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 |
|---|---|---|---|---|---|
| APG Asset Management N.V. | 45,774 | $26.4M | 0.07% | +45,774 | New |
| Villere St Denis J & Co LLC | 39,138 | $26.5M | 2.66% | −3,066−7.3% | Reduced |
| RMB Capital Management, LLC | 39,642 | $26.8M | 0.47% | +3,370+9.3% | Added |
| Franklin Street Advisors Inc | 40,183 | $27.2M | 1.55% | +3,469+9.4% | Added |
| Geneva Capital Management LLC | 41,270 | $27.9M | 0.52% | −697−1.7% | Reduced |
| Public Employees Retirement Association of Colorado | 41,388 | $28.0M | 0.10% | +33,700+438.3% | Added |
| Chevy Chase Trust Holdings, Inc. | 41,757 | $28.2M | 0.08% | +912+2.2% | Added |
| Achmea Investment Management B.V. | 42,044 | $28.4M | 0.73% | +24,275+136.6% | Added |
| DF Dent & Co Inc | 42,437 | $28.7M | 0.41% | −2,010−4.5% | Reduced |
| CIBC World Markets Corp | 43,043 | $29.1M | 0.15% | +43,043 | New |
| Nomura Asset Management Co Ltd | 43,144 | $29.2M | 0.07% | −9,958−18.8% | Reduced |
| The PNC Financial Services Group, Inc. | 43,384 | $29.4M | 0.02% | +687+1.6% | Added |
| SG Americas Securities, LLC | 43,425 | $29.4M | 0.04% | −1,608−3.6% | Reduced |
| Nisa Investment Advisors, LLC | 43,469 | $29.4M | 0.10% | +5,215+13.6% | Added |
| Mirae Asset Global Investments Co., Ltd. | 43,781 | $29.6M | 0.08% | +6,572+17.7% | Added |
| Danske Bank A/S | 44,061 | $29.8M | 0.07% | +4,106+10.3% | Added |
| DekaBank Deutsche Girozentrale | 54,792 | $30.2M | 0.06% | 00.0% | Unchanged |
| Capital Fund Management S.A. | 45,221 | $30.6M | 0.29% | +31,715+234.8% | Added |
| Frontier Capital Management Co LLC | 45,343 | $30.7M | 0.33% | −62,959−58.1% | Reduced |
| Factory Mutual Insurance Co | 45,400 | $30.7M | 0.31% | −400−0.9% | Reduced |
| LPL Financial LLC | 45,636 | $30.9M | 0.01% | +5,813+14.6% | Added |
| Holocene Advisors, LP | 45,721 | $30.9M | 0.07% | +45,721 | New |
| Raiffeisen Bank International AG | 45,567 | $31.1M | 0.40% | −10,050−18.1% | Reduced |
| Allspring Global Investments Holdings, LLC | 46,530 | $31.2M | 0.05% | +41+0.1% | Added |
| Howland Capital Management LLC | 46,312 | $31.3M | 1.19% | −339−0.7% | Reduced |
| Mackenzie Financial Corp | 46,189 | $31.5M | 0.04% | −57,545−55.5% | Reduced |
| New York State Common Retirement Fund | 48,335 | $32.7M | 0.04% | −11,890−19.7% | Reduced |
| Schaper Benz & Wise Investment Counsel Inc | 49,498 | $33.5M | 2.42% | −57−0.1% | Reduced |
| Ensign Peak Advisors, Inc | 49,695 | $33.6M | 0.06% | +4,365+9.6% | Added |
| Treasurer of the State of North Carolina | 50,113 | $33.9M | 0.11% | +13,833+38.1% | Added |
| Baird Financial Group, Inc. | 50,151 | $33.9M | 0.05% | −375−0.7% | Reduced |
| PFA Pension, Forsikringsaktieselskab | 49,811 | $34.0M | 0.10% | +49,811 | New |
| Candriam Luxembourg S.C.A. | 50,559 | $34.2M | 0.17% | +27,584+120.1% | Added |
