102 | $52.4M | 2.15% | −63,026−43.1% | Reduced |
| Lazard Freres Gestion S.A.S. | 78,699 | $50.3M | 0.96% | −12,205−13.4% | Reduced |
| Quantum Capital Management, LLC | 77,825 | $49.7M | 5.45% | −26,602−25.5% | Reduced |
| Virginia Retirement Systems Et Al | 76,808 | $49.1M | 0.32% | +17,500+29.5% | Added |
| Bellevue Group AG | 76,587 | $48.9M | 1.02% | +39+0.1% | Added |
| Great West Life Assurance Co | 77,255 | $48.7M | 0.07% | +2,520+3.4% | Added |
| State Board of Administration of Florida Retirement System | 75,749 | $48.4M | 0.08% | −5,073−6.3% | Reduced |
| Allianz Asset Management GmbH | 74,090 | $47.3M | 0.06% | −52,200−41.3% | Reduced |
| Local Pensions Partnership Investment Ltd | 72,326 | $46.2M | 0.79% | −3,500−4.6% | Reduced |
| BLI - Banque de Luxembourg Investments | 69,823 | $44.1M | 1.28% | −29,077−29.4% | Reduced |
| Aviva PLC | 68,282 | $43.6M | 0.08% | +6,783+11.0% | Added |
| Lord, Abbett & Co. LLC | 67,827 | $43.3M | 0.13% | +51,899+325.8% | Added |
| New York State Teachers Retirement System | 67,349 | $43.0M | 0.08% | −268−0.4% | Reduced |
| Millennium Management LLC | 63,519 | $40.6M | 0.03% | −15,259−19.4% | Reduced |
| Aware Super Pty Ltd as trustee of Aware Super | 62,291 | $39.8M | 0.55% | 00.0% | Unchanged |
| Thrivent Financial for Lutherans | 60,538 | $38.7M | 0.08% | −29,268−32.6% | Reduced |
| New York State Common Retirement Fund | 60,225 | $38.5M | 0.05% | +3,820+6.8% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 59,590 | $38.1M | 0.08% | −15,176−20.3% | Reduced |
| Weitz Investment Management, Inc.SuperinvestorWeitz Investment Management | 56,800 | $36.3M | 1.97% | −3,500−5.8% | Reduced |
| Vantage Investment Partners, LLC | 56,707 | $36.2M | 2.48% | −8,058−12.4% | Reduced |
| Beacon Investment Advisory Services, Inc. | 56,241 | $35.9M | 1.51% | +7,616+15.7% | Added |
| Assenagon Asset Management S.A. | 55,868 | $35.7M | 0.05% | −6,863−10.9% | Reduced |
| Asset Management One Co.,Ltd. | 55,837 | $35.7M | 0.10% | +217+0.4% | Added |
| Raiffeisen Bank International AG | 55,617 | $35.1M | 0.47% | −11,831−17.5% | Reduced |
| Manufacturers Life Insurance Company, The | 54,596 | $34.9M | 0.03% | +577+1.1% | Added |
| DekaBank Deutsche Girozentrale | 54,792 | $34.5M | 0.06% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 53,753 | $34.3M | 0.07% | −1,072−2.0% | Reduced |
| Nomura Asset Management Co Ltd | 53,102 | $33.9M | 0.09% | −7,459−12.3% | Reduced |
| Harvey Investment Co LLC | 52,399 | $33.5M | 3.57% | −244−0.5% | Reduced |
| Biondo Investment Advisors, LLC | 52,269 | $33.4M | 4.18% | −718−1.4% | Reduced |
| Colony Group, LLC | 51,918 | $33.2M | 0.05% | +724+1.4% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 51,868 | $33.1M | 0.05% | −6,186−10.7% | Reduced |
| State of Wisconsin Investment Board | 51,687 | $33.0M | 0.08% | +3,318+6.9% | Added |
| Assetmark, Inc | 51,251 | $32.7M | 0.07% | −13,534−20.9% | Reduced |
| Baird Financial Group, Inc. | 50,526 | $32.3M | 0.05% | +123+0.2% | Added |
| Schaper Benz & Wise Investment Counsel Inc | 49,555 | $31.7M | 2.35% | −618−1.2% | Reduced |
| Pinebridge Investments, L.P. | 49,500 | $31.6M | 0.24% | −37,606−43.2% | Reduced |
| Investment Management Corp of Ontario | 48,795 | $31.2M | 0.47% | +44,376+1,004.2% | Added |
| Gotham Asset Management, LLC | 48,643 | $31.1M | 0.14% | +13,986+40.4% | Added |
| Korea Investment CORP | 47,264 | $30.2M | 0.06% | −16,049−25.3% | Reduced |
| National Bank of Canada | 46,708 | $29.8M | 0.03% | −33,446−41.7% | Reduced |
