| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 9.4% | $3,297,923,861 | 7,599,078 | BlackRock, Inc. | 31 Mar 2025 |
As of 30 Sep 2025, 1,282 institutional investors reported holding 71,945,340 shares of IDEXX LABORATORIES INC /DE - Common Stock (IDXX). This represents 89% of the company’s total 80,841,255 outstanding shares.
The largest institutional shareholders of IDEXX LABORATORIES INC /DE - Common Stock (IDXX) together control 57% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| VANGUARD GROUP INC | 12% | 9,962,025 | +0.87% | 0.1% | $6,364,638,153 |
| BlackRock, Inc. | 10% | 8,205,011 | -2% | 0.09% | $5,242,099,447 |
| STATE STREET CORP | 4.4% | 3,517,670 | -1% | 0.08% | $2,247,404,186 |
| Fundsmith LLP | 3.2% | 2,610,457 | -1.1% | 8.4% | $1,667,794,873 |
| GEODE CAPITAL MANAGEMENT, LLC | 3.1% | 2,497,676 | +1.4% | 0.1% | $1,591,098,712 |
| Bank of New York Mellon Corp | 2.5% | 2,056,680 | +42% | 0.24% | $1,313,992,065 |
| BAMCO INC /NY/ | 2.3% | 1,884,129 | -7.3% | 3.2% | $1,203,751,177 |
| MORGAN STANLEY | 2% | 1,622,490 | -2.5% | 0.06% | $1,036,595,623 |
| Invesco Ltd. | 1.6% | 1,320,263 | +14% | 0.13% | $843,502,663 |
| PRINCIPAL FINANCIAL GROUP INC | 1.6% | 1,315,722 | +17% | 0.42% | $840,638,344 |
| POLEN CAPITAL MANAGEMENT LLC | 1.4% | 1,127,147 | -5.7% | 2.3% | $720,123,065 |
| BLAIR WILLIAM & CO/IL | 1.3% | 1,031,786 | -4.5% | 1.8% | $659,197,463 |
| NORTHERN TRUST CORP | 1.2% | 942,368 | -1.5% | 0.08% | $602,069,492 |
| UBS AM, A DISTINCT BUSINESS UNIT OF UBS ASSET MANAGEMENT AMERICAS LLC | 1.1% | 875,549 | -18% | 0.12% | $559,379,500 |
| JPMORGAN CHASE & CO | 1.1% | 869,930 | +60% | 0.04% | $555,801,572 |
| GOLDMAN SACHS GROUP INC | 0.88% | 711,942 | +21% | 0.07% | $454,852,946 |
| AMERICAN CENTURY COMPANIES INC | 0.87% | 705,158 | -17% | 0.23% | $450,518,395 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 0.86% | 694,208 | +29% | 0.05% | $443,524,000 |
| Capital Research Global Investors | 0.85% | 690,601 | +0.82% | 0.08% | $441,218,073 |
| FUNDSMITH INVESTMENT SERVICES LTD. | 0.85% | 688,357 | -19% | 6.9% | $439,784,404 |
| Legal & General Group Plc | 0.84% | 675,535 | +4.1% | 0.1% | $431,592,555 |
| Amundi | 0.73% | 592,599 | -12% | 0.12% | $372,021,801 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.71% | 575,930 | +3.5% | 0.06% | $367,955,918 |
| FRANKLIN RESOURCES INC | 0.71% | 572,978 | -3.3% | 0.09% | $366,069,631 |
| DIMENSIONAL FUND ADVISORS LP | 0.67% | 544,185 | -2.3% | 0.07% | $347,641,219 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 751,941 | $509,684,885 | +$92,878,677 | $676.53 | 85 |
| 2025 Q3 | 71,945,340 | $45,941,105,840 | -$1,426,822,438 | $638.89 | 1,282 |
| 2025 Q2 | 74,492,454 | $39,944,909,126 | +$622,390,438 | $536.34 | 1,224 |
| 2025 Q1 | 73,764,672 | $30,958,486,481 | +$779,942,482 | $419.95 | 1,129 |
| 2024 Q4 | 71,835,659 | $29,724,021,447 | -$973,691,253 | $413.44 | 1,115 |
| 2024 Q3 | 72,771,836 | $36,698,542,671 | -$866,484,087 | $505.22 | 1,105 |
| 2024 Q2 | 74,742,498 | $36,407,539,797 | +$1,194,076,623 | $487.20 | 1,100 |