| State of Wisconsin Investment Board | 51,701 | $35.0M | 0.08% | +140.0% | Added |
| Prudential PLC | 51,709 | $35.0M | 0.28% | +5,507+11.9% | Added |
| Biondo Investment Advisors, LLC | 51,735 | $35.0M | 4.23% | −534−1.0% | Reduced |
| Adage Capital Partners GP, L.L.C. | 52,047 | $35.2M | 0.05% | +16,377+45.9% | Added |
| Investment Management Corp of Ontario | 52,069 | $35.2M | 0.47% | +3,274+6.7% | Added |
| Harvey Investment Co LLC | 52,339 | $35.4M | 3.77% | −60−0.1% | Reduced |
| Assetmark, Inc | 52,769 | $35.7M | 0.07% | +1,518+3.0% | Added |
| Rockefeller Capital Management L.P. | 53,109 | $35.9M | 0.06% | −644−1.2% | Reduced |
| Vantage Investment Partners, LLC | 54,102 | $36.6M | 2.44% | −2,605−4.6% | Reduced |
| Flossbach Von Storch AG | 54,131 | $36.6M | 0.15% | −56,403−51.0% | Reduced |
| National Bank of Canada | 54,295 | $36.7M | 0.04% | +7,587+16.2% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 54,718 | $37.0M | 0.06% | +2,850+5.5% | Added |
| Quantinno Capital Management LP | 54,919 | $37.2M | 0.07% | +11,776+27.3% | Added |
| Asset Management One Co.,Ltd. | 54,668 | $37.6M | 0.10% | −1,169−2.1% | Reduced |
| Korea Investment CORP | 56,155 | $38.0M | 0.07% | +8,891+18.8% | Added |
| BLI - Banque de Luxembourg Investments | 55,771 | $38.0M | 1.12% | −14,052−20.1% | Reduced |
| Manufacturers Life Insurance Company, The | 57,119 | $38.7M | 0.03% | +2,523+4.6% | Added |
| Squarepoint Ops LLC | 57,424 | $38.8M | 0.08% | +55,290+2,590.9% | Added |
| Thrivent Financial for Lutherans | 58,581 | $39.6M | 0.07% | −1,957−3.2% | Reduced |
| Gotham Asset Management, LLC | 59,738 | $40.4M | 0.15% | +11,095+22.8% | Added |
| Colony Group, LLC | 61,389 | $41.4M | 0.05% | +9,471+18.2% | Added |
| Local Pensions Partnership Investment Ltd | 62,826 | $42.5M | 0.75% | −9,500−13.1% | Reduced |
| Beacon Investment Advisory Services, Inc. | 62,951 | $42.6M | 1.74% | +6,710+11.9% | Added |
| Lazard Freres Gestion S.A.S. | 62,997 | $42.6M | 0.77% | −15,702−20.0% | Reduced |
| TCW Group Inc | 64,744 | $43.8M | 0.31% | +64,744 | New |
| Tremblant Capital Group | 65,288 | $44.2M | 1.13% | +65,288 | New |
| Teacher Retirement System of Texas | 65,734 | $44.5M | 0.15% | +30,268+85.3% | Added |
| Zurich Insurance Group Ltd | 65,870 | $44.6M | 0.31% | −159,098−70.7% | Reduced |
| New York State Teachers Retirement System | 66,569 | $45.0M | 0.09% | −780−1.2% | Reduced |
| Great West Life Assurance Co | 66,894 | $45.3M | 0.08% | −10,361−13.4% | Reduced |
| Virginia Retirement Systems Et Al | 67,088 | $45.4M | 0.27% | −9,720−12.7% | Reduced |
| Manitou Investment Management Ltd. | 68,992 | $46.7M | 8.18% | −26,085−27.4% | Reduced |
| Life Cycle Investment Partners Ltd | 70,825 | $47.9M | 0.34% | +70,825 | New |
