Idexx Laboratories: which funds bought and sold
Institutions that bought and sold Idexx Laboratories shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.
Between March 31, 2026 and June 30, 2026, 574 institutions that filed 13F reports for both quarters added to or opened positions in Idexx Laboratories, and 601 cut or closed them. Together they added a net 723K shares, +1.0% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 1.2M shares (+8.8%); index fund managers were net sellers of 250K shares (−1.0%). 98 opened a new position and 106 sold out entirely.
Bought, Q2 2026 574 institutions, 98 of them new holders Sold, Q2 2026 601 institutions, 106 of them sold out
Net change, all compared +723K shares (+1.0%)
Net change, active managers +1.2M shares (+8.8%), 46 bought, 45 sold
Buyers versus sellers
574 bought 199 601 sold
Active managers and hedge funds 46 bought · 45 sold · +1.2M
Index fund managers 5 bought · 7 sold · −250K
Other institutions 523 bought · 549 sold · −241K
Biggest buyers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| FMR LLC Active manager | +540K +190.7% | 823K | $433M |
| Baillie Gifford & Co Active manager | +354K New position | 354K | $186M |
| BAMCO Inc Active manager | +343K +21.0% | 2.0M | $1B |
| Massachusetts Financial Services Co Active manager | +337K New position | 337K | $180M |
| Assenagon Asset Management S.A. | +281K +326.9% | 366K | $193M |
| Invesco Ltd. | +262K +7.8% | 3.6M | $1.9B |
| Arrowstreet Capital, Limited Partnership Hedge fund | +228K +27.2% | 1.1M | $562M |
| Squarepoint Ops LLC Hedge fund | +215K +214.2% | 315K | $166M |
| American Century Companies Inc Active manager | +208K +34.7% | 808K | $426M |
| Alyeska Investment Group, L.P. Hedge fund | +198K +97.3% | 401K | $211M |
| Vontobel Holding Ltd. | +187K +3580.6% | 192K | $101M |
| Point72 Asset Management, L.P. Hedge fund | +134K +103.4% | 263K | $138M |
| Trexquant Investment LP Hedge fund | +123K New position | 123K | $65M |
| Jensen Investment Management Inc | +102K +2861.0% | 106K | $55.6M |
| Jane Street Group, LLC | +90K +600.8% | 105K | $55.3M |
| SG Americas Securities, LLC | +77K +726.3% | 88K | $46.2M |
| Australiansuper Pty Ltd | +76K +17.1% | 519K | $273M |
| State Street Corp Index funds | +74K +2.0% | 3.7M | $2B |
| Clearbridge Investments, LLC Active manager | +71K +23.0% | 380K | $200M |
| Quantinno Capital Management LP | +64K +64.6% | 164K | $86.5M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| FMR LLC Active manager | +540K +190.7% | 823K | $433M |
| Baillie Gifford & Co Active manager | +354K New position | 354K | $186M |
| BAMCO Inc Active manager | +343K +21.0% | 2.0M | $1B |
| Massachusetts Financial Services Co Active manager | +337K New position | 337K | $180M |
| Arrowstreet Capital, Limited Partnership Hedge fund | +228K +27.2% | 1.1M | $562M |
| Squarepoint Ops LLC Hedge fund | +215K +214.2% | 315K | $166M |
| American Century Companies Inc Active manager | +208K +34.7% | 808K | $426M |
| Alyeska Investment Group, L.P. Hedge fund | +198K +97.3% | 401K | $211M |
| Point72 Asset Management, L.P. Hedge fund | +134K +103.4% | 263K | $138M |
| Trexquant Investment LP Hedge fund | +123K New position | 123K | $65M |
Biggest sellers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Capital World Investors Active manager | −498K Sold out | 0 | — |
| Fundsmith LLP Active manager | −446K −30.4% | 1.0M | $537M |
| Bank Of New York Mellon Corp | −311K −20.7% | 1.2M | $628M |
| Railway Pension Investments Ltd | −211K −82.3% | 45K | $23.9M |
