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, Q4 2025
Institutional positions in IDEXX Laboratories Inc as of Dec 31, 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
- 1,385
- +111 vs. Q3 2025
- Shares held
- 82.4M
- +10.5M (+14.6%) vs. Q3 2025
- Total value
- $50.3B
- +$4.35B (+9.5%) vs. Q3 2025
- New holders
- 191
- 482 more added
- Sold out
- 80
- 481 more reduced
28 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding IDEXX Laboratories Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Seilern Investment Management Ltd | 100,790 | $68.2M | 5.29% | −40,486−28.7% | Reduced |
| Alliancebernstein L.P. | 99,382 | $67.2M | 0.02% | +271+0.3% | Added |
| Fiera Capital Corp | 97,760 | $66.1M | 0.21% | −32,761−25.1% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 97,610 | $66.0M | 0.11% | −28,555−22.6% | Reduced |
| Stephens Investment Management Group LLC | 97,382 | $65.9M | 0.86% | +1,781+1.9% | Added |
| Bellevue Group AG | 94,539 | $64.0M | 1.21% | +17,952+23.4% | Added |
| Davis R M Inc | 93,483 | $63.2M | 1.09% | −2,105−2.2% | Reduced |
| Royal London Asset Management Ltd | 90,147 | $61.0M | 0.13% | −60.0% | Reduced |
| Standard Life Aberdeen plc | 89,983 | $60.9M | 0.09% | −1,280−1.4% | Reduced |
| Riverbridge Partners LLC | 89,699 | $60.7M | 1.14% | −5,734−6.0% | Reduced |
| Pictet & Cie (Europe) SA | 89,000 | $60.2M | 1.20% | 00.0% | Unchanged |
| Mogy Joel R Investment Counsel Inc | 85,545 | $57.9M | 3.14% | +272+0.3% | Added |
| Chicago Capital, LLC | 85,384 | $57.8M | 1.43% | −412−0.5% | Reduced |
| Natixis Advisors, L.P. | 76,773 | $51.9M | 0.07% | +30,528+66.0% | Added |
| Quantum Capital Management, LLC | 76,446 | $51.7M | 5.99% | −1,379−1.8% | Reduced |
| Assenagon Asset Management S.A. | 75,609 | $51.2M | 0.08% | +19,741+35.3% | Added |
| State Board of Administration of Florida Retirement System | 73,172 | $49.5M | 0.09% | −2,577−3.4% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 72,405 | $49.0M | 0.12% | +12,815+21.5% | Added |
| Aviva PLC | 71,664 | $48.5M | 0.08% | +3,382+5.0% | Added |
| Life Cycle Investment Partners Ltd | 70,825 | $47.9M | 0.34% | +70,825 | New |
| Manitou Investment Management Ltd. | 68,992 | $46.7M | 8.18% | −26,085−27.4% | Reduced |
| Virginia Retirement Systems Et Al | 67,088 | $45.4M | 0.27% | −9,720−12.7% | Reduced |
| Great West Life Assurance Co | 66,894 | $45.3M | 0.08% | −10,361−13.4% | Reduced |
| New York State Teachers Retirement System | 66,569 | $45.0M | 0.09% | −780−1.2% | Reduced |
| Zurich Insurance Group Ltd | 65,870 | $44.6M | 0.31% | −159,098−70.7% | Reduced |
| Teacher Retirement System of Texas | 65,734 | $44.5M | 0.15% | +30,268+85.3% | Added |
| Tremblant Capital Group | 65,288 | $44.2M | 1.13% | +65,288 | New |
| TCW Group Inc | 64,744 | $43.8M | 0.31% | +64,744 | New |
| Lazard Freres Gestion S.A.S. | 62,997 | $42.6M | 0.77% | −15,702−20.0% | Reduced |
