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IDXX

Idexx Laboratories Inc /De
$564.21 +0.64 (+0.11%) At close · Jul 13
Market Cap
$42.65B
Shares
78,882,997

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 1,301
Total Value: $38,219,572,832
Total Shares: 68,090,613
Showing 1–100 of 1,325 holdings by value · page 1 of 14

Institutional Ownership Trend

26 quarters

Superinvestors Holding IDXX

All superinvestors →
Terry Smith $823,610,495 Joel Greenblatt $45,219,221 Wally Weitz $19,834,717 Ray Dalio $5,795,333 Bill Nygren $270,830

Holder Concentration

Across 1,309 13F filers
Top Holder
12.3%
Jun 2023 → Mar 2026 · range 11.7% – 13.7%
of institutional value
Top 5
31.8%
Jun 2023 → Mar 2026 · range 31.8% – 38.5%
of institutional value
Top 10
41.9%
Jun 2023 → Mar 2026 · range 41.9% – 49.4%
of institutional value
HHI
312
Jun 2023 → Mar 2026 · range 312 – 441
Broadly held
Showing 100 of 1,325
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $4,700,520,563 12.30% 8,365,553
Mega VANGUARD CAPITAL MANAGEMENT LLC $2,911,998,858 7.62% 5,182,507
Mega STATE STREET CORP $2,064,487,809 5.40% 3,674,185
Mega GEODE CAPITAL MANAGEMENT, LLC $1,495,188,727 3.91% 2,660,999
Mega Invesco Ltd. $943,163,819 2.47% 1,678,556
Large BAMCO INC /NY/ $917,772,583 2.40% 1,633,367
Mega Bank of New York Mellon Corp Bank $845,381,471 2.21% 1,504,532
Large Fundsmith LLP $823,610,495 2.15% 1,465,786
Mega MORGAN STANLEY $739,421,381 1.93% 1,315,954
Large BLAIR WILLIAM & CO/IL $531,736,735 1.39% 946,336
Mega NORTHERN TRUST CORP Bank $512,383,551 1.34% 911,893
Mega PRINCIPAL FINANCIAL GROUP INC $495,131,285 1.30% 881,189
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $489,849,516 1.28% 871,789
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $471,335,245 1.23% 838,839
Mega Capital Research Global Investors $439,029,942 1.15% 781,345
Mega JPMORGAN CHASE & CO $438,207,890 1.15% 779,882
Mega WELLINGTON MANAGEMENT GROUP LLP $413,256,044 1.08% 735,475
Mega GOLDMAN SACHS GROUP INC $402,830,739 1.05% 716,921
Large POLEN CAPITAL MANAGEMENT LLC $390,969,242 1.02% 695,811
Mega FRANKLIN RESOURCES INC $372,326,849 0.97% 662,633
Mega Legal & General Group Plc $365,679,696 0.96% 650,803
Mega PRICE T ROWE ASSOCIATES INC /MD/ $358,521,218 0.94% 638,063
Mega Amundi $343,190,609 0.90% 610,779
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $342,874,830 0.90% 610,217
Mega AMERICAN CENTURY COMPANIES INC $337,095,229 0.88% 599,931
Mega DIMENSIONAL FUND ADVISORS LP $322,149,515 0.84% 573,332
Mega Capital World Investors $279,737,498 0.73% 497,851
Mega BANK OF AMERICA CORP /DE/ Bank $274,211,867 0.72% 488,017
Mid FUNDSMITH INVESTMENT SERVICES LTD. $270,598,357 0.71% 481,586
Mega VANGUARD FIDUCIARY TRUST CO Bank $258,837,999 0.68% 460,656
Mega Nuveen, LLC $250,492,808 0.66% 445,804
Large AustralianSuper Pty Ltd $248,929,631 0.65% 443,022
Mid CAPITAL COUNSEL LLC/NY $236,103,368 0.62% 420,195
Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. $224,405,380 0.59% 399,376
Mega ROYAL BANK OF CANADA Bank $220,094,556 0.58% 391,704
Mega DEUTSCHE BANK AG\ Bank $218,470,132 0.57% 388,813
Large CIBC Bancorp USA Inc. Bank $206,495,697 0.54% 367,502
Large WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC $197,572,323 0.52% 351,621
Mega NEUBERGER BERMAN GROUP LLC $196,496,866 0.51% 349,707
Mid MONTRUSCO BOLTON INVESTMENTS INC. $192,233,806 0.50% 342,120
Large BESSEMER GROUP INC $179,391,805 0.47% 319,265
Mega Clearbridge Investments, LLC $173,330,141 0.45% 308,477
Mega UBS Group AG $171,470,284 0.45% 305,167
Large Pictet Asset Management Holding SA $161,788,920 0.42% 287,937
Mega FMR LLC $159,001,383 0.42% 282,976
