ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
Position in TMO — Thermo Fisher Scientific Inc.
CIK 1164508
BOSTON, MA
Position in TMO
as of Jun 30, 2026
· filed Aug 13, 2026
Position Value
$505,067,055
+$193,255,661 QoQ
Shares Held
1,007,394
+58.8% QoQ
Ownership
0.272%
of shares outstanding
% of Portfolio
0.23%
of 13F equity value
Holder Rank
#58
of 2,606 holders
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 87%
Shared 0%
None 13%
Common Shares in TMO Over Time
Shares Held
Position Value (USD)
Position in Diagnostics & Research
Healthcare · as of Jun 30, 2026ARROWSTREET CAPITAL, LIMITED PARTNERSHIP holds $3,756,493,842 across 20 Diagnostics & Research names. TMO ranks #3 (13.4% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | DHR |
Danaher Corp /De/
|
5,163,059 | $983,459,478 | |
| 2 | IDXX |
Idexx Laboratories Inc /De
|
1,067,078 | $561,752,542 | |
| 3 | TMO |
Thermo Fisher Scientific Inc.
This page
|
1,007,394 | $505,067,055 | |
| 4 | NTRA |
Natera, Inc.
|
1,503,706 | $408,180,993 | |
| 5 | A |
Agilent Technologies, Inc.
|
1,844,954 | $245,065,239 | |
| 6 | IQV |
Iqvia Holdings Inc.
|
1,250,053 | $241,535,240 | |
| 7 | MEDP |
Medpace Holdings, Inc.
|
429,012 | $227,200,465 | |
| 8 | MTD |
Mettler Toledo International Inc/
|
167,741 | $214,290,804 |
All Filings in TMO
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $505,067,055 | 1,007,394 | Shares | Defined | 2026-08-13 | |
| 2026-03-31 | $311,811,394 | 634,369 | Shares | Defined | 2026-05-14 | |
| 2025-12-31 | $502,679,828 | 867,512 | Shares | Defined | 2026-02-13 | |
| 2025-09-30 | $614,095,947 | 1,266,125 | Shares | Defined | 2025-11-13 | |
| 2025-06-30 | $490,993,408 | 1,210,954 | Shares | Defined | 2025-08-13 | |
| 2025-03-31 | $326,393,753 | 655,936 | Shares | Defined | 2025-05-14 | |
| 2024-12-31 | $192,113,135 | 369,285 | Shares | Defined | 2025-02-12 | |
| 2024-09-30 | $127,625,218 | 206,323 | Shares | Defined | 2024-11-14 | |
| 2024-06-30 | $16,561,797 | 29,949 | Shares | Defined | 2024-08-14 | |
| 2024-03-31 | $2,099,911 | 3,613 | Shares | Defined | 2024-05-15 | |
| 2023-12-31 | $3,534,530 | 6,659 | Shares | Defined | 2024-02-14 | |
| 2023-09-30 | $143,529,059 | 283,559 | Shares | Defined | 2023-11-14 | |
| 2023-06-30 | $319,845,272 | 613,024 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $392,899,325 | 681,679 | Shares | Defined | 2023-05-15 | |
| 2022-12-31 | $361,970,189 | 657,303 | Shares | Defined | 2023-02-14 | |
| 2022-09-30 | $265,254,790 | 522,989 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $262,830,171 | 483,784 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $246,638,901 | 417,572 | Shares | Defined | 2022-05-13 | |
| 2021-12-31 | $91,901,634 | 137,734 | Shares | Defined | 2022-02-14 | |
| 2021-09-30 | $4,156,425 | 7,275 | Shares | Defined | 2021-11-12 | |
| 2021-06-30 | $30,273,749 | 60,011 | Shares | Defined | 2021-08-13 | |
| 2021-03-31 | $15,743,284 | 34,496 | Shares | Defined | 2021-05-14 | |
| 2020-12-31 | $64,024,721 | 137,457 | Shares | Defined | 2021-02-12 | |
| 2020-09-30 | $4,801,530 | 10,875 | Shares | Defined | 2020-11-12 | |
| 2020-03-31 | $22,761,736 | 80,260 | Shares | Defined | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||