Position in WAT
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$67,566,650
-$153,138,507 QoQ
Shares Held
226,886
-61.0% QoQ
Ownership
0.231%
of shares outstanding
% of Portfolio
0.10%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
20 quarters on record
Voting authority
Sole 0.ToString("F0")%
Shared 100.ToString("F0")%
None 0.ToString("F0")%
Common Shares in WAT 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. WAT ranks #2 (12.7% 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/
This page
|
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
|
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 WAT
Export CSV
20 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $67,566,650 | 226,886 | Shares | Other | 2026-05-15 | |
| 2025-12-31 | $220,705,157 | 581,063 | Shares | Other | 2026-02-13 | |
| 2025-09-30 | $10,179,748 | 33,954 | Shares | Other | 2025-11-13 | |
| 2025-06-30 | $100,527,358 | 288,011 | Shares | Other | 2025-08-13 | |
| 2025-03-31 | $129,094,959 | 350,259 | Shares | Other | 2025-05-15 | |
| 2024-12-31 | $112,435,133 | 303,076 | Shares | Other | 2025-02-13 | |
| 2024-09-30 | $20,275,482 | 56,338 | Shares | Other | 2024-11-14 | |
| 2024-06-30 | $9,295,153 | 32,039 | Shares | Other | 2024-08-14 | |
| 2023-03-31 | $7,253,392 | 23,426 | Shares | Other | 2023-05-15 | |
| 2022-12-31 | $13,503,132 | 39,416 | Shares | Other | 2023-02-14 | |
| 2022-09-30 | $13,435,529 | 49,848 | Shares | Other | 2022-11-14 | |
| 2022-06-30 | $3,433,917 | 10,375 | Shares | Other | 2022-08-15 | |
| 2022-03-31 | $1,416,309 | 4,563 | Shares | Other | 2022-05-16 | |
| 2021-12-31 | $2,642,105 | 7,091 | Shares | Other | 2022-02-14 | |
| 2021-09-30 | $1,030,095 | 2,883 | Shares | Sole | 2021-11-15 | |
| 2021-03-31 | $614,375 | 2,162 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $10,658,606 | 43,079 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $31,479,237 | 160,871 | Shares | Sole | 2020-11-16 | |
| 2020-06-30 | $1,380,420 | 7,652 | Shares | Sole | 2020-08-13 | |
| 2020-03-31 | $33,133 | 182 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||