| Beacon Investment Advisory Services, Inc. | 62,951 | $42.6M | 1.74% | +6,710+11.9% | Added |
| Local Pensions Partnership Investment Ltd | 62,826 | $42.5M | 0.75% | −9,500−13.1% | Reduced |
| Colony Group, LLC | 61,389 | $41.4M | 0.05% | +9,471+18.2% | Added |
| Gotham Asset Management, LLC | 59,738 | $40.4M | 0.15% | +11,095+22.8% | Added |
| Thrivent Financial for Lutherans | 58,581 | $39.6M | 0.07% | −1,957−3.2% | Reduced |
| Squarepoint Ops LLC | 57,424 | $38.8M | 0.08% | +55,290+2,590.9% | Added |
| Manufacturers Life Insurance Company, The | 57,119 | $38.7M | 0.03% | +2,523+4.6% | Added |
| BLI - Banque de Luxembourg Investments | 55,771 | $38.0M | 1.12% | −14,052−20.1% | Reduced |
| Korea Investment CORP | 56,155 | $38.0M | 0.07% | +8,891+18.8% | Added |
| Asset Management One Co.,Ltd. | 54,668 | $37.6M | 0.10% | −1,169−2.1% | Reduced |
| Quantinno Capital Management LP | 54,919 | $37.2M | 0.07% | +11,776+27.3% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 54,718 | $37.0M | 0.06% | +2,850+5.5% | Added |
| National Bank of Canada | 54,295 | $36.7M | 0.04% | +7,587+16.2% | Added |
| Flossbach Von Storch AG | 54,131 | $36.6M | 0.15% | −56,403−51.0% | Reduced |
| Vantage Investment Partners, LLC | 54,102 | $36.6M | 2.44% | −2,605−4.6% | Reduced |
| Rockefeller Capital Management L.P. | 53,109 | $35.9M | 0.06% | −644−1.2% | Reduced |
| Assetmark, Inc | 52,769 | $35.7M | 0.07% | +1,518+3.0% | Added |
| Harvey Investment Co LLC | 52,339 | $35.4M | 3.77% | −60−0.1% | Reduced |
| Investment Management Corp of Ontario | 52,069 | $35.2M | 0.47% | +3,274+6.7% | Added |
| Adage Capital Partners GP, L.L.C. | 52,047 | $35.2M | 0.05% | +16,377+45.9% | Added |
| Biondo Investment Advisors, LLC | 51,735 | $35.0M | 4.23% | −534−1.0% | Reduced |
| Prudential PLC | 51,709 | $35.0M | 0.28% | +5,507+11.9% | Added |
| State of Wisconsin Investment Board | 51,701 | $35.0M | 0.08% | +140.0% | Added |
| Candriam Luxembourg S.C.A. | 50,559 | $34.2M | 0.17% | +27,584+120.1% | Added |
| PFA Pension, Forsikringsaktieselskab | 49,811 | $34.0M | 0.10% | +49,811 | New |
| Baird Financial Group, Inc. | 50,151 | $33.9M | 0.05% | −375−0.7% | Reduced |
| Treasurer of the State of North Carolina | 50,113 | $33.9M | 0.11% | +13,833+38.1% | Added |
| Ensign Peak Advisors, Inc | 49,695 | $33.6M | 0.06% | +4,365+9.6% | Added |
| Schaper Benz & Wise Investment Counsel Inc | 49,498 | $33.5M | 2.42% | −57−0.1% | Reduced |
| New York State Common Retirement Fund | 48,335 | $32.7M | 0.04% | −11,890−19.7% | Reduced |
| Mackenzie Financial Corp | 46,189 | $31.5M | 0.04% | −57,545−55.5% | Reduced |
| Howland Capital Management LLC | 46,312 | $31.3M | 1.19% | −339−0.7% | Reduced |
| Allspring Global Investments Holdings, LLC | 46,530 | $31.2M | 0.05% | +41+0.1% | Added |
| Raiffeisen Bank International AG | 45,567 | $31.1M | 0.40% | −10,050−18.1% | Reduced |
| Holocene Advisors, LP | 45,721 | $30.9M | 0.07% | +45,721 | New |
