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 |
|---|---|---|---|---|---|
| LGT Capital Partners Ltd. | 108,016 | $60.7M | 3.22% | +2,018+1.9% | Added |
| Bradley Foster & Sargent Inc | 103,654 | $58.2M | 0.90% | −1,039−1.0% | Reduced |
| Stephens Investment Management Group LLC | 102,097 | $57.4M | 0.79% | +4,715+4.8% | Added |
| Kayne Anderson Rudnick Investment Management LLC | 100,840 | $56.7M | 0.17% | −12,267−10.8% | Reduced |
| Squarepoint Ops LLC | 100,309 | $56.4M | 0.12% | +42,885+74.7% | Added |
| Quantinno Capital Management LP | 99,794 | $56.1M | 0.09% | +44,875+81.7% | Added |
| Worldquant Millennium Advisors LLC | 98,355 | $55.3M | 0.21% | +98,355 | New |
| AQR Capital Management LLC | 96,726 | $53.8M | 0.02% | −18,049−15.7% | Reduced |
| SEI Investments Co | 94,486 | $53.1M | 0.05% | −41,390−30.5% | Reduced |
| Voya Investment Management LLC | 93,986 | $52.8M | 0.05% | −23,203−19.8% | Reduced |
| Standard Life Aberdeen plc | 93,297 | $52.4M | 0.08% | +3,314+3.7% | Added |
| Davis R M Inc | 91,963 | $51.7M | 0.92% | −1,520−1.6% | Reduced |
| Freestone Grove Partners LP | 90,516 | $50.9M | 0.37% | +90,516 | New |
| Bellevue Group AG | 89,131 | $50.1M | 1.19% | −5,408−5.7% | Reduced |
| Pictet & Cie (Europe) SA | 89,000 | $50.0M | 1.07% | 00.0% | Unchanged |
| Lord, Abbett & Co. LLC | 88,247 | $49.6M | 0.16% | −98,762−52.8% | Reduced |
| Citadel Advisors LLC | 87,566 | $49.2M | 0.03% | +69,723+390.8% | Added |
| Assenagon Asset Management S.A. | 85,835 | $48.2M | 0.08% | +10,226+13.5% | Added |
| Qube Research & Technologies Ltd | 85,650 | $48.1M | 0.07% | +70,431+462.8% | Added |
| Mogy Joel R Investment Counsel Inc | 85,492 | $48.0M | 3.01% | −53−0.1% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 85,355 | $48.0M | 0.12% | +12,950+17.9% | Added |
| Baird Financial Group, Inc. | 82,535 | $46.4M | 0.07% | +32,384+64.6% | Added |
| Riverbridge Partners LLC | 82,524 | $46.4M | 1.13% | −7,175−8.0% | Reduced |
| Canada Pension Plan Investment Board | 81,398 | $45.7M | 0.03% | −103,049−55.9% | Reduced |
| Seilern Investment Management Ltd | 80,831 | $45.4M | 5.42% | −19,959−19.8% | Reduced |
| Gotham Asset Management, LLC | 80,477 | $45.2M | 0.14% | +20,739+34.7% | Added |
| Chicago Capital, LLC | 77,381 | $43.5M | 1.17% | −8,003−9.4% | Reduced |
| Aviva PLC | 73,682 | $41.4M | 0.07% | +2,018+2.8% | Added |
| Virginia Retirement Systems Et Al | 71,798 | $40.3M | 0.30% | +4,710+7.0% | Added |
| State Board of Administration of Florida Retirement System | 71,559 | $40.2M | 0.08% | −1,613−2.2% | Reduced |
| Fiera Capital Corp | 71,207 | $40.0M | 0.14% | −26,553−27.2% | Reduced |
| Great West Life Assurance Co | 70,464 | $39.7M | 0.07% | +3,570+5.3% | Added |
| Millennium Management LLC | 70,446 | $39.6M | 0.03% | +66,976+1,930.1% | Added |
