IDEXX LABORATORIES INC /DE (IDXX) — Institutional Holders, Q2 2026
1,309 institutional investment managers reported a IDXX position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $39.2B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
IDXX in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- Invesco Ltd.Added · +1,932,860 sh+$1.0B
- FMRAdded · +539,667 sh+$284.1M
- BAILLIE GIFFORDNew · +353,797 sh+$186.3M
- BAMCOAdded · +343,411 sh+$180.8M
- MASSACHUSETTS FINANCIAL SERVICESNew · +336,986 sh+$177.4M
Biggest sellers
- Capital World InvestorsSold out · -497,851 sh-$262.1M
- Fundsmith LLPTrimmed · -445,899 sh-$234.7M
- Bank of New York MellonTrimmed · -311,189 sh-$163.8M
- Railway Pension Investments LtdTrimmed · -211,120 sh-$111.1M
- LOS ANGELES CAPITAL MANAGEMENTTrimmed · -209,767 sh-$110.4M
IDXX 13F holders ranked 1–100 of 1,309
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | BlackRock#1 · 8,170,178 sh | 8,170,178 | $4.3B | 0.06% | -2.3% |
| 2 | VANGUARD CAPITAL MANAGEMENT#2 · 5,152,213 sh | 5,152,213 | $2.7B | 0.06% | -0.6% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT#3 · 3,896,521 sh | 3,896,521 | $2.1B | 0.09% | -0.4% |
| 4 | STATE STREET#4 · 3,748,660 sh | 3,748,660 | $2.0B | 0.06% | +2.0% |
| 5 | Invesco Ltd.#5 · 3,611,416 sh | 3,611,416 | $1.9B | 0.15% | +115.2% |
| 6 | GEODE CAPITAL MANAGEMENT#6 · 2,562,886 sh | 2,562,886 | $1.3B | 0.07% | -3.7% |
| 7 | BAMCO#7 · 1,976,778 sh | 1,976,778 | $1.0B | 1.56% | +21.0% |
| 8 | MORGAN STANLEY#8 · 1,356,103 sh | 1,356,103 | $713.9M | 0.04% | +3.1% |
| 9 | Bank of New York Mellon#9 · 1,193,343 sh | 1,193,343 | $628.2M | 0.10% | -20.7% |
| 10 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP#10 · 1,067,078 sh | 1,067,078 | $561.8M | 0.25% | +27.2% |
| 11 | Fundsmith LLP#11 · 1,019,887 sh | 1,019,887 | $536.9M | 3.93% | -30.4% |
| 12 | BLAIR WILLIAM#12 · 918,556 sh | 918,556 | $483.6M | 1.26% | -2.9% |
| 13 | NORTHERN#13 · 918,137 sh | 918,137 | $483.3M | 0.06% | +0.7% |
| 14 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#14 · 911,489 sh | 911,489 | $479.8M | 0.09% | +4.6% |
| 15 | FMR#15 · 822,643 sh | 822,643 | $433.1M | 0.02% | +190.7% |
| 16 | AMERICAN CENTURY COMPANIES#16 · 808,358 sh | 808,358 | $425.6M | 0.19% | +34.7% |
| 17 | Capital Research Global Investors#17 · 789,111 sh | 789,111 | $415.5M | 0.06% | +1.0% |
| 18 | JPMORGAN CHASE#18 · 755,791 sh | 755,791 | $405.1M | 0.02% | -3.1% |
| 19 | PRINCIPAL FINANCIAL GROUP#19 · 743,246 sh | 743,246 | $391.3M | 0.19% | -15.7% |
| 20 | GOLDMAN SACHS GROUP#20 · 738,708 sh | 738,708 | $388.9M | 0.03% | +3.0% |
| 21 | WELLINGTON MANAGEMENT GROUP LLP#21 · 726,695 sh | 726,695 | $382.6M | 0.07% | -1.2% |
| 22 | CHARLES SCHWAB INVESTMENT MANAGEMENT#22 · 650,429 sh | 650,429 | $342.4M | 0.05% | +6.6% |
| 23 | Legal & General Group Plc#23 · 617,197 sh | 617,197 | $324.9M | 0.07% | -5.2% |
| 24 | DIMENSIONAL FUND ADVISORS#24 · 608,902 sh | 608,902 | $320.6M | 0.06% | +6.2% |
| 25 | FRANKLIN RESOURCES#25 · 575,784 sh | 575,784 | $303.1M | 0.07% | -13.1% |
| 26 | Amundi#26 · 569,725 sh | 569,725 | $299.9M | 0.07% | -6.7% |
| 27 | POLEN CAPITAL MANAGEMENT#27 · 532,384 sh | 532,384 | $280.3M | 2.41% | -23.5% |