| 2024 Q1 | 72,528,628 | $39,086,467,213 | -$62,993,917 | $539.93 | 1,141 |
| 2023 Q4 | 72,729,572 | $40,349,913,998 | -$603,765,389 | $555.05 | 1,143 |
| 2023 Q3 | 74,019,658 | $32,363,649,715 | +$430,812,418 | $437.27 | 1,056 |
| 2023 Q2 | 73,042,621 | $36,667,385,940 | +$94,841,652 | $502.23 | 1,059 |
| 2023 Q1 | 72,713,915 | $36,334,265,012 | -$355,801,839 | $500.08 | 1,046 |
| 2022 Q4 | 73,497,514 | $30,011,391,318 | +$172,319,687 | $407.96 | 982 |
| 2022 Q3 | 73,626,131 | $24,002,744,883 | -$83,281,427 | $325.80 | 900 |
| 2022 Q2 | 73,767,652 | $25,881,144,178 | +$454,367,814 | $350.73 | 940 |
| 2022 Q1 | 72,572,264 | $39,690,896,632 | +$485,420,646 | $547.06 | 1,013 |
| 2021 Q4 | 71,508,034 | $47,013,671,922 | -$115,610,874 | $658.46 | 1,084 |
| 2021 Q3 | 71,564,445 | $44,507,146,691 | -$836,578,782 | $621.90 | 1,055 |
| 2021 Q2 | 72,890,084 | $46,029,916,801 | +$144,499,493 | $631.55 | 1,021 |
| 2021 Q1 | 72,631,314 | $35,536,251,001 | -$362,776,244 | $489.31 | 1,004 |
| 2020 Q4 | 73,683,435 | $36,820,146,126 | +$237,064,045 | $499.87 | 957 |
| 2020 Q3 | 73,270,641 | $28,787,297,170 | -$575,176,884 | $393.11 | 835 |
| 2020 Q2 | 74,703,783 | $24,698,206,219 | -$351,542,875 | $330.16 | 788 |
| 2020 Q1 | 75,867,270 | $18,376,382,067 | +$291,732,808 | $242.24 | 739 |
| 2019 Q4 | 74,418,598 | $19,431,403,452 | -$142,779,457 | $261.13 | 745 |
| 2019 Q3 | 74,857,557 | $20,354,241,028 | -$168,074,478 | $271.93 | 711 |
| 2019 Q2 | 75,445,232 | $20,769,443,657 | +$102,922,643 | $275.33 | 704 |
| 2019 Q1 | 76,138,903 | $17,024,720,869 | +$138,025,921 | $223.60 | 674 |
| 2018 Q4 | 71,201,603 | $13,245,107,465 | +$160,819,000 | $186.02 | 661 |
| 2018 Q3 | 74,466,337 | $18,588,758,229 | -$154,218,194 | $249.66 | 687 |
| 2018 Q2 | 79,592,778 | $17,345,258,239 | -$263,188,794 | $217.94 | 656 |
| 2018 Q1 | 76,258,995 | $14,592,016,610 | +$65,147,323 | $191.39 | 639 |
| 2017 Q4 | 76,285,245 | $11,928,011,765 | -$95,029,002 | $156.38 | 605 |
| 2017 Q3 | 76,358,980 | $11,868,339,082 | -$66,961,009 | $155.49 | 570 |
| 2017 Q2 | 77,242,563 | $12,469,740,345 | -$154,025,637 | $161.42 | 577 |
| 2017 Q1 | 79,021,291 | $12,211,187,005 | +$1,416,402,753 | $154.61 | 533 |
| 2016 Q4 | 78,092,711 | $9,161,802,342 | -$400,720,232 | $117.27 | 514 |
| 2016 Q3 | 81,599,118 | $9,194,716,689 | -$104,867,796 | $112.73 | 472 |
| 2016 Q2 | 82,484,516 | $7,660,607,605 | -$373,404,549 | $92.86 | 432 |
| 2016 Q1 | 86,960,429 | $6,809,529,287 | -$233,929,280 | $78.32 | 369 |
| 2015 Q4 | 89,930,874 | $6,557,487,487 | -$72,543,183 | $72.92 | 345 |
| 2015 Q3 | 91,025,347 | $6,757,325,682 | -$65,778,945 | $74.25 | 351 |
| 2015 Q2 | 90,496,455 | $5,804,305,294 | +$2,820,875,260 | $64.14 | 345 |
| 2015 Q1 | 45,808,495 | $7,072,744,385 | -$67,169,242 | $154.48 | 339 |
| 2014 Q4 | 46,302,363 | $6,868,103,193 | -$170,187,877 | $148.27 | 345 |
| 2014 Q3 | 47,691,812 | $5,619,567,343 | -$92,106,412 | $117.83 | 314 |
| 2014 Q2 | 48,342,928 | $6,456,581,609 | -$316,805,338 | $133.57 | 304 |
| 2014 Q1 | 50,628,842 | $6,146,282,012 | -$73,672,510 | $121.40 | 310 |