Position in DGX
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$39,250,481
+$23,074,535 QoQ
Shares Held
200,278
+114.9% QoQ
Ownership
0.181%
of shares outstanding
% of Portfolio
0.06%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
22 quarters on record
Voting authority
Sole 0.ToString("F0")%
Shared 100.ToString("F0")%
None 0.ToString("F0")%
Common Shares in DGX 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. DGX ranks #4 (7.4% 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
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|
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 DGX
Export CSV
22 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $39,250,481 | 200,278 | Shares | Other | 2026-05-15 | |
| 2025-12-31 | $16,175,946 | 93,217 | Shares | Other | 2026-02-13 | |
| 2025-09-30 | $106,182,599 | 557,155 | Shares | Other | 2025-11-13 | |
| 2025-06-30 | $36,839,058 | 205,083 | Shares | Other | 2025-08-13 | |
| 2025-03-31 | $81,772,159 | 483,287 | Shares | Other | 2025-05-15 | |
| 2024-12-31 | $120,096,779 | 796,081 | Shares | Other | 2025-02-13 | |
| 2024-09-30 | $155,353,241 | 1,000,665 | Shares | Other | 2024-11-14 | |
| 2024-06-30 | $25,873,741 | 189,025 | Shares | Other | 2024-08-14 | |
| 2024-03-31 | $78,028,948 | 586,199 | Shares | Other | 2024-05-15 | |
| 2023-12-31 | $23,210,305 | 168,337 | Shares | Other | 2024-02-14 | |
| 2023-09-30 | $242,379 | 1,989 | Shares | Other | 2023-11-14 | |
| 2023-03-31 | $2,805,123 | 19,827 | Shares | Other | 2023-05-15 | |
| 2022-12-31 | $17,243,129 | 110,222 | Shares | Other | 2023-02-14 | |
| 2022-09-30 | $2,930,450 | 23,885 | Shares | Other | 2022-11-14 | |
| 2022-06-30 | $2,234,064 | 16,800 | Shares | Other | 2022-08-15 | |
| 2022-03-31 | $6,540,675 | 47,791 | Shares | Other | 2022-05-16 | |
| 2021-12-31 | $6,643,930 | 38,402 | Shares | Other | 2022-02-14 | |
| 2021-09-30 | $14,007,012 | 96,394 | Shares | Sole | 2021-11-15 | |
| 2021-03-31 | $4,330,704 | 33,744 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $7,305,359 | 61,302 | Shares | Sole | 2021-02-16 | |
| 2020-06-30 | $18,292,517 | 160,517 | Shares | Sole | 2020-08-13 | |
| 2020-03-31 | $52,773,561 | 657,205 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||