| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 9.4% | $2,901,555,953 | 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 | -$1,426,822,413 | $638.89 | 1,282 |
| 2025 Q2 | 74,492,454 | $39,944,909,126 | +$622,390,391 | $536.34 | 1,224 |
| 2025 Q1 | 73,614,871 | $30,895,590,103 | +$783,052,148 | $419.95 | 1,124 |
| 2024 Q4 | 71,698,049 | $29,668,366,358 | -$542,112,501 | $413.44 | 1,100 |
| 2024 Q3 | 71,722,534 | $36,168,375,599 | -$1,429,561,827 | $505.22 | 1,098 |
| 2024 Q2 | 74,809,187 | $36,439,975,016 | +$1,678,522,290 | $487.20 | 1,090 |
| 2024 Q1 | 71,636,936 | $38,605,061,886 | -$654,012,730 | $539.93 | 1,134 |
| 2023 Q4 | 618,689 | $343,418,084 | -$71,482,869 | $555.05 | 17 |
| 2023 Q3 | 73,027,374 | $31,929,588,162 | +$380,630,545 | $437.27 | 1,039 |
| 2023 Q2 | 72,065,654 | $36,176,750,229 | -$361,041,033 | $502.23 | 1,043 |
| 2023 Q1 | 71,505,625 | $35,738,476,312 | -$335,067,699 | $500.08 | 1,025 |
| 2022 Q4 | 73,328,314 | $29,942,359,198 | +$152,565,360 | $407.96 | 964 |
| 2022 Q3 | 69,833,455 | $22,767,069,291 | +$96,661,228 | $325.80 | 871 |
| 2022 Q2 | 73,548,758 | $25,791,566,310 | +$442,557,426 | $350.73 | 920 |
| 2022 Q1 | 72,044,210 | $39,392,262,274 | +$494,091,566 | $547.06 | 995 |
| 2021 Q4 | 70,173,184 | $46,133,818,299 | -$186,640,870 | $658.46 | 1,071 |
| 2021 Q3 | 62,789,805 | $39,048,926,778 | -$1,156,298,722 | $621.90 | 1,042 |
| 2021 Q2 | 71,992,572 | $45,462,586,279 | +$134,947,712 | $631.55 | 1,011 |
| 2021 Q1 | 72,202,421 | $35,326,218,339 | -$386,930,873 | $489.31 | 995 |
| 2020 Q4 | 73,496,456 | $36,716,345,277 | +$244,994,598 | $499.87 | 946 |
| 2020 Q3 | 65,500,805 | $25,726,737,674 | -$683,503,489 | $393.11 | 828 |
| 2020 Q2 | 66,173,293 | $21,845,916,428 | -$238,235,357 | $330.16 | 780 |
| 2020 Q1 | 75,464,992 | $18,278,917,910 | +$317,646,961 | $242.24 | 731 |
| 2019 Q4 | 74,331,536 | $19,408,671,560 | -$136,608,724 | $261.13 | 736 |
| 2019 Q3 | 74,812,102 | $20,341,884,422 | -$166,005,051 | $271.93 | 705 |
| 2019 Q2 | 74,574,799 | $20,530,912,213 | +$338,134,331 | $275.33 | 694 |
| 2019 Q1 | 75,605,325 | $16,905,413,347 | +$141,740,000 | $223.60 | 666 |
| 2018 Q4 | 70,793,046 | $13,169,116,048 | +$173,174,175 | $186.02 | 655 |
| 2018 Q3 | 74,198,801 | $18,521,962,311 | -$145,401,937 | $249.66 | 682 |
| 2018 Q2 | 79,539,686 | $17,333,684,464 | -$17,851,947 | $217.94 | 651 |
| 2018 Q1 | 75,299,447 | $14,408,368,610 | +$29,882,248 | $191.39 | 635 |
| 2017 Q4 | 76,278,322 | $11,926,489,935 | -$2,291,880,498 | $156.38 | 603 |
| 2017 Q3 | 71,899,393 | $11,179,358,434 | -$66,722,399 | $155.49 | 565 |
| 2017 Q2 | 76,985,043 | $12,428,178,061 | -$168,019,755 | $161.42 | 572 |
| 2017 Q1 | 78,677,171 | $12,157,982,005 | +$1,320,542,392 | $154.61 | 528 |
| 2016 Q4 | 78,002,741 | $9,151,021,342 | -$400,760,404 | $117.27 | 510 |
| 2016 Q3 | 81,568,872 | $9,191,319,499 | -$94,151,684 | $112.73 | 466 |
| 2016 Q2 | 81,629,832 | $7,580,096,605 | -$374,524,898 | $92.86 | 428 |
| 2016 Q1 | 86,897,438 | $6,804,507,287 | -$230,890,228 | $78.32 | 367 |
| 2015 Q4 | 88,665,740 | $6,465,235,487 | -$74,454,545 | $72.92 | 342 |
| 2015 Q3 | 90,783,033 | $6,739,334,682 | -$82,001,035 | $74.25 | 349 |
| 2015 Q2 | 89,767,287 | $5,757,538,294 | +$2,810,221,238 | $64.14 | 344 |
| 2015 Q1 | 44,784,964 | $6,914,660,385 | -$72,802,160 | $154.48 | 339 |
| 2014 Q4 | 46,302,363 | $6,868,103,193 | -$170,176,575 | $148.27 | 345 |
| 2014 Q3 | 47,689,506 | $5,619,296,343 | -$92,027,043 | $117.83 | 313 |
| 2014 Q2 | 48,342,928 | $6,456,581,609 | -$301,107,262 | $133.57 | 305 |
| 2014 Q1 | 50,628,842 | $6,146,282,012 | -$72,423,259 | $121.40 | 311 |