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 |
|---|---|---|---|---|---|
| Vanguard Group Inc | 9,945,328 | $6.73B | 0.10% | −16,697−0.2% | Reduced |
| BlackRock, Inc. | 8,534,886 | $5.77B | 0.10% | +329,875+4.0% | Added |
| State Street Corp | 3,656,626 | $2.47B | 0.08% | +138,956+4.0% | Added |
| Invesco Ltd. | 3,296,177 | $2.23B | 0.21% | +1,975,914+149.7% | Added |
| Geode Capital Management, LLC | 2,583,939 | $1.75B | 0.11% | +86,263+3.5% | Added |
| Fundsmith LLPSuperinvestorFundsmith | 1,876,035 | $1.27B | 7.42% | −734,422−28.1% | Reduced |
| Bamco Inc | 1,798,041 | $1.22B | 3.30% | −86,088−4.6% | Reduced |
| Bank of New York Mellon Corp | 1,624,469 | $1.10B | 0.19% | −432,211−21.0% | Reduced |
| Morgan Stanley | 1,553,731 | $1.05B | 0.06% | −68,759−4.2% | Reduced |
| Blair William & Co | 1,001,375 | $677.5M | 1.82% | −30,411−2.9% | Reduced |
| Principal Financial Group Inc | 968,946 | $655.6M | 0.33% | −346,776−26.4% | Reduced |
| Polen Capital Management LLC | 960,537 | $649.8M | 2.78% | −166,610−14.8% | Reduced |
| Price T Rowe Associates Inc | 952,223 | $644.2M | 0.07% | +258,015+37.2% | Added |
| Northern Trust Corp | 923,152 | $624.5M | 0.08% | −19,216−2.0% | Reduced |
| UBS Asset Management Americas Inc | 859,887 | $581.7M | 0.12% | −15,662−1.8% | Reduced |
| Goldman Sachs Group Inc | 832,189 | $563.0M | 0.08% | +120,247+16.9% | Added |
| Wellington Management Group LLP | 779,214 | $527.2M | 0.09% | +592,834+318.1% | Added |
| JPMorgan Chase & Co | 673,228 | $455.5M | 0.03% | −196,702−22.6% | Reduced |
| Legal & General Group Plc | 670,614 | $453.7M | 0.10% | −4,921−0.7% | Reduced |
| American Century Companies Inc | 628,934 | $425.5M | 0.21% | −76,224−10.8% | Reduced |
| Franklin Resources Inc | 627,159 | $424.3M | 0.10% | +54,181+9.5% | Added |
| Amundi | 618,743 | $418.6M | 0.11% | +26,144+4.4% | Added |
| Capital Research Global Investors | 607,754 | $411.2M | 0.08% | −82,847−12.0% | Reduced |
| Charles Schwab Investment Management Inc | 590,062 | $399.2M | 0.06% | +14,132+2.5% | Added |
| Fundsmith Investment Services Ltd. | 553,859 | $374.7M | 6.86% | −134,498−19.5% | Reduced |
| Arrowstreet Capital, Limited Partnership | 550,368 | $372.3M | 0.22% | +365,274+197.3% | Added |
| Dimensional Fund Advisors LP | 549,750 | $371.9M | 0.08% | +5,565+1.0% | Added |
| Norges Bank | 491,131 | $332.3M | 0.04% | +491,131 | New |
| Bank of America Corp | 487,358 | $329.7M | 0.02% | −980−0.2% | Reduced |
| Nuveen, LLC | 466,130 | $315.4M | 0.08% | +17,876+4.0% | Added |
| William Blair Investment Management, LLC | 441,324 | $298.6M | 0.83% | −17,695−3.9% | Reduced |
| Nomura Asset Management International Inc. | 432,059 | $292.3M | 0.44% | +432,059 | New |
| Capital Counsel LLC | 427,043 | $288.9M | 11.03% | −5,647−1.3% | Reduced |