| LPL Financial LLC | 45,636 | $30.9M | 0.01% | +5,813+14.6% | Added |
| Factory Mutual Insurance Co | 45,400 | $30.7M | 0.31% | −400−0.9% | Reduced |
| Frontier Capital Management Co LLC | 45,343 | $30.7M | 0.33% | −62,959−58.1% | Reduced |
| Capital Fund Management S.A. | 45,221 | $30.6M | 0.29% | +31,715+234.8% | Added |
| DekaBank Deutsche Girozentrale | 54,792 | $30.2M | 0.06% | 00.0% | Unchanged |
| Danske Bank A/S | 44,061 | $29.8M | 0.07% | +4,106+10.3% | Added |
| Mirae Asset Global Investments Co., Ltd. | 43,781 | $29.6M | 0.08% | +6,572+17.7% | Added |
| Nisa Investment Advisors, LLC | 43,469 | $29.4M | 0.10% | +5,215+13.6% | Added |
| SG Americas Securities, LLC | 43,425 | $29.4M | 0.04% | −1,608−3.6% | Reduced |
| The PNC Financial Services Group, Inc. | 43,384 | $29.4M | 0.02% | +687+1.6% | Added |
| Nomura Asset Management Co Ltd | 43,144 | $29.2M | 0.07% | −9,958−18.8% | Reduced |
| CIBC World Markets Corp | 43,043 | $29.1M | 0.15% | +43,043 | New |
| DF Dent & Co Inc | 42,437 | $28.7M | 0.41% | −2,010−4.5% | Reduced |
| Achmea Investment Management B.V. | 42,044 | $28.4M | 0.73% | +24,275+136.6% | Added |
| Chevy Chase Trust Holdings, Inc. | 41,757 | $28.2M | 0.08% | +912+2.2% | Added |
| Public Employees Retirement Association of Colorado | 41,388 | $28.0M | 0.10% | +33,700+438.3% | Added |
| Geneva Capital Management LLC | 41,270 | $27.9M | 0.52% | −697−1.7% | Reduced |
| Franklin Street Advisors Inc | 40,183 | $27.2M | 1.55% | +3,469+9.4% | Added |
| RMB Capital Management, LLC | 39,642 | $26.8M | 0.47% | +3,370+9.3% | Added |
| Villere St Denis J & Co LLC | 39,138 | $26.5M | 2.66% | −3,066−7.3% | Reduced |
| APG Asset Management N.V. | 45,774 | $26.4M | 0.07% | +45,774 | New |
| Capital Investment Services of America, Inc. | 38,371 | $26.0M | 2.45% | −1,390−3.5% | Reduced |
| Stifel Financial Corp | 38,362 | $26.0M | 0.02% | +1,337+3.6% | Added |
| Andra AP-fonden | 38,320 | $25.9M | 0.32% | +8,420+28.2% | Added |
| Swedbank AB | 37,962 | $25.7M | 0.02% | +130+0.3% | Added |
| CIBC Asset Management Inc | 37,818 | $25.6M | 0.06% | +8,274+28.0% | Added |
| NEOS Investment Management LLC | 37,607 | $25.4M | 0.15% | +7,556+25.1% | Added |
| Handelsbanken Fonder AB | 36,859 | $24.9M | 0.08% | +3,264+9.7% | Added |
| Marble Harbor Investment Counsel, LLC | 36,520 | $24.7M | 2.64% | −135−0.4% | Reduced |
| Swiss Life Asset Management Ltd | 36,450 | $24.7M | 0.13% | +9,910+37.3% | Added |
| Creative Planning | 36,163 | $24.5M | 0.02% | +2,894+8.7% | Added |
| Forsta Ap-Fonden | 35,920 | $24.3M | 0.14% | −2,480−6.5% | Reduced |
| NS Partners Ltd | 35,564 | $24.1M | 0.94% | −2,346−6.2% | Reduced |
| Mediolanum International Funds Ltd | 35,131 | $24.0M | 0.24% | −3,630−9.4% | Reduced |
| Weitz Investment Management, Inc.SuperinvestorWeitz Investment Management | 35,300 | $23.9M | 1.42% | −21,500−37.9% | Reduced |
| Academy Capital Management Inc | 35,240 | $23.8M | 3.17% | −212−0.6% | Reduced |