Idexx LaboratoriesIDXX
13F holders, Q3 2025 (September 30)1,303holders +69
150new positions
73sold out
11famous investors
$638.52avg. 13F price*
At the end of Q3 2025, 1,303 institutions reported holding Idexx Laboratories Inc. (IDXX) in their 13F filings, up 69 from Q2 2025. 150 opened new positions and 73 sold out. The largest holders were Vanguard Group Inc. ($6.4B), BlackRock, Inc. ($5.2B) and State Street Corp. ($2.2B). 11 famous investors held it, including Terry Smith (8.4% of Fundsmith's portfolio), Ron Baron (3.2% of Baron Capital (BAMCO)'s portfolio) and Joel Greenblatt (0.1% of Gotham Asset Management's portfolio).
- Company
- Idexx Laboratories Inc.
- Sector
- Health Care
- CUSIP
- 45168D104
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 150 | $303.2M |
| Exits | 73 | $304.0M |
All 13F filers, Q2 2025 → Q3 2025: 3,751,900 shares bought and 5,603,144 shares sold, net −1,851,244 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 1,303 holders
| Vanguard Group Inc. | 0.10% | Add +0.9% | 9,962,025 | $6.4B |
| BlackRock, Inc. | 0.09% | Reduce -2.0% | 8,205,011 | $5.2B |
| State Street Corp. | 0.08% | Reduce -1.0% | 3,517,670 | $2.2B |
| Fundsmith | 8.43% | Reduce -1.1% | 2,610,457 | $1.7B |
| Geode Capital Management, LLC | 0.10% | Add +1.4% | 2,497,676 | $1.6B |
| Bank of New York Mellon Corp | 0.24% | Add +41.7% | 2,056,680 | $1.3B |
| Baron Capital (BAMCO) | 3.19% | Reduce -7.3% | 1,884,129 | $1.2B |
| Morgan Stanley | 0.06% | Reduce -2.5% | 1,622,490 | $1.0B |
| Invesco Ltd. | 0.13% | Add +14.0% | 1,320,263 | $843.5M |
| Principal Financial Group Inc. | 0.42% | Add +16.7% | 1,315,722 | $840.6M |
| Polen Capital Management LLC | 2.34% | Reduce -5.7% | 1,127,147 | $720.1M |
| Blair William & Co. | 1.75% | Reduce -4.5% | 1,031,786 | $659.2M |
| Northern Trust Corp. | 0.08% | Reduce -1.5% | 942,368 | $602.1M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.12% | Reduce -18.2% | 875,549 | $559.4M |
| JPMorgan Chase & Co. | 0.04% | Add +60.0% | 869,930 | $555.8M |
| Goldman Sachs Group Inc. | 0.07% | Add +20.9% | 711,942 | $454.9M |
| American Century Companies Inc. | 0.23% | Reduce -17.4% | 705,158 | $450.5M |
| T. Rowe Price Associates Inc. | 0.05% | Add +29.5% | 694,208 | $443.5M |
| Capital Research Global Investors | 0.08% | Add +0.8% | 690,601 | $441.2M |
| Fundsmith Investment Services LTD. | 6.85% | Reduce -18.5% | 688,357 | $439.8M |
| Legal & General Group Plc | 0.10% | Add +4.2% | 675,535 | $431.6M |
| Amundi | 0.12% | Reduce -12.3% | 592,599 | $372.0M |
| Charles Schwab Investment Management Inc. | 0.06% | Add +3.5% | 575,930 | $368.0M |
| Franklin Resources Inc. | 0.09% | Reduce -3.3% | 572,978 | $366.1M |
| Dimensional Fund Advisors LP | 0.07% | Reduce -2.3% | 544,185 | $347.6M |
| Macquarie Group Ltd. | 0.39% | Reduce -12.5% | 526,630 | $336.5M |
