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 |
|---|---|---|---|---|---|
| Select Equity Group, L.P. | 131,386 | $88.9M | 0.41% | −150,632−53.4% | Reduced |
| Bank of Montreal | 133,804 | $90.5M | 0.04% | −5,322−3.8% | Reduced |
| SEI Investments Co | 135,876 | $91.9M | 0.09% | +32,480+31.4% | Added |
| Federated Hermes, Inc. | 140,282 | $94.9M | 0.16% | +31,417+28.9% | Added |
| ProShare Advisors LLC | 147,329 | $99.7M | 0.18% | +38,326+35.2% | Added |
| Westfield Capital Management Co LP | 147,447 | $99.8M | 0.42% | +53,318+56.6% | Added |
| Liontrust Investment Partners LLP | 150,780 | $102.0M | 1.51% | −14,912−9.0% | Reduced |
| Congress Asset Management Co | 153,908 | $104.1M | 0.73% | +152,368+9,894.0% | Added |
| Prudential Financial Inc | 158,617 | $107.3M | 0.13% | −19,925−11.2% | Reduced |
| HSBC Holdings PLC | 159,635 | $108.1M | 0.06% | −33,505−17.3% | Reduced |
| California Public Employees Retirement System | 162,589 | $110.0M | 0.06% | +5,019+3.2% | Added |
| TimesSquare Capital Management, LLC | 167,251 | $113.2M | 1.70% | −25,687−13.3% | Reduced |
| Welch & Forbes LLC | 168,282 | $113.8M | 1.38% | −644−0.4% | Reduced |
| Pictet Asset Management Holding SA | 172,239 | $116.6M | 0.11% | −107,248−38.4% | Reduced |
| Montrusco Bolton Investments Inc. | 176,932 | $117.1M | 1.46% | −55,350−23.8% | Reduced |
| Rhumbline Advisers | 173,475 | $117.4M | 0.09% | −551−0.3% | Reduced |
| Ameriprise Financial Inc | 176,933 | $119.7M | 0.03% | −20,180−10.2% | Reduced |
| Los Angeles Capital Management LLC | 191,665 | $120.5M | 0.41% | +56,230+41.5% | Added |
| Envestnet Asset Management Inc | 179,899 | $121.7M | 0.04% | −22,022−10.9% | Reduced |
| American Capital Management Inc | 181,745 | $123.0M | 5.43% | −2,553−1.4% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 184,168 | $123.4M | 0.08% | +350+0.2% | Added |
| Canada Pension Plan Investment Board | 184,447 | $124.8M | 0.08% | +26,935+17.1% | Added |
| Robeco Institutional Asset Management B.V. | 186,127 | $125.9M | 0.18% | −20,389−9.9% | Reduced |
| Lord, Abbett & Co. LLC | 187,009 | $126.5M | 0.39% | +119,182+175.7% | Added |
| Russell Investments Group, Ltd. | 193,997 | $131.4M | 0.14% | +20,999+12.1% | Added |
| Epoch Investment Partners, Inc. | 195,799 | $132.5M | 0.75% | −36,042−15.5% | Reduced |
| Victory Capital Management Inc | 205,340 | $138.9M | 0.08% | +6,778+3.4% | Added |
| Wells Fargo & Company | 205,487 | $139.0M | 0.03% | +21,252+11.5% | Added |
| Comgest Global Investors S.A.S. | 207,077 | $140.1M | 2.50% | −37,145−15.2% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 209,106 | $141.5M | 0.08% | +8,626+4.3% | Added |
| Barclays PLC | 211,438 | $143.0M | 0.06% | −25,232−10.7% | Reduced |
| BNP Paribas Arbitrage, SA | 213,562 | $144.5M | 0.09% | +52,567+32.7% | Added |
| Allianz Asset Management GmbH | 216,057 | $146.2M | 0.17% | +141,967+191.6% | Added |
| Swiss National Bank | 219,180 | $148.3M | 0.09% | −12,720−5.5% | Reduced |
| Bank Julius Baer & Co. Ltd, Zurich | 231,808 | $157.1M | 0.43% | +1,369+0.6% | Added |
| First Trust Advisors LP | 236,111 | $159.7M | 0.12% | +5,924+2.6% | Added |
| Caisse de Depot Et Placement du Quebec | 248,701 | $168.3M | 0.29% | +94,495+61.3% | Added |
| FMR LLC | 251,407 | $170.1M | 0.01% | +18,361+7.9% | Added |
| Raymond James Financial Inc | 256,352 | $174.3M | 0.05% | −16,239−6.0% | Reduced |
| Williams Jones Wealth Management, LLC. | 267,765 | $181.2M | 2.05% | −5,140−1.9% | Reduced |
| TD Asset Management Inc | 267,850 | $181.2M | 0.15% | −36,340−11.9% | Reduced |
| Neuberger Berman Group LLC | 274,797 | $185.9M | 0.14% | +653+0.2% | Added |
| UBS Group AG | 284,952 | $192.8M | 0.04% | −65,941−18.8% | Reduced |
| Clearbridge Investments, LLC | 292,948 | $198.2M | 0.16% | +12,101+4.3% | Added |
| AustralianSuper Pty Ltd | 300,197 | $203.1M | 0.94% | +204,307+213.1% | Added |
| KBC Group NV | 309,380 | $209.3M | 0.48% | +134,493+76.9% | Added |
| Bessemer Group Inc | 311,349 | $210.6M | 0.32% | −40,919−11.6% | Reduced |
| Railway Pension Investments Ltd | 326,080 | $220.6M | 2.59% | +29,550+10.0% | Added |
| Schroder Investment Management Group | 334,787 | $226.5M | 0.17% | +11,482+3.6% | Added |