| Los Angeles Capital Management LLC Active manager | −210K −92.3% | 18K | $9.3M |
| Blackrock, Inc. Index funds | −195K −2.3% | 8.2M | $4.3B |
| Price T Rowe Associates Inc Active manager | −180K −28.2% | 458K | $241M |
| Polen Capital Management LLC Active manager | −163K −23.5% | 532K | $280M |
| Fundsmith Investment Services Ltd. | −155K −32.1% | 327K | $172M |
| Principal Financial Group Inc | −138K −15.7% | 743K | $391M |
| Royal Bank Of Canada | −117K −30.0% | 274K | $144M |
| Rathbones Group PLC | −109K −45.0% | 134K | $70.3M |
| Geode Capital Management, LLC Index funds | −98K −3.7% | 2.6M | $1.3B |
| Franklin Resources Inc Active manager | −87K −13.1% | 576K | $303M |
| Caisse De Depot Et Placement Du Quebec | −85K −32.1% | 179K | $94M |
| Lord, Abbett & Co. LLC | −80K −90.5% | 8,363 | $4.4M |
| Ameriprise Financial Inc | −72K −53.2% | 63K | $33.1M |
| Worldquant Millennium Advisors LLC Hedge fund | −61K −62.3% | 37K | $19.5M |
| KBC Group NV | −59K −34.2% | 114K | $59.8M |
| William Blair Investment Management, LLC Active manager | −53K −15.2% | 298K | $157M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Capital World Investors Active manager | −498K Sold out | 0 | — |
| Fundsmith LLP Active manager | −446K −30.4% | 1.0M | $537M |
| Los Angeles Capital Management LLC Active manager | −210K −92.3% | 18K | $9.3M |
| Price T Rowe Associates Inc Active manager | −180K −28.2% | 458K | $241M |
| Polen Capital Management LLC Active manager | −163K −23.5% | 532K | $280M |
| Franklin Resources Inc Active manager | −87K −13.1% | 576K | $303M |
| Worldquant Millennium Advisors LLC Hedge fund | −61K −62.3% | 37K | $19.5M |
| William Blair Investment Management, LLC Active manager | −53K −15.2% | 298K | $157M |
| Citadel Advisors LLC Hedge fund | −49K −55.6% | 39K | $20.5M |
| Acadian Asset Management LLC Active manager | −33K −98.4% | 549 | $288,000 |
New positions
| Institution | Shares | Value June 30, 2026 |
|---|---|---|
| Baillie Gifford & CoActive manager | 354K | $186M |
| Massachusetts Financial Services CoActive manager | 337K | $180M |
| Trexquant Investment LPHedge fund | 123K | $65M |
| HRT Financial LP | 38K | $19.8M |
| Sone Capital Management, LLC | 19K | $10M |
| Exoduspoint Capital Management, LPHedge fund | 13K | $6.8M |
| Brevan Howard Capital Management LPHedge fund | 11K | $5.6M |
| Quantbot Technologies LPHedge fund | 9,631 | $5.1M |
| Decatur Capital Management, Inc. | 9,337 | $4.9M |
| Crown Oak Advisors, LLC | 7,892 | $4.2M |
Sold out
| Institution | Shares | Value March 31, 2026 |
|---|---|---|
| Capital World InvestorsActive manager | 498K | $280M |
| Westwind Capital | 30K | $16.7M |
| Select Equity Group, L.P.Active manager | 17K | $9.6M |
| Edgestream Partners, L.P.Hedge fund | 16K | $9.3M |
| Parkman Healthcare Partners LLC | 15K | $8.4M |
| Capital International, Inc.Active manager | 14K | $7.6M |
| Capitolis Liquid Global Markets LLC | 13K | $7.4M |
| Integrated Advisors Network LLC | 9,792 | $5.5M |
| Tudor Investment Corp Et AlHedge fund | 8,342 | $4.7M |
| Insight Wealth Strategies, LLC | 6,781 | $3.8M |
Who holds the shares
- Institutions reporting
- 1,285
- Ten largest holders
- 44.3% of 13F-reported shares
- Index fund managers
- 35.0% of 13F-reported shares
- Active managers and hedge funds
- 20.3% of 13F-reported shares
| Type | Bought | Sold | New | Sold out | Net change in shares | Net % |
|---|---|---|---|---|---|---|
| Active managers and hedge funds | 46 | 45 | 10 | 13 | +1.2M | +8.8% |
| Index fund managers | 5 | 7 | 0 | 0 | −250K | −1.0% |
| Other institutions | 523 | 549 | 88 | 93 | −241K | −0.7% |