IDEXX Laboratories, Inc.
IDXXLast close · Oct 16, 2026560.36+13.18 (+2.41%)
Market cap$44.1B
Of the 85 managers this site tracks, 7 held Idexx Laboratories (IDXX) at the end of Q2 2026, their latest 13Fs. The largest position by value was Terry Smith's, $536.9M; Polen Capital's ($280.3M) and Jensen's ($55.6M) follow. No Schedule 13D or 13G is on file for IDXX from the activists and large holders the site follows.
Superinvestors holding IDXX
| Manager | Firm | Quarter | Shares | Value |
|---|---|---|---|---|
| Terry Smith | Fundsmith LLP | Q2 2026 | 1M | $536.9M |
| Polen Capital | Polen Capital Management LLC | Q2 2026 | 532,384 | $280.3M |
| Jensen | Jensen Investment Management Inc | Q2 2026 | 105,709 | $55.6M |
| Wallace Weitz | Weitz Investment Management, Inc. | Q2 2026 | 35,300 | $18.6M |
| Bridgewater | Bridgewater Associates, LP | Q2 2026 | 33,528 | $17.7M |
| Mairs & Power | Mairs & Power Inc | Q2 2026 | 2,080 | $1.1M |
| Bill Nygren | Harris Associates L P | Q2 2026 | 455 | $239,530 |
13D/13G are SEC beneficial-ownership disclosures, triggered only above 5%; a 13F is a quarterly snapshot filed up to 45 days after quarter end. Superinvestor names link to their full portfolios under Investors.