Position in IDXX
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$27,698,367
+$26,868,265 QoQ
Shares Held
49,295
+3917.5% QoQ
Ownership
0.062%
of shares outstanding
% of Portfolio
0.04%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
18 quarters on record
Voting authority
Sole 0.ToString("F0")%
Shared 100.ToString("F0")%
None 0.ToString("F0")%
Common Shares in IDXX Over Time
Shares Held
Position Value (USD)
Position in Diagnostics & Research
Healthcare · as of Mar 31, 2026MARSHALL WACE, LLP holds $531,017,373 across 25 Diagnostics & Research names. IDXX ranks #6 (5.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | TMO |
Thermo Fisher Scientific Inc.
|
477,250 | $234,582,691 | |
| 2 | WAT |
Waters Corp /De/
|
226,886 | $67,566,650 | |
| 3 | ILMN |
Illumina, Inc.
|
504,363 | $62,167,783 | |
| 4 | DGX |
Quest Diagnostics Inc
|
200,278 | $39,250,481 | |
| 5 | QGEN |
Qiagen N.V.
|
789,998 | $31,631,519 | |
| 6 | IDXX |
Idexx Laboratories Inc /De
This page
|
49,295 | $27,698,367 | |
| 7 | CRL |
Charles River Laboratories International, Inc.
|
149,651 | $25,814,797 | |
| 8 | NTRA |
Natera, Inc.
|
53,702 | $10,739,862 |
All Filings in IDXX
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18 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 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 | |
| 2021-03-31 | $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. | ||||||