IDEXX Laboratories Inc. 13F holders
1,311 funds reported a position in IDEXX Laboratories Inc. in their 13F for the quarter ended 30 June 2026, together 74.5 million shares worth $39.22 billion. Against the quarter before, 79 opened a position, 467 added, 506 trimmed and 107 sold out; together they bought a net 358,575 shares. The largest holders: BlackRock, Inc., Vanguard Capital Management LLC and Vanguard Portfolio Management LLC.
Funds holding1,311-12 on Q1 2026
Shares they held74.5Mworth $39.22 billion
Net bought on the quarter358,575 sharesabout $188.8 million at the funds' values
Funds buying to selling546 to 613opened or added, to cut or sold
Opened 79Added 467Held 247Trimmed 506Sold out 107
What each fund did in IDXX against its 13F for the quarter before; a change under 0.1% of a holding counts as held
Funds reporting a position in IDXX in their 13F, each quarter; hover a bar for the shares they held
Filed so far for the quarter to 30 September 2026
4,696 funds have filed their 13F for the quarter so far; the rest are due by 16 November 2026. Of those, 682 reported a position in IDEXX Laboratories Inc.: 41 opened one, 185 added, 289 trimmed and 58 sold out, a net 1.1 million shares sold.
The largest moves in the name among the funds that have filed, against each fund's previous 13F.
The well-known funds
Of the 44 funds followed here, 1 reported a position in IDEXX Laboratories Inc. in a 13F for the quarter ended 30 September 2026, and 12 more in a 13F for an earlier quarter, the latest each has filed. The largest: Geode Capital Management, 2.6 million shares worth $1.37 billion, 0.1% of its reported book. In the quarter, 1 fund added or opened a position and 0 trimmed or sold out; together they bought a net 57,817 shares, about $30.1 million at the funds' own value per share on 30 September 2026. A change under 0.1% of a holding counts as held.
| Fund | Shares | Value | Of its book | Change on the quarter | Status | Quarter ended | Filing |
|---|---|---|---|---|---|---|---|
| Geode Capital Management | 2,620,703 | $1.37 billion | 0.1% | +57,817 | added | 30 September 2026 | 13F |
| FMR LLC | 822,643 | $433.1 million | 0.0% | +539,667 | added | 30 June 2026, an earlier quarter | 13F |
| Capital Research Global Investors | 789,111 | $415.5 million | 0.1% | +7,766 | added | 30 June 2026, an earlier quarter | 13F |
| Alyeska | 401,082 | $211.1 million | 0.5% | +197,808 | added | 30 June 2026, an earlier quarter | 13F |
| Norges Bank | 353,944 | $186.3 million | 0.0% | held | 30 June 2026, an earlier quarter | 13F | |
| Baillie Gifford | 353,797 | $186.3 million | 0.2% | +353,797 | new | 30 June 2026, an earlier quarter | 13F |
| Point72 Asset Management | 262,905 | $138.4 million | 0.2% | +133,621 | added | 30 June 2026, an earlier quarter | 13F |
| Renaissance Technologies | 109,784 | $57.8 million | 0.1% | +61,280 | added | 30 June 2026, an earlier quarter | 13F |
| Millennium Management | 78,980 | $41.6 million | 0.0% | +8,534 | added | 30 June 2026, an earlier quarter | 13F |
| Citadel Advisors | 38,846 | $20.5 million | 0.0% | -48,720 | trimmed | 30 June 2026, an earlier quarter | 13F |
| Bridgewater Associates | 33,528 | $17.7 million | 0.1% | +23,214 | added | 30 June 2026, an earlier quarter | 13F |
| Two Sigma Investments | 1,020 | $536,969 | 0.0% | +79 | added | 30 June 2026, an earlier quarter | 13F |
| Harris Associates | 455 | $239,530 | 0.0% | -27 | trimmed | 30 June 2026, an earlier quarter | 13F |
Value is what the fund reported.