| Bank of America Corp. | 0.02% | Reduce -1.2% | 488,338 | $312.0M |
| William Blair Investment Management, LLC | 0.76% | Reduce -33.0% | 459,019 | $293.3M |
| Nuveen, LLC | 0.08% | Reduce -3.0% | 448,254 | $286.4M |
| Capital Counsel LLC | 10.60% | Reduce -6.1% | 432,690 | $276.4M |
| CIBC Private Wealth Group LLC | 0.41% | Reduce -1.1% | 370,539 | $236.7M |
| Deutsche Bank AG | 0.08% | Add +7.2% | 352,792 | $225.4M |
| Bessemer Group Inc. | 0.34% | Reduce -7.7% | 352,268 | $225.1M |
| UBS Group AG | 0.04% | Reduce -5.9% | 350,893 | $224.2M |
| Royal Bank of Canada | 0.04% | Reduce -17.3% | 337,750 | $215.8M |
| Schroder Investment Management Group | 0.16% | Add +2.4% | 323,305 | $203.9M |
| TD Asset Management Inc | 0.16% | Reduce -7.7% | 304,190 | $194.3M |
| Railway Pension Investments Ltd | 2.57% | Add +92.1% | 296,530 | $189.5M |
| Select Equity Group, L.P. | 0.77% | Reduce -50.8% | 282,018 | $180.2M |
| Clearbridge Investments, LLC | 0.14% | Reduce -1.0% | 280,847 | $179.4M |
| Pictet Asset Management Holding SA | 0.17% | Reduce -15.4% | 279,487 | $178.5M |
| Neuberger Berman Group LLC | 0.13% | Reduce -21.9% | 274,144 | $175.1M |
| Williams Jones Wealth Management, LLC. | 2.00% | Reduce -1.6% | 272,905 | $174.4M |
| Raymond James Financial Inc. | 0.06% | Add +29.3% | 272,591 | $174.2M |
| Generation Investment Management LLP | 1.10% | Reduce -54.1% | 260,394 | $166.4M |
| Comgest Global Investors S.A.S. | 2.76% | Add +0.1% | 244,222 | $156.0M |
| Barclays PLC | 0.06% | Reduce -22.4% | 236,670 | $151.2M |
| FMR LLC | 0.01% | Reduce -13.7% | 233,046 | $148.9M |
| Swiss National Bank | 0.09% | Reduce -5.5% | 231,900 | $148.2M |
| Epoch Investment Partners, Inc. | 0.81% | Reduce -7.5% | 231,841 | $148.1M |
| Bank Julius Baer & Co. Ltd, Zurich | 0.41% | Reduce -1.2% | 230,439 | $147.2M |
| First Trust Advisors LP | 0.11% | Reduce -9.6% | 230,187 | $147.1M |
| Montrusco Bolton Investments Inc. | 1.69% | Reduce -45.9% | 232,282 | $145.6M |
| Zurich Insurance Group Ltd | 1.03% | New | 224,968 | $143.7M |
| Robeco Institutional Asset Management B.V. | 0.19% | Reduce -0.3% | 206,516 | $131.9M |
| Envestnet Asset Management Inc. | 0.04% | Reduce -12.6% | 201,921 | $129.0M |
| Sumitomo Mitsui Trust Group, Inc. | 0.07% | Reduce -0.7% | 200,480 | $128.1M |
| Victory Capital Management Inc. | 0.07% | Add +7.6% | 198,562 | $126.9M |
| Ameriprise Financial Inc. | 0.03% | Reduce -8.7% | 197,113 | $126.0M |
| TimesSquare Capital Management, LLC | 1.76% | Reduce -4.1% | 192,938 | $123.3M |
| HSBC Holdings PLC | 0.07% | Reduce -13.8% | 193,140 | $123.2M |
| Wellington Management Group LLP | 0.02% | Reduce -0.9% | 186,380 | $119.1M |
| Arrowstreet Capital, Limited Partnership | 0.07% | Reduce -10.2% | 185,094 | $118.3M |
| American Capital Management Inc. | 4.69% | Reduce -2.5% | 184,298 | $117.7M |