| Howland Capital Management LLC | 46,651 | $29.8M | 1.14% | −449−1.0% | Reduced |
| Natixis Advisors, L.P. | 46,245 | $29.5M | 0.04% | −1,163−2.5% | Reduced |
| Prudential PLC | 46,202 | $29.5M | 0.22% | −3,556−7.1% | Reduced |
| Factory Mutual Insurance Co | 45,800 | $29.3M | 0.28% | −15,300−25.0% | Reduced |
| Ensign Peak Advisors, Inc | 45,330 | $29.0M | 0.05% | +5,080+12.6% | Added |
| Allspring Global Investments Holdings, LLC | 46,489 | $28.8M | 0.05% | +42,816+1,165.7% | Added |
| SG Americas Securities, LLC | 45,033 | $28.8M | 0.11% | −7,247−13.9% | Reduced |
| BI Asset Management Fondsmaeglerselskab A/S | 45,029 | $28.8M | 0.26% | +17,848+65.7% | Added |
| DF Dent & Co Inc | 44,447 | $28.4M | 0.37% | −1,769−3.8% | Reduced |
| Waycross Partners, LLC | 43,471 | $27.8M | 2.39% | +961+2.3% | Added |
| Quantinno Capital Management LP | 43,143 | $27.6M | 0.08% | +18,365+74.1% | Added |
| The PNC Financial Services Group, Inc. | 42,697 | $27.3M | 0.02% | −224−0.5% | Reduced |
| Villere St Denis J & Co LLC | 42,204 | $27.0M | 2.59% | −14,037−25.0% | Reduced |
| Geneva Capital Management LLC | 41,967 | $26.8M | 0.46% | −2,052−4.7% | Reduced |
| Chevy Chase Trust Holdings, Inc. | 40,845 | $26.1M | 0.07% | −1,636−3.9% | Reduced |
| Glenview Trust Co | 40,729 | $26.0M | 0.41% | +2,312+6.0% | Added |
| Danske Bank A/S | 39,955 | $25.5M | 0.06% | −1,432−3.5% | Reduced |
| LPL Financial LLC | 39,823 | $25.4M | 0.01% | +3,731+10.3% | Added |
| Capital Investment Services of America, Inc. | 39,761 | $25.4M | 2.26% | −101−0.3% | Reduced |
| Forsta Ap-Fonden | 38,400 | $24.5M | 0.15% | +5,400+16.4% | Added |
| Mediolanum International Funds Ltd | 38,761 | $24.4M | 0.26% | +4,909+14.5% | Added |
| Nisa Investment Advisors, LLC | 38,254 | $24.4M | 0.09% | −1,912−4.8% | Reduced |
| NS Partners Ltd | 37,910 | $24.2M | 0.94% | −84−0.2% | Reduced |
| Swedbank AB | 37,832 | $24.2M | 0.02% | +2,107+5.9% | Added |
| Mirae Asset Global Investments Co., Ltd. | 37,209 | $23.8M | 0.07% | +4,905+15.2% | Added |
| Stifel Financial Corp | 37,025 | $23.7M | 0.02% | +1,621+4.6% | Added |
| Franklin Street Advisors Inc | 36,714 | $23.5M | 1.35% | +1,583+4.5% | Added |
| Marble Harbor Investment Counsel, LLC | 36,655 | $23.4M | 2.45% | −2,263−5.8% | Reduced |
| Treasurer of the State of North Carolina | 36,280 | $23.2M | 0.07% | −1,414−3.8% | Reduced |
| RMB Capital Management, LLC | 36,272 | $23.2M | 0.43% | +4,627+14.6% | Added |
| Toroso Investments, LLC | 36,101 | $23.1M | 0.10% | +25,812+250.9% | Added |
| GW Henssler & Associates Ltd | 35,832 | $22.9M | 1.14% | −559−1.5% | Reduced |
| Adage Capital Partners GP, L.L.C. | 35,670 | $22.8M | 0.04% | −23,531−39.7% | Reduced |
| Ninety One UK Ltd | 35,562 | $22.7M | 0.05% | −22,366−38.6% | Reduced |
| Teacher Retirement System of Texas | 35,466 | $22.7M | 0.09% | +2,344+7.1% | Added |
| Academy Capital Management Inc | 35,452 | $22.6M | 3.23% | −310−0.9% | Reduced |
| TCG Advisory Services, LLC | 34,835 | $22.3M | 0.82% | −4,639−11.8% | Reduced |
| Janney Montgomery Scott LLC | 33,797 | $21.6M | 0.05% | −1,530−4.3% | Reduced |
| Handelsbanken Fonder AB | 33,595 | $21.5M | 0.07% | +116+0.3% | Added |
| Creative Planning | 33,269 | $21.3M | 0.02% | +4,201+14.5% | Added |
| KLP Kapitalforvaltning AS | 33,200 | $21.2M | 0.08% | −6,400−16.2% | Reduced |
| Parnassus Investments | 32,877 | $21.0M | 0.05% | −360−1.1% | Reduced |
| Jane Street Group, LLC | 32,795 | $21.0M | 0.02% | +19,566+147.9% | Added |
| Lountzis Asset Management, LLC | 32,708 | $20.9M | 6.82% | 00.0% | Unchanged |