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Change is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.The largest holders
| Fund | Shares | Share of all | Value | Of its book | Change in shares | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 8,170,178 | 10.97% | $4.30 billion | 0.06% | -195,375 | 13F |
| Vanguard Capital Management LLC | 5,152,213 | 6.92% | $2.71 billion | 0.06% | -30,294 | 13F |
| Vanguard Portfolio Management LLC | 3,896,521 | 5.23% | $2.05 billion | 0.09% | -14,342 | 13F |
| State Street Corp. | 3,748,660 | 5.03% | $1.97 billion | 0.06% | +74,475 | 13F |
| Invesco Ltd. | 3,611,416 | 4.85% | $1.90 billion | 0.15% | +261,739 | 13F |
| Geode Capital Management, LLC | 2,562,886 | 3.44% | $1.35 billion | 0.07% | -98,113 | 13F |
| Bamco Inc. | 1,976,778 | 2.65% | $1.04 billion | 1.56% | +343,411 | 13F |
| Morgan Stanley | 1,356,103 | 1.82% | $713.9 million | 0.04% | +40,149 | 13F |
| Bank of New York Mellon Corp | 1,193,343 | 1.60% | $628.2 million | 0.10% | -311,189 | 13F |
| Arrowstreet Capital, Limited Partnership | 1,067,078 | 1.43% | $561.8 million | 0.25% | +228,239 | 13F |
| Fundsmith LLP | 1,019,887 | 1.37% | $536.9 million | 3.93% | -445,899 | 13F |
| Blair William & Co. | 918,556 | 1.23% | $483.6 million | 1.26% | -27,780 | 13F |
| Northern Trust Corp. | 918,137 | 1.23% | $483.3 million | 0.06% | +6,244 | 13F |
| UBS AM, a distinct business unit of UBS Asset Management Americas LLC | 911,489 | 1.22% | $479.8 million | 0.09% | +39,700 | 13F |
| FMR LLC | 822,643 | 1.10% | $433.1 million | 0.02% | +539,667 | 13F |
| American Century Companies Inc. | 808,358 | 1.09% | $425.6 million | 0.19% | +208,427 | 13F |
| Capital Research Global Investors | 789,111 | 1.06% | $415.5 million | 0.06% | +7,766 | 13F |
| JPMorgan Chase & Co. | 755,791 | 1.01% | $405.1 million | 0.02% | -24,091 | 13F |
| Principal Financial Group Inc. | 743,246 | 1.00% | $391.3 million | 0.19% | -137,943 | 13F |
| Goldman Sachs Group Inc. | 738,708 | 0.99% | $388.9 million | 0.04% | +21,787 | 13F |
| Wellington Management Group LLP | 726,695 | 0.98% | $382.6 million | 0.07% | -8,780 | 13F |
| Charles Schwab Investment Management Inc. | 650,429 | 0.87% | $342.4 million | 0.05% | +40,212 | 13F |
| Legal & General Group Plc | 617,197 | 0.83% | $324.9 million | 0.07% | -33,606 | 13F |
| Dimensional Fund Advisors LP | 608,902 | 0.82% | $320.6 million | 0.06% | +35,570 | 13F |
| Franklin Resources Inc. | 575,784 | 0.77% | $303.1 million | 0.07% | -86,849 | 13F |
| Amundi | 569,725 | 0.77% | $299.9 million | 0.07% | -41,054 | 13F |
| Polen Capital Management LLC | 532,384 | 0.71% | $280.3 million | 2.41% | -163,427 | 13F |
| AustralianSuper Pty Ltd | 518,860 | 0.70% | $273.1 million | 1.18% | +75,838 | 13F |
| Nuveen, LLC | 484,519 | 0.65% | $255.1 million | 0.06% | +38,715 | 13F |
| Bank of America Corp. | 476,998 | 0.64% | $251.1 million | 0.02% | -11,019 | 13F |
| Price T Rowe Associates Inc. | 458,318 | 0.62% | $241.3 million | 0.02% | -179,745 | 13F |
| Vanguard Fiduciary Trust Co. | 451,663 | 0.61% | $237.8 million | 0.05% | -8,993 | 13F |
| Nomura Asset Management International Inc. | 421,519 | 0.57% | $221.9 million | 0.34% | +22,143 | 13F |
| Capital Counsel LLC | 419,151 | 0.56% | $220.7 million | 8.62% | -1,044 | 13F |
| Alyeska Investment Group, L.P. | 401,082 | 0.54% | $211.1 million | 0.54% | +197,808 | 13F |
| Clearbridge Investments, LLC | 379,502 | 0.51% | $199.8 million | 0.17% | +71,025 | 13F |