| 28 | AustralianSuper Pty Ltd#28 · 518,860 sh | 518,860 | $273.1M | 1.18% | +17.1% |
| 29 | Nuveen#29 · 484,519 sh | 484,519 | $255.1M | 0.06% | +8.7% |
| 30 | BANK OF AMERICA#30 · 476,998 sh | 476,998 | $251.1M | 0.02% | -2.3% |
| 31 | PRICE T ROWE ASSOCIATES#31 · 458,318 sh | 458,318 | $241.3M | 0.02% | -28.2% |
| 32 | VANGUARD FIDUCIARY#32 · 451,663 sh | 451,663 | $237.8M | 0.05% | -2.0% |
| 33 | NOMURA ASSET MANAGEMENT INTERNATIONAL#33 · 421,519 sh | 421,519 | $221.9M | 0.33% | +5.5% |
| 34 | CAPITAL COUNSEL#34 · 419,151 sh | 419,151 | $220.7M | 8.62% | -0.2% |
| 35 | Alyeska Investment Group, L.P.#35 · 401,082 sh | 401,082 | $211.1M | 0.54% | +97.3% |
| 36 | Clearbridge Investments#36 · 379,502 sh | 379,502 | $199.8M | 0.17% | +23.0% |
| 37 | DEUTSCHE BANK AG\#37 · 377,951 sh | 377,951 | $199.0M | 0.06% | -2.8% |
| 38 | MONTRUSCO BOLTON INVESTMENTS#38 · 372,788 sh | 372,788 | $196.3M | — | +9.0% |
| 39 | UBS Group AG#39 · 364,663 sh | 364,663 | $192.0M | 0.02% | +19.5% |
| 40 | NORGES BANK#40 · 353,944 sh | 353,944 | $186.3M | 0.02% | — |
| 41 | BAILLIE GIFFORD#41 · 353,797 sh | 353,797 | $186.3M | 0.17% | New |
| 42 | Neuberger Berman Group#42 · 353,322 sh | 353,322 | $186.0M | 0.12% | +1.0% |
| 43 | CIBC Bancorp USA#43 · 346,891 sh | 346,891 | $183.0M | 0.22% | -5.6% |
| 44 | MASSACHUSETTS FINANCIAL SERVICES#44 · 336,986 sh | 336,986 | $179.7M | 0.06% | New |
| 45 | FUNDSMITH INVESTMENT SERVICES LTD.#45 · 327,058 sh | 327,058 | $172.2M | 3.81% | -32.1% |
| 46 | Squarepoint Ops#46 · 315,164 sh | 315,164 | $165.9M | 0.18% | +214.2% |
| 47 | WILLIAM BLAIR INVESTMENT MANAGEMENT#47 · 298,154 sh | 298,154 | $157.0M | 0.47% | -15.2% |
| 48 | BESSEMER GROUP#48 · 288,814 sh | 288,814 | $152.0M | 0.21% | -9.5% |
| 49 | ROYAL BANK OF CANADA#49 · 274,340 sh | 274,340 | $144.4M | 0.02% | -30.0% |
| 50 | Point72 Asset Management, L.P.#50 · 262,905 sh | 262,905 | $138.4M | 0.15% | +103.4% |
| 51 | RAYMOND JAMES FINANCIAL#51 · 262,791 sh | 262,791 | $138.3M | 0.04% | -3.7% |
| 52 | COMGEST GLOBAL INVESTORS S.A.S.#52 · 262,562 sh | 262,562 | $138.2M | 3.04% | +19.2% |
| 53 | Williams Jones Wealth Management#53 · 261,303 sh | 261,303 | $137.6M | 1.55% | -0.8% |
| 54 | Pictet Asset Management Holding SA#54 · 242,507 sh | 242,507 | $127.7M | 0.12% | -15.8% |
| 55 | Russell Investments Group, Ltd.#55 · 230,683 sh | 230,683 | $121.8M | 0.11% | +14.4% |
| 56 | Swiss National Bank#56 · 224,020 sh | 224,020 | $117.9M | 0.06% | -4.4% |
| 57 | Allianz Asset Management GmbH#57 · 208,153 sh | 208,153 | $116.9M | 0.10% | +0.4% |
| 58 | Liontrust Investment Partners LLP#58 · 215,198 sh | 215,198 | $113.3M | 1.66% | +42.7% |
| 59 | TD ASSET MANAGEMENT#59 · 211,467 sh | 211,467 | $111.3M | 0.10% | -10.6% |
| 60 | WELLS FARGO & COMPANY#60 · 209,092 sh | 209,092 | $110.1M | 0.02% | +0.1% |
| 61 | FIRST ADVISORS#61 · 202,754 sh | 202,754 | $106.7M | 0.06% | -13.6% |
| 62 | SCHRODER INVESTMENT MANAGEMENT GROUP#62 · 198,974 sh | 198,974 | $106.6M | 0.08% | +5.8% |
| 63 | Mitsubishi UFJ Asset Management , Ltd.#63 · 199,070 sh | 199,070 | $104.8M | 0.06% | +5.3% |
| 64 | Sumitomo Mitsui#64 · 196,296 sh | 196,296 | $103.3M | 0.06% | -0.8% |
| 65 | Vontobel Holding Ltd.#65 · 191,908 sh | 191,908 | $101.0M | — | +3580.6% |
