Position in IDXX
as of Jun 30, 2026
· filed Aug 13, 2026
Position Value
$49,026,303
+$21,327,936 QoQ
Shares Held
93,128
+88.9% QoQ
Ownership
0.118%
of shares outstanding
% of Portfolio
0.06%
of 13F equity value
Holder Rank
#113
of 1,286 holders
Holding Since
Mar 2020
20 quarters on record
Voting authority
Sole 0%
Shared 100%
None 0%
Common Shares in IDXX Over Time
Shares Held
Position Value (USD)
Position in Diagnostics & Research
Healthcare · as of Jun 30, 2026MARSHALL WACE, LLP holds $872,920,182 across 27 Diagnostics & Research names. IDXX ranks #6 (5.6% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | WAT |
Waters Corp /De/
|
581,332 | $218,022,752 | |
| 2 | QGEN |
Qiagen N.V.
|
3,491,480 | $136,516,866 | |
| 3 | MTD |
Mettler Toledo International Inc/
|
76,977 | $98,338,886 | |
| 4 | CRL |
Charles River Laboratories International, Inc.
|
342,995 | $77,787,835 | |
| 5 | DGX |
Quest Diagnostics Inc
|
269,760 | $57,175,631 | |
| 6 | IDXX |
Idexx Laboratories Inc /De
This page
|
93,128 | $49,026,303 | |
| 7 | TWST |
Twist Bioscience Corp
|
396,912 | $40,834,306 | |
| 8 | NTRA |
Natera, Inc.
|
131,663 | $35,739,920 |
All Filings in IDXX
Export CSV
20 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $49,026,303 | 93,128 | Shares | Other | 2026-08-13 | |
| 2026-03-31 | $27,698,367 | 49,295 | Shares | Other | 2026-05-15 | |
| 2025-12-31 | $830,102 | 1,227 | Shares | Other | 2026-02-13 | |
| 2025-09-30 | $319,445 | 500 | Shares | Other | 2025-11-13 | |
| 2025-06-30 | $10,726,800 | 20,000 | Shares | Other | 2025-08-13 | |
| 2025-03-31 | $46,425,052 | 110,549 | Shares | Other | 2025-05-15 | |
| 2024-12-31 | $85,629,211 | 207,114 | Shares | Other | 2025-02-13 | |
| 2024-09-30 | $14,284,085 | 28,273 | Shares | Other | 2024-11-14 | |
| 2024-06-30 | $9,987,600 | 20,500 | Shares | Other | 2024-08-14 | |
| 2024-03-31 | $10,798,600 | 20,000 | Shares | Other | 2024-05-15 | |
| 2023-12-31 | $26,801,699 | 48,287 | Shares | Other | 2024-02-14 | |
| 2023-09-30 | $8,745,400 | 20,000 | Shares | Other | 2023-11-14 | |
| 2023-06-30 | $26,107,422 | 51,983 | Shares | Other | 2023-08-14 | |
| 2023-03-31 | $149,597,931 | 299,148 | Shares | Other | 2023-05-15 | |
| 2022-09-30 | $10,279,967 | 31,553 | Shares | Other | 2022-11-14 | |
| 2021-12-31 | $1,937,189 | 2,942 | Shares | Other | 2022-02-14 | |
| 2021-09-30 | $7,418,645 | 11,929 | Shares | Sole | 2021-11-15 | |
| 2021-06-30 | $21,585,115 | 34,178 | Shares | Sole | 2021-08-13 | |
| 2021-03-31 | $10,369,946 | 21,193 | Shares | Sole | 2021-05-17 | |
| 2020-03-31 | $65,647 | 271 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||