CHARLES SCHWAB INVESTMENT MANAGEMENT INC
Position in IDXX — Idexx Laboratories Inc /De
CIK 884546
SAN FRANCISCO, CA
Position in IDXX
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$342,874,830
-$56,319,814 QoQ
Shares Held
610,217
+3.4% QoQ
Ownership
0.774%
of shares outstanding
% of Portfolio
0.06%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 99.9927894503103.ToString("F0")%
Shared 0.ToString("F0")%
None 0.007210549689700549.ToString("F0")%
Common Shares in IDXX Over Time
Shares Held
Position Value (USD)
Position in Diagnostics & Research
Healthcare · as of Mar 31, 2026CHARLES SCHWAB INVESTMENT MANAGEMENT INC holds $4,755,724,319 across 32 Diagnostics & Research names. IDXX ranks #3 (7.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | TMO |
Thermo Fisher Scientific Inc.
|
2,934,842 | $1,442,562,888 | |
| 2 | DHR |
Danaher Corp /De/
|
4,734,898 | $897,736,660 | |
| 3 | IDXX |
Idexx Laboratories Inc /De
This page
|
610,217 | $342,874,830 | |
| 4 | IQV |
Iqvia Holdings Inc.
|
1,412,147 | $240,827,549 | |
| 5 | WAT |
Waters Corp /De/
|
772,524 | $230,057,646 | |
| 6 | A |
Agilent Technologies, Inc.
|
1,904,308 | $217,053,025 | |
| 7 | MTD |
Mettler Toledo International Inc/
|
161,665 | $203,891,898 | |
| 8 | LH |
Labcorp Holdings Inc.
|
646,135 | $172,395,279 |
All Filings in IDXX
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $342,874,830 | 610,217 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $399,194,644 | 590,062 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $367,955,917 | 575,930 | Shares | Sole | 2025-11-10 | |
| 2025-06-30 | $298,506,463 | 556,562 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $231,789,722 | 551,946 | Shares | Sole | 2025-09-15 | |
| 2024-12-31 | $219,822,740 | 531,692 | Shares | Sole | 2025-02-06 | |
| 2024-09-30 | $260,430,300 | 515,479 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $253,465,312 | 520,249 | Shares | Sole | 2024-08-12 | |
| 2024-03-31 | $270,821,328 | 501,586 | Shares | Sole | 2024-05-09 | |
| 2023-12-31 | $264,647,284 | 476,799 | Shares | Sole | 2024-02-06 | |
| 2023-09-30 | $202,252,679 | 462,535 | Shares | Sole | 2023-11-08 | |
| 2023-06-30 | $229,765,704 | 457,491 | Shares | Sole | 2023-08-10 | |
| 2023-03-31 | $227,527,398 | 454,982 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $182,101,513 | 446,371 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $141,223,548 | 433,467 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $156,949,570 | 447,494 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $242,588,833 | 443,441 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 | $296,301,073 | 449,991 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 | $274,583,153 | 441,523 | Shares | Sole | 2021-11-16 | |
| 2021-06-30 | $282,792,932 | 447,776 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $208,087,885 | 425,268 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $225,335,897 | 450,789 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $168,787,675 | 429,365 | Shares | Sole | 2020-11-13 | |
| 2020-06-30 | $129,490,072 | 392,204 | Shares | Sole | 2020-08-20 | |
| 2020-03-31 | $101,812,260 | 420,295 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||