Position in TMO
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$234,582,691
-$318,112,943 QoQ
Shares Held
477,250
-50.0% QoQ
Ownership
0.128%
of shares outstanding
% of Portfolio
0.34%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
21 quarters on record
Voting authority
Sole 0.ToString("F0")%
Shared 100.ToString("F0")%
None 0.ToString("F0")%
Common Shares in TMO Over Time
Shares Held
Position Value (USD)
Derivatives in TMO
reported options exposure · as of Mar 31, 2026CallValue
$540,683
CallShares
1,100
PutValue
$344,071
PutShares
700
Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.
Position in Diagnostics & Research
Healthcare · as of Mar 31, 2026MARSHALL WACE, LLP holds $531,017,373 across 25 Diagnostics & Research names. TMO ranks #1 (44.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | TMO |
Thermo Fisher Scientific Inc.
This page
|
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
|
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 TMO
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29 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $540,683 | 1,100 | Call | Other | 2026-05-15 | |
| 2026-03-31 | $344,071 | 700 | Put | Other | 2026-05-15 | |
| 2026-03-31 | $234,582,691 | 477,250 | Shares | Other | 2026-05-15 | |
| 2025-12-31 | $552,695,634 | 953,828 | Shares | Other | 2026-02-13 | |
| 2025-09-30 | $245,159,664 | 505,463 | Shares | Other | 2025-11-13 | |
| 2025-09-30 | $824,534 | 1,700 | Call | Other | 2025-11-13 | |
| 2025-06-30 | $30,409,500 | 75,000 | Put | Other | 2025-08-13 | |
| 2025-06-30 | $150,681,099 | 371,630 | Shares | Other | 2025-08-13 | |
| 2024-12-31 | $171,842,892 | 330,321 | Shares | Other | 2025-02-13 | |
| 2024-09-30 | $388,296,801 | 627,733 | Shares | Other | 2024-11-14 | |
| 2024-06-30 | $22,120,000 | 40,000 | Put | Other | 2024-08-14 | |
| 2024-06-30 | $387,100 | 700 | Shares | Other | 2024-08-14 | |
| 2024-03-31 | $1,441,982 | 2,481 | Shares | Other | 2024-05-15 | |
| 2023-12-31 | $224,299,114 | 422,576 | Shares | Other | 2024-02-14 | |
| 2023-03-31 | $17,567,181 | 30,479 | Shares | Other | 2023-05-15 | |
| 2022-12-31 | $220,592,094 | 400,574 | Shares | Other | 2023-02-14 | |
| 2022-09-30 | $234,735,645 | 462,816 | Shares | Other | 2022-11-14 | |
| 2022-06-30 | $390,354,285 | 718,514 | Shares | Other | 2022-08-15 | |
| 2022-03-31 | $189,178,106 | 320,288 | Shares | Other | 2022-05-16 | |
| 2021-12-31 | $696,494,469 | 1,043,844 | Shares | Other | 2022-02-14 | |
| 2021-09-30 | $6,913,093 | 12,100 | Put | Sole | 2021-11-15 | |
| 2021-09-30 | $230,676,201 | 403,753 | Shares | Sole | 2021-11-15 | |
| 2021-09-30 | $18,225,427 | 31,900 | Call | Sole | 2021-11-15 | |
| 2021-03-31 | $91,276 | 200 | Put | Sole | 2021-05-17 | |
| 2021-03-31 | $200,859,683 | 440,115 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $404,014,777 | 867,394 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $229,334,318 | 519,420 | Shares | Sole | 2020-11-16 | |
| 2020-06-30 | $208,953,506 | 576,678 | Shares | Sole | 2020-08-13 | |
| 2020-03-31 | $171,211,305 | 603,707 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||