| Wells Fargo & Company | 0.02% | Add +7.5% | 184,235 | $117.7M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.08% | Add +3.8% | 183,818 | $117.4M |
| Prudential Financial Inc. | 0.14% | Add +182.9% | 178,542 | $114.1M |
| KBC Group NV | 0.27% | Add +104.2% | 174,887 | $111.7M |
| Rhumbline Advisers | 0.09% | Reduce -3.1% | 174,026 | $111.2M |
| Russell Investments Group, Ltd. | 0.13% | Reduce -5.1% | 172,998 | $110.4M |
| Welch & Forbes LLC | 1.30% | Reduce -0.1% | 168,926 | $107.9M |
| Liontrust Investment Partners LLP | 1.55% | Reduce -5.6% | 165,692 | $105.9M |
| BNP Paribas Financial Markets | 0.08% | Reduce -7.9% | 160,995 | $102.9M |
| California Public Employees Retirement System | 0.06% | Add +6.2% | 157,570 | $100.7M |
| Canada Pension Plan Investment Board | 0.07% | Add +85.9% | 157,512 | $100.6M |
| Caisse de depot et placement du Quebec | 0.18% | Reduce -14.8% | 154,206 | $98.5M |
| Vontobel Holding Ltd. | 0.30% | Reduce -64.4% | 147,384 | $94.2M |
| Citigroup Inc. | 0.06% | Add +5.6% | 144,452 | $92.3M |
| Seilern Investment Management Ltd | 6.52% | Reduce -33.4% | 141,276 | $90.3M |
| Bank of Montreal | 0.04% | Add +14.9% | 139,126 | $88.9M |
| Los Angeles Capital Management LLC | 0.29% | Add +32.5% | 135,435 | $86.5M |
| AQR Capital Management | 0.05% | Reduce -39.5% | 135,154 | $85.4M |
| Fiera Capital Corp | 0.27% | Reduce -2.7% | 130,521 | $83.4M |
| Kayne Anderson Rudnick Investment Management LLC | 0.20% | Add +17.3% | 130,199 | $83.2M |
| Loring Wolcott & Coolidge Fiduciary Advisors LLP | 0.71% | Reduce -3.5% | 127,111 | $81.2M |
| California State Teachers Retirement System | 0.08% | Reduce -1.7% | 126,660 | $80.9M |
| EULAV Asset Management | 1.87% | Add +0.0% | 126,220 | $80.6M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.15% | Add +107.3% | 126,165 | $80.6M |
| LGT Capital Partners LTD. | 3.73% | Reduce -19.6% | 120,325 | $76.9M |
| Rathbones Group PLC | 0.30% | Reduce -14.3% | 117,569 | $75.1M |
| National Pension Service | 0.06% | Add +2.4% | 117,093 | $74.8M |
| Corient Private Wealth LP | 0.12% | Reduce -1.1% | 116,177 | $74.2M |
| Voya Investment Management LLC | 0.08% | Reduce -23.2% | 114,169 | $72.9M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.12% | Reduce -34.7% | 113,245 | $72.4M |
| Flossbach Von Storch SE | 0.28% | Reduce -54.2% | 110,534 | $70.6M |
| ProShare Advisors LLC | 0.15% | Reduce -19.6% | 109,003 | $69.6M |
| Federated Hermes, Inc. | 0.12% | Add +269.7% | 108,865 | $69.6M |
| Brown Advisory Inc. | 0.09% | Add +0.1% | 108,817 | $69.5M |
| Frontier Capital Management Co. LLC | 0.62% | Reduce -0.7% | 108,302 | $69.2M |
| Bradley Foster & Sargent Inc. | 0.99% | Add +0.4% | 105,109 | $67.2M |
"% of holder's portfolio" is IDXX's weight in each manager's 13F, not the share of Idexx Laboratories Inc. the manager owns.