ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
Position in IDXX — Idexx Laboratories Inc /De
CIK 1164508
BOSTON, MA
Position in IDXX
as of Jun 30, 2026
· filed Aug 13, 2026
Position Value
$561,752,542
+$90,417,297 QoQ
Shares Held
1,067,078
+27.2% QoQ
Ownership
1.35%
of shares outstanding
% of Portfolio
0.25%
of 13F equity value
Holder Rank
#10
of 1,286 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 84%
Shared 0%
None 16%
Common Shares in IDXX Over Time
Shares Held
Position Value (USD)
Position in Diagnostics & Research
Healthcare · as of Jun 30, 2026ARROWSTREET CAPITAL, LIMITED PARTNERSHIP holds $3,756,493,842 across 20 Diagnostics & Research names. IDXX ranks #2 (15.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | DHR |
Danaher Corp /De/
|
5,163,059 | $983,459,478 | |
| 2 | IDXX |
Idexx Laboratories Inc /De
This page
|
1,067,078 | $561,752,542 | |
| 3 | TMO |
Thermo Fisher Scientific Inc.
|
1,007,394 | $505,067,055 | |
| 4 | NTRA |
Natera, Inc.
|
1,503,706 | $408,180,993 | |
| 5 | A |
Agilent Technologies, Inc.
|
1,844,954 | $245,065,239 | |
| 6 | IQV |
Iqvia Holdings Inc.
|
1,250,053 | $241,535,240 | |
| 7 | MEDP |
Medpace Holdings, Inc.
|
429,012 | $227,200,465 | |
| 8 | MTD |
Mettler Toledo International Inc/
|
167,741 | $214,290,804 |
All Filings in IDXX
Export CSV
26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $561,752,542 | 1,067,078 | Shares | Defined | 2026-08-13 | |
| 2026-03-31 | $471,335,245 | 838,839 | Shares | Defined | 2026-05-14 | |
| 2025-12-31 | $372,340,463 | 550,368 | Shares | Defined | 2026-02-13 | |
| 2025-09-30 | $118,254,705 | 185,094 | Shares | Defined | 2025-11-13 | |
| 2025-06-30 | $110,559,518 | 206,137 | Shares | Defined | 2025-08-13 | |
| 2025-03-31 | $80,172,654 | 190,910 | Shares | Defined | 2025-05-14 | |
| 2024-12-31 | $58,787,860 | 142,192 | Shares | Defined | 2025-02-12 | |
| 2024-09-30 | $67,484,761 | 133,575 | Shares | Defined | 2024-11-14 | |
| 2024-06-30 | $61,873,425 | 126,998 | Shares | Defined | 2024-08-14 | |
| 2024-03-31 | $93,179,499 | 172,577 | Shares | Defined | 2024-05-15 | |
| 2023-12-31 | $97,229,773 | 175,173 | Shares | Defined | 2024-02-14 | |
| 2023-09-30 | $76,304,489 | 174,502 | Shares | Defined | 2023-11-14 | |
| 2023-06-30 | $117,967,800 | 234,888 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $126,034,162 | 252,028 | Shares | Defined | 2023-05-15 | |
| 2022-12-31 | $109,613,956 | 268,688 | Shares | Defined | 2023-02-14 | |
| 2022-09-30 | $85,721,889 | 263,112 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $137,764,990 | 392,795 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $229,264,640 | 419,085 | Shares | Defined | 2022-05-13 | |
| 2021-12-31 | $335,478,126 | 509,489 | Shares | Defined | 2022-02-14 | |
| 2021-09-30 | $294,814,182 | 474,054 | Shares | Defined | 2021-11-12 | |
| 2021-06-30 | $175,366,909 | 277,677 | Shares | Defined | 2021-08-13 | |
| 2021-03-31 | $57,129,389 | 116,755 | Shares | Defined | 2021-05-14 | |
| 2020-12-31 | $1,899,506 | 3,800 | Shares | Defined | 2021-02-12 | |
| 2020-09-30 | $432,421 | 1,100 | Shares | Defined | 2020-11-12 | |
| 2020-06-30 | $16,317,167 | 49,422 | Shares | Defined | 2020-08-12 | |
| 2020-03-31 | $29,670,766 | 122,485 | Shares | Defined | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||