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 |
|---|---|---|---|---|---|
| Academy Capital Management Inc | 34,319 | $19.3M | 2.76% | −921−2.6% | Reduced |
| Man Group plc | 34,525 | $19.4M | 0.04% | +9,113+35.9% | Added |
| GW Henssler & Associates Ltd | 34,816 | $19.6M | 0.92% | +1,079+3.2% | Added |
| Marble Harbor Investment Counsel, LLC | 34,981 | $19.7M | 2.13% | −1,539−4.2% | Reduced |
| NS Partners Ltd | 35,211 | $19.8M | 0.89% | −353−1.0% | Reduced |
| Weitz Investment Management, Inc.SuperinvestorWeitz Investment Management | 35,300 | $19.8M | 1.38% | 00.0% | Unchanged |
| Frontier Capital Management Co LLC | 35,364 | $19.9M | 0.20% | −9,979−22.0% | Reduced |
| Credit Agricole S A | 35,379 | $19.9M | 0.06% | +22,661+178.2% | Added |
| Premier Fund Managers Ltd | 36,004 | $20.1M | 1.42% | +4,967+16.0% | Added |
| Stifel Financial Corp | 35,765 | $20.1M | 0.02% | −2,597−6.8% | Reduced |
| Swedbank AB | 35,853 | $20.1M | 0.02% | −2,109−5.6% | Reduced |
| Nisa Investment Advisors, LLC | 36,042 | $20.3M | 0.07% | −7,427−17.1% | Reduced |
| Intech Investment Management LLC | 36,181 | $20.3M | 0.20% | +1,087+3.1% | Added |
| Handelsbanken Fonder AB | 36,194 | $20.3M | 0.07% | −665−1.8% | Reduced |
| SEB Asset Management AB | 36,527 | $20.5M | 0.09% | +36,527 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 37,147 | $20.9M | 0.05% | +2,991+8.8% | Added |
| Creative Planning | 37,170 | $20.9M | 0.01% | +1,007+2.8% | Added |
| CIBC Asset Management Inc | 38,180 | $21.5M | 0.05% | +362+1.0% | Added |
| Capital Investment Services of America, Inc. | 38,630 | $21.7M | 2.27% | +259+0.7% | Added |
| Villere St Denis J & Co LLC | 38,736 | $21.8M | 2.40% | −402−1.0% | Reduced |
| Toroso Investments, LLC | 38,814 | $21.8M | 0.07% | +9,571+32.7% | Added |
| Jones Financial Companies LLLP | 39,412 | $22.0M | 0.01% | +37,602+2,077.5% | Added |
| Korea Investment CORP | 39,193 | $22.0M | 0.05% | −16,962−30.2% | Reduced |
| Vanguard Investments Australia, Ltd. | 39,868 | $22.4M | 0.06% | +39,868 | New |
| DF Dent & Co Inc | 40,023 | $22.5M | 0.43% | −2,414−5.7% | Reduced |
| Chevy Chase Trust Holdings, Inc. | 40,596 | $22.8M | 0.07% | −1,161−2.8% | Reduced |
| Pacer Advisors, Inc. | 41,003 | $23.0M | 0.07% | +27,038+193.6% | Added |
| Ensign Peak Advisors, Inc | 41,370 | $23.2M | 0.04% | −8,325−16.8% | Reduced |
| Public Employees Retirement Association of Colorado | 41,388 | $23.3M | 0.09% | 00.0% | Unchanged |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 41,412 | $23.3M | 0.13% | +17,440+72.8% | Added |
| Achmea Investment Management B.V. | 41,757 | $23.5M | 0.62% | −287−0.7% | Reduced |
| APG Asset Management N.V. | 48,398 | $23.6M | 0.07% | +2,624+5.7% | Added |
| Prudential PLC | 42,050 | $23.6M | 0.18% | −9,659−18.7% | Reduced |
| Raiffeisen Bank International AG | 42,603 | $23.7M | 0.34% | −2,964−6.5% | Reduced |
| Mediolanum International Funds Ltd | 42,865 | $23.9M | 0.25% | +7,734+22.0% | Added |
| Manufacturers Life Insurance Company, The | 42,655 | $24.0M | 0.02% | −14,464−25.3% | Reduced |
| Capital Fund Management S.A. | 42,889 | $24.1M | 0.22% | −2,332−5.2% | Reduced |
| Geneva Capital Management LLC | 43,008 | $24.2M | 0.51% | +1,738+4.2% | Added |
| Allspring Global Investments Holdings, LLC | 43,198 | $24.4M | 0.04% | −3,332−7.2% | Reduced |
| Nomura Asset Management Co Ltd | 43,542 | $24.5M | 0.06% | +398+0.9% | Added |
| LPL Financial LLC | 43,832 | $24.6M | 0.01% | −1,804−4.0% | Reduced |
| KLP Kapitalforvaltning AS | 44,040 | $24.7M | 0.10% | +10,760+32.3% | Added |
| Danske Bank A/S | 44,067 | $24.8M | 0.06% | +60.0% | 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 |
| Factory Mutual Insurance Co | 45,800 | $25.7M | 0.29% | +400+0.9% | Added |
| Mirae Asset Global Investments Co., Ltd. | 47,131 | $26.5M | 0.08% | +3,350+7.7% | Added |
| Howland Capital Management LLC | 47,478 | $26.7M | 1.05% | +1,166+2.5% | Added |
| PFA Pension, Forsikringsaktieselskab | 47,725 | $26.8M | 0.08% | −2,086−4.2% | Reduced |
| New York State Common Retirement Fund | 47,835 | $26.9M | 0.04% | −500−1.0% | Reduced |
| Renaissance Technologies LLC | 48,504 | $27.3M | 0.04% | +48,504 | New |