| Teacher Retirement System of Texas | 70,369 | $39.5M | 0.16% | +4,635+7.1% | Added |
| National Bank of Canada | 69,889 | $39.3M | 0.04% | +15,594+28.7% | Added |
| Prudential Financial Inc | 69,693 | $39.2M | 0.05% | −88,924−56.1% | Reduced |
| Manitou Investment Management Ltd. | 69,598 | $39.1M | 7.73% | +606+0.9% | Added |
| Adage Capital Partners GP, L.L.C. | 68,301 | $38.4M | 0.06% | +16,254+31.2% | Added |
| Lazard Freres Gestion S.A.S. | 67,287 | $37.8M | 0.75% | +4,290+6.8% | Added |
| New York State Teachers Retirement System | 67,154 | $37.7M | 0.08% | +585+0.9% | Added |
| BLI - Banque de Luxembourg Investments | 55,771 | $37.4M | 1.12% | 00.0% | Unchanged |
| Tremblant Capital Group | 64,540 | $36.3M | 1.17% | −748−1.1% | Reduced |
| Natixis Advisors, L.P. | 64,462 | $36.2M | 0.05% | −12,311−16.0% | Reduced |
| Candriam Luxembourg S.C.A. | 64,015 | $36.0M | 0.19% | +13,456+26.6% | Added |
| Aware Super Pty Ltd as trustee of Aware Super | 60,696 | $34.1M | 0.52% | +60,696 | New |
| Colony Group, LLC | 60,188 | $33.8M | 0.04% | −1,201−2.0% | Reduced |
| Beacon Investment Advisory Services, Inc. | 58,810 | $33.0M | 1.37% | −4,141−6.6% | Reduced |
| Local Pensions Partnership Investment Ltd | 58,126 | $32.7M | 0.71% | −4,700−7.5% | Reduced |
| RMB Capital Management, LLC | 57,201 | $32.1M | 0.57% | +17,559+44.3% | Added |
| Quantum Capital Management, LLC | 56,208 | $31.6M | 4.04% | −20,238−26.5% | Reduced |
| Thrivent Financial for Lutherans | 56,151 | $31.6M | 0.06% | −2,430−4.1% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 56,061 | $31.5M | 0.04% | +1,343+2.5% | Added |
| DekaBank Deutsche Girozentrale | 54,792 | $31.0M | 0.05% | 00.0% | Unchanged |
| Vantage Investment Partners, LLC | 54,067 | $30.4M | 2.10% | −35−0.1% | Reduced |
| Asset Management One Co.,Ltd. | 53,887 | $30.3M | 0.09% | −781−1.4% | Reduced |
| NEOS Investment Management LLC | 53,633 | $30.1M | 0.15% | +16,026+42.6% | Added |
| Treasurer of the State of North Carolina | 52,644 | $29.6M | 0.09% | +2,531+5.1% | Added |
| Biondo Investment Advisors, LLC | 52,266 | $29.4M | 3.77% | +531+1.0% | Added |
| Rockefeller Capital Management L.P. | 52,192 | $29.3M | 0.05% | −917−1.7% | Reduced |
| State of Wisconsin Investment Board | 51,378 | $28.9M | 0.07% | −323−0.6% | Reduced |
| Royal London Asset Management Ltd | 51,028 | $28.7M | 0.06% | −39,119−43.4% | Reduced |
| Assetmark, Inc | 50,824 | $28.6M | 0.06% | −1,945−3.7% | Reduced |
| Investment Management Corp of Ontario | 50,731 | $28.5M | 0.37% | −1,338−2.6% | Reduced |
| Harvey Investment Co LLC | 50,084 | $28.1M | 3.09% | −2,255−4.3% | Reduced |
| Marshall Wace, LLP | 49,295 | $27.7M | 0.03% | +48,068+3,917.5% | Added |
| EULAV Asset Management | 49,218 | $27.7M | 0.89% | −77,000−61.0% | Reduced |
