PARNASSUS INVESTMENTS, LLC
Position in IDXX — Idexx Laboratories Inc /De
CIK 948669
San Francisco, CA
Position in IDXX
as of Jun 30, 2026
· filed Jul 29, 2026
Position Value
$15,469,965
-$2,908,895 QoQ
Shares Held
29,386
-10.2% QoQ
Ownership
0.037%
of shares outstanding
% of Portfolio
0.04%
of 13F equity value
Holder Rank
#230
of 1,286 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in IDXX Over Time
Shares Held
Position Value (USD)
Position in Diagnostics & Research
Healthcare · as of Jun 30, 2026PARNASSUS INVESTMENTS, LLC holds $1,651,401,789 across 6 Diagnostics & Research names. IDXX ranks #5 (0.9% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | TMO |
Thermo Fisher Scientific Inc.
|
1,639,589 | $822,024,341 | |
| 2 | DHR |
Danaher Corp /De/
|
3,674,207 | $699,862,949 | |
| 3 | A |
Agilent Technologies, Inc.
|
607,098 | $80,640,827 | |
| 4 | NTRA |
Natera, Inc.
|
77,576 | $21,058,005 | |
| 5 | IDXX |
Idexx Laboratories Inc /De
This page
|
29,386 | $15,469,965 | |
| 6 | TWST |
Twist Bioscience Corp
|
120,001 | $12,345,702 |
All Filings in IDXX
Export CSV
26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $15,469,965 | 29,386 | Shares | Sole | 2026-07-29 | |
| 2026-03-31 | $18,378,860 | 32,709 | Shares | Sole | 2026-05-12 | |
| 2025-12-31 | $22,765,911 | 33,651 | Shares | Sole | 2026-02-12 | |
| 2025-09-30 | $21,004,786 | 32,877 | Shares | Sole | 2025-10-24 | |
| 2025-06-30 | $17,826,332 | 33,237 | Shares | Sole | 2025-08-06 | |
| 2025-03-31 | $15,392,427 | 36,653 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $19,988,583 | 48,347 | Shares | Sole | 2025-02-10 | |
| 2024-09-30 | $24,747,191 | 48,983 | Shares | Sole | 2024-11-08 | |
| 2024-06-30 | $23,864,517 | 48,983 | Shares | Sole | 2024-08-06 | |
| 2024-03-31 | $26,447,391 | 48,983 | Shares | Sole | 2024-05-09 | |
| 2023-12-31 | $27,188,014 | 48,983 | Shares | Sole | 2024-02-12 | |
| 2023-09-30 | $21,418,796 | 48,983 | Shares | Sole | 2023-11-08 | |
| 2023-06-30 | $24,600,732 | 48,983 | Shares | Sole | 2023-07-31 | |
| 2023-03-31 | $24,495,418 | 48,983 | Shares | Sole | 2023-05-01 | |
| 2022-12-31 | $25,454,664 | 62,395 | Shares | Sole | 2023-01-30 | |
| 2022-09-30 | $20,328,291 | 62,395 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $21,883,798 | 62,395 | Shares | Sole | 2022-08-05 | |
| 2022-03-31 | $34,133,808 | 62,395 | Shares | Sole | 2022-05-11 | |
| 2021-12-31 | $41,084,611 | 62,395 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 | $38,803,450 | 62,395 | Shares | Sole | 2021-11-16 | |
| 2021-06-30 | $45,009,305 | 71,268 | Shares | Sole | 2021-08-05 | |
| 2021-03-31 | $34,872,145 | 71,268 | Shares | Sole | 2021-05-06 | |
| 2020-12-31 | $35,624,735 | 71,268 | Shares | Sole | 2021-02-10 | |
| 2020-09-30 | $28,016,163 | 71,268 | Shares | Sole | 2020-11-13 | |
| 2020-06-30 | $24,068,994 | 72,901 | Shares | Sole | 2020-08-12 | |
| 2020-03-31 | $17,659,538 | 72,901 | Shares | Sole | 2020-05-01 | |
| No filing history on record for this holder in this stock. | ||||||