| Royal Bank of Canada | 398,323 | $269.5M | 0.05% | +60,573+17.9% | Added |
| CIBC Private Wealth Group, LLC | 362,871 | $245.5M | 0.41% | −7,668−2.1% | Reduced |
| Deutsche Bank AG | 357,539 | $241.9M | 0.08% | +4,747+1.3% | Added |
| Schroder Investment Management Group | 334,787 | $226.5M | 0.17% | +11,482+3.6% | Added |
| Railway Pension Investments Ltd | 326,080 | $220.6M | 2.59% | +29,550+10.0% | Added |
| Bessemer Group Inc | 311,349 | $210.6M | 0.32% | −40,919−11.6% | Reduced |
| KBC Group NV | 309,380 | $209.3M | 0.48% | +134,493+76.9% | Added |
| AustralianSuper Pty Ltd | 300,197 | $203.1M | 0.94% | +204,307+213.1% | Added |
| Clearbridge Investments, LLC | 292,948 | $198.2M | 0.16% | +12,101+4.3% | Added |
| UBS Group AG | 284,952 | $192.8M | 0.04% | −65,941−18.8% | Reduced |
| Neuberger Berman Group LLC | 274,797 | $185.9M | 0.14% | +653+0.2% | Added |
| TD Asset Management Inc | 267,850 | $181.2M | 0.15% | −36,340−11.9% | Reduced |
| Williams Jones Wealth Management, LLC. | 267,765 | $181.2M | 2.05% | −5,140−1.9% | Reduced |
| Raymond James Financial Inc | 256,352 | $174.3M | 0.05% | −16,239−6.0% | Reduced |
| FMR LLC | 251,407 | $170.1M | 0.01% | +18,361+7.9% | Added |
| Caisse de Depot Et Placement du Quebec | 248,701 | $168.3M | 0.29% | +94,495+61.3% | Added |
| First Trust Advisors LP | 236,111 | $159.7M | 0.12% | +5,924+2.6% | Added |
| Bank Julius Baer & Co. Ltd, Zurich | 231,808 | $157.1M | 0.43% | +1,369+0.6% | Added |
| Swiss National Bank | 219,180 | $148.3M | 0.09% | −12,720−5.5% | Reduced |
| Allianz Asset Management GmbH | 216,057 | $146.2M | 0.17% | +141,967+191.6% | Added |
| BNP Paribas Arbitrage, SA | 213,562 | $144.5M | 0.09% | +52,567+32.7% | Added |
| Barclays PLC | 211,438 | $143.0M | 0.06% | −25,232−10.7% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 209,106 | $141.5M | 0.08% | +8,626+4.3% | Added |
| Comgest Global Investors S.A.S. | 207,077 | $140.1M | 2.50% | −37,145−15.2% | Reduced |
| Wells Fargo & Company | 205,487 | $139.0M | 0.03% | +21,252+11.5% | Added |
| Victory Capital Management Inc | 205,340 | $138.9M | 0.08% | +6,778+3.4% | Added |
| Epoch Investment Partners, Inc. | 195,799 | $132.5M | 0.75% | −36,042−15.5% | Reduced |
| Russell Investments Group, Ltd. | 193,997 | $131.4M | 0.14% | +20,999+12.1% | Added |
| Lord, Abbett & Co. LLC | 187,009 | $126.5M | 0.39% | +119,182+175.7% | Added |
| Robeco Institutional Asset Management B.V. | 186,127 | $125.9M | 0.18% | −20,389−9.9% | Reduced |
| Canada Pension Plan Investment Board | 184,447 | $124.8M | 0.08% | +26,935+17.1% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 184,168 | $123.4M | 0.08% | +350+0.2% | Added |
| American Capital Management Inc | 181,745 | $123.0M | 5.43% | −2,553−1.4% | Reduced |
| Envestnet Asset Management Inc | 179,899 | $121.7M | 0.04% | −22,022−10.9% | Reduced |