| 66 | CONGRESS ASSET MANAGEMENT#66 · 190,193 sh | 190,193 | $100.1M | — | +14.1% |
| 67 | VICTORY CAPITAL MANAGEMENT#67 · 188,796 sh | 188,796 | $99.4M | 0.06% | +3.0% |
| 68 | HSBC PLC#68 · 186,032 sh | 186,032 | $97.8M | 0.04% | +11.9% |
| 69 | VIRGINIA RETIREMENT SYSTEMS ET Al#69 · 184,436 sh | 184,436 | $97.1M | 0.36% | +156.9% |
| 70 | Assenagon Asset Management S.A.#70 · 183,233 sh | 183,233 | $96.5M | — | +113.5% |
| 71 | CAISSE DE DEPOT ET PLACEMENT DU QUEBEC#71 · 178,532 sh | 178,532 | $94.0M | 0.13% | -32.1% |
| 72 | Holocene Advisors#72 · 175,568 sh | 175,568 | $92.4M | 0.21% | +18.8% |
| 73 | Robeco Institutional Asset Management B.V.#73 · 172,393 sh | 172,393 | $90.8M | — | -9.2% |
| 74 | Vanguard Global Advisers#74 · 170,040 sh | 170,040 | $89.5M | 0.04% | -2.8% |
| 75 | RHUMBLINE ADVISERS#75 · 169,208 sh | 169,208 | $89.1M | 0.07% | -2.6% |
| 76 | Epoch Investment Partners#76 · 168,822 sh | 168,822 | $88.9M | 0.51% | -3.3% |
| 77 | WELCH & FORBES#77 · 167,666 sh | 167,666 | $88.3M | 1.07% | -0.3% |
| 78 | CITIGROUP#78 · 165,689 sh | 165,689 | $87.2M | 0.03% | +37.7% |
| 79 | Quantinno Capital Management#79 · 164,289 sh | 164,289 | $86.5M | 0.10% | +64.6% |
| 80 | TimesSquare Capital Management#80 · 163,457 sh | 163,457 | $86.1M | 1.27% | -0.2% |
| 81 | AMERICAN CAPITAL MANAGEMENT#81 · 162,110 sh | 162,110 | $85.3M | 3.83% | -2.4% |
| 82 | CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM#82 · 158,871 sh | 158,871 | $83.6M | 0.05% | +1.5% |
| 83 | VANGUARD ASSET MANAGEMENT, Ltd#83 · 155,306 sh | 155,306 | $81.8M | 0.06% | +11.3% |
| 84 | FEDERATED HERMES#84 · 155,264 sh | 155,264 | $81.7M | 0.12% | -0.9% |
| 85 | ENVESTNET ASSET MANAGEMENT#85 · 153,244 sh | 153,244 | $80.7M | 0.02% | -16.3% |
| 86 | BARCLAYS PLC#86 · 148,839 sh | 148,839 | $78.4M | 0.01% | -20.7% |
| 87 | Qube Research & Technologies Ltd#87 · 148,395 sh | 148,395 | $78.1M | 0.07% | +73.3% |
| 88 | BNP PARIBAS FINANCIAL MARKETS#88 · 141,180 sh | 141,180 | $74.3M | 0.03% | +1.8% |
| 89 | WESTFIELD CAPITAL MANAGEMENT#89 · 139,925 sh | 139,925 | $73.7M | 0.24% | +5.3% |
| 90 | Life Cycle Investment Partners Ltd#90 · 134,346 sh | 134,346 | $70.7M | 0.33% | +22.7% |
| 91 | Rathbones Group PLC#91 · 133,541 sh | 133,541 | $70.3M | 0.26% | +9.9% |
| 92 | BNP Paribas Asset Management Holding S.A.#92 · 132,512 sh | 132,512 | $69.8M | 0.07% | +16.8% |
| 93 | National Pension Service#93 · 129,305 sh | 129,305 | $68.1M | 0.04% | +5.6% |
| 94 | BANK OF MONTREAL#94 · 124,073 sh | 124,073 | $65.3M | 0.02% | +5.0% |
| 95 | Trexquant Investment#95 · 123,380 sh | 123,380 | $65.0M | 0.38% | New |
| 96 | Bank Julius Baer & Ltd, Zurich#96 · 122,801 sh | 122,801 | $64.9M | 0.17% | +1.1% |
| 97 | CANADA PENSION PLAN INVESTMENT BOARD#97 · 120,895 sh | 120,895 | $63.6M | 0.04% | +48.5% |
| 98 | LORING WOLCOTT & COOLIDGE FIDUCIARY ADVISORS LLP#98 · 117,195 sh | 117,195 | $61.7M | — | -4.2% |
| 99 | KBC Group NV#99 · 113,614 sh | 113,614 | $59.8M | — | -34.2% |
| 100 | Corient Private Wealth#100 · 111,488 sh | 111,488 | $58.7M | 0.08% | -8.6% |
Funds that sold out of IDXX in Q2 2026 (106)
Held IDXX at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
And 6 smaller positions.
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.