| Deutsche Bank AG | 377,951 | 0.51% | $199.0 million | 0.06% | -10,862 | 13F |
| Montrusco Bolton Investments Inc. | 372,788 | 0.50% | $196.3 million | 3.04% | +30,668 | 13F |
| Assenagon Asset Management S.A. | 366,466 | 0.49% | $192.9 million | 0.12% | 13F | |
| UBS Group AG | 364,663 | 0.49% | $192.0 million | 0.03% | +59,496 | 13F |
| Norges Bank | 353,944 | 0.48% | $186.3 million | 0.02% | 13F | |
| Baillie Gifford & Co. | 353,797 | 0.48% | $186.3 million | 0.17% | new | 13F |
| Neuberger Berman Group LLC | 353,322 | 0.47% | $186.0 million | 0.12% | +3,615 | 13F |
| CIBC Bancorp USA Inc. | 346,891 | 0.47% | $183.0 million | 0.23% | -20,611 | 13F |
| Massachusetts Financial Services Co. | 336,986 | 0.45% | $179.7 million | 0.06% | new | 13F |
| Fundsmith Investment Services Ltd | 327,058 | 0.44% | $172.2 million | 3.81% | -154,528 | 13F |
| Squarepoint Ops LLC | 315,164 | 0.42% | $165.9 million | 0.33% | +214,855 | 13F |
| William Blair Investment Management, LLC | 298,154 | 0.40% | $157.0 million | 0.47% | -53,467 | 13F |
| Bessemer Group Inc. | 288,814 | 0.39% | $152.0 million | 0.21% | -30,451 | 13F |
| Royal Bank of Canada | 274,340 | 0.37% | $144.4 million | 0.02% | -117,364 | 13F |
The 50 largest of the 1,311 funds that reported a position in IDXX in their 13F for the quarter ended 30 June 2026, by the value each reported.
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Share of all is the fund's part of all the shares the funds reported. Change is shares against the fund's 13F for the quarter before. A 13F lists a manager's long positions in US-listed shares at the quarter's end. What is a 13F?Options the funds reported on IDXX
| Fund | Option | Shares under the options | Value of those shares | Quarter ended | Filing |
|---|---|---|---|---|---|
| Millennium Management | Calls | 18,100 | $9.5 million | 30 June 2026 | 13F |
| Citadel Advisors | Calls | 16,300 | $8.6 million | 30 June 2026 | 13F |
| Citadel Advisors | Puts | 12,100 | $6.4 million | 30 June 2026 | 13F |
| Point72 Asset Management | Calls | 1,100 | $579,084 | 30 June 2026 | 13F |
A 13F lists calls and puts by the shares they cover and what those shares were worth at the quarter's end, not what the options cost.
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They are not counted in the holdings above. A put gains when the stock falls, a call when it rises, and a fund may hold either to hedge.Schedule 13D and 13G filed on the name, last twelve months
| Filed | Schedule | Who | Holding | Of the class | Event date | Rule or purpose | Filing |
|---|---|---|---|---|---|---|---|
| 30 October 2026 | 13G | Vanguard Portfolio Management and 1 other | 4.0 million | 5.0% | 30 September 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 30 April 2026 | 13G | Vanguard Capital Management and 1 other | 6.0 million | 7.5% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 27 March 2026 | 13G/A | The Vanguard Group and 1 other | 0 | 0.0% | 13 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder.
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Amendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short. 13D and 13GFails to deliver
| Settlement date | Shares failed | Price | File |
|---|---|---|---|
| 28 August 2026 | 47 | $545.08 | SEC |
| 20 August 2026 | 3 | $562.20 | SEC |
| 7 August 2026 | 168 | $590.00 | SEC |
| 3 August 2026 | 381 | $559.07 | SEC |
| 28 July 2026 | 14,233 | $556.20 | SEC |
Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period.