| Deutsche Bank AG | 357,539 | $241.9M | 0.08% | +4,747+1.3% | Added |
| CIBC Private Wealth Group, LLC | 362,871 | $245.5M | 0.41% | −7,668−2.1% | Reduced |
| Royal Bank of Canada | 398,323 | $269.5M | 0.05% | +60,573+17.9% | Added |
| Capital Counsel LLC | 427,043 | $288.9M | 11.03% | −5,647−1.3% | Reduced |
| Nomura Asset Management International Inc. | 432,059 | $292.3M | 0.44% | +432,059 | New |
| William Blair Investment Management, LLC | 441,324 | $298.6M | 0.83% | −17,695−3.9% | Reduced |
| Nuveen, LLC | 466,130 | $315.4M | 0.08% | +17,876+4.0% | Added |
| Bank of America Corp | 487,358 | $329.7M | 0.02% | −980−0.2% | Reduced |
| Norges Bank | 491,131 | $332.3M | 0.04% | +491,131 | New |
| Dimensional Fund Advisors LP | 549,750 | $371.9M | 0.08% | +5,565+1.0% | Added |
| Arrowstreet Capital, Limited Partnership | 550,368 | $372.3M | 0.22% | +365,274+197.3% | Added |
| Fundsmith Investment Services Ltd. | 553,859 | $374.7M | 6.86% | −134,498−19.5% | Reduced |
| Charles Schwab Investment Management Inc | 590,062 | $399.2M | 0.06% | +14,132+2.5% | Added |
| Capital Research Global Investors | 607,754 | $411.2M | 0.08% | −82,847−12.0% | Reduced |
| Amundi | 618,743 | $418.6M | 0.11% | +26,144+4.4% | Added |
| Franklin Resources Inc | 627,159 | $424.3M | 0.10% | +54,181+9.5% | Added |
| American Century Companies Inc | 628,934 | $425.5M | 0.21% | −76,224−10.8% | Reduced |
| Legal & General Group Plc | 670,614 | $453.7M | 0.10% | −4,921−0.7% | Reduced |
| JPMorgan Chase & Co | 673,228 | $455.5M | 0.03% | −196,702−22.6% | Reduced |
| Wellington Management Group LLP | 779,214 | $527.2M | 0.09% | +592,834+318.1% | Added |
| Goldman Sachs Group Inc | 832,189 | $563.0M | 0.08% | +120,247+16.9% | Added |
| UBS Asset Management Americas Inc | 859,887 | $581.7M | 0.12% | −15,662−1.8% | Reduced |
| Northern Trust Corp | 923,152 | $624.5M | 0.08% | −19,216−2.0% | Reduced |
| Price T Rowe Associates Inc | 952,223 | $644.2M | 0.07% | +258,015+37.2% | Added |
| Polen Capital Management LLC | 960,537 | $649.8M | 2.78% | −166,610−14.8% | Reduced |
| Principal Financial Group Inc | 968,946 | $655.6M | 0.33% | −346,776−26.4% | Reduced |
| Blair William & Co | 1,001,375 | $677.5M | 1.82% | −30,411−2.9% | Reduced |
| Morgan Stanley | 1,553,731 | $1.05B | 0.06% | −68,759−4.2% | Reduced |
| Bank of New York Mellon Corp | 1,624,469 | $1.10B | 0.19% | −432,211−21.0% | Reduced |
| Bamco Inc | 1,798,041 | $1.22B | 3.30% | −86,088−4.6% | Reduced |
| Fundsmith LLPSuperinvestorFundsmith | 1,876,035 | $1.27B | 7.42% | −734,422−28.1% | Reduced |
| Geode Capital Management, LLC | 2,583,939 | $1.75B | 0.11% | +86,263+3.5% | Added |
| Invesco Ltd. | 3,296,177 | $2.23B | 0.21% | +1,975,914+149.7% | Added |
| State Street Corp | 3,656,626 | $2.47B | 0.08% | +138,956+4.0% | Added |
| BlackRock, Inc. | 8,534,886 | $5.77B | 0.10% | +329,875+4.0% | Added |
| Vanguard Group Inc | 9,945,328 | $6.73B | 0.10% | −16,697−0.2% | Reduced |
| Generation Investment Management LLP | 0 | $0 | 0.00% | −260,394−100.0% | Sold out |
| Waycross Partners, LLC | 0 | $0 | 0.00% | −43,471−100.0% | Sold out |
| Lountzis Asset Management, LLC | 0 | $0 | 0.00% | −32,708−100.0% | Sold out |
| Tang Capital Management LLC | 0 | $0 | 0.00% | −16,000−100.0% | Sold out |
| Segall Bryant & Hamill, LLC | 0 | $0 | 0.00% | −14,343−100.0% | Sold out |
| Kovitz Investment Group Partners, LLC | 0 | $0 | 0.00% | −11,794−100.0% | Sold out |
| Alta Capital Management LLC | 0 | $0 | 0.00% | −10,202−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −8,299−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −8,291−100.0% | Sold out |
| Munich Reinsurance Co Stock Corp in Munich | 0 | $0 | 0.00% | −7,812−100.0% | Sold out |
| Bayesian Capital Management, LP | 0 | $0 | 0.00% | −7,200−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −6,614−100.0% | Sold out |
| Camarda Financial Advisors, LLC | 0 | $0 | 0.00% | −5,098−100.0% | Sold out |
| Mirabella Financial Services LLP | 0 | $0 | 0.00% | −4,401−100.0% | Sold out |
| United Super Pty Ltd in its capacity as Trustee for the Construction & Building Unions Superannuation Fund | 0 | $0 | 0.00% | −4,100−100.0% | Sold out |