| Los Angeles Capital Management LLC | 191,665 | $120.5M | 0.41% | +56,230+41.5% | Added |
| Ameriprise Financial Inc | 176,933 | $119.7M | 0.03% | −20,180−10.2% | Reduced |
| Rhumbline Advisers | 173,475 | $117.4M | 0.09% | −551−0.3% | Reduced |
| Montrusco Bolton Investments Inc. | 176,932 | $117.1M | 1.46% | −55,350−23.8% | Reduced |
| Pictet Asset Management Holding SA | 172,239 | $116.6M | 0.11% | −107,248−38.4% | Reduced |
| Welch & Forbes LLC | 168,282 | $113.8M | 1.38% | −644−0.4% | Reduced |
| TimesSquare Capital Management, LLC | 167,251 | $113.2M | 1.70% | −25,687−13.3% | Reduced |
| California Public Employees Retirement System | 162,589 | $110.0M | 0.06% | +5,019+3.2% | Added |
| HSBC Holdings PLC | 159,635 | $108.1M | 0.06% | −33,505−17.3% | Reduced |
| Prudential Financial Inc | 158,617 | $107.3M | 0.13% | −19,925−11.2% | Reduced |
| Congress Asset Management Co | 153,908 | $104.1M | 0.73% | +152,368+9,894.0% | Added |
| Liontrust Investment Partners LLP | 150,780 | $102.0M | 1.51% | −14,912−9.0% | Reduced |
| Westfield Capital Management Co LP | 147,447 | $99.8M | 0.42% | +53,318+56.6% | Added |
| ProShare Advisors LLC | 147,329 | $99.7M | 0.18% | +38,326+35.2% | Added |
| Federated Hermes, Inc. | 140,282 | $94.9M | 0.16% | +31,417+28.9% | Added |
| SEI Investments Co | 135,876 | $91.9M | 0.09% | +32,480+31.4% | Added |
| Bank of Montreal | 133,804 | $90.5M | 0.04% | −5,322−3.8% | Reduced |
| Select Equity Group, L.P. | 131,386 | $88.9M | 0.41% | −150,632−53.4% | Reduced |
| Loring Wolcott & Coolidge Fiduciary Advisors LLP | 124,045 | $86.2M | 0.78% | −3,066−2.4% | Reduced |
| EULAV Asset Management | 126,218 | $85.4M | 2.28% | −20.0% | Reduced |
| California State Teachers Retirement System | 125,402 | $84.8M | 0.08% | −1,258−1.0% | Reduced |
| Voya Investment Management LLC | 117,189 | $79.3M | 0.08% | +3,020+2.6% | Added |
| Citigroup Inc | 117,007 | $79.2M | 0.05% | −27,445−19.0% | Reduced |
| AQR Capital Management LLC | 114,775 | $77.6M | 0.04% | −20,379−15.1% | Reduced |
| CI Private Wealth, LLC | 114,625 | $77.6M | 0.11% | −1,552−1.3% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 114,154 | $77.4M | 0.13% | +909+0.8% | Added |
| Kayne Anderson Rudnick Investment Management LLC | 113,107 | $76.5M | 0.21% | −17,092−13.1% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 109,861 | $74.3M | 0.09% | +8,954+8.9% | Added |
| Rathbone Brothers plc | 108,872 | $73.7M | 0.29% | −8,697−7.4% | Reduced |
| Brown Advisory Inc | 107,572 | $72.8M | 0.10% | −1,245−1.1% | Reduced |
| National Pension Service | 106,344 | $71.9M | 0.05% | −10,749−9.2% | Reduced |
| LGT Capital Partners Ltd. | 105,998 | $71.7M | 3.56% | −14,327−11.9% | Reduced |
| Bradley Foster & Sargent Inc | 104,693 | $70.8M | 1.04% | −416−0.4% | Reduced |