| Aviva PLC | 71,664 | $48.5M | 0.08% | +3,382+5.0% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 72,405 | $49.0M | 0.12% | +12,815+21.5% | Added |
| State Board of Administration of Florida Retirement System | 73,172 | $49.5M | 0.09% | −2,577−3.4% | Reduced |
| Assenagon Asset Management S.A. | 75,609 | $51.2M | 0.08% | +19,741+35.3% | Added |
| Quantum Capital Management, LLC | 76,446 | $51.7M | 5.99% | −1,379−1.8% | Reduced |
| Natixis Advisors, L.P. | 76,773 | $51.9M | 0.07% | +30,528+66.0% | Added |
| Chicago Capital, LLC | 85,384 | $57.8M | 1.43% | −412−0.5% | Reduced |
| Mogy Joel R Investment Counsel Inc | 85,545 | $57.9M | 3.14% | +272+0.3% | Added |
| Pictet & Cie (Europe) SA | 89,000 | $60.2M | 1.20% | 00.0% | Unchanged |
| Riverbridge Partners LLC | 89,699 | $60.7M | 1.14% | −5,734−6.0% | Reduced |
| Standard Life Aberdeen plc | 89,983 | $60.9M | 0.09% | −1,280−1.4% | Reduced |
| Royal London Asset Management Ltd | 90,147 | $61.0M | 0.13% | −60.0% | Reduced |
| Davis R M Inc | 93,483 | $63.2M | 1.09% | −2,105−2.2% | Reduced |
| Bellevue Group AG | 94,539 | $64.0M | 1.21% | +17,952+23.4% | Added |
| Stephens Investment Management Group LLC | 97,382 | $65.9M | 0.86% | +1,781+1.9% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 97,610 | $66.0M | 0.11% | −28,555−22.6% | Reduced |
| Fiera Capital Corp | 97,760 | $66.1M | 0.21% | −32,761−25.1% | Reduced |
| Alliancebernstein L.P. | 99,382 | $67.2M | 0.02% | +271+0.3% | Added |
| Seilern Investment Management Ltd | 100,790 | $68.2M | 5.29% | −40,486−28.7% | Reduced |
| Bradley Foster & Sargent Inc | 104,693 | $70.8M | 1.04% | −416−0.4% | Reduced |
| LGT Capital Partners Ltd. | 105,998 | $71.7M | 3.56% | −14,327−11.9% | Reduced |
| National Pension Service | 106,344 | $71.9M | 0.05% | −10,749−9.2% | Reduced |
| Brown Advisory Inc | 107,572 | $72.8M | 0.10% | −1,245−1.1% | Reduced |
| Rathbone Brothers plc | 108,872 | $73.7M | 0.29% | −8,697−7.4% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 109,861 | $74.3M | 0.09% | +8,954+8.9% | Added |
| Kayne Anderson Rudnick Investment Management LLC | 113,107 | $76.5M | 0.21% | −17,092−13.1% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 114,154 | $77.4M | 0.13% | +909+0.8% | Added |
| CI Private Wealth, LLC | 114,625 | $77.6M | 0.11% | −1,552−1.3% | Reduced |
| AQR Capital Management LLC | 114,775 | $77.6M | 0.04% | −20,379−15.1% | Reduced |
| Citigroup Inc | 117,007 | $79.2M | 0.05% | −27,445−19.0% | Reduced |
| Voya Investment Management LLC | 117,189 | $79.3M | 0.08% | +3,020+2.6% | Added |
| California State Teachers Retirement System | 125,402 | $84.8M | 0.08% | −1,258−1.0% | Reduced |
| EULAV Asset Management | 126,218 | $85.4M | 2.28% | −20.0% | Reduced |
| Loring Wolcott & Coolidge Fiduciary Advisors LLP | 124,045 | $86.2M | 0.78% | −3,066−2.4% | Reduced |