| Schaper Benz & Wise Investment Counsel Inc | 49,145 | $27.6M | 2.11% | −353−0.7% | Reduced |
| Renaissance Technologies LLC | 48,504 | $27.3M | 0.04% | +48,504 | New |
| New York State Common Retirement Fund | 47,835 | $26.9M | 0.04% | −500−1.0% | Reduced |
| PFA Pension, Forsikringsaktieselskab | 47,725 | $26.8M | 0.08% | −2,086−4.2% | Reduced |
| Howland Capital Management LLC | 47,478 | $26.7M | 1.05% | +1,166+2.5% | Added |
| Mirae Asset Global Investments Co., Ltd. | 47,131 | $26.5M | 0.08% | +3,350+7.7% | Added |
| Factory Mutual Insurance Co | 45,800 | $25.7M | 0.29% | +400+0.9% | Added |
| Mackenzie Financial Corp | 45,739 | $25.7M | 0.03% | −450−1.0% | Reduced |
| The PNC Financial Services Group, Inc. | 45,739 | $25.7M | 0.01% | +2,355+5.4% | Added |
| Danske Bank A/S | 44,067 | $24.8M | 0.06% | +60.0% | Added |
| KLP Kapitalforvaltning AS | 44,040 | $24.7M | 0.10% | +10,760+32.3% | Added |
| LPL Financial LLC | 43,832 | $24.6M | 0.01% | −1,804−4.0% | Reduced |
| Nomura Asset Management Co Ltd | 43,542 | $24.5M | 0.06% | +398+0.9% | Added |
| Allspring Global Investments Holdings, LLC | 43,198 | $24.4M | 0.04% | −3,332−7.2% | Reduced |
| Geneva Capital Management LLC | 43,008 | $24.2M | 0.51% | +1,738+4.2% | Added |
| Capital Fund Management S.A. | 42,889 | $24.1M | 0.22% | −2,332−5.2% | Reduced |
| Manufacturers Life Insurance Company, The | 42,655 | $24.0M | 0.02% | −14,464−25.3% | Reduced |
| Mediolanum International Funds Ltd | 42,865 | $23.9M | 0.25% | +7,734+22.0% | Added |
| Raiffeisen Bank International AG | 42,603 | $23.7M | 0.34% | −2,964−6.5% | Reduced |
| Prudential PLC | 42,050 | $23.6M | 0.18% | −9,659−18.7% | Reduced |
| APG Asset Management N.V. | 48,398 | $23.6M | 0.07% | +2,624+5.7% | Added |
| Achmea Investment Management B.V. | 41,757 | $23.5M | 0.62% | −287−0.7% | Reduced |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 41,412 | $23.3M | 0.13% | +17,440+72.8% | Added |
| Public Employees Retirement Association of Colorado | 41,388 | $23.3M | 0.09% | 00.0% | Unchanged |
| Ensign Peak Advisors, Inc | 41,370 | $23.2M | 0.04% | −8,325−16.8% | Reduced |
| Pacer Advisors, Inc. | 41,003 | $23.0M | 0.07% | +27,038+193.6% | Added |
| Chevy Chase Trust Holdings, Inc. | 40,596 | $22.8M | 0.07% | −1,161−2.8% | Reduced |
| DF Dent & Co Inc | 40,023 | $22.5M | 0.43% | −2,414−5.7% | Reduced |
| Vanguard Investments Australia, Ltd. | 39,868 | $22.4M | 0.06% | +39,868 | New |
| Korea Investment CORP | 39,193 | $22.0M | 0.05% | −16,962−30.2% | Reduced |
| Jones Financial Companies LLLP | 39,412 | $22.0M | 0.01% | +37,602+2,077.5% | Added |
| Toroso Investments, LLC | 38,814 | $21.8M | 0.07% | +9,571+32.7% | Added |
| Villere St Denis J & Co LLC | 38,736 | $21.8M | 2.40% | −402−1.0% | Reduced |
| Capital Investment Services of America, Inc. | 38,630 | $21.7M | 2.27% | +259+0.7% | Added |