| Schaper Benz & Wise Investment Counsel Inc | 49,145 | $27.6M | 2.11% | −353−0.7% | Reduced |
| EULAV Asset Management | 49,218 | $27.7M | 0.89% | −77,000−61.0% | Reduced |
| Marshall Wace, LLP | 49,295 | $27.7M | 0.03% | +48,068+3,917.5% | Added |
| Harvey Investment Co LLC | 50,084 | $28.1M | 3.09% | −2,255−4.3% | Reduced |
| Investment Management Corp of Ontario | 50,731 | $28.5M | 0.37% | −1,338−2.6% | Reduced |
| Assetmark, Inc | 50,824 | $28.6M | 0.06% | −1,945−3.7% | Reduced |
| Royal London Asset Management Ltd | 51,028 | $28.7M | 0.06% | −39,119−43.4% | Reduced |
| State of Wisconsin Investment Board | 51,378 | $28.9M | 0.07% | −323−0.6% | Reduced |
| Rockefeller Capital Management L.P. | 52,192 | $29.3M | 0.05% | −917−1.7% | Reduced |
| Biondo Investment Advisors, LLC | 52,266 | $29.4M | 3.77% | +531+1.0% | Added |
| Treasurer of the State of North Carolina | 52,644 | $29.6M | 0.09% | +2,531+5.1% | Added |
| NEOS Investment Management LLC | 53,633 | $30.1M | 0.15% | +16,026+42.6% | Added |
| Asset Management One Co.,Ltd. | 53,887 | $30.3M | 0.09% | −781−1.4% | Reduced |
| Vantage Investment Partners, LLC | 54,067 | $30.4M | 2.10% | −35−0.1% | Reduced |
| DekaBank Deutsche Girozentrale | 54,792 | $31.0M | 0.05% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 56,061 | $31.5M | 0.04% | +1,343+2.5% | Added |
| Thrivent Financial for Lutherans | 56,151 | $31.6M | 0.06% | −2,430−4.1% | Reduced |
| Quantum Capital Management, LLC | 56,208 | $31.6M | 4.04% | −20,238−26.5% | Reduced |
| RMB Capital Management, LLC | 57,201 | $32.1M | 0.57% | +17,559+44.3% | Added |
| Local Pensions Partnership Investment Ltd | 58,126 | $32.7M | 0.71% | −4,700−7.5% | Reduced |
| Beacon Investment Advisory Services, Inc. | 58,810 | $33.0M | 1.37% | −4,141−6.6% | Reduced |
| Colony Group, LLC | 60,188 | $33.8M | 0.04% | −1,201−2.0% | Reduced |
| Aware Super Pty Ltd as trustee of Aware Super | 60,696 | $34.1M | 0.52% | +60,696 | New |
| Candriam Luxembourg S.C.A. | 64,015 | $36.0M | 0.19% | +13,456+26.6% | Added |
| Natixis Advisors, L.P. | 64,462 | $36.2M | 0.05% | −12,311−16.0% | Reduced |
| Tremblant Capital Group | 64,540 | $36.3M | 1.17% | −748−1.1% | Reduced |
| BLI - Banque de Luxembourg Investments | 55,771 | $37.4M | 1.12% | 00.0% | Unchanged |
| New York State Teachers Retirement System | 67,154 | $37.7M | 0.08% | +585+0.9% | Added |
| Lazard Freres Gestion S.A.S. | 67,287 | $37.8M | 0.75% | +4,290+6.8% | Added |
| Adage Capital Partners GP, L.L.C. | 68,301 | $38.4M | 0.06% | +16,254+31.2% | Added |
| Manitou Investment Management Ltd. | 69,598 | $39.1M | 7.73% | +606+0.9% | Added |
| Prudential Financial Inc | 69,693 | $39.2M | 0.05% | −88,924−56.1% | Reduced |
| National Bank of Canada | 69,889 | $39.3M | 0.04% | +15,594+28.7% | Added |
| Teacher Retirement System of Texas | 70,369 | $39.5M | 0.16% | +4,635+7.1% | Added |
| Millennium Management LLC | 70,446 | $39.6M | 0.03% | +66,976+1,930.1% | Added |
| Great West Life Assurance Co | 70,464 | $39.7M | 0.07% | +3,570+5.3% | Added |
| Fiera Capital Corp | 71,207 | $40.0M | 0.14% | −26,553−27.2% | Reduced |
| State Board of Administration of Florida Retirement System | 71,559 | $40.2M | 0.08% | −1,613−2.2% | Reduced |
| Virginia Retirement Systems Et Al | 71,798 | $40.3M | 0.30% | +4,710+7.0% | Added |
| Aviva PLC | 73,682 | $41.4M | 0.07% | +2,018+2.8% | Added |
| Chicago Capital, LLC | 77,381 | $43.5M | 1.17% | −8,003−9.4% | Reduced |
| Gotham Asset Management, LLC | 80,477 | $45.2M | 0.14% | +20,739+34.7% | Added |
| Seilern Investment Management Ltd | 80,831 | $45.4M | 5.42% | −19,959−19.8% | Reduced |
| Canada Pension Plan Investment Board | 81,398 | $45.7M | 0.03% | −103,049−55.9% | Reduced |
| Riverbridge Partners LLC | 82,524 | $46.4M | 1.13% | −7,175−8.0% | Reduced |
| Baird Financial Group, Inc. | 82,535 | $46.4M | 0.07% | +32,384+64.6% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 85,355 | $48.0M | 0.12% | +12,950+17.9% | Added |
| Mogy Joel R Investment Counsel Inc | 85,492 | $48.0M | 3.01% | −53−0.1% | Reduced |
| Qube Research & Technologies Ltd | 85,650 | $48.1M | 0.07% | +70,431+462.8% | Added |