Mega RAYMOND JAMES FINANCIAL INC $153,370,681 0.40% 272,955
Mid Williams Jones Wealth Management, LLC. $148,065,319 0.39% 263,513
Large Caisse de depot et placement du Quebec $147,805,726 0.39% 263,051
Mid Railway Pension Investments Ltd Pension $144,113,547 0.38% 256,480
Mega TD Asset Management Inc $132,904,402 0.35% 236,531
Mega FIRST TRUST ADVISORS LP $131,849,174 0.34% 234,653
Mega Swiss National Bank Bank $131,695,778 0.34% 234,380
Large LOS ANGELES CAPITAL MANAGEMENT LLC $127,756,367 0.33% 227,369
Mid COMGEST GLOBAL INVESTORS S.A.S. $123,814,709 0.32% 220,354
Mega WELLS FARGO & COMPANY/MN $117,349,038 0.31% 208,847
Large Allianz Asset Management GmbH $116,537,670 0.30% 207,403
Large Alyeska Investment Group, L.P. $114,217,627 0.30% 203,274
Large Russell Investments Group, Ltd. $113,329,834 0.30% 201,694
Mega Sumitomo Mitsui Trust Group, Inc. $111,181,736 0.29% 197,871
Large Robeco Institutional Asset Management B.V. $106,624,246 0.28% 189,760
Mega Mitsubishi UFJ Asset Management Co., Ltd. $106,208,447 0.28% 189,020
Mega SCHRODER INVESTMENT MANAGEMENT GROUP $105,705,553 0.28% 188,125
Mega BARCLAYS PLC $105,475,179 0.28% 187,715
Mega VICTORY CAPITAL MANAGEMENT INC $102,959,037 0.27% 183,237
Mega ENVESTNET ASSET MANAGEMENT INC $102,880,373 0.27% 183,097
Large CONGRESS ASSET MANAGEMENT CO $100,125,202 0.26% 190,193
Mid Liontrust Investment Partners LLP $99,643,886 0.26% 177,337
Mega Vanguard Global Advisers, LLC $98,253,209 0.26% 174,862
Large Epoch Investment Partners, Inc. $98,107,116 0.26% 174,602
Mega RHUMBLINE ADVISERS $97,617,711 0.26% 173,731
Large KBC Group NV $97,026,602 0.25% 172,679
Large Assenagon Asset Management S.A. $96,461,180 0.25% 183,233
Mid Welch & Forbes LLC $94,499,222 0.25% 168,181
Mega HSBC HOLDINGS PLC $93,414,769 0.24% 166,251
Mid AMERICAN CAPITAL MANAGEMENT INC $93,305,205 0.24% 166,056
Mid TimesSquare Capital Management, LLC $92,016,792 0.24% 163,763
Large FEDERATED HERMES, INC. $88,034,115 0.23% 156,675
Mega California Public Employees Retirement System Pension $87,949,832 0.23% 156,525
Large Holocene Advisors, LP $83,009,133 0.22% 147,732
Large Curated Wealth Partners LLC $80,174,705 0.21% 152,296
Mega VANGUARD ASSET MANAGEMENT, Ltd $78,379,159 0.21% 139,492
Mega BNP PARIBAS ARBITRAGE, SA $77,948,752 0.20% 138,726
Mega AMERIPRISE FINANCIAL INC $75,459,577 0.20% 134,296
Large HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Pension $75,232,013 0.20% 133,891
Large WESTFIELD CAPITAL MANAGEMENT CO LP $74,652,705 0.20% 132,860
Large Point72 Asset Management, L.P. $72,643,386 0.19% 129,284
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $68,918,056 0.18% 122,654
Large ProShare Advisors LLC $68,897,828 0.18% 122,618
Mega National Pension Service Pension $68,786,573 0.18% 122,420
Mid LORING WOLCOTT & COOLIDGE FIDUCIARY ADVISORS LLP/MA $68,721,394 0.18% 122,304
Large Corient Private Wealth LLC $68,553,950 0.18% 122,006
Large Bank Julius Baer & Co. Ltd, Zurich Bank $68,278,063 0.18% 121,515
Large Rathbones Group PLC $68,275,815 0.18% 121,511
Mega CITIGROUP INC $67,585,814 0.18% 120,283
Large TCW GROUP INC $66,724,998 0.17% 118,751
Mega BANK OF MONTREAL /CAN/ Bank $66,412,022 0.17% 118,194
Large Universal- Beteiligungs- und Servicegesellschaft mbH $64,942,684 0.17% 115,579
Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. $63,767,772 0.17% 113,488
Large Life Cycle Investment Partners Ltd $61,514,593 0.16% 109,478
Large BROWN ADVISORY INC $60,711,652 0.16% 108,049
Key facts CIK 874716 CUSIP 45168D104 13F (30d) 118 filings 96 filers Visit website Investor relations

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