# IDEXX LABS INC (IDXX) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: 45168D104
Page URL: https://superinvestorclub.com/stock/IDXX
Last updated: 2026-08-29T13:47:02.572Z

## Summary

As of the most recent 13F filing period, IDEXX LABS INC (IDXX) is held by 9 tracked superinvestors with an aggregate position value of $911.6M representing 01019887532384105709353003352820801923455382 shares.

## Top institutional holders (9)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Terry Smith](https://superinvestorclub.com/manager/23) | Fundsmith | 1019887 | $536.9M | 3.93% | 2026-06-30 |
| 2 | [Polen Capital](https://superinvestorclub.com/manager/271) | Polen Capital Management | 532384 | $280.3M | 2.41% | 2026-06-30 |
| 3 | [Jensen Investment Management](https://superinvestorclub.com/manager/93) | Jensen Investment Management | 105709 | $55.6M | 1.35% | 2026-06-30 |
| 4 | [Wallace Weitz](https://superinvestorclub.com/manager/82) | Weitz Investment Management | 35300 | $18.6M | 1.29% | 2026-06-30 |
| 5 | [Ray Dalio](https://superinvestorclub.com/manager/6) | Bridgewater Associates | 33528 | $17.7M | 0.07% | 2026-06-30 |
| 6 | [Mairs & Power](https://superinvestorclub.com/manager/92) | Mairs & Power | 2080 | $1.1M | 0.01% | 2026-06-30 |
| 7 | [Wally Obermeyer](https://superinvestorclub.com/manager/3283) | Obermeyer Wealth Partners | 1923 | $1.0M | 0.04% | 2026-06-30 |
| 8 | [Bill Nygren](https://superinvestorclub.com/manager/73) | Harris Associates | 455 | $239,530 | 0.00% | 2026-06-30 |
| 9 | [FPA Queens Road](https://superinvestorclub.com/manager/97) | Bragg Financial Advisors | 382 | $201,101 | 0.01% | 2026-06-30 |

## Ownership history (quarter-over-quarter)

- 2023-06-30: 1 holders, $2.2M aggregate, 04478 shares
- 2023-09-30: 1 holders, $1.9M aggregate, 04373 shares
- 2023-12-31: 2 holders, $3.2M aggregate, 043731481 shares
- 2024-03-31: 3 holders, $1.49B aggregate, 02714762345253740 shares
- 2024-06-30: 3 holders, $1.31B aggregate, 02663192324263421 shares
- 2024-09-30: 4 holders, $1.36B aggregate, 026641621274933352502 shares
- 2024-12-31: 5 holders, $1.11B aggregate, 02662855886125932402618 shares
- 2025-03-31: 7 holders, $1.30B aggregate, 02648331364757603008190343423862306 shares
- 2025-06-30: 8 holders, $2.10B aggregate, 0263928911954256030010410262522772224468 shares
- 2025-09-30: 9 holders, $2.44B aggregate, 026104571127147568007404443022552144455382 shares
- 2025-12-31: 9 holders, $1.95B aggregate, 01876035960537353006158357121312103455382 shares
- 2026-03-31: 9 holders, $1.24B aggregate, 014657866958113530010314357020802000482384 shares

## Recent congressional trades (26)

- 2026-01-13: April McClain Delaney (Democrat-MD) sale $1,001 - $15,000
- 2026-01-13: April McClain Delaney (Democrat-MD) sale $1,001 - $15,000
- 2025-12-02: April McClain Delaney (Democrat-MD) sale $1,001 - $15,000
- 2025-10-29: April McClain Delaney (Democrat-MD) sale $1,001 - $15,000
- 2025-10-16: April McClain Delaney (Democrat-MD) sale $1,001 - $15,000
- 2025-10-07: Ro Khanna (Democrat-CA) purchase $1,001 - $15,000
- 2025-09-04: Byron Donalds (Republican-FL) purchase $1,001 - $15,000
- 2025-08-07: April McClain Delaney (Democrat-MD) sale $1,001 - $15,000
- 2025-08-04: Ro Khanna (Democrat-CA) purchase $1,001 - $15,000
- 2025-08-01: April McClain Delaney (Democrat-MD) sale $1,001 - $15,000
- 2025-07-09: April McClain Delaney (Democrat-MD) sale $1,001 - $15,000
- 2025-05-15: Rob Bresnahan (Republican-PA) purchase $1,001 - $15,000
- 2025-05-12: Jefferson Shreve (Republican-IN) sale $100,001 - $250,000
- 2025-04-23: Ro Khanna (Democrat-CA) sale $1,001 - $15,000
- 2025-04-09: April McClain Delaney (Democrat-MD) purchase $1,001 - $15,000

## Recent insider transactions (0)


## Citation

When citing, use: "IDEXX LABS INC (IDXX) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/IDXX), aggregating SEC 13F, Form 